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[mono-api-info] Use XmlWriter instead of XmlDocument to make this faster.
[mono-project.git] / mono / profiler / proflog.c
blob9120ae06916850b4154f96828b7bb34757b40a41
1 /*
2 * proflog.c: mono log profiler
3 *
4 * Authors:
5 * Paolo Molaro (lupus@ximian.com)
6 * Alex Rønne Petersen (alexrp@xamarin.com)
7 *
8 * Copyright 2010 Novell, Inc (http://www.novell.com)
9 * Copyright 2011 Xamarin Inc (http://www.xamarin.com)
10 */
11
12 #include <config.h>
13 #include "../mini/jit.h"
14 #include <mono/metadata/profiler.h>
15 #include <mono/metadata/threads.h>
16 #include <mono/metadata/mono-gc.h>
17 #include <mono/metadata/debug-helpers.h>
18 #include <mono/metadata/mono-perfcounters.h>
19 #include <mono/metadata/appdomain.h>
20 #include <mono/metadata/assembly.h>
21 #include <mono/metadata/tokentype.h>
22 #include <mono/metadata/tabledefs.h>
23 #include <mono/utils/atomic.h>
24 #include <mono/utils/mono-membar.h>
25 #include <mono/utils/mono-counters.h>
26 #include <mono/utils/mono-os-mutex.h>
27 #include <mono/utils/mono-conc-hashtable.h>
28 #include <mono/utils/lock-free-queue.h>
29 #include <stdlib.h>
30 #include <string.h>
31 #include <assert.h>
32 #include <glib.h>
33 #ifdef HAVE_UNISTD_H
34 #include <unistd.h>
35 #endif
36 #include <fcntl.h>
37 #include <errno.h>
38 #if defined(HOST_WIN32) || defined(DISABLE_SOCKETS)
39 #define DISABLE_HELPER_THREAD 1
40 #endif
41
42 #ifndef _GNU_SOURCE
43 #define _GNU_SOURCE
44 #endif
45 #ifdef HAVE_DLFCN_H
46 #include <dlfcn.h>
47 #endif
48 #ifdef HAVE_EXECINFO_H
49 #include <execinfo.h>
50 #endif
51 #ifdef HAVE_LINK_H
52 #include <link.h>
53 #endif
54
55 #ifndef DISABLE_HELPER_THREAD
56 #include <sys/types.h>
57 #include <sys/socket.h>
58 #include <netinet/in.h>
59 #include <sys/select.h>
60 #endif
61
62 #ifdef HOST_WIN32
63 #include <windows.h>
64 #else
65 #include <pthread.h>
66 #endif
67
68 #ifdef HAVE_SYS_STAT_H
69 #include <sys/stat.h>
70 #endif
71
72 #include "utils.c"
73 #include "proflog.h"
74
75 #if defined (HAVE_SYS_ZLIB)
76 #include <zlib.h>
77 #endif
78
79 #if defined(__linux__)
80
81 #include <unistd.h>
82 #include <sys/syscall.h>
83 #include "perf_event.h"
84
85 #ifdef ENABLE_PERF_EVENTS
86 #define USE_PERF_EVENTS 1
87
88 static int read_perf_mmap (MonoProfiler* prof, int cpu);
89 #endif
90
91 #endif
92
93 #define BUFFER_SIZE (4096 * 16)
94
95 /* Worst-case size in bytes of a 64-bit value encoded with LEB128. */
96 #define LEB128_SIZE 10
97 /* Size in bytes of the event ID prefix. */
98 #define EVENT_SIZE 1
99
100 static int nocalls = 0;
101 static int notraces = 0;
102 static int use_zip = 0;
103 static int do_report = 0;
104 static int do_heap_shot = 0;
105 static int max_call_depth = 100;
106 static volatile int runtime_inited = 0;
107 static int need_helper_thread = 0;
108 static int command_port = 0;
109 static int heapshot_requested = 0;
110 static int sample_type = 0;
111 static int sample_freq = 0;
112 static int do_mono_sample = 0;
113 static int in_shutdown = 0;
114 static int do_debug = 0;
115 static int do_counters = 0;
116 static int do_coverage = 0;
117 static gboolean debug_coverage = FALSE;
118 static MonoProfileSamplingMode sampling_mode = MONO_PROFILER_STAT_MODE_PROCESS;
119
120 typedef struct _LogBuffer LogBuffer;
121
122 /*
123 * file format:
124 * [header] [buffer]*
125 *
126 * The file is composed by a header followed by 0 or more buffers.
127 * Each buffer contains events that happened on a thread: for a given thread
128 * buffers that appear later in the file are guaranteed to contain events
129 * that happened later in time. Buffers from separate threads could be interleaved,
130 * though.
131 * Buffers are not required to be aligned.
132 *
133 * header format:
134 * [id: 4 bytes] constant value: LOG_HEADER_ID
135 * [major: 1 byte] [minor: 1 byte] major and minor version of the log profiler
136 * [format: 1 byte] version of the data format for the rest of the file
137 * [ptrsize: 1 byte] size in bytes of a pointer in the profiled program
138 * [startup time: 8 bytes] time in milliseconds since the unix epoch when the program started
139 * [timer overhead: 4 bytes] approximate overhead in nanoseconds of the timer
140 * [flags: 4 bytes] file format flags, should be 0 for now
141 * [pid: 4 bytes] pid of the profiled process
142 * [port: 2 bytes] tcp port for server if != 0
143 * [sysid: 2 bytes] operating system and architecture identifier
144 *
145 * The multiple byte integers are in little-endian format.
146 *
147 * buffer format:
148 * [buffer header] [event]*
149 * Buffers have a fixed-size header followed by 0 or more bytes of event data.
150 * Timing information and other values in the event data are usually stored
151 * as uleb128 or sleb128 integers. To save space, as noted for each item below,
152 * some data is represented as a difference between the actual value and
153 * either the last value of the same type (like for timing information) or
154 * as the difference from a value stored in a buffer header.
155 *
156 * For timing information the data is stored as uleb128, since timing
157 * increases in a monotonic way in each thread: the value is the number of
158 * nanoseconds to add to the last seen timing data in a buffer. The first value
159 * in a buffer will be calculated from the time_base field in the buffer head.
160 *
161 * Object or heap sizes are stored as uleb128.
162 * Pointer differences are stored as sleb128, instead.
163 *
164 * If an unexpected value is found, the rest of the buffer should be ignored,
165 * as generally the later values need the former to be interpreted correctly.
166 *
167 * buffer header format:
168 * [bufid: 4 bytes] constant value: BUF_ID
169 * [len: 4 bytes] size of the data following the buffer header
170 * [time_base: 8 bytes] time base in nanoseconds since an unspecified epoch
171 * [ptr_base: 8 bytes] base value for pointers
172 * [obj_base: 8 bytes] base value for object addresses
173 * [thread id: 8 bytes] system-specific thread ID (pthread_t for example)
174 * [method_base: 8 bytes] base value for MonoMethod pointers
175 *
176 * event format:
177 * [extended info: upper 4 bits] [type: lower 4 bits] [data]*
178 * The data that follows depends on type and the extended info.
179 * Type is one of the enum values in proflog.h: TYPE_ALLOC, TYPE_GC,
180 * TYPE_METADATA, TYPE_METHOD, TYPE_EXCEPTION, TYPE_MONITOR, TYPE_HEAP.
181 * The extended info bits are interpreted based on type, see
182 * each individual event description below.
183 * strings are represented as a 0-terminated utf8 sequence.
184 *
185 * backtrace format:
186 * [flags: uleb128] must be 0
187 * [num: uleb128] number of frames following
188 * [frame: sleb128]* num MonoMethod pointers as differences from ptr_base
189 *
190 * type alloc format:
191 * type: TYPE_ALLOC
192 * exinfo: flags: TYPE_ALLOC_BT
193 * [time diff: uleb128] nanoseconds since last timing
194 * [ptr: sleb128] class as a byte difference from ptr_base
195 * [obj: sleb128] object address as a byte difference from obj_base
196 * [size: uleb128] size of the object in the heap
197 * If the TYPE_ALLOC_BT flag is set, a backtrace follows.
198 *
199 * type GC format:
200 * type: TYPE_GC
201 * exinfo: one of TYPE_GC_EVENT, TYPE_GC_RESIZE, TYPE_GC_MOVE, TYPE_GC_HANDLE_CREATED[_BT],
202 * TYPE_GC_HANDLE_DESTROYED[_BT]
203 * [time diff: uleb128] nanoseconds since last timing
204 * if exinfo == TYPE_GC_RESIZE
205 * [heap_size: uleb128] new heap size
206 * if exinfo == TYPE_GC_EVENT
207 * [event type: uleb128] GC event (MONO_GC_EVENT_* from profiler.h)
208 * [generation: uleb128] GC generation event refers to
209 * if exinfo == TYPE_GC_MOVE
210 * [num_objects: uleb128] number of object moves that follow
211 * [objaddr: sleb128]+ num_objects object pointer differences from obj_base
212 * num is always an even number: the even items are the old
213 * addresses, the odd numbers are the respective new object addresses
214 * if exinfo == TYPE_GC_HANDLE_CREATED[_BT]
215 * [handle_type: uleb128] GC handle type (System.Runtime.InteropServices.GCHandleType)
216 * upper bits reserved as flags
217 * [handle: uleb128] GC handle value
218 * [objaddr: sleb128] object pointer differences from obj_base
219 * If exinfo == TYPE_GC_HANDLE_CREATED_BT, a backtrace follows.
220 * if exinfo == TYPE_GC_HANDLE_DESTROYED[_BT]
221 * [handle_type: uleb128] GC handle type (System.Runtime.InteropServices.GCHandleType)
222 * upper bits reserved as flags
223 * [handle: uleb128] GC handle value
224 * If exinfo == TYPE_GC_HANDLE_DESTROYED_BT, a backtrace follows.
225 *
226 * type metadata format:
227 * type: TYPE_METADATA
228 * exinfo: one of: TYPE_END_LOAD, TYPE_END_UNLOAD (optional for TYPE_THREAD and TYPE_DOMAIN)
229 * [time diff: uleb128] nanoseconds since last timing
230 * [mtype: byte] metadata type, one of: TYPE_CLASS, TYPE_IMAGE, TYPE_ASSEMBLY, TYPE_DOMAIN,
231 * TYPE_THREAD, TYPE_CONTEXT
232 * [pointer: sleb128] pointer of the metadata type depending on mtype
233 * if mtype == TYPE_CLASS
234 * [image: sleb128] MonoImage* as a pointer difference from ptr_base
235 * [flags: uleb128] must be 0
236 * [name: string] full class name
237 * if mtype == TYPE_IMAGE
238 * [flags: uleb128] must be 0
239 * [name: string] image file name
240 * if mtype == TYPE_ASSEMBLY
241 * [flags: uleb128] must be 0
242 * [name: string] assembly name
243 * if mtype == TYPE_DOMAIN
244 * [flags: uleb128] must be 0
245 * if mtype == TYPE_DOMAIN && exinfo == 0
246 * [name: string] domain friendly name
247 * if mtype == TYPE_CONTEXT
248 * [flags: uleb128] must be 0
249 * [domain: sleb128] domain id as pointer
250 * if mtype == TYPE_THREAD && (format_version < 11 || (format_version > 10 && exinfo == 0))
251 * [flags: uleb128] must be 0
252 * [name: string] thread name
253 *
254 * type method format:
255 * type: TYPE_METHOD
256 * exinfo: one of: TYPE_LEAVE, TYPE_ENTER, TYPE_EXC_LEAVE, TYPE_JIT
257 * [time diff: uleb128] nanoseconds since last timing
258 * [method: sleb128] MonoMethod* as a pointer difference from the last such
259 * pointer or the buffer method_base
260 * if exinfo == TYPE_JIT
261 * [code address: sleb128] pointer to the native code as a diff from ptr_base
262 * [code size: uleb128] size of the generated code
263 * [name: string] full method name
264 *
265 * type runtime format:
266 * type: TYPE_RUNTIME
267 * exinfo: one of: TYPE_JITHELPER
268 * [time diff: uleb128] nanoseconds since last timing
269 * if exinfo == TYPE_JITHELPER
270 * [type: uleb128] MonoProfilerCodeBufferType enum value
271 * [buffer address: sleb128] pointer to the native code as a diff from ptr_base
272 * [buffer size: uleb128] size of the generated code
273 * if type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE
274 * [name: string] buffer description name
275 *
276 * type monitor format:
277 * type: TYPE_MONITOR
278 * exinfo: TYPE_MONITOR_BT flag and one of: MONO_PROFILER_MONITOR_(CONTENTION|FAIL|DONE)
279 * [time diff: uleb128] nanoseconds since last timing
280 * [object: sleb128] the lock object as a difference from obj_base
281 * if exinfo.low3bits == MONO_PROFILER_MONITOR_CONTENTION
282 * If the TYPE_MONITOR_BT flag is set, a backtrace follows.
283 *
284 * type heap format
285 * type: TYPE_HEAP
286 * exinfo: one of TYPE_HEAP_START, TYPE_HEAP_END, TYPE_HEAP_OBJECT, TYPE_HEAP_ROOT
287 * if exinfo == TYPE_HEAP_START
288 * [time diff: uleb128] nanoseconds since last timing
289 * if exinfo == TYPE_HEAP_END
290 * [time diff: uleb128] nanoseconds since last timing
291 * if exinfo == TYPE_HEAP_OBJECT
292 * [object: sleb128] the object as a difference from obj_base
293 * [class: sleb128] the object MonoClass* as a difference from ptr_base
294 * [size: uleb128] size of the object on the heap
295 * [num_refs: uleb128] number of object references
296 * if (format version > 1) each referenced objref is preceded by a
297 * uleb128 encoded offset: the first offset is from the object address
298 * and each next offset is relative to the previous one
299 * [objrefs: sleb128]+ object referenced as a difference from obj_base
300 * The same object can appear multiple times, but only the first time
301 * with size != 0: in the other cases this data will only be used to
302 * provide additional referenced objects.
303 * if exinfo == TYPE_HEAP_ROOT
304 * [num_roots: uleb128] number of root references
305 * [num_gc: uleb128] number of major gcs
306 * [object: sleb128] the object as a difference from obj_base
307 * [root_type: uleb128] the root_type: MonoProfileGCRootType (profiler.h)
308 * [extra_info: uleb128] the extra_info value
309 * object, root_type and extra_info are repeated num_roots times
310 *
311 * type sample format
312 * type: TYPE_SAMPLE
313 * exinfo: one of TYPE_SAMPLE_HIT, TYPE_SAMPLE_USYM, TYPE_SAMPLE_UBIN, TYPE_SAMPLE_COUNTERS_DESC, TYPE_SAMPLE_COUNTERS
314 * if exinfo == TYPE_SAMPLE_HIT
315 * [sample_type: uleb128] type of sample (SAMPLE_*)
316 * [timestamp: uleb128] nanoseconds since startup (note: different from other timestamps!)
317 * if (format_version > 10)
318 * [thread: sleb128] thread id as difference from ptr_base
319 * [count: uleb128] number of following instruction addresses
320 * [ip: sleb128]* instruction pointer as difference from ptr_base
321 * if (format_version > 5)
322 * [mbt_count: uleb128] number of managed backtrace info triplets (method + IL offset + native offset)
323 * [method: sleb128]* MonoMethod* as a pointer difference from the last such
324 * pointer or the buffer method_base (the first such method can be also indentified by ip, but this is not neccessarily true)
325 * [il_offset: sleb128]* IL offset inside method where the hit occurred
326 * [native_offset: sleb128]* native offset inside method where the hit occurred
327 * if exinfo == TYPE_SAMPLE_USYM
328 * [address: sleb128] symbol address as a difference from ptr_base
329 * [size: uleb128] symbol size (may be 0 if unknown)
330 * [name: string] symbol name
331 * if exinfo == TYPE_SAMPLE_UBIN
332 * [time diff: uleb128] nanoseconds since last timing
333 * [address: sleb128] address where binary has been loaded
334 * [offset: uleb128] file offset of mapping (the same file can be mapped multiple times)
335 * [size: uleb128] memory size
336 * [name: string] binary name
337 * if exinfo == TYPE_SAMPLE_COUNTERS_DESC
338 * [len: uleb128] number of counters
339 * for i = 0 to len
340 * [section: uleb128] section of counter
341 * if section == MONO_COUNTER_PERFCOUNTERS:
342 * [section_name: string] section name of counter
343 * [name: string] name of counter
344 * [type: uleb128] type of counter
345 * [unit: uleb128] unit of counter
346 * [variance: uleb128] variance of counter
347 * [index: uleb128] unique index of counter
348 * if exinfo == TYPE_SAMPLE_COUNTERS
349 * [timestamp: uleb128] sampling timestamp
350 * while true:
351 * [index: uleb128] unique index of counter
352 * if index == 0:
353 * break
354 * [type: uleb128] type of counter value
355 * if type == string:
356 * if value == null:
357 * [0: uleb128] 0 -> value is null
358 * else:
359 * [1: uleb128] 1 -> value is not null
360 * [value: string] counter value
361 * else:
362 * [value: uleb128/sleb128/double] counter value, can be sleb128, uleb128 or double (determined by using type)
363 *
364 * type coverage format
365 * type: TYPE_COVERAGE
366 * exinfo: one of TYPE_COVERAGE_METHOD, TYPE_COVERAGE_STATEMENT, TYPE_COVERAGE_ASSEMBLY, TYPE_COVERAGE_CLASS
367 * if exinfo == TYPE_COVERAGE_METHOD
368 * [assembly: string] name of assembly
369 * [class: string] name of the class
370 * [name: string] name of the method
371 * [signature: string] the signature of the method
372 * [filename: string] the file path of the file that contains this method
373 * [token: uleb128] the method token
374 * [method_id: uleb128] an ID for this data to associate with the buffers of TYPE_COVERAGE_STATEMENTS
375 * [len: uleb128] the number of TYPE_COVERAGE_BUFFERS associated with this method
376 * if exinfo == TYPE_COVERAGE_STATEMENTS
377 * [method_id: uleb128] an the TYPE_COVERAGE_METHOD buffer to associate this with
378 * [offset: uleb128] the il offset relative to the previous offset
379 * [counter: uleb128] the counter for this instruction
380 * [line: uleb128] the line of filename containing this instruction
381 * [column: uleb128] the column containing this instruction
382 * if exinfo == TYPE_COVERAGE_ASSEMBLY
383 * [name: string] assembly name
384 * [guid: string] assembly GUID
385 * [filename: string] assembly filename
386 * [number_of_methods: uleb128] the number of methods in this assembly
387 * [fully_covered: uleb128] the number of fully covered methods
388 * [partially_covered: uleb128] the number of partially covered methods
389 * currently partially_covered will always be 0, and fully_covered is the
390 * number of methods that are fully and partially covered.
391 * if exinfo == TYPE_COVERAGE_CLASS
392 * [name: string] assembly name
393 * [class: string] class name
394 * [number_of_methods: uleb128] the number of methods in this class
395 * [fully_covered: uleb128] the number of fully covered methods
396 * [partially_covered: uleb128] the number of partially covered methods
397 * currently partially_covered will always be 0, and fully_covered is the
398 * number of methods that are fully and partially covered.
399 */
400
401 /*
402 * Format oddities that we ought to fix:
403 *
404 * - Methods written in emit_bt () should be based on the buffer's base
405 * method instead of the base pointer.
406 * - The TYPE_SAMPLE_HIT event contains (currently) pointless data like
407 * always-one unmanaged frame count and always-zero IL offsets.
408 *
409 * These are mostly small things and are not worth a format change by
410 * themselves. They should be done when some other major change has to
411 * be done to the format.
412 */
413
414 struct _LogBuffer {
415 LogBuffer *next;
416 uint64_t time_base;
417 uint64_t last_time;
418 uintptr_t ptr_base;
419 uintptr_t method_base;
420 uintptr_t last_method;
421 uintptr_t obj_base;
422 uintptr_t thread_id;
423 unsigned char* data_end;
424 unsigned char* data;
425 int locked;
426 int size;
427 int call_depth;
428 unsigned char buf [1];
429 };
430
431 static inline void
432 ign_res (int G_GNUC_UNUSED unused, ...)
433 {
434 }
435
436 #define ENTER_LOG(lb,str) if ((lb)->locked) {ign_res (write(2, str, strlen(str))); ign_res (write(2, "\n", 1));return;} else {(lb)->locked++;}
437 #define EXIT_LOG(lb) (lb)->locked--;
438
439 typedef struct _StatBuffer StatBuffer;
440 struct _StatBuffer {
441 StatBuffer *next;
442 uintptr_t size;
443 uintptr_t *data_end;
444 uintptr_t *data;
445 uintptr_t buf [1];
446 };
447
448 typedef struct _BinaryObject BinaryObject;
449
450 struct _BinaryObject {
451 BinaryObject *next;
452 void *addr;
453 char *name;
454 };
455
456 struct _MonoProfiler {
457 StatBuffer *stat_buffers;
458 FILE* file;
459 #if defined (HAVE_SYS_ZLIB)
460 gzFile gzfile;
461 #endif
462 uint64_t startup_time;
463 int pipe_output;
464 int last_gc_gen_started;
465 int command_port;
466 int server_socket;
467 int pipes [2];
468 #ifndef HOST_WIN32
469 pthread_t helper_thread;
470 pthread_t writer_thread;
471 #endif
472 volatile gint32 run_writer_thread;
473 MonoLockFreeQueue writer_queue;
474 MonoConcurrentHashTable *method_table;
475 mono_mutex_t method_table_mutex;
476 BinaryObject *binary_objects;
477 GPtrArray *coverage_filters;
478 GPtrArray *sorted_sample_events;
479 };
480
481 typedef struct _WriterQueueEntry WriterQueueEntry;
482 struct _WriterQueueEntry {
483 MonoLockFreeQueueNode node;
484 GPtrArray *methods;
485 LogBuffer *buffer;
486 };
487
488 typedef struct _MethodInfo MethodInfo;
489 struct _MethodInfo {
490 MonoMethod *method;
491 MonoJitInfo *ji;
492 uint64_t time;
493 };
494
495 #ifdef TLS_INIT
496 #undef TLS_INIT
497 #endif
498
499 #ifdef HOST_WIN32
500 #define TLS_SET(x,y) (TlsSetValue (x, y))
501 #define TLS_GET(t,x) ((t *) TlsGetValue (x))
502 #define TLS_INIT(x) (x = TlsAlloc ())
503 static int tlsbuffer;
504 static int tlsmethodlist;
505 #elif HAVE_KW_THREAD
506 #define TLS_SET(x,y) (x = y)
507 #define TLS_GET(t,x) (x)
508 #define TLS_INIT(x)
509 static __thread LogBuffer* tlsbuffer = NULL;
510 static __thread GPtrArray* tlsmethodlist = NULL;
511 #else
512 #define TLS_SET(x,y) (pthread_setspecific (x, y))
513 #define TLS_GET(t,x) ((t *) pthread_getspecific (x))
514 #define TLS_INIT(x) (pthread_key_create (&x, NULL))
515 static pthread_key_t tlsbuffer;
516 static pthread_key_t tlsmethodlist;
517 #endif
518
519 static void safe_send (MonoProfiler *profiler, LogBuffer *logbuffer);
520
521 static char*
522 pstrdup (const char *s)
523 {
524 int len = strlen (s) + 1;
525 char *p = (char *)malloc (len);
526 memcpy (p, s, len);
527 return p;
528 }
529
530 static StatBuffer*
531 create_stat_buffer (void)
532 {
533 StatBuffer* buf = (StatBuffer *)alloc_buffer (BUFFER_SIZE);
534 buf->size = BUFFER_SIZE;
535 buf->data_end = (uintptr_t*)((unsigned char*)buf + buf->size);
536 buf->data = buf->buf;
537 return buf;
538 }
539
540 static LogBuffer*
541 create_buffer (void)
542 {
543 LogBuffer* buf = (LogBuffer *)alloc_buffer (BUFFER_SIZE);
544 buf->size = BUFFER_SIZE;
545 buf->time_base = current_time ();
546 buf->last_time = buf->time_base;
547 buf->data_end = (unsigned char*)buf + buf->size;
548 buf->data = buf->buf;
549 return buf;
550 }
551
552 static void
553 init_thread (void)
554 {
555 if (!TLS_GET (LogBuffer, tlsbuffer)) {
556 LogBuffer *logbuffer = create_buffer ();
557 TLS_SET (tlsbuffer, logbuffer);
558 logbuffer->thread_id = thread_id ();
559 }
560 if (!TLS_GET (GPtrArray, tlsmethodlist)) {
561 GPtrArray *methodlist = g_ptr_array_new ();
562 TLS_SET (tlsmethodlist, methodlist);
563 }
564
565 //printf ("thread %p at time %llu\n", (void*)logbuffer->thread_id, logbuffer->time_base);
566 }
567
568 static LogBuffer *
569 ensure_logbuf_inner (LogBuffer *old, int bytes)
570 {
571 if (old && old->data + bytes + 100 < old->data_end)
572 return old;
573
574 LogBuffer *new_ = (LogBuffer *)create_buffer ();
575 new_->thread_id = thread_id ();
576 new_->next = old;
577
578 if (old)
579 new_->call_depth = old->call_depth;
580
581 return new_;
582 }
583
584 static LogBuffer*
585 ensure_logbuf (int bytes)
586 {
587 LogBuffer *old = TLS_GET (LogBuffer, tlsbuffer);
588 LogBuffer *new_ = ensure_logbuf_inner (old, bytes);
589
590 if (new_ == old)
591 return old; // Still enough space.
592
593 TLS_SET (tlsbuffer, new_);
594 init_thread ();
595
596 return new_;
597 }
598
599 static void
600 emit_byte (LogBuffer *logbuffer, int value)
601 {
602 logbuffer->data [0] = value;
603 logbuffer->data++;
604 assert (logbuffer->data <= logbuffer->data_end);
605 }
606
607 static void
608 emit_value (LogBuffer *logbuffer, int value)
609 {
610 encode_uleb128 (value, logbuffer->data, &logbuffer->data);
611 assert (logbuffer->data <= logbuffer->data_end);
612 }
613
614 static void
615 emit_time (LogBuffer *logbuffer, uint64_t value)
616 {
617 uint64_t tdiff = value - logbuffer->last_time;
618 //if (value < logbuffer->last_time)
619 // printf ("time went backwards\n");
620 //if (tdiff > 1000000)
621 // printf ("large time offset: %llu\n", tdiff);
622 encode_uleb128 (tdiff, logbuffer->data, &logbuffer->data);
623 /*if (tdiff != decode_uleb128 (p, &p))
624 printf ("incorrect encoding: %llu\n", tdiff);*/
625 logbuffer->last_time = value;
626 assert (logbuffer->data <= logbuffer->data_end);
627 }
628
629 static void
630 emit_svalue (LogBuffer *logbuffer, int64_t value)
631 {
632 encode_sleb128 (value, logbuffer->data, &logbuffer->data);
633 assert (logbuffer->data <= logbuffer->data_end);
634 }
635
636 static void
637 emit_uvalue (LogBuffer *logbuffer, uint64_t value)
638 {
639 encode_uleb128 (value, logbuffer->data, &logbuffer->data);
640 assert (logbuffer->data <= logbuffer->data_end);
641 }
642
643 static void
644 emit_ptr (LogBuffer *logbuffer, void *ptr)
645 {
646 if (!logbuffer->ptr_base)
647 logbuffer->ptr_base = (uintptr_t)ptr;
648 emit_svalue (logbuffer, (intptr_t)ptr - logbuffer->ptr_base);
649 assert (logbuffer->data <= logbuffer->data_end);
650 }
651
652 static void
653 emit_method_inner (LogBuffer *logbuffer, void *method)
654 {
655 if (!logbuffer->method_base) {
656 logbuffer->method_base = (intptr_t)method;
657 logbuffer->last_method = (intptr_t)method;
658 }
659 encode_sleb128 ((intptr_t)((char*)method - (char*)logbuffer->last_method), logbuffer->data, &logbuffer->data);
660 logbuffer->last_method = (intptr_t)method;
661 assert (logbuffer->data <= logbuffer->data_end);
662 }
663
664 /*
665 typedef struct {
666 MonoMethod *method;
667 MonoJitInfo *found;
668 } MethodSearch;
669
670 static void
671 find_method (MonoDomain *domain, void *user_data)
672 {
673 MethodSearch *search = user_data;
674
675 if (search->found)
676 return;
677
678 MonoJitInfo *ji = mono_get_jit_info_from_method (domain, search->method);
679
680 // It could be AOT'd, so we need to get it from the AOT runtime's cache.
681 if (!ji) {
682 void *ip = mono_aot_get_method (domain, search->method);
683
684 // Avoid a slow path in mono_jit_info_table_find ().
685 if (ip)
686 ji = mono_jit_info_table_find (domain, ip);
687 }
688
689 if (ji)
690 search->found = ji;
691 }
692 */
693
694 static void
695 register_method_local (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *ji)
696 {
697 if (!mono_conc_hashtable_lookup (prof->method_table, method)) {
698 /*
699 * FIXME: In some cases, we crash while looking up JIT info for AOT'd methods.
700 * This usually happens for static constructors. This code is disabled for now
701 * as we don't need this info for anything critical.
702 *
703 * https://bugzilla.xamarin.com/show_bug.cgi?id=35171
704 */
705 /*
706 if (!ji) {
707 MethodSearch search = { method, NULL };
708
709 mono_domain_foreach (find_method, &search);
710
711 ji = search.found;
712 }
713 */
714
715 /*
716 * FIXME: We can't always find JIT info for a generic shared method, especially
717 * if we obtained the MonoMethod during an async stack walk. For now, we deal
718 * with this by giving the generic shared method name and dummy code start/size
719 * information (i.e. zeroes).
720 */
721 //g_assert (ji);
722
723 MethodInfo *info = (MethodInfo *)malloc (sizeof (MethodInfo));
724
725 info->method = method;
726 info->ji = ji;
727 info->time = current_time ();
728
729 g_ptr_array_add (TLS_GET (GPtrArray, tlsmethodlist), info);
730 }
731 }
732
733 static void
734 emit_method (MonoProfiler *prof, LogBuffer *logbuffer, MonoMethod *method)
735 {
736 register_method_local (prof, method, NULL);
737 emit_method_inner (logbuffer, method);
738 }
739
740 static void
741 emit_method_as_ptr (MonoProfiler *prof, LogBuffer *logbuffer, MonoMethod *method)
742 {
743 register_method_local (prof, method, NULL);
744 emit_ptr (logbuffer, method);
745 }
746
747 static void
748 emit_obj (LogBuffer *logbuffer, void *ptr)
749 {
750 if (!logbuffer->obj_base)
751 logbuffer->obj_base = (uintptr_t)ptr >> 3;
752 emit_svalue (logbuffer, ((uintptr_t)ptr >> 3) - logbuffer->obj_base);
753 assert (logbuffer->data <= logbuffer->data_end);
754 }
755
756 static void
757 emit_string (LogBuffer *logbuffer, const char *str, size_t size)
758 {
759 size_t i = 0;
760 if (str) {
761 for (; i < size; i++) {
762 if (str[i] == '\0')
763 break;
764 emit_byte (logbuffer, str [i]);
765 }
766 }
767 emit_byte (logbuffer, '\0');
768 }
769
770 static void
771 emit_double (LogBuffer *logbuffer, double value)
772 {
773 int i;
774 unsigned char buffer[8];
775 memcpy (buffer, &value, 8);
776 #if G_BYTE_ORDER == G_BIG_ENDIAN
777 for (i = 7; i >= 0; i--)
778 #else
779 for (i = 0; i < 8; i++)
780 #endif
781 emit_byte (logbuffer, buffer[i]);
782 }
783
784 static char*
785 write_int16 (char *buf, int32_t value)
786 {
787 int i;
788 for (i = 0; i < 2; ++i) {
789 buf [i] = value;
790 value >>= 8;
791 }
792 return buf + 2;
793 }
794
795 static char*
796 write_int32 (char *buf, int32_t value)
797 {
798 int i;
799 for (i = 0; i < 4; ++i) {
800 buf [i] = value;
801 value >>= 8;
802 }
803 return buf + 4;
804 }
805
806 static char*
807 write_int64 (char *buf, int64_t value)
808 {
809 int i;
810 for (i = 0; i < 8; ++i) {
811 buf [i] = value;
812 value >>= 8;
813 }
814 return buf + 8;
815 }
816
817 static void
818 dump_header (MonoProfiler *profiler)
819 {
820 char hbuf [128];
821 char *p = hbuf;
822 p = write_int32 (p, LOG_HEADER_ID);
823 *p++ = LOG_VERSION_MAJOR;
824 *p++ = LOG_VERSION_MINOR;
825 *p++ = LOG_DATA_VERSION;
826 *p++ = sizeof (void*);
827 p = write_int64 (p, ((uint64_t)time (NULL)) * 1000); /* startup time */
828 p = write_int32 (p, get_timer_overhead ()); /* timer overhead */
829 p = write_int32 (p, 0); /* flags */
830 p = write_int32 (p, process_id ()); /* pid */
831 p = write_int16 (p, profiler->command_port); /* port */
832 p = write_int16 (p, 0); /* opsystem */
833 #if defined (HAVE_SYS_ZLIB)
834 if (profiler->gzfile) {
835 gzwrite (profiler->gzfile, hbuf, p - hbuf);
836 } else {
837 fwrite (hbuf, p - hbuf, 1, profiler->file);
838 }
839 #else
840 fwrite (hbuf, p - hbuf, 1, profiler->file);
841 fflush (profiler->file);
842 #endif
843 }
844
845 static void
846 send_buffer (MonoProfiler *prof, GPtrArray *methods, LogBuffer *buffer)
847 {
848 WriterQueueEntry *entry = (WriterQueueEntry *)calloc (1, sizeof (WriterQueueEntry));
849 mono_lock_free_queue_node_init (&entry->node, FALSE);
850 entry->methods = methods;
851 entry->buffer = buffer;
852 mono_lock_free_queue_enqueue (&prof->writer_queue, &entry->node);
853 }
854
855 static void
856 dump_buffer (MonoProfiler *profiler, LogBuffer *buf)
857 {
858 char hbuf [128];
859 char *p = hbuf;
860 if (buf->next)
861 dump_buffer (profiler, buf->next);
862 p = write_int32 (p, BUF_ID);
863 p = write_int32 (p, buf->data - buf->buf);
864 p = write_int64 (p, buf->time_base);
865 p = write_int64 (p, buf->ptr_base);
866 p = write_int64 (p, buf->obj_base);
867 p = write_int64 (p, buf->thread_id);
868 p = write_int64 (p, buf->method_base);
869 #if defined (HAVE_SYS_ZLIB)
870 if (profiler->gzfile) {
871 gzwrite (profiler->gzfile, hbuf, p - hbuf);
872 gzwrite (profiler->gzfile, buf->buf, buf->data - buf->buf);
873 } else {
874 #endif
875 fwrite (hbuf, p - hbuf, 1, profiler->file);
876 fwrite (buf->buf, buf->data - buf->buf, 1, profiler->file);
877 fflush (profiler->file);
878 #if defined (HAVE_SYS_ZLIB)
879 }
880 #endif
881 free_buffer (buf, buf->size);
882 }
883
884 static void
885 process_requests (MonoProfiler *profiler)
886 {
887 if (heapshot_requested)
888 mono_gc_collect (mono_gc_max_generation ());
889 }
890
891 static void counters_init (MonoProfiler *profiler);
892 static void counters_sample (MonoProfiler *profiler, uint64_t timestamp);
893
894 /*
895 * Can be called only at safe callback locations.
896 */
897 static void
898 safe_send (MonoProfiler *profiler, LogBuffer *logbuffer)
899 {
900 /* We need the runtime initialized so that we have threads and hazard
901 * pointers available. Otherwise, the lock free queue will not work and
902 * there won't be a thread to process the data.
903 *
904 * While the runtime isn't initialized, we just accumulate data in the
905 * thread local buffer list.
906 */
907 if (!InterlockedRead (&runtime_inited))
908 return;
909
910 int cd = logbuffer->call_depth;
911
912 send_buffer (profiler, TLS_GET (GPtrArray, tlsmethodlist), TLS_GET (LogBuffer, tlsbuffer));
913
914 TLS_SET (tlsbuffer, NULL);
915 TLS_SET (tlsmethodlist, NULL);
916
917 init_thread ();
918
919 TLS_GET (LogBuffer, tlsbuffer)->call_depth = cd;
920 }
921
922 static int
923 gc_reference (MonoObject *obj, MonoClass *klass, uintptr_t size, uintptr_t num, MonoObject **refs, uintptr_t *offsets, void *data)
924 {
925 int i;
926 uintptr_t last_offset = 0;
927 //const char *name = mono_class_get_name (klass);
928 LogBuffer *logbuffer = ensure_logbuf (
929 EVENT_SIZE /* event */ +
930 LEB128_SIZE /* obj */ +
931 LEB128_SIZE /* klass */ +
932 LEB128_SIZE /* size */ +
933 LEB128_SIZE /* num */ +
934 num * (
935 LEB128_SIZE /* offset */ +
936 LEB128_SIZE /* ref */
937 )
938 );
939 emit_byte (logbuffer, TYPE_HEAP_OBJECT | TYPE_HEAP);
940 emit_obj (logbuffer, obj);
941 emit_ptr (logbuffer, klass);
942 /* account for object alignment in the heap */
943 size += 7;
944 size &= ~7;
945 emit_value (logbuffer, size);
946 emit_value (logbuffer, num);
947 for (i = 0; i < num; ++i) {
948 emit_value (logbuffer, offsets [i] - last_offset);
949 last_offset = offsets [i];
950 emit_obj (logbuffer, refs [i]);
951 }
952 //if (num)
953 // printf ("obj: %p, klass: %s, refs: %d, size: %d\n", obj, name, (int)num, (int)size);
954 return 0;
955 }
956
957 static unsigned int hs_mode_ms = 0;
958 static unsigned int hs_mode_gc = 0;
959 static unsigned int hs_mode_ondemand = 0;
960 static unsigned int gc_count = 0;
961 static uint64_t last_hs_time = 0;
962
963 static void
964 heap_walk (MonoProfiler *profiler)
965 {
966 int do_walk = 0;
967 uint64_t now;
968 LogBuffer *logbuffer;
969 if (!do_heap_shot)
970 return;
971 logbuffer = ensure_logbuf (
972 EVENT_SIZE /* event */ +
973 LEB128_SIZE /* time */
974 );
975 now = current_time ();
976 if (hs_mode_ms && (now - last_hs_time)/1000000 >= hs_mode_ms)
977 do_walk = 1;
978 else if (hs_mode_gc && (gc_count % hs_mode_gc) == 0)
979 do_walk = 1;
980 else if (hs_mode_ondemand)
981 do_walk = heapshot_requested;
982 else if (!hs_mode_ms && !hs_mode_gc && profiler->last_gc_gen_started == mono_gc_max_generation ())
983 do_walk = 1;
984
985 if (!do_walk)
986 return;
987 heapshot_requested = 0;
988 emit_byte (logbuffer, TYPE_HEAP_START | TYPE_HEAP);
989 emit_time (logbuffer, now);
990 mono_gc_walk_heap (0, gc_reference, NULL);
991 logbuffer = ensure_logbuf (
992 EVENT_SIZE /* event */ +
993 LEB128_SIZE /* time */
994 );
995 now = current_time ();
996 emit_byte (logbuffer, TYPE_HEAP_END | TYPE_HEAP);
997 emit_time (logbuffer, now);
998 last_hs_time = now;
999 }
1000
1001 static void
1002 gc_event (MonoProfiler *profiler, MonoGCEvent ev, int generation) {
1003 uint64_t now;
1004 LogBuffer *logbuffer = ensure_logbuf (
1005 EVENT_SIZE /* event */ +
1006 LEB128_SIZE /* time */ +
1007 LEB128_SIZE /* gc event */ +
1008 LEB128_SIZE /* generation */
1009 );
1010 now = current_time ();
1011 ENTER_LOG (logbuffer, "gcevent");
1012 emit_byte (logbuffer, TYPE_GC_EVENT | TYPE_GC);
1013 emit_time (logbuffer, now);
1014 emit_value (logbuffer, ev);
1015 emit_value (logbuffer, generation);
1016 /* to deal with nested gen1 after gen0 started */
1017 if (ev == MONO_GC_EVENT_START) {
1018 profiler->last_gc_gen_started = generation;
1019 if (generation == mono_gc_max_generation ())
1020 gc_count++;
1021 }
1022 if (ev == MONO_GC_EVENT_PRE_START_WORLD)
1023 heap_walk (profiler);
1024 EXIT_LOG (logbuffer);
1025 if (ev == MONO_GC_EVENT_POST_START_WORLD)
1026 safe_send (profiler, logbuffer);
1027 //printf ("gc event %d for generation %d\n", ev, generation);
1028 }
1029
1030 static void
1031 gc_resize (MonoProfiler *profiler, int64_t new_size) {
1032 uint64_t now;
1033 LogBuffer *logbuffer = ensure_logbuf (
1034 EVENT_SIZE /* event */ +
1035 LEB128_SIZE /* time */ +
1036 LEB128_SIZE /* new size */
1037 );
1038 now = current_time ();
1039 ENTER_LOG (logbuffer, "gcresize");
1040 emit_byte (logbuffer, TYPE_GC_RESIZE | TYPE_GC);
1041 emit_time (logbuffer, now);
1042 emit_value (logbuffer, new_size);
1043 //printf ("gc resized to %lld\n", new_size);
1044 EXIT_LOG (logbuffer);
1045 }
1046
1047 #define MAX_FRAMES 32
1048 typedef struct {
1049 int count;
1050 MonoMethod* methods [MAX_FRAMES];
1051 int32_t il_offsets [MAX_FRAMES];
1052 int32_t native_offsets [MAX_FRAMES];
1053 } FrameData;
1054 static int num_frames = MAX_FRAMES;
1055
1056 static mono_bool
1057 walk_stack (MonoMethod *method, int32_t native_offset, int32_t il_offset, mono_bool managed, void* data)
1058 {
1059 FrameData *frame = (FrameData *)data;
1060 if (method && frame->count < num_frames) {
1061 frame->il_offsets [frame->count] = il_offset;
1062 frame->native_offsets [frame->count] = native_offset;
1063 frame->methods [frame->count++] = method;
1064 //printf ("In %d %s at %d (native: %d)\n", frame->count, mono_method_get_name (method), il_offset, native_offset);
1065 }
1066 return frame->count == num_frames;
1067 }
1068
1069 /*
1070 * a note about stack walks: they can cause more profiler events to fire,
1071 * so we need to make sure they don't happen after we started emitting an
1072 * event, hence the collect_bt/emit_bt split.
1073 */
1074 static void
1075 collect_bt (FrameData *data)
1076 {
1077 data->count = 0;
1078 mono_stack_walk_no_il (walk_stack, data);
1079 }
1080
1081 static void
1082 emit_bt (MonoProfiler *prof, LogBuffer *logbuffer, FrameData *data)
1083 {
1084 /* FIXME: this is actually tons of data and we should
1085 * just output it the first time and use an id the next
1086 */
1087 if (data->count > num_frames)
1088 printf ("bad num frames: %d\n", data->count);
1089 emit_value (logbuffer, 0); /* flags */
1090 emit_value (logbuffer, data->count);
1091 //if (*p != data.count) {
1092 // printf ("bad num frames enc at %d: %d -> %d\n", count, data.count, *p); printf ("frames end: %p->%p\n", p, logbuffer->data); exit(0);}
1093 while (data->count) {
1094 emit_method_as_ptr (prof, logbuffer, data->methods [--data->count]);
1095 }
1096 }
1097
1098 static void
1099 gc_alloc (MonoProfiler *prof, MonoObject *obj, MonoClass *klass)
1100 {
1101 uint64_t now;
1102 uintptr_t len;
1103 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces)? TYPE_ALLOC_BT: 0;
1104 FrameData data;
1105 LogBuffer *logbuffer;
1106 len = mono_object_get_size (obj);
1107 /* account for object alignment in the heap */
1108 len += 7;
1109 len &= ~7;
1110 if (do_bt)
1111 collect_bt (&data);
1112 logbuffer = ensure_logbuf (
1113 EVENT_SIZE /* event */ +
1114 LEB128_SIZE /* time */ +
1115 LEB128_SIZE /* klass */ +
1116 LEB128_SIZE /* obj */ +
1117 LEB128_SIZE /* size */ +
1118 (do_bt ? (
1119 LEB128_SIZE /* flags */ +
1120 LEB128_SIZE /* count */ +
1121 data.count * (
1122 LEB128_SIZE /* method */
1123 )
1124 ) : 0)
1125 );
1126 now = current_time ();
1127 ENTER_LOG (logbuffer, "gcalloc");
1128 emit_byte (logbuffer, do_bt | TYPE_ALLOC);
1129 emit_time (logbuffer, now);
1130 emit_ptr (logbuffer, klass);
1131 emit_obj (logbuffer, obj);
1132 emit_value (logbuffer, len);
1133 if (do_bt)
1134 emit_bt (prof, logbuffer, &data);
1135 EXIT_LOG (logbuffer);
1136 if (logbuffer->next)
1137 safe_send (prof, logbuffer);
1138 process_requests (prof);
1139 //printf ("gc alloc %s at %p\n", mono_class_get_name (klass), obj);
1140 }
1141
1142 static void
1143 gc_moves (MonoProfiler *prof, void **objects, int num)
1144 {
1145 int i;
1146 uint64_t now;
1147 LogBuffer *logbuffer = ensure_logbuf (
1148 EVENT_SIZE /* event */ +
1149 LEB128_SIZE /* time */ +
1150 LEB128_SIZE /* num */ +
1151 num * (
1152 LEB128_SIZE /* object */
1153 )
1154 );
1155 now = current_time ();
1156 ENTER_LOG (logbuffer, "gcmove");
1157 emit_byte (logbuffer, TYPE_GC_MOVE | TYPE_GC);
1158 emit_time (logbuffer, now);
1159 emit_value (logbuffer, num);
1160 for (i = 0; i < num; ++i)
1161 emit_obj (logbuffer, objects [i]);
1162 //printf ("gc moved %d objects\n", num/2);
1163 EXIT_LOG (logbuffer);
1164 }
1165
1166 static void
1167 gc_roots (MonoProfiler *prof, int num, void **objects, int *root_types, uintptr_t *extra_info)
1168 {
1169 int i;
1170 LogBuffer *logbuffer = ensure_logbuf (
1171 EVENT_SIZE /* event */ +
1172 LEB128_SIZE /* num */ +
1173 LEB128_SIZE /* collections */ +
1174 num * (
1175 LEB128_SIZE /* object */ +
1176 LEB128_SIZE /* root type */ +
1177 LEB128_SIZE /* extra info */
1178 )
1179 );
1180 ENTER_LOG (logbuffer, "gcroots");
1181 emit_byte (logbuffer, TYPE_HEAP_ROOT | TYPE_HEAP);
1182 emit_value (logbuffer, num);
1183 emit_value (logbuffer, mono_gc_collection_count (mono_gc_max_generation ()));
1184 for (i = 0; i < num; ++i) {
1185 emit_obj (logbuffer, objects [i]);
1186 emit_value (logbuffer, root_types [i]);
1187 emit_value (logbuffer, extra_info [i]);
1188 }
1189 EXIT_LOG (logbuffer);
1190 }
1191
1192 static void
1193 gc_handle (MonoProfiler *prof, int op, int type, uintptr_t handle, MonoObject *obj)
1194 {
1195 int do_bt = nocalls && InterlockedRead (&runtime_inited) && !notraces;
1196 uint64_t now;
1197 FrameData data;
1198
1199 if (do_bt)
1200 collect_bt (&data);
1201
1202 LogBuffer *logbuffer = ensure_logbuf (
1203 EVENT_SIZE /* event */ +
1204 LEB128_SIZE /* time */ +
1205 LEB128_SIZE /* type */ +
1206 LEB128_SIZE /* handle */ +
1207 (op == MONO_PROFILER_GC_HANDLE_CREATED ? (
1208 LEB128_SIZE /* obj */
1209 ) : 0) +
1210 (do_bt ? (
1211 LEB128_SIZE /* flags */ +
1212 LEB128_SIZE /* count */ +
1213 data.count * (
1214 LEB128_SIZE /* method */
1215 )
1216 ) : 0)
1217 );
1218
1219 now = current_time ();
1220 ENTER_LOG (logbuffer, "gchandle");
1221
1222 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1223 emit_byte (logbuffer, (do_bt ? TYPE_GC_HANDLE_CREATED_BT : TYPE_GC_HANDLE_CREATED) | TYPE_GC);
1224 else if (op == MONO_PROFILER_GC_HANDLE_DESTROYED)
1225 emit_byte (logbuffer, (do_bt ? TYPE_GC_HANDLE_DESTROYED_BT : TYPE_GC_HANDLE_DESTROYED) | TYPE_GC);
1226 else
1227 g_assert_not_reached ();
1228
1229 emit_time (logbuffer, now);
1230 emit_value (logbuffer, type);
1231 emit_value (logbuffer, handle);
1232
1233 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1234 emit_obj (logbuffer, obj);
1235
1236 if (do_bt)
1237 emit_bt (prof, logbuffer, &data);
1238
1239 EXIT_LOG (logbuffer);
1240 process_requests (prof);
1241 }
1242
1243 static char*
1244 push_nesting (char *p, MonoClass *klass)
1245 {
1246 MonoClass *nesting;
1247 const char *name;
1248 const char *nspace;
1249 nesting = mono_class_get_nesting_type (klass);
1250 if (nesting) {
1251 p = push_nesting (p, nesting);
1252 *p++ = '/';
1253 *p = 0;
1254 }
1255 name = mono_class_get_name (klass);
1256 nspace = mono_class_get_namespace (klass);
1257 if (*nspace) {
1258 strcpy (p, nspace);
1259 p += strlen (nspace);
1260 *p++ = '.';
1261 *p = 0;
1262 }
1263 strcpy (p, name);
1264 p += strlen (name);
1265 return p;
1266 }
1267
1268 static char*
1269 type_name (MonoClass *klass)
1270 {
1271 char buf [1024];
1272 char *p;
1273 push_nesting (buf, klass);
1274 p = (char *)malloc (strlen (buf) + 1);
1275 strcpy (p, buf);
1276 return p;
1277 }
1278
1279 static void
1280 image_loaded (MonoProfiler *prof, MonoImage *image, int result)
1281 {
1282 uint64_t now;
1283 const char *name;
1284 int nlen;
1285 LogBuffer *logbuffer;
1286 if (result != MONO_PROFILE_OK)
1287 return;
1288 name = mono_image_get_filename (image);
1289 nlen = strlen (name) + 1;
1290 logbuffer = ensure_logbuf (
1291 EVENT_SIZE /* event */ +
1292 LEB128_SIZE /* time */ +
1293 EVENT_SIZE /* type */ +
1294 LEB128_SIZE /* image */ +
1295 LEB128_SIZE /* flags */ +
1296 nlen /* name */
1297 );
1298 now = current_time ();
1299 ENTER_LOG (logbuffer, "image");
1300 emit_byte (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1301 emit_time (logbuffer, now);
1302 emit_byte (logbuffer, TYPE_IMAGE);
1303 emit_ptr (logbuffer, image);
1304 emit_value (logbuffer, 0); /* flags */
1305 memcpy (logbuffer->data, name, nlen);
1306 logbuffer->data += nlen;
1307 //printf ("loaded image %p (%s)\n", image, name);
1308 EXIT_LOG (logbuffer);
1309 if (logbuffer->next)
1310 safe_send (prof, logbuffer);
1311 process_requests (prof);
1312 }
1313
1314 static void
1315 image_unloaded (MonoProfiler *prof, MonoImage *image)
1316 {
1317 const char *name = mono_image_get_filename (image);
1318 int nlen = strlen (name) + 1;
1319 LogBuffer *logbuffer = ensure_logbuf (
1320 EVENT_SIZE /* event */ +
1321 LEB128_SIZE /* time */ +
1322 EVENT_SIZE /* type */ +
1323 LEB128_SIZE /* image */ +
1324 LEB128_SIZE /* flags */ +
1325 nlen /* name */
1326 );
1327 uint64_t now = current_time ();
1328
1329 ENTER_LOG (logbuffer, "image-unload");
1330 emit_byte (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1331 emit_time (logbuffer, now);
1332 emit_byte (logbuffer, TYPE_IMAGE);
1333 emit_ptr (logbuffer, image);
1334 emit_value (logbuffer, 0); /* flags */
1335 memcpy (logbuffer->data, name, nlen);
1336 logbuffer->data += nlen;
1337 EXIT_LOG (logbuffer);
1338
1339 if (logbuffer->next)
1340 safe_send (prof, logbuffer);
1341
1342 process_requests (prof);
1343 }
1344
1345 static void
1346 assembly_loaded (MonoProfiler *prof, MonoAssembly *assembly, int result)
1347 {
1348 if (result != MONO_PROFILE_OK)
1349 return;
1350
1351 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1352 int nlen = strlen (name) + 1;
1353 LogBuffer *logbuffer = ensure_logbuf (
1354 EVENT_SIZE /* event */ +
1355 LEB128_SIZE /* time */ +
1356 EVENT_SIZE /* type */ +
1357 LEB128_SIZE /* assembly */ +
1358 LEB128_SIZE /* flags */ +
1359 nlen /* name */
1360 );
1361 uint64_t now = current_time ();
1362
1363 ENTER_LOG (logbuffer, "assembly-load");
1364 emit_byte (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1365 emit_time (logbuffer, now);
1366 emit_byte (logbuffer, TYPE_ASSEMBLY);
1367 emit_ptr (logbuffer, assembly);
1368 emit_value (logbuffer, 0); /* flags */
1369 memcpy (logbuffer->data, name, nlen);
1370 logbuffer->data += nlen;
1371 EXIT_LOG (logbuffer);
1372
1373 mono_free (name);
1374
1375 if (logbuffer->next)
1376 safe_send (prof, logbuffer);
1377
1378 process_requests (prof);
1379 }
1380
1381 static void
1382 assembly_unloaded (MonoProfiler *prof, MonoAssembly *assembly)
1383 {
1384 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1385 int nlen = strlen (name) + 1;
1386 LogBuffer *logbuffer = ensure_logbuf (
1387 EVENT_SIZE /* event */ +
1388 LEB128_SIZE /* time */ +
1389 EVENT_SIZE /* type */ +
1390 LEB128_SIZE /* assembly */ +
1391 LEB128_SIZE /* flags */ +
1392 nlen /* name */
1393 );
1394 uint64_t now = current_time ();
1395
1396 ENTER_LOG (logbuffer, "assembly-unload");
1397 emit_byte (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1398 emit_time (logbuffer, now);
1399 emit_byte (logbuffer, TYPE_ASSEMBLY);
1400 emit_ptr (logbuffer, assembly);
1401 emit_value (logbuffer, 0); /* flags */
1402 memcpy (logbuffer->data, name, nlen);
1403 logbuffer->data += nlen;
1404 EXIT_LOG (logbuffer);
1405
1406 mono_free (name);
1407
1408 if (logbuffer->next)
1409 safe_send (prof, logbuffer);
1410
1411 process_requests (prof);
1412 }
1413
1414 static void
1415 class_loaded (MonoProfiler *prof, MonoClass *klass, int result)
1416 {
1417 uint64_t now;
1418 char *name;
1419 int nlen;
1420 MonoImage *image;
1421 LogBuffer *logbuffer;
1422 if (result != MONO_PROFILE_OK)
1423 return;
1424 if (InterlockedRead (&runtime_inited))
1425 name = mono_type_get_name (mono_class_get_type (klass));
1426 else
1427 name = type_name (klass);
1428 nlen = strlen (name) + 1;
1429 image = mono_class_get_image (klass);
1430 logbuffer = ensure_logbuf (
1431 EVENT_SIZE /* event */ +
1432 LEB128_SIZE /* time */ +
1433 EVENT_SIZE /* type */ +
1434 LEB128_SIZE /* klass */ +
1435 LEB128_SIZE /* image */ +
1436 LEB128_SIZE /* flags */ +
1437 nlen /* name */
1438 );
1439 now = current_time ();
1440 ENTER_LOG (logbuffer, "class");
1441 emit_byte (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1442 emit_time (logbuffer, now);
1443 emit_byte (logbuffer, TYPE_CLASS);
1444 emit_ptr (logbuffer, klass);
1445 emit_ptr (logbuffer, image);
1446 emit_value (logbuffer, 0); /* flags */
1447 memcpy (logbuffer->data, name, nlen);
1448 logbuffer->data += nlen;
1449 //printf ("loaded class %p (%s)\n", klass, name);
1450 if (runtime_inited)
1451 mono_free (name);
1452 else
1453 free (name);
1454 EXIT_LOG (logbuffer);
1455 if (logbuffer->next)
1456 safe_send (prof, logbuffer);
1457 process_requests (prof);
1458 }
1459
1460 static void
1461 class_unloaded (MonoProfiler *prof, MonoClass *klass)
1462 {
1463 char *name;
1464
1465 if (InterlockedRead (&runtime_inited))
1466 name = mono_type_get_name (mono_class_get_type (klass));
1467 else
1468 name = type_name (klass);
1469
1470 int nlen = strlen (name) + 1;
1471 MonoImage *image = mono_class_get_image (klass);
1472 LogBuffer *logbuffer = ensure_logbuf (
1473 EVENT_SIZE /* event */ +
1474 LEB128_SIZE /* time */ +
1475 EVENT_SIZE /* type */ +
1476 LEB128_SIZE /* klass */ +
1477 LEB128_SIZE /* image */ +
1478 LEB128_SIZE /* flags */ +
1479 nlen /* name */
1480 );
1481 uint64_t now = current_time ();
1482
1483 ENTER_LOG (logbuffer, "class-unload");
1484 emit_byte (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1485 emit_time (logbuffer, now);
1486 emit_byte (logbuffer, TYPE_CLASS);
1487 emit_ptr (logbuffer, klass);
1488 emit_ptr (logbuffer, image);
1489 emit_value (logbuffer, 0); /* flags */
1490 memcpy (logbuffer->data, name, nlen);
1491 logbuffer->data += nlen;
1492 EXIT_LOG (logbuffer);
1493
1494 if (runtime_inited)
1495 mono_free (name);
1496 else
1497 free (name);
1498
1499 if (logbuffer->next)
1500 safe_send (prof, logbuffer);
1501
1502 process_requests (prof);
1503 }
1504
1505 #ifndef DISABLE_HELPER_THREAD
1506 static void process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method);
1507 #endif /* DISABLE_HELPER_THREAD */
1508
1509 static void
1510 method_enter (MonoProfiler *prof, MonoMethod *method)
1511 {
1512 uint64_t now = current_time ();
1513
1514 #ifndef DISABLE_HELPER_THREAD
1515 process_method_enter_coverage (prof, method);
1516 #endif /* DISABLE_HELPER_THREAD */
1517
1518 LogBuffer *logbuffer = ensure_logbuf (
1519 EVENT_SIZE /* event */ +
1520 LEB128_SIZE /* time */ +
1521 LEB128_SIZE /* method */
1522 );
1523 if (logbuffer->call_depth++ > max_call_depth)
1524 return;
1525 ENTER_LOG (logbuffer, "enter");
1526 emit_byte (logbuffer, TYPE_ENTER | TYPE_METHOD);
1527 emit_time (logbuffer, now);
1528 emit_method (prof, logbuffer, method);
1529 EXIT_LOG (logbuffer);
1530
1531 process_requests (prof);
1532 }
1533
1534 static void
1535 method_leave (MonoProfiler *prof, MonoMethod *method)
1536 {
1537 uint64_t now;
1538 LogBuffer *logbuffer = ensure_logbuf (
1539 EVENT_SIZE /* event */ +
1540 LEB128_SIZE /* time */ +
1541 LEB128_SIZE /* method */
1542 );
1543 if (--logbuffer->call_depth > max_call_depth)
1544 return;
1545 now = current_time ();
1546 ENTER_LOG (logbuffer, "leave");
1547 emit_byte (logbuffer, TYPE_LEAVE | TYPE_METHOD);
1548 emit_time (logbuffer, now);
1549 emit_method (prof, logbuffer, method);
1550 EXIT_LOG (logbuffer);
1551 if (logbuffer->next)
1552 safe_send (prof, logbuffer);
1553 process_requests (prof);
1554 }
1555
1556 static void
1557 method_exc_leave (MonoProfiler *prof, MonoMethod *method)
1558 {
1559 uint64_t now;
1560 LogBuffer *logbuffer;
1561 if (nocalls)
1562 return;
1563 logbuffer = ensure_logbuf (
1564 EVENT_SIZE /* event */ +
1565 LEB128_SIZE /* time */ +
1566 LEB128_SIZE /* method */
1567 );
1568 if (--logbuffer->call_depth > max_call_depth)
1569 return;
1570 now = current_time ();
1571 ENTER_LOG (logbuffer, "eleave");
1572 emit_byte (logbuffer, TYPE_EXC_LEAVE | TYPE_METHOD);
1573 emit_time (logbuffer, now);
1574 emit_method (prof, logbuffer, method);
1575 EXIT_LOG (logbuffer);
1576 process_requests (prof);
1577 }
1578
1579 static void
1580 method_jitted (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *ji, int result)
1581 {
1582 if (result != MONO_PROFILE_OK)
1583 return;
1584
1585 register_method_local (prof, method, ji);
1586
1587 process_requests (prof);
1588 }
1589
1590 static void
1591 code_buffer_new (MonoProfiler *prof, void *buffer, int size, MonoProfilerCodeBufferType type, void *data)
1592 {
1593 uint64_t now;
1594 int nlen;
1595 char *name;
1596 LogBuffer *logbuffer;
1597 if (type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE) {
1598 name = (char *)data;
1599 nlen = strlen (name) + 1;
1600 } else {
1601 name = NULL;
1602 nlen = 0;
1603 }
1604 logbuffer = ensure_logbuf (
1605 EVENT_SIZE /* event */ +
1606 LEB128_SIZE /* time */ +
1607 LEB128_SIZE /* type */ +
1608 LEB128_SIZE /* buffer */ +
1609 LEB128_SIZE /* size */ +
1610 (name ? (
1611 nlen /* name */
1612 ) : 0)
1613 );
1614 now = current_time ();
1615 ENTER_LOG (logbuffer, "code buffer");
1616 emit_byte (logbuffer, TYPE_JITHELPER | TYPE_RUNTIME);
1617 emit_time (logbuffer, now);
1618 emit_value (logbuffer, type);
1619 emit_ptr (logbuffer, buffer);
1620 emit_value (logbuffer, size);
1621 if (name) {
1622 memcpy (logbuffer->data, name, nlen);
1623 logbuffer->data += nlen;
1624 }
1625 EXIT_LOG (logbuffer);
1626 process_requests (prof);
1627 }
1628
1629 static void
1630 throw_exc (MonoProfiler *prof, MonoObject *object)
1631 {
1632 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces)? TYPE_EXCEPTION_BT: 0;
1633 uint64_t now;
1634 FrameData data;
1635 LogBuffer *logbuffer;
1636 if (do_bt)
1637 collect_bt (&data);
1638 logbuffer = ensure_logbuf (
1639 EVENT_SIZE /* event */ +
1640 LEB128_SIZE /* time */ +
1641 LEB128_SIZE /* object */ +
1642 (do_bt ? (
1643 LEB128_SIZE /* flags */ +
1644 LEB128_SIZE /* count */ +
1645 data.count * (
1646 LEB128_SIZE /* method */
1647 )
1648 ) : 0)
1649 );
1650 now = current_time ();
1651 ENTER_LOG (logbuffer, "throw");
1652 emit_byte (logbuffer, do_bt | TYPE_EXCEPTION);
1653 emit_time (logbuffer, now);
1654 emit_obj (logbuffer, object);
1655 if (do_bt)
1656 emit_bt (prof, logbuffer, &data);
1657 EXIT_LOG (logbuffer);
1658 process_requests (prof);
1659 }
1660
1661 static void
1662 clause_exc (MonoProfiler *prof, MonoMethod *method, int clause_type, int clause_num)
1663 {
1664 uint64_t now;
1665 LogBuffer *logbuffer = ensure_logbuf (
1666 EVENT_SIZE /* event */ +
1667 LEB128_SIZE /* time */ +
1668 LEB128_SIZE /* clause type */ +
1669 LEB128_SIZE /* clause num */ +
1670 LEB128_SIZE /* method */
1671 );
1672 now = current_time ();
1673 ENTER_LOG (logbuffer, "clause");
1674 emit_byte (logbuffer, TYPE_EXCEPTION | TYPE_CLAUSE);
1675 emit_time (logbuffer, now);
1676 emit_value (logbuffer, clause_type);
1677 emit_value (logbuffer, clause_num);
1678 emit_method (prof, logbuffer, method);
1679 EXIT_LOG (logbuffer);
1680
1681 process_requests (prof);
1682 }
1683
1684 static void
1685 monitor_event (MonoProfiler *profiler, MonoObject *object, MonoProfilerMonitorEvent event)
1686 {
1687 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces && event == MONO_PROFILER_MONITOR_CONTENTION)? TYPE_MONITOR_BT: 0;
1688 uint64_t now;
1689 FrameData data;
1690 LogBuffer *logbuffer;
1691 if (do_bt)
1692 collect_bt (&data);
1693 logbuffer = ensure_logbuf (
1694 EVENT_SIZE /* event */ +
1695 LEB128_SIZE /* time */ +
1696 LEB128_SIZE /* object */ +
1697 (do_bt ? (
1698 LEB128_SIZE /* flags */ +
1699 LEB128_SIZE /* count */ +
1700 data.count * (
1701 LEB128_SIZE /* method */
1702 )
1703 ) : 0)
1704 );
1705 now = current_time ();
1706 ENTER_LOG (logbuffer, "monitor");
1707 emit_byte (logbuffer, (event << 4) | do_bt | TYPE_MONITOR);
1708 emit_time (logbuffer, now);
1709 emit_obj (logbuffer, object);
1710 if (do_bt)
1711 emit_bt (profiler, logbuffer, &data);
1712 EXIT_LOG (logbuffer);
1713 process_requests (profiler);
1714 }
1715
1716 static void
1717 thread_start (MonoProfiler *prof, uintptr_t tid)
1718 {
1719 //printf ("thread start %p\n", (void*)tid);
1720 init_thread ();
1721
1722 LogBuffer *logbuffer = ensure_logbuf (
1723 EVENT_SIZE /* event */ +
1724 LEB128_SIZE /* time */ +
1725 EVENT_SIZE /* type */ +
1726 LEB128_SIZE /* tid */ +
1727 LEB128_SIZE /* flags */
1728 );
1729 uint64_t now = current_time ();
1730
1731 ENTER_LOG (logbuffer, "thread-start");
1732 emit_byte (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1733 emit_time (logbuffer, now);
1734 emit_byte (logbuffer, TYPE_THREAD);
1735 emit_ptr (logbuffer, (void*) tid);
1736 emit_value (logbuffer, 0); /* flags */
1737 EXIT_LOG (logbuffer);
1738
1739 if (logbuffer->next)
1740 safe_send (prof, logbuffer);
1741
1742 process_requests (prof);
1743 }
1744
1745 static void
1746 thread_end (MonoProfiler *prof, uintptr_t tid)
1747 {
1748 if (TLS_GET (LogBuffer, tlsbuffer)) {
1749 LogBuffer *logbuffer = ensure_logbuf (
1750 EVENT_SIZE /* event */ +
1751 LEB128_SIZE /* time */ +
1752 EVENT_SIZE /* type */ +
1753 LEB128_SIZE /* tid */ +
1754 LEB128_SIZE /* flags */
1755 );
1756 uint64_t now = current_time ();
1757
1758 ENTER_LOG (logbuffer, "thread-end");
1759 emit_byte (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1760 emit_time (logbuffer, now);
1761 emit_byte (logbuffer, TYPE_THREAD);
1762 emit_ptr (logbuffer, (void*) tid);
1763 emit_value (logbuffer, 0); /* flags */
1764 EXIT_LOG (logbuffer);
1765
1766 send_buffer (prof, TLS_GET (GPtrArray, tlsmethodlist), logbuffer);
1767
1768 /* Don't process requests as the thread is detached from the runtime. */
1769 }
1770
1771 TLS_SET (tlsbuffer, NULL);
1772 TLS_SET (tlsmethodlist, NULL);
1773 }
1774
1775 static void
1776 domain_loaded (MonoProfiler *prof, MonoDomain *domain, int result)
1777 {
1778 if (result != MONO_PROFILE_OK)
1779 return;
1780
1781 LogBuffer *logbuffer = ensure_logbuf (
1782 EVENT_SIZE /* event */ +
1783 LEB128_SIZE /* time */ +
1784 EVENT_SIZE /* type */ +
1785 LEB128_SIZE /* domain id */ +
1786 LEB128_SIZE /* flags */
1787 );
1788 uint64_t now = current_time ();
1789
1790 ENTER_LOG (logbuffer, "domain-start");
1791 emit_byte (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1792 emit_time (logbuffer, now);
1793 emit_byte (logbuffer, TYPE_DOMAIN);
1794 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
1795 emit_value (logbuffer, 0); /* flags */
1796 EXIT_LOG (logbuffer);
1797
1798 if (logbuffer->next)
1799 safe_send (prof, logbuffer);
1800
1801 process_requests (prof);
1802 }
1803
1804 static void
1805 domain_unloaded (MonoProfiler *prof, MonoDomain *domain)
1806 {
1807 LogBuffer *logbuffer = ensure_logbuf (
1808 EVENT_SIZE /* event */ +
1809 LEB128_SIZE /* time */ +
1810 EVENT_SIZE /* type */ +
1811 LEB128_SIZE /* domain id */ +
1812 LEB128_SIZE /* flags */
1813 );
1814 uint64_t now = current_time ();
1815
1816 ENTER_LOG (logbuffer, "domain-end");
1817 emit_byte (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1818 emit_time (logbuffer, now);
1819 emit_byte (logbuffer, TYPE_DOMAIN);
1820 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
1821 emit_value (logbuffer, 0); /* flags */
1822 EXIT_LOG (logbuffer);
1823
1824 if (logbuffer->next)
1825 safe_send (prof, logbuffer);
1826
1827 process_requests (prof);
1828 }
1829
1830 static void
1831 domain_name (MonoProfiler *prof, MonoDomain *domain, const char *name)
1832 {
1833 int nlen = strlen (name) + 1;
1834 LogBuffer *logbuffer = ensure_logbuf (
1835 EVENT_SIZE /* event */ +
1836 LEB128_SIZE /* time */ +
1837 EVENT_SIZE /* type */ +
1838 LEB128_SIZE /* domain id */ +
1839 LEB128_SIZE /* flags */ +
1840 nlen /* name */
1841 );
1842 uint64_t now = current_time ();
1843
1844 ENTER_LOG (logbuffer, "domain-name");
1845 emit_byte (logbuffer, TYPE_METADATA);
1846 emit_time (logbuffer, now);
1847 emit_byte (logbuffer, TYPE_DOMAIN);
1848 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
1849 emit_value (logbuffer, 0); /* flags */
1850 memcpy (logbuffer->data, name, nlen);
1851 logbuffer->data += nlen;
1852 EXIT_LOG (logbuffer);
1853
1854 if (logbuffer->next)
1855 safe_send (prof, logbuffer);
1856
1857 process_requests (prof);
1858 }
1859
1860 static void
1861 context_loaded (MonoProfiler *prof, MonoAppContext *context)
1862 {
1863 LogBuffer *logbuffer = ensure_logbuf (
1864 EVENT_SIZE /* event */ +
1865 LEB128_SIZE /* time */ +
1866 EVENT_SIZE /* type */ +
1867 LEB128_SIZE /* context id */ +
1868 LEB128_SIZE /* flags */ +
1869 LEB128_SIZE /* domain id */
1870 );
1871 uint64_t now = current_time ();
1872
1873 ENTER_LOG (logbuffer, "context-start");
1874 emit_byte (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1875 emit_time (logbuffer, now);
1876 emit_byte (logbuffer, TYPE_CONTEXT);
1877 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
1878 emit_value (logbuffer, 0); /* flags */
1879 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
1880 EXIT_LOG (logbuffer);
1881
1882 if (logbuffer->next)
1883 safe_send (prof, logbuffer);
1884
1885 process_requests (prof);
1886 }
1887
1888 static void
1889 context_unloaded (MonoProfiler *prof, MonoAppContext *context)
1890 {
1891 LogBuffer *logbuffer = ensure_logbuf (
1892 EVENT_SIZE /* event */ +
1893 LEB128_SIZE /* time */ +
1894 EVENT_SIZE /* type */ +
1895 LEB128_SIZE /* context id */ +
1896 LEB128_SIZE /* flags */ +
1897 LEB128_SIZE /* domain id */
1898 );
1899 uint64_t now = current_time ();
1900
1901 ENTER_LOG (logbuffer, "context-end");
1902 emit_byte (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1903 emit_time (logbuffer, now);
1904 emit_byte (logbuffer, TYPE_CONTEXT);
1905 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
1906 emit_value (logbuffer, 0); /* flags */
1907 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
1908 EXIT_LOG (logbuffer);
1909
1910 if (logbuffer->next)
1911 safe_send (prof, logbuffer);
1912
1913 process_requests (prof);
1914 }
1915
1916 static void
1917 thread_name (MonoProfiler *prof, uintptr_t tid, const char *name)
1918 {
1919 int len = strlen (name) + 1;
1920 uint64_t now;
1921 LogBuffer *logbuffer;
1922 logbuffer = ensure_logbuf (
1923 EVENT_SIZE /* event */ +
1924 LEB128_SIZE /* time */ +
1925 EVENT_SIZE /* type */ +
1926 LEB128_SIZE /* tid */ +
1927 LEB128_SIZE /* flags */ +
1928 len /* name */
1929 );
1930 now = current_time ();
1931 ENTER_LOG (logbuffer, "tname");
1932 emit_byte (logbuffer, TYPE_METADATA);
1933 emit_time (logbuffer, now);
1934 emit_byte (logbuffer, TYPE_THREAD);
1935 emit_ptr (logbuffer, (void*)tid);
1936 emit_value (logbuffer, 0); /* flags */
1937 memcpy (logbuffer->data, name, len);
1938 logbuffer->data += len;
1939 EXIT_LOG (logbuffer);
1940
1941 if (logbuffer->next)
1942 safe_send (prof, logbuffer);
1943
1944 process_requests (prof);
1945 }
1946
1947 typedef struct {
1948 MonoMethod *method;
1949 MonoDomain *domain;
1950 void *base_address;
1951 int offset;
1952 } AsyncFrameInfo;
1953
1954 typedef struct {
1955 int count;
1956 AsyncFrameInfo *data;
1957 } AsyncFrameData;
1958
1959 static mono_bool
1960 async_walk_stack (MonoMethod *method, MonoDomain *domain, void *base_address, int offset, void *data)
1961 {
1962 AsyncFrameData *frame = (AsyncFrameData *)data;
1963 if (frame->count < num_frames) {
1964 frame->data [frame->count].method = method;
1965 frame->data [frame->count].domain = domain;
1966 frame->data [frame->count].base_address = base_address;
1967 frame->data [frame->count].offset = offset;
1968 // printf ("In %d at %p (dom %p) (native: %p)\n", frame->count, method, domain, base_address);
1969 frame->count++;
1970 }
1971 return frame->count == num_frames;
1972 }
1973
1974 /*
1975 (type | frame count), tid, time, ip, [method, domain, base address, offset] * frames
1976 */
1977 #define SAMPLE_EVENT_SIZE_IN_SLOTS(FRAMES) (4 + (FRAMES) * 4)
1978
1979 static void
1980 mono_sample_hit (MonoProfiler *profiler, unsigned char *ip, void *context)
1981 {
1982 StatBuffer *sbuf;
1983 AsyncFrameInfo frames [num_frames];
1984 AsyncFrameData bt_data = { 0, &frames [0]};
1985 uint64_t now;
1986 uintptr_t *data, *new_data, *old_data;
1987 uintptr_t elapsed;
1988 int timedout = 0;
1989 int i;
1990 if (in_shutdown)
1991 return;
1992 now = current_time ();
1993
1994 mono_stack_walk_async_safe (&async_walk_stack, context, &bt_data);
1995
1996 elapsed = (now - profiler->startup_time) / 10000;
1997 if (do_debug) {
1998 int len;
1999 char buf [256];
2000 snprintf (buf, sizeof (buf), "hit at %p in thread %p after %llu ms\n", ip, (void*)thread_id (), (unsigned long long int)elapsed/100);
2001 len = strlen (buf);
2002 ign_res (write (2, buf, len));
2003 }
2004 sbuf = profiler->stat_buffers;
2005 if (!sbuf)
2006 return;
2007 /* flush the buffer at 1 second intervals */
2008 if (sbuf->data > sbuf->buf && (elapsed - sbuf->buf [2]) > 100000) {
2009 timedout = 1;
2010 }
2011 /* overflow: 400 slots is a big enough number to reduce the chance of losing this event if many
2012 * threads hit this same spot at the same time
2013 */
2014 if (timedout || (sbuf->data + 400 >= sbuf->data_end)) {
2015 StatBuffer *oldsb, *foundsb;
2016 sbuf = create_stat_buffer ();
2017 do {
2018 oldsb = profiler->stat_buffers;
2019 sbuf->next = oldsb;
2020 foundsb = (StatBuffer *)InterlockedCompareExchangePointer ((void * volatile*)&profiler->stat_buffers, sbuf, oldsb);
2021 } while (foundsb != oldsb);
2022 if (do_debug)
2023 ign_res (write (2, "overflow\n", 9));
2024 /* notify the helper thread */
2025 if (sbuf->next->next) {
2026 char c = 0;
2027 ign_res (write (profiler->pipes [1], &c, 1));
2028 if (do_debug)
2029 ign_res (write (2, "notify\n", 7));
2030 }
2031 }
2032 do {
2033 old_data = sbuf->data;
2034 new_data = old_data + SAMPLE_EVENT_SIZE_IN_SLOTS (bt_data.count);
2035 data = (uintptr_t *)InterlockedCompareExchangePointer ((void * volatile*)&sbuf->data, new_data, old_data);
2036 } while (data != old_data);
2037 if (old_data >= sbuf->data_end)
2038 return; /* lost event */
2039 old_data [0] = 1 | (sample_type << 16) | (bt_data.count << 8);
2040 old_data [1] = thread_id ();
2041 old_data [2] = elapsed;
2042 old_data [3] = (uintptr_t)ip;
2043 for (i = 0; i < bt_data.count; ++i) {
2044 old_data [4 + 4 * i + 0] = (uintptr_t)frames [i].method;
2045 old_data [4 + 4 * i + 1] = (uintptr_t)frames [i].domain;
2046 old_data [4 + 4 * i + 2] = (uintptr_t)frames [i].base_address;
2047 old_data [4 + 4 * i + 3] = (uintptr_t)frames [i].offset;
2048 }
2049 }
2050
2051 static uintptr_t *code_pages = 0;
2052 static int num_code_pages = 0;
2053 static int size_code_pages = 0;
2054 #define CPAGE_SHIFT (9)
2055 #define CPAGE_SIZE (1 << CPAGE_SHIFT)
2056 #define CPAGE_MASK (~(CPAGE_SIZE - 1))
2057 #define CPAGE_ADDR(p) ((p) & CPAGE_MASK)
2058
2059 static uintptr_t
2060 add_code_page (uintptr_t *hash, uintptr_t hsize, uintptr_t page)
2061 {
2062 uintptr_t i;
2063 uintptr_t start_pos;
2064 start_pos = (page >> CPAGE_SHIFT) % hsize;
2065 i = start_pos;
2066 do {
2067 if (hash [i] && CPAGE_ADDR (hash [i]) == CPAGE_ADDR (page)) {
2068 return 0;
2069 } else if (!hash [i]) {
2070 hash [i] = page;
2071 return 1;
2072 }
2073 /* wrap around */
2074 if (++i == hsize)
2075 i = 0;
2076 } while (i != start_pos);
2077 /* should not happen */
2078 printf ("failed code page store\n");
2079 return 0;
2080 }
2081
2082 static void
2083 add_code_pointer (uintptr_t ip)
2084 {
2085 uintptr_t i;
2086 if (num_code_pages * 2 >= size_code_pages) {
2087 uintptr_t *n;
2088 uintptr_t old_size = size_code_pages;
2089 size_code_pages *= 2;
2090 if (size_code_pages == 0)
2091 size_code_pages = 16;
2092 n = (uintptr_t *)calloc (sizeof (uintptr_t) * size_code_pages, 1);
2093 for (i = 0; i < old_size; ++i) {
2094 if (code_pages [i])
2095 add_code_page (n, size_code_pages, code_pages [i]);
2096 }
2097 if (code_pages)
2098 free (code_pages);
2099 code_pages = n;
2100 }
2101 num_code_pages += add_code_page (code_pages, size_code_pages, ip & CPAGE_MASK);
2102 }
2103
2104 /* ELF code crashes on some systems. */
2105 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2106 #if 0
2107 static void
2108 dump_ubin (const char *filename, uintptr_t load_addr, uint64_t offset, uintptr_t size)
2109 {
2110 uint64_t now;
2111 LogBuffer *logbuffer;
2112 int len;
2113 len = strlen (filename) + 1;
2114 now = current_time ();
2115 logbuffer = ensure_logbuf (
2116 EVENT_SIZE /* event */ +
2117 LEB128_SIZE /* time */ +
2118 LEB128_SIZE /* load address */ +
2119 LEB128_SIZE /* offset */ +
2120 LEB128_SIZE /* size */ +
2121 nlen /* file name */
2122 );
2123 emit_byte (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_UBIN);
2124 emit_time (logbuffer, now);
2125 emit_svalue (logbuffer, load_addr);
2126 emit_uvalue (logbuffer, offset);
2127 emit_uvalue (logbuffer, size);
2128 memcpy (logbuffer->data, filename, len);
2129 logbuffer->data += len;
2130 }
2131 #endif
2132
2133 static void
2134 dump_usym (const char *name, uintptr_t value, uintptr_t size)
2135 {
2136 LogBuffer *logbuffer;
2137 int len;
2138 len = strlen (name) + 1;
2139 logbuffer = ensure_logbuf (
2140 EVENT_SIZE /* event */ +
2141 LEB128_SIZE /* value */ +
2142 LEB128_SIZE /* size */ +
2143 len /* name */
2144 );
2145 emit_byte (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_USYM);
2146 emit_ptr (logbuffer, (void*)value);
2147 emit_value (logbuffer, size);
2148 memcpy (logbuffer->data, name, len);
2149 logbuffer->data += len;
2150 }
2151
2152 /* ELF code crashes on some systems. */
2153 //#if defined(ELFMAG0)
2154 #if 0
2155
2156 #if SIZEOF_VOID_P == 4
2157 #define ELF_WSIZE 32
2158 #else
2159 #define ELF_WSIZE 64
2160 #endif
2161 #ifndef ElfW
2162 #define ElfW(type) _ElfW (Elf, ELF_WSIZE, type)
2163 #define _ElfW(e,w,t) _ElfW_1 (e, w, _##t)
2164 #define _ElfW_1(e,w,t) e##w##t
2165 #endif
2166
2167 static void
2168 dump_elf_symbols (ElfW(Sym) *symbols, int num_symbols, const char *strtab, void *load_addr)
2169 {
2170 int i;
2171 for (i = 0; i < num_symbols; ++i) {
2172 const char* sym;
2173 sym = strtab + symbols [i].st_name;
2174 if (!symbols [i].st_name || !symbols [i].st_size || (symbols [i].st_info & 0xf) != STT_FUNC)
2175 continue;
2176 //printf ("symbol %s at %d\n", sym, symbols [i].st_value);
2177 dump_usym (sym, (uintptr_t)load_addr + symbols [i].st_value, symbols [i].st_size);
2178 }
2179 }
2180
2181 static int
2182 read_elf_symbols (MonoProfiler *prof, const char *filename, void *load_addr)
2183 {
2184 int fd, i;
2185 void *data;
2186 struct stat statb;
2187 uint64_t file_size;
2188 ElfW(Ehdr) *header;
2189 ElfW(Shdr) *sheader;
2190 ElfW(Shdr) *shstrtabh;
2191 ElfW(Shdr) *symtabh = NULL;
2192 ElfW(Shdr) *strtabh = NULL;
2193 ElfW(Sym) *symbols = NULL;
2194 const char *strtab;
2195 int num_symbols;
2196
2197 fd = open (filename, O_RDONLY);
2198 if (fd < 0)
2199 return 0;
2200 if (fstat (fd, &statb) != 0) {
2201 close (fd);
2202 return 0;
2203 }
2204 file_size = statb.st_size;
2205 data = mmap (NULL, file_size, PROT_READ, MAP_PRIVATE, fd, 0);
2206 close (fd);
2207 if (data == MAP_FAILED)
2208 return 0;
2209 header = data;
2210 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2211 header->e_ident [EI_MAG1] != ELFMAG1 ||
2212 header->e_ident [EI_MAG2] != ELFMAG2 ||
2213 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2214 munmap (data, file_size);
2215 return 0;
2216 }
2217 sheader = (void*)((char*)data + header->e_shoff);
2218 shstrtabh = (void*)((char*)sheader + (header->e_shentsize * header->e_shstrndx));
2219 strtab = (const char*)data + shstrtabh->sh_offset;
2220 for (i = 0; i < header->e_shnum; ++i) {
2221 //printf ("section header: %d\n", sheader->sh_type);
2222 if (sheader->sh_type == SHT_SYMTAB) {
2223 symtabh = sheader;
2224 strtabh = (void*)((char*)data + header->e_shoff + sheader->sh_link * header->e_shentsize);
2225 /*printf ("symtab section header: %d, .strstr: %d\n", i, sheader->sh_link);*/
2226 break;
2227 }
2228 sheader = (void*)((char*)sheader + header->e_shentsize);
2229 }
2230 if (!symtabh || !strtabh) {
2231 munmap (data, file_size);
2232 return 0;
2233 }
2234 strtab = (const char*)data + strtabh->sh_offset;
2235 num_symbols = symtabh->sh_size / symtabh->sh_entsize;
2236 symbols = (void*)((char*)data + symtabh->sh_offset);
2237 dump_elf_symbols (symbols, num_symbols, strtab, load_addr);
2238 munmap (data, file_size);
2239 return 1;
2240 }
2241 #endif
2242
2243 /* ELF code crashes on some systems. */
2244 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2245 #if 0
2246 static int
2247 elf_dl_callback (struct dl_phdr_info *info, size_t size, void *data)
2248 {
2249 MonoProfiler *prof = data;
2250 char buf [256];
2251 const char *filename;
2252 BinaryObject *obj;
2253 char *a = (void*)info->dlpi_addr;
2254 int i, num_sym;
2255 ElfW(Dyn) *dyn = NULL;
2256 ElfW(Sym) *symtab = NULL;
2257 ElfW(Word) *hash_table = NULL;
2258 ElfW(Ehdr) *header = NULL;
2259 const char* strtab = NULL;
2260 for (obj = prof->binary_objects; obj; obj = obj->next) {
2261 if (obj->addr == a)
2262 return 0;
2263 }
2264 filename = info->dlpi_name;
2265 if (!filename)
2266 return 0;
2267 if (!info->dlpi_addr && !filename [0]) {
2268 int l = readlink ("/proc/self/exe", buf, sizeof (buf) - 1);
2269 if (l > 0) {
2270 buf [l] = 0;
2271 filename = buf;
2272 }
2273 }
2274 obj = calloc (sizeof (BinaryObject), 1);
2275 obj->addr = (void*)info->dlpi_addr;
2276 obj->name = pstrdup (filename);
2277 obj->next = prof->binary_objects;
2278 prof->binary_objects = obj;
2279 //printf ("loaded file: %s at %p, segments: %d\n", filename, (void*)info->dlpi_addr, info->dlpi_phnum);
2280 a = NULL;
2281 for (i = 0; i < info->dlpi_phnum; ++i) {
2282 //printf ("segment type %d file offset: %d, size: %d\n", info->dlpi_phdr[i].p_type, info->dlpi_phdr[i].p_offset, info->dlpi_phdr[i].p_memsz);
2283 if (info->dlpi_phdr[i].p_type == PT_LOAD && !header) {
2284 header = (ElfW(Ehdr)*)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2285 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2286 header->e_ident [EI_MAG1] != ELFMAG1 ||
2287 header->e_ident [EI_MAG2] != ELFMAG2 ||
2288 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2289 header = NULL;
2290 }
2291 dump_ubin (filename, info->dlpi_addr + info->dlpi_phdr[i].p_vaddr, info->dlpi_phdr[i].p_offset, info->dlpi_phdr[i].p_memsz);
2292 } else if (info->dlpi_phdr[i].p_type == PT_DYNAMIC) {
2293 dyn = (ElfW(Dyn) *)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2294 }
2295 }
2296 if (read_elf_symbols (prof, filename, (void*)info->dlpi_addr))
2297 return 0;
2298 if (!info->dlpi_name || !info->dlpi_name[0])
2299 return 0;
2300 if (!dyn)
2301 return 0;
2302 for (i = 0; dyn [i].d_tag != DT_NULL; ++i) {
2303 if (dyn [i].d_tag == DT_SYMTAB) {
2304 if (symtab && do_debug)
2305 printf ("multiple symtabs: %d\n", i);
2306 symtab = (ElfW(Sym) *)(a + dyn [i].d_un.d_ptr);
2307 } else if (dyn [i].d_tag == DT_HASH) {
2308 hash_table = (ElfW(Word) *)(a + dyn [i].d_un.d_ptr);
2309 } else if (dyn [i].d_tag == DT_STRTAB) {
2310 strtab = (const char*)(a + dyn [i].d_un.d_ptr);
2311 }
2312 }
2313 if (!hash_table)
2314 return 0;
2315 num_sym = hash_table [1];
2316 dump_elf_symbols (symtab, num_sym, strtab, (void*)info->dlpi_addr);
2317 return 0;
2318 }
2319
2320 static int
2321 load_binaries (MonoProfiler *prof)
2322 {
2323 dl_iterate_phdr (elf_dl_callback, prof);
2324 return 1;
2325 }
2326 #else
2327 static int
2328 load_binaries (MonoProfiler *prof)
2329 {
2330 return 0;
2331 }
2332 #endif
2333
2334 static const char*
2335 symbol_for (uintptr_t code)
2336 {
2337 #ifdef HAVE_DLADDR
2338 void *ip = (void*)code;
2339 Dl_info di;
2340 if (dladdr (ip, &di)) {
2341 if (di.dli_sname)
2342 return di.dli_sname;
2343 } else {
2344 /* char **names;
2345 names = backtrace_symbols (&ip, 1);
2346 if (names) {
2347 const char* p = names [0];
2348 free (names);
2349 return p;
2350 }
2351 */
2352 }
2353 #endif
2354 return NULL;
2355 }
2356
2357 static void
2358 dump_unmanaged_coderefs (MonoProfiler *prof)
2359 {
2360 int i;
2361 const char* last_symbol;
2362 uintptr_t addr, page_end;
2363
2364 if (load_binaries (prof))
2365 return;
2366 for (i = 0; i < size_code_pages; ++i) {
2367 const char* sym;
2368 if (!code_pages [i] || code_pages [i] & 1)
2369 continue;
2370 last_symbol = NULL;
2371 addr = CPAGE_ADDR (code_pages [i]);
2372 page_end = addr + CPAGE_SIZE;
2373 code_pages [i] |= 1;
2374 /* we dump the symbols for the whole page */
2375 for (; addr < page_end; addr += 16) {
2376 sym = symbol_for (addr);
2377 if (sym && sym == last_symbol)
2378 continue;
2379 last_symbol = sym;
2380 if (!sym)
2381 continue;
2382 dump_usym (sym, addr, 0); /* let's not guess the size */
2383 //printf ("found symbol at %p: %s\n", (void*)addr, sym);
2384 }
2385 }
2386 }
2387
2388 static gint
2389 compare_sample_events (gconstpointer a, gconstpointer b)
2390 {
2391 uintptr_t tid1 = (*(uintptr_t **) a) [1];
2392 uintptr_t tid2 = (*(uintptr_t **) b) [1];
2393
2394 return tid1 > tid2 ? 1 :
2395 tid1 < tid2 ? -1 :
2396 0;
2397 }
2398
2399 static void
2400 dump_sample_hits (MonoProfiler *prof, StatBuffer *sbuf)
2401 {
2402 LogBuffer *logbuffer;
2403 if (!sbuf)
2404 return;
2405 if (sbuf->next) {
2406 dump_sample_hits (prof, sbuf->next);
2407 free_buffer (sbuf->next, sbuf->next->size);
2408 sbuf->next = NULL;
2409 }
2410
2411 g_ptr_array_set_size (prof->sorted_sample_events, 0);
2412
2413 for (uintptr_t *sample = sbuf->buf; sample < sbuf->data;) {
2414 int count = sample [0] & 0xff;
2415 int mbt_count = (sample [0] & 0xff00) >> 8;
2416
2417 if (sample + SAMPLE_EVENT_SIZE_IN_SLOTS (mbt_count) > sbuf->data)
2418 break;
2419
2420 g_ptr_array_add (prof->sorted_sample_events, sample);
2421
2422 sample += count + 3 + 4 * mbt_count;
2423 }
2424
2425 g_ptr_array_sort (prof->sorted_sample_events, compare_sample_events);
2426
2427 for (guint sidx = 0; sidx < prof->sorted_sample_events->len; sidx++) {
2428 uintptr_t *sample = (uintptr_t *)g_ptr_array_index (prof->sorted_sample_events, sidx);
2429 int count = sample [0] & 0xff;
2430 int mbt_count = (sample [0] & 0xff00) >> 8;
2431 int type = sample [0] >> 16;
2432 uintptr_t *managed_sample_base = sample + count + 3;
2433 uintptr_t thread_id = sample [1];
2434
2435 for (int i = 0; i < mbt_count; ++i) {
2436 MonoMethod *method = (MonoMethod*)managed_sample_base [i * 4 + 0];
2437 MonoDomain *domain = (MonoDomain*)managed_sample_base [i * 4 + 1];
2438 void *address = (void*)managed_sample_base [i * 4 + 2];
2439
2440 if (!method) {
2441 MonoJitInfo *ji = mono_jit_info_table_find (domain, (char *)address);
2442
2443 if (ji)
2444 managed_sample_base [i * 4 + 0] = (uintptr_t)mono_jit_info_get_method (ji);
2445 }
2446 }
2447
2448 logbuffer = ensure_logbuf (
2449 EVENT_SIZE /* event */ +
2450 LEB128_SIZE /* type */ +
2451 LEB128_SIZE /* time */ +
2452 LEB128_SIZE /* tid */ +
2453 LEB128_SIZE /* count */ +
2454 count * (
2455 LEB128_SIZE /* ip */
2456 ) +
2457 LEB128_SIZE /* managed count */ +
2458 mbt_count * (
2459 LEB128_SIZE /* method */ +
2460 LEB128_SIZE /* il offset */ +
2461 LEB128_SIZE /* native offset */
2462 )
2463 );
2464 emit_byte (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_HIT);
2465 emit_value (logbuffer, type);
2466 emit_uvalue (logbuffer, prof->startup_time + (uint64_t)sample [2] * (uint64_t)10000);
2467 emit_ptr (logbuffer, (void *) thread_id);
2468 emit_value (logbuffer, count);
2469 for (int i = 0; i < count; ++i) {
2470 emit_ptr (logbuffer, (void*)sample [i + 3]);
2471 add_code_pointer (sample [i + 3]);
2472 }
2473
2474 sample += count + 3;
2475 /* new in data version 6 */
2476 emit_uvalue (logbuffer, mbt_count);
2477 for (int i = 0; i < mbt_count; ++i) {
2478 MonoMethod *method = (MonoMethod *) sample [i * 4 + 0];
2479 uintptr_t native_offset = sample [i * 4 + 3];
2480
2481 emit_method (prof, logbuffer, method);
2482 emit_svalue (logbuffer, 0); /* il offset will always be 0 from now on */
2483 emit_svalue (logbuffer, native_offset);
2484 }
2485 }
2486
2487 dump_unmanaged_coderefs (prof);
2488 }
2489
2490 #if USE_PERF_EVENTS
2491
2492 static int
2493 mono_cpu_count (void)
2494 {
2495 int count = 0;
2496 #ifdef PLATFORM_ANDROID
2497 /* Android tries really hard to save power by powering off CPUs on SMP phones which
2498 * means the normal way to query cpu count returns a wrong value with userspace API.
2499 * Instead we use /sys entries to query the actual hardware CPU count.
2500 */
2501 char buffer[8] = {'\0'};
2502 int present = open ("/sys/devices/system/cpu/present", O_RDONLY);
2503 /* Format of the /sys entry is a cpulist of indexes which in the case
2504 * of present is always of the form "0-(n-1)" when there is more than
2505 * 1 core, n being the number of CPU cores in the system. Otherwise
2506 * the value is simply 0
2507 */
2508 if (present != -1 && read (present, (char*)buffer, sizeof (buffer)) > 3)
2509 count = strtol (((char*)buffer) + 2, NULL, 10);
2510 if (present != -1)
2511 close (present);
2512 if (count > 0)
2513 return count + 1;
2514 #endif
2515 #ifdef _SC_NPROCESSORS_ONLN
2516 count = sysconf (_SC_NPROCESSORS_ONLN);
2517 if (count > 0)
2518 return count;
2519 #endif
2520 #ifdef USE_SYSCTL
2521 {
2522 int mib [2];
2523 size_t len = sizeof (int);
2524 mib [0] = CTL_HW;
2525 mib [1] = HW_NCPU;
2526 if (sysctl (mib, 2, &count, &len, NULL, 0) == 0)
2527 return count;
2528 }
2529 #endif
2530 #ifdef HOST_WIN32
2531 {
2532 SYSTEM_INFO info;
2533 GetSystemInfo (&info);
2534 return info.dwNumberOfProcessors;
2535 }
2536 #endif
2537 /* FIXME: warn */
2538 return 1;
2539 }
2540
2541 typedef struct {
2542 int perf_fd;
2543 unsigned int prev_pos;
2544 void *mmap_base;
2545 struct perf_event_mmap_page *page_desc;
2546 } PerfData ;
2547
2548 static PerfData *perf_data = NULL;
2549 static int num_perf;
2550 #define PERF_PAGES_SHIFT 4
2551 static int num_pages = 1 << PERF_PAGES_SHIFT;
2552 static unsigned int mmap_mask;
2553
2554 typedef struct {
2555 struct perf_event_header h;
2556 uint64_t ip;
2557 uint32_t pid;
2558 uint32_t tid;
2559 uint64_t timestamp;
2560 uint64_t period;
2561 uint64_t nframes;
2562 } PSample;
2563
2564 static int
2565 perf_event_syscall (struct perf_event_attr *attr, pid_t pid, int cpu, int group_fd, unsigned long flags)
2566 {
2567 attr->size = PERF_ATTR_SIZE_VER0;
2568 //printf ("perf attr size: %d\n", attr->size);
2569 #if defined(__x86_64__)
2570 return syscall(/*__NR_perf_event_open*/ 298, attr, pid, cpu, group_fd, flags);
2571 #elif defined(__i386__)
2572 return syscall(/*__NR_perf_event_open*/ 336, attr, pid, cpu, group_fd, flags);
2573 #elif defined(__arm__) || defined (__aarch64__)
2574 return syscall(/*__NR_perf_event_open*/ 364, attr, pid, cpu, group_fd, flags);
2575 #else
2576 return -1;
2577 #endif
2578 }
2579
2580 static int
2581 setup_perf_map (PerfData *perf)
2582 {
2583 perf->mmap_base = mmap (NULL, (num_pages + 1) * getpagesize (), PROT_READ|PROT_WRITE, MAP_SHARED, perf->perf_fd, 0);
2584 if (perf->mmap_base == MAP_FAILED) {
2585 if (do_debug)
2586 printf ("failed mmap\n");
2587 return 0;
2588 }
2589 perf->page_desc = perf->mmap_base;
2590 if (do_debug)
2591 printf ("mmap version: %d\n", perf->page_desc->version);
2592 return 1;
2593 }
2594
2595 static void
2596 dump_perf_hits (MonoProfiler *prof, void *buf, int size)
2597 {
2598 LogBuffer *logbuffer;
2599 int count = 1;
2600 int mbt_count = 0;
2601 void *end = (char*)buf + size;
2602 int samples = 0;
2603 int pid = getpid ();
2604
2605 while (buf < end) {
2606 PSample *s = buf;
2607 if (s->h.size == 0)
2608 break;
2609 if (pid != s->pid) {
2610 if (do_debug)
2611 printf ("event for different pid: %d\n", s->pid);
2612 buf = (char*)buf + s->h.size;
2613 continue;
2614 }
2615 /*ip = (void*)s->ip;
2616 printf ("sample: %d, size: %d, ip: %p (%s), timestamp: %llu, nframes: %llu\n",
2617 s->h.type, s->h.size, ip, symbol_for (ip), s->timestamp, s->nframes);*/
2618 logbuffer = ensure_logbuf (
2619 EVENT_SIZE /* event */ +
2620 LEB128_SIZE /* type */ +
2621 LEB128_SIZE /* time */ +
2622 LEB128_SIZE /* tid */ +
2623 LEB128_SIZE /* count */ +
2624 count * (
2625 LEB128_SIZE /* ip */
2626 ) +
2627 LEB128_SIZE /* managed count */ +
2628 mbt_count * (
2629 LEB128_SIZE /* method */ +
2630 LEB128_SIZE /* il offset */ +
2631 LEB128_SIZE /* native offset */
2632 )
2633 );
2634 emit_byte (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_HIT);
2635 emit_value (logbuffer, sample_type);
2636 emit_uvalue (logbuffer, s->timestamp - prof->startup_time);
2637 /*
2638 * No useful thread ID to write here, since throughout the
2639 * profiler we use pthread_self () but the ID we get from
2640 * perf is the kernel's thread ID.
2641 */
2642 emit_ptr (logbuffer, 0);
2643 emit_value (logbuffer, count);
2644 emit_ptr (logbuffer, (void*)(uintptr_t)s->ip);
2645 add_code_pointer (s->ip);
2646 /* no support here yet for the managed backtrace */
2647 emit_uvalue (logbuffer, mbt_count);
2648 buf = (char*)buf + s->h.size;
2649 samples++;
2650 }
2651 if (do_debug)
2652 printf ("dumped %d samples\n", samples);
2653 dump_unmanaged_coderefs (prof);
2654 }
2655
2656 /* read events from the ring buffer */
2657 static int
2658 read_perf_mmap (MonoProfiler* prof, int cpu)
2659 {
2660 PerfData *perf = perf_data + cpu;
2661 unsigned char *buf;
2662 unsigned char *data = (unsigned char*)perf->mmap_base + getpagesize ();
2663 unsigned int head = perf->page_desc->data_head;
2664 int diff, size;
2665 unsigned int old;
2666
2667 mono_memory_read_barrier ();
2668
2669 old = perf->prev_pos;
2670 diff = head - old;
2671 if (diff < 0) {
2672 if (do_debug)
2673 printf ("lost mmap events: old: %d, head: %d\n", old, head);
2674 old = head;
2675 }
2676 size = head - old;
2677 if ((old & mmap_mask) + size != (head & mmap_mask)) {
2678 buf = data + (old & mmap_mask);
2679 size = mmap_mask + 1 - (old & mmap_mask);
2680 old += size;
2681 /* size bytes at buf */
2682 if (do_debug)
2683 printf ("found1 bytes of events: %d\n", size);
2684 dump_perf_hits (prof, buf, size);
2685 }
2686 buf = data + (old & mmap_mask);
2687 size = head - old;
2688 /* size bytes at buf */
2689 if (do_debug)
2690 printf ("found bytes of events: %d\n", size);
2691 dump_perf_hits (prof, buf, size);
2692 old += size;
2693 perf->prev_pos = old;
2694 perf->page_desc->data_tail = old;
2695 return 0;
2696 }
2697
2698 static int
2699 setup_perf_event_for_cpu (PerfData *perf, int cpu)
2700 {
2701 struct perf_event_attr attr;
2702 memset (&attr, 0, sizeof (attr));
2703 attr.type = PERF_TYPE_HARDWARE;
2704 switch (sample_type) {
2705 case SAMPLE_CYCLES: attr.config = PERF_COUNT_HW_CPU_CYCLES; break;
2706 case SAMPLE_INSTRUCTIONS: attr.config = PERF_COUNT_HW_INSTRUCTIONS; break;
2707 case SAMPLE_CACHE_MISSES: attr.config = PERF_COUNT_HW_CACHE_MISSES; break;
2708 case SAMPLE_CACHE_REFS: attr.config = PERF_COUNT_HW_CACHE_REFERENCES; break;
2709 case SAMPLE_BRANCHES: attr.config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS; break;
2710 case SAMPLE_BRANCH_MISSES: attr.config = PERF_COUNT_HW_BRANCH_MISSES; break;
2711 default: attr.config = PERF_COUNT_HW_CPU_CYCLES; break;
2712 }
2713 attr.sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_PERIOD | PERF_SAMPLE_TIME;
2714 // attr.sample_type |= PERF_SAMPLE_CALLCHAIN;
2715 attr.read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING | PERF_FORMAT_ID;
2716 attr.inherit = 1;
2717 attr.freq = 1;
2718 attr.sample_freq = sample_freq;
2719
2720 perf->perf_fd = perf_event_syscall (&attr, getpid (), cpu, -1, 0);
2721 if (do_debug)
2722 printf ("perf fd: %d, freq: %d, event: %llu\n", perf->perf_fd, sample_freq, attr.config);
2723 if (perf->perf_fd < 0) {
2724 if (perf->perf_fd == -EPERM) {
2725 fprintf (stderr, "Perf syscall denied, do \"echo 1 > /proc/sys/kernel/perf_event_paranoid\" as root to enable.\n");
2726 } else {
2727 if (do_debug)
2728 perror ("open perf event");
2729 }
2730 return 0;
2731 }
2732 if (!setup_perf_map (perf)) {
2733 close (perf->perf_fd);
2734 perf->perf_fd = -1;
2735 return 0;
2736 }
2737 return 1;
2738 }
2739
2740 static int
2741 setup_perf_event (void)
2742 {
2743 int i, count = 0;
2744 mmap_mask = num_pages * getpagesize () - 1;
2745 num_perf = mono_cpu_count ();
2746 perf_data = calloc (num_perf, sizeof (PerfData));
2747 for (i = 0; i < num_perf; ++i) {
2748 count += setup_perf_event_for_cpu (perf_data + i, i);
2749 }
2750 if (count)
2751 return 1;
2752 free (perf_data);
2753 perf_data = NULL;
2754 return 0;
2755 }
2756
2757 #endif /* USE_PERF_EVENTS */
2758
2759 #ifndef DISABLE_HELPER_THREAD
2760
2761 typedef struct MonoCounterAgent {
2762 MonoCounter *counter;
2763 // MonoCounterAgent specific data :
2764 void *value;
2765 size_t value_size;
2766 short index;
2767 short emitted;
2768 struct MonoCounterAgent *next;
2769 } MonoCounterAgent;
2770
2771 static MonoCounterAgent* counters;
2772 static gboolean counters_initialized = FALSE;
2773 static int counters_index = 1;
2774 static mono_mutex_t counters_mutex;
2775
2776 static void
2777 counters_add_agent (MonoCounter *counter)
2778 {
2779 MonoCounterAgent *agent, *item;
2780
2781 if (!counters_initialized)
2782 return;
2783
2784 mono_os_mutex_lock (&counters_mutex);
2785
2786 for (agent = counters; agent; agent = agent->next) {
2787 if (agent->counter == counter) {
2788 agent->value_size = 0;
2789 if (agent->value) {
2790 free (agent->value);
2791 agent->value = NULL;
2792 }
2793 mono_os_mutex_unlock (&counters_mutex);
2794 return;
2795 }
2796 }
2797
2798 agent = (MonoCounterAgent *)malloc (sizeof (MonoCounterAgent));
2799 agent->counter = counter;
2800 agent->value = NULL;
2801 agent->value_size = 0;
2802 agent->index = counters_index++;
2803 agent->emitted = 0;
2804 agent->next = NULL;
2805
2806 if (!counters) {
2807 counters = agent;
2808 } else {
2809 item = counters;
2810 while (item->next)
2811 item = item->next;
2812 item->next = agent;
2813 }
2814
2815 mono_os_mutex_unlock (&counters_mutex);
2816 }
2817
2818 static mono_bool
2819 counters_init_foreach_callback (MonoCounter *counter, gpointer data)
2820 {
2821 counters_add_agent (counter);
2822 return TRUE;
2823 }
2824
2825 static void
2826 counters_init (MonoProfiler *profiler)
2827 {
2828 assert (!counters_initialized);
2829
2830 mono_os_mutex_init (&counters_mutex);
2831
2832 counters_initialized = TRUE;
2833
2834 mono_counters_on_register (&counters_add_agent);
2835 mono_counters_foreach (counters_init_foreach_callback, NULL);
2836 }
2837
2838 static void
2839 counters_emit (MonoProfiler *profiler)
2840 {
2841 MonoCounterAgent *agent;
2842 LogBuffer *logbuffer;
2843 int len = 0;
2844 int size =
2845 EVENT_SIZE /* event */ +
2846 LEB128_SIZE /* len */
2847 ;
2848
2849 if (!counters_initialized)
2850 return;
2851
2852 mono_os_mutex_lock (&counters_mutex);
2853
2854 for (agent = counters; agent; agent = agent->next) {
2855 if (agent->emitted)
2856 continue;
2857
2858 size +=
2859 LEB128_SIZE /* section */ +
2860 strlen (mono_counter_get_name (agent->counter)) + 1 /* name */ +
2861 LEB128_SIZE /* type */ +
2862 LEB128_SIZE /* unit */ +
2863 LEB128_SIZE /* variance */ +
2864 LEB128_SIZE /* index */
2865 ;
2866
2867 len += 1;
2868 }
2869
2870 if (!len) {
2871 mono_os_mutex_unlock (&counters_mutex);
2872 return;
2873 }
2874
2875 logbuffer = ensure_logbuf (size);
2876
2877 ENTER_LOG (logbuffer, "counters");
2878 emit_byte (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
2879 emit_value (logbuffer, len);
2880 for (agent = counters; agent; agent = agent->next) {
2881 const char *name;
2882
2883 if (agent->emitted)
2884 continue;
2885
2886 name = mono_counter_get_name (agent->counter);
2887 emit_value (logbuffer, mono_counter_get_section (agent->counter));
2888 emit_string (logbuffer, name, strlen (name) + 1);
2889 emit_value (logbuffer, mono_counter_get_type (agent->counter));
2890 emit_value (logbuffer, mono_counter_get_unit (agent->counter));
2891 emit_value (logbuffer, mono_counter_get_variance (agent->counter));
2892 emit_value (logbuffer, agent->index);
2893
2894 agent->emitted = 1;
2895 }
2896 EXIT_LOG (logbuffer);
2897
2898 safe_send (profiler, logbuffer);
2899
2900 mono_os_mutex_unlock (&counters_mutex);
2901 }
2902
2903 static void
2904 counters_sample (MonoProfiler *profiler, uint64_t timestamp)
2905 {
2906 MonoCounterAgent *agent;
2907 MonoCounter *counter;
2908 LogBuffer *logbuffer;
2909 int type;
2910 int buffer_size;
2911 void *buffer;
2912 int size;
2913
2914 if (!counters_initialized)
2915 return;
2916
2917 counters_emit (profiler);
2918
2919 buffer_size = 8;
2920 buffer = calloc (1, buffer_size);
2921
2922 mono_os_mutex_lock (&counters_mutex);
2923
2924 size =
2925 EVENT_SIZE /* event */ +
2926 LEB128_SIZE /* time */
2927 ;
2928
2929 for (agent = counters; agent; agent = agent->next) {
2930 size +=
2931 LEB128_SIZE /* index */ +
2932 LEB128_SIZE /* type */ +
2933 mono_counter_get_size (agent->counter) /* value */
2934 ;
2935 }
2936
2937 size +=
2938 LEB128_SIZE /* stop marker */
2939 ;
2940
2941 logbuffer = ensure_logbuf (size);
2942
2943 ENTER_LOG (logbuffer, "counters");
2944 emit_byte (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE);
2945 emit_uvalue (logbuffer, timestamp);
2946 for (agent = counters; agent; agent = agent->next) {
2947 size_t size;
2948
2949 counter = agent->counter;
2950
2951 size = mono_counter_get_size (counter);
2952 if (size < 0) {
2953 continue; // FIXME error
2954 } else if (size > buffer_size) {
2955 buffer_size = size;
2956 buffer = realloc (buffer, buffer_size);
2957 }
2958
2959 memset (buffer, 0, buffer_size);
2960
2961 if (mono_counters_sample (counter, buffer, size) < 0)
2962 continue; // FIXME error
2963
2964 type = mono_counter_get_type (counter);
2965
2966 if (!agent->value) {
2967 agent->value = calloc (1, size);
2968 agent->value_size = size;
2969 } else {
2970 if (type == MONO_COUNTER_STRING) {
2971 if (strcmp (agent->value, buffer) == 0)
2972 continue;
2973 } else {
2974 if (agent->value_size == size && memcmp (agent->value, buffer, size) == 0)
2975 continue;
2976 }
2977 }
2978
2979 emit_uvalue (logbuffer, agent->index);
2980 emit_uvalue (logbuffer, type);
2981 switch (type) {
2982 case MONO_COUNTER_INT:
2983 #if SIZEOF_VOID_P == 4
2984 case MONO_COUNTER_WORD:
2985 #endif
2986 emit_svalue (logbuffer, *(int*)buffer - *(int*)agent->value);
2987 break;
2988 case MONO_COUNTER_UINT:
2989 emit_uvalue (logbuffer, *(guint*)buffer - *(guint*)agent->value);
2990 break;
2991 case MONO_COUNTER_TIME_INTERVAL:
2992 case MONO_COUNTER_LONG:
2993 #if SIZEOF_VOID_P == 8
2994 case MONO_COUNTER_WORD:
2995 #endif
2996 emit_svalue (logbuffer, *(gint64*)buffer - *(gint64*)agent->value);
2997 break;
2998 case MONO_COUNTER_ULONG:
2999 emit_uvalue (logbuffer, *(guint64*)buffer - *(guint64*)agent->value);
3000 break;
3001 case MONO_COUNTER_DOUBLE:
3002 emit_double (logbuffer, *(double*)buffer);
3003 break;
3004 case MONO_COUNTER_STRING:
3005 if (size == 0) {
3006 emit_byte (logbuffer, 0);
3007 } else {
3008 emit_byte (logbuffer, 1);
3009 emit_string (logbuffer, (char*)buffer, size);
3010 }
3011 break;
3012 default:
3013 assert (0);
3014 }
3015
3016 if (type == MONO_COUNTER_STRING && size > agent->value_size) {
3017 agent->value = realloc (agent->value, size);
3018 agent->value_size = size;
3019 }
3020
3021 if (size > 0)
3022 memcpy (agent->value, buffer, size);
3023 }
3024 free (buffer);
3025
3026 emit_value (logbuffer, 0);
3027 EXIT_LOG (logbuffer);
3028
3029 safe_send (profiler, logbuffer);
3030
3031 mono_os_mutex_unlock (&counters_mutex);
3032 }
3033
3034 typedef struct _PerfCounterAgent PerfCounterAgent;
3035 struct _PerfCounterAgent {
3036 PerfCounterAgent *next;
3037 int index;
3038 char *category_name;
3039 char *name;
3040 int type;
3041 gint64 value;
3042 guint8 emitted;
3043 guint8 updated;
3044 guint8 deleted;
3045 };
3046
3047 static PerfCounterAgent *perfcounters = NULL;
3048
3049 static void
3050 perfcounters_emit (MonoProfiler *profiler)
3051 {
3052 PerfCounterAgent *pcagent;
3053 LogBuffer *logbuffer;
3054 int len = 0;
3055 int size =
3056 EVENT_SIZE /* event */ +
3057 LEB128_SIZE /* len */
3058 ;
3059
3060 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3061 if (pcagent->emitted)
3062 continue;
3063
3064 size +=
3065 LEB128_SIZE /* section */ +
3066 strlen (pcagent->category_name) + 1 /* category name */ +
3067 strlen (pcagent->name) + 1 /* name */ +
3068 LEB128_SIZE /* type */ +
3069 LEB128_SIZE /* unit */ +
3070 LEB128_SIZE /* variance */ +
3071 LEB128_SIZE /* index */
3072 ;
3073
3074 len += 1;
3075 }
3076
3077 if (!len)
3078 return;
3079
3080 logbuffer = ensure_logbuf (size);
3081
3082 ENTER_LOG (logbuffer, "perfcounters");
3083 emit_byte (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
3084 emit_value (logbuffer, len);
3085 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3086 if (pcagent->emitted)
3087 continue;
3088
3089 emit_value (logbuffer, MONO_COUNTER_PERFCOUNTERS);
3090 emit_string (logbuffer, pcagent->category_name, strlen (pcagent->category_name) + 1);
3091 emit_string (logbuffer, pcagent->name, strlen (pcagent->name) + 1);
3092 emit_value (logbuffer, MONO_COUNTER_LONG);
3093 emit_value (logbuffer, MONO_COUNTER_RAW);
3094 emit_value (logbuffer, MONO_COUNTER_VARIABLE);
3095 emit_value (logbuffer, pcagent->index);
3096
3097 pcagent->emitted = 1;
3098 }
3099 EXIT_LOG (logbuffer);
3100
3101 safe_send (profiler, logbuffer);
3102 }
3103
3104 static gboolean
3105 perfcounters_foreach (char *category_name, char *name, unsigned char type, gint64 value, gpointer user_data)
3106 {
3107 PerfCounterAgent *pcagent;
3108
3109 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3110 if (strcmp (pcagent->category_name, category_name) != 0 || strcmp (pcagent->name, name) != 0)
3111 continue;
3112 if (pcagent->value == value)
3113 return TRUE;
3114
3115 pcagent->value = value;
3116 pcagent->updated = 1;
3117 pcagent->deleted = 0;
3118 return TRUE;
3119 }
3120
3121 pcagent = g_new0 (PerfCounterAgent, 1);
3122 pcagent->next = perfcounters;
3123 pcagent->index = counters_index++;
3124 pcagent->category_name = g_strdup (category_name);
3125 pcagent->name = g_strdup (name);
3126 pcagent->type = (int) type;
3127 pcagent->value = value;
3128 pcagent->emitted = 0;
3129 pcagent->updated = 1;
3130 pcagent->deleted = 0;
3131
3132 perfcounters = pcagent;
3133
3134 return TRUE;
3135 }
3136
3137 static void
3138 perfcounters_sample (MonoProfiler *profiler, uint64_t timestamp)
3139 {
3140 PerfCounterAgent *pcagent;
3141 LogBuffer *logbuffer;
3142 int size;
3143
3144 if (!counters_initialized)
3145 return;
3146
3147 mono_os_mutex_lock (&counters_mutex);
3148
3149 /* mark all perfcounters as deleted, foreach will unmark them as necessary */
3150 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next)
3151 pcagent->deleted = 1;
3152
3153 mono_perfcounter_foreach (perfcounters_foreach, perfcounters);
3154
3155 perfcounters_emit (profiler);
3156
3157 size =
3158 EVENT_SIZE /* event */ +
3159 LEB128_SIZE /* time */
3160 ;
3161
3162 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3163 if (pcagent->deleted || !pcagent->updated)
3164 continue;
3165
3166 size +=
3167 LEB128_SIZE /* index */ +
3168 LEB128_SIZE /* type */ +
3169 LEB128_SIZE /* value */
3170 ;
3171 }
3172
3173 size +=
3174 LEB128_SIZE /* stop marker */
3175 ;
3176
3177 logbuffer = ensure_logbuf (size);
3178
3179 ENTER_LOG (logbuffer, "perfcounters");
3180 emit_byte (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE);
3181 emit_uvalue (logbuffer, timestamp);
3182 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3183 if (pcagent->deleted || !pcagent->updated)
3184 continue;
3185 emit_uvalue (logbuffer, pcagent->index);
3186 emit_uvalue (logbuffer, MONO_COUNTER_LONG);
3187 emit_svalue (logbuffer, pcagent->value);
3188
3189 pcagent->updated = 0;
3190 }
3191
3192 emit_value (logbuffer, 0);
3193 EXIT_LOG (logbuffer);
3194
3195 safe_send (profiler, logbuffer);
3196
3197 mono_os_mutex_unlock (&counters_mutex);
3198 }
3199
3200 static void
3201 counters_and_perfcounters_sample (MonoProfiler *prof)
3202 {
3203 static uint64_t start = -1;
3204 uint64_t now;
3205
3206 if (start == -1)
3207 start = current_time ();
3208
3209 now = current_time ();
3210 counters_sample (prof, (now - start) / 1000/ 1000);
3211 perfcounters_sample (prof, (now - start) / 1000/ 1000);
3212 }
3213
3214 #define COVERAGE_DEBUG(x) if (debug_coverage) {x}
3215 static mono_mutex_t coverage_mutex;
3216 static MonoConcurrentHashTable *coverage_methods = NULL;
3217 static MonoConcurrentHashTable *coverage_assemblies = NULL;
3218 static MonoConcurrentHashTable *coverage_classes = NULL;
3219
3220 static MonoConcurrentHashTable *filtered_classes = NULL;
3221 static MonoConcurrentHashTable *entered_methods = NULL;
3222 static MonoConcurrentHashTable *image_to_methods = NULL;
3223 static MonoConcurrentHashTable *suppressed_assemblies = NULL;
3224 static gboolean coverage_initialized = FALSE;
3225
3226 static GPtrArray *coverage_data = NULL;
3227 static int previous_offset = 0;
3228
3229 typedef struct _MethodNode MethodNode;
3230 struct _MethodNode {
3231 MonoLockFreeQueueNode node;
3232 MonoMethod *method;
3233 };
3234
3235 typedef struct _CoverageEntry CoverageEntry;
3236 struct _CoverageEntry {
3237 int offset;
3238 int counter;
3239 char *filename;
3240 int line;
3241 int column;
3242 };
3243
3244 static void
3245 free_coverage_entry (gpointer data, gpointer userdata)
3246 {
3247 CoverageEntry *entry = (CoverageEntry *)data;
3248 g_free (entry->filename);
3249 g_free (entry);
3250 }
3251
3252 static void
3253 obtain_coverage_for_method (MonoProfiler *prof, const MonoProfileCoverageEntry *entry)
3254 {
3255 int offset = entry->iloffset - previous_offset;
3256 CoverageEntry *e = g_new (CoverageEntry, 1);
3257
3258 previous_offset = entry->iloffset;
3259
3260 e->offset = offset;
3261 e->counter = entry->counter;
3262 e->filename = g_strdup(entry->filename ? entry->filename : "");
3263 e->line = entry->line;
3264 e->column = entry->col;
3265
3266 g_ptr_array_add (coverage_data, e);
3267 }
3268
3269 static char *
3270 parse_generic_type_names(char *name)
3271 {
3272 char *new_name, *ret;
3273 int within_generic_declaration = 0, generic_members = 1;
3274
3275 if (name == NULL || *name == '\0')
3276 return g_strdup ("");
3277
3278 if (!(ret = new_name = (char *)calloc (strlen (name) * 4 + 1, sizeof (char))))
3279 return NULL;
3280
3281 do {
3282 switch (*name) {
3283 case '<':
3284 within_generic_declaration = 1;
3285 break;
3286
3287 case '>':
3288 within_generic_declaration = 0;
3289
3290 if (*(name - 1) != '<') {
3291 *new_name++ = '`';
3292 *new_name++ = '0' + generic_members;
3293 } else {
3294 memcpy (new_name, "&lt;&gt;", 8);
3295 new_name += 8;
3296 }
3297
3298 generic_members = 0;
3299 break;
3300
3301 case ',':
3302 generic_members++;
3303 break;
3304
3305 default:
3306 if (!within_generic_declaration)
3307 *new_name++ = *name;
3308
3309 break;
3310 }
3311 } while (*name++);
3312
3313 return ret;
3314 }
3315
3316 static int method_id;
3317 static void
3318 build_method_buffer (gpointer key, gpointer value, gpointer userdata)
3319 {
3320 MonoMethod *method = (MonoMethod *)value;
3321 MonoProfiler *prof = (MonoProfiler *)userdata;
3322 MonoClass *klass;
3323 MonoImage *image;
3324 char *class_name;
3325 const char *image_name, *method_name, *sig, *first_filename;
3326 LogBuffer *logbuffer;
3327 guint i;
3328
3329 previous_offset = 0;
3330 coverage_data = g_ptr_array_new ();
3331
3332 mono_profiler_coverage_get (prof, method, obtain_coverage_for_method);
3333
3334 klass = mono_method_get_class (method);
3335 image = mono_class_get_image (klass);
3336 image_name = mono_image_get_name (image);
3337
3338 sig = mono_signature_get_desc (mono_method_signature (method), TRUE);
3339 class_name = parse_generic_type_names (mono_type_get_name (mono_class_get_type (klass)));
3340 method_name = mono_method_get_name (method);
3341
3342 if (coverage_data->len != 0) {
3343 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[0];
3344 first_filename = entry->filename ? entry->filename : "";
3345 } else
3346 first_filename = "";
3347
3348 image_name = image_name ? image_name : "";
3349 sig = sig ? sig : "";
3350 method_name = method_name ? method_name : "";
3351
3352 logbuffer = ensure_logbuf (
3353 EVENT_SIZE /* event */ +
3354 strlen (image_name) + 1 /* image name */ +
3355 strlen (class_name) + 1 /* class name */ +
3356 strlen (method_name) + 1 /* method name */ +
3357 strlen (sig) + 1 /* signature */ +
3358 strlen (first_filename) + 1 /* first file name */ +
3359 LEB128_SIZE /* token */ +
3360 LEB128_SIZE /* method id */ +
3361 LEB128_SIZE /* entries */
3362 );
3363 ENTER_LOG (logbuffer, "coverage-methods");
3364
3365 emit_byte (logbuffer, TYPE_COVERAGE_METHOD | TYPE_COVERAGE);
3366 emit_string (logbuffer, image_name, strlen (image_name) + 1);
3367 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3368 emit_string (logbuffer, method_name, strlen (method_name) + 1);
3369 emit_string (logbuffer, sig, strlen (sig) + 1);
3370 emit_string (logbuffer, first_filename, strlen (first_filename) + 1);
3371
3372 emit_uvalue (logbuffer, mono_method_get_token (method));
3373 emit_uvalue (logbuffer, method_id);
3374 emit_value (logbuffer, coverage_data->len);
3375
3376 EXIT_LOG (logbuffer);
3377 safe_send (prof, logbuffer);
3378
3379 for (i = 0; i < coverage_data->len; i++) {
3380 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[i];
3381
3382 logbuffer = ensure_logbuf (
3383 EVENT_SIZE /* event */ +
3384 LEB128_SIZE /* method id */ +
3385 LEB128_SIZE /* offset */ +
3386 LEB128_SIZE /* counter */ +
3387 LEB128_SIZE /* line */ +
3388 LEB128_SIZE /* column */
3389 );
3390 ENTER_LOG (logbuffer, "coverage-statement");
3391
3392 emit_byte (logbuffer, TYPE_COVERAGE_STATEMENT | TYPE_COVERAGE);
3393 emit_uvalue (logbuffer, method_id);
3394 emit_uvalue (logbuffer, entry->offset);
3395 emit_uvalue (logbuffer, entry->counter);
3396 emit_uvalue (logbuffer, entry->line);
3397 emit_uvalue (logbuffer, entry->column);
3398
3399 EXIT_LOG (logbuffer);
3400 safe_send (prof, logbuffer);
3401 }
3402
3403 method_id++;
3404
3405 g_free (class_name);
3406
3407 g_ptr_array_foreach (coverage_data, free_coverage_entry, NULL);
3408 g_ptr_array_free (coverage_data, TRUE);
3409 coverage_data = NULL;
3410 }
3411
3412 /* This empties the queue */
3413 static guint
3414 count_queue (MonoLockFreeQueue *queue)
3415 {
3416 MonoLockFreeQueueNode *node;
3417 guint count = 0;
3418
3419 while ((node = mono_lock_free_queue_dequeue (queue))) {
3420 count++;
3421 mono_lock_free_queue_node_free (node);
3422 }
3423
3424 return count;
3425 }
3426
3427 static void
3428 build_class_buffer (gpointer key, gpointer value, gpointer userdata)
3429 {
3430 MonoClass *klass = (MonoClass *)key;
3431 MonoLockFreeQueue *class_methods = (MonoLockFreeQueue *)value;
3432 MonoProfiler *prof = (MonoProfiler *)userdata;
3433 MonoImage *image;
3434 char *class_name;
3435 const char *assembly_name;
3436 int number_of_methods, partially_covered;
3437 guint fully_covered;
3438 LogBuffer *logbuffer;
3439
3440 image = mono_class_get_image (klass);
3441 assembly_name = mono_image_get_name (image);
3442 class_name = mono_type_get_name (mono_class_get_type (klass));
3443
3444 assembly_name = assembly_name ? assembly_name : "";
3445 number_of_methods = mono_class_num_methods (klass);
3446 fully_covered = count_queue (class_methods);
3447 /* We don't handle partial covered yet */
3448 partially_covered = 0;
3449
3450 logbuffer = ensure_logbuf (
3451 EVENT_SIZE /* event */ +
3452 strlen (assembly_name) + 1 /* assembly name */ +
3453 strlen (class_name) + 1 /* class name */ +
3454 LEB128_SIZE /* no. methods */ +
3455 LEB128_SIZE /* fully covered */ +
3456 LEB128_SIZE /* partially covered */
3457 );
3458
3459 ENTER_LOG (logbuffer, "coverage-class");
3460 emit_byte (logbuffer, TYPE_COVERAGE_CLASS | TYPE_COVERAGE);
3461 emit_string (logbuffer, assembly_name, strlen (assembly_name) + 1);
3462 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3463 emit_uvalue (logbuffer, number_of_methods);
3464 emit_uvalue (logbuffer, fully_covered);
3465 emit_uvalue (logbuffer, partially_covered);
3466 EXIT_LOG (logbuffer);
3467
3468 safe_send (prof, logbuffer);
3469
3470 g_free (class_name);
3471 }
3472
3473 static void
3474 get_coverage_for_image (MonoImage *image, int *number_of_methods, guint *fully_covered, int *partially_covered)
3475 {
3476 MonoLockFreeQueue *image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3477
3478 *number_of_methods = mono_image_get_table_rows (image, MONO_TABLE_METHOD);
3479 if (image_methods)
3480 *fully_covered = count_queue (image_methods);
3481 else
3482 *fully_covered = 0;
3483
3484 // FIXME: We don't handle partially covered yet.
3485 *partially_covered = 0;
3486 }
3487
3488 static void
3489 build_assembly_buffer (gpointer key, gpointer value, gpointer userdata)
3490 {
3491 MonoAssembly *assembly = (MonoAssembly *)value;
3492 MonoProfiler *prof = (MonoProfiler *)userdata;
3493 MonoImage *image = mono_assembly_get_image (assembly);
3494 LogBuffer *logbuffer;
3495 const char *name, *guid, *filename;
3496 int number_of_methods = 0, partially_covered = 0;
3497 guint fully_covered = 0;
3498
3499 name = mono_image_get_name (image);
3500 guid = mono_image_get_guid (image);
3501 filename = mono_image_get_filename (image);
3502
3503 name = name ? name : "";
3504 guid = guid ? guid : "";
3505 filename = filename ? filename : "";
3506
3507 get_coverage_for_image (image, &number_of_methods, &fully_covered, &partially_covered);
3508
3509 logbuffer = ensure_logbuf (
3510 EVENT_SIZE /* event */ +
3511 strlen (name) + 1 /* name */ +
3512 strlen (guid) + 1 /* guid */ +
3513 strlen (filename) + 1 /* file name */ +
3514 LEB128_SIZE /* no. methods */ +
3515 LEB128_SIZE /* fully covered */ +
3516 LEB128_SIZE /* partially covered */
3517 );
3518
3519 ENTER_LOG (logbuffer, "coverage-assemblies");
3520 emit_byte (logbuffer, TYPE_COVERAGE_ASSEMBLY | TYPE_COVERAGE);
3521 emit_string (logbuffer, name, strlen (name) + 1);
3522 emit_string (logbuffer, guid, strlen (guid) + 1);
3523 emit_string (logbuffer, filename, strlen (filename) + 1);
3524 emit_uvalue (logbuffer, number_of_methods);
3525 emit_uvalue (logbuffer, fully_covered);
3526 emit_uvalue (logbuffer, partially_covered);
3527 EXIT_LOG (logbuffer);
3528
3529 safe_send (prof, logbuffer);
3530 }
3531
3532 static void
3533 dump_coverage (MonoProfiler *prof)
3534 {
3535 if (!coverage_initialized)
3536 return;
3537
3538 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Started dump\n");)
3539 method_id = 0;
3540
3541 mono_os_mutex_lock (&coverage_mutex);
3542 mono_conc_hashtable_foreach (coverage_assemblies, build_assembly_buffer, prof);
3543 mono_conc_hashtable_foreach (coverage_classes, build_class_buffer, prof);
3544 mono_conc_hashtable_foreach (coverage_methods, build_method_buffer, prof);
3545 mono_os_mutex_unlock (&coverage_mutex);
3546
3547 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Finished dump\n");)
3548 }
3549
3550 static void
3551 process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method)
3552 {
3553 MonoClass *klass;
3554 MonoImage *image;
3555
3556 if (!coverage_initialized)
3557 return;
3558
3559 klass = mono_method_get_class (method);
3560 image = mono_class_get_image (klass);
3561
3562 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)))
3563 return;
3564
3565 mono_os_mutex_lock (&coverage_mutex);
3566 mono_conc_hashtable_insert (entered_methods, method, method);
3567 mono_os_mutex_unlock (&coverage_mutex);
3568 }
3569
3570 static MonoLockFreeQueueNode *
3571 create_method_node (MonoMethod *method)
3572 {
3573 MethodNode *node = (MethodNode *)g_malloc (sizeof (MethodNode));
3574 mono_lock_free_queue_node_init ((MonoLockFreeQueueNode *) node, FALSE);
3575 node->method = method;
3576
3577 return (MonoLockFreeQueueNode *) node;
3578 }
3579
3580 static gboolean
3581 coverage_filter (MonoProfiler *prof, MonoMethod *method)
3582 {
3583 MonoClass *klass;
3584 MonoImage *image;
3585 MonoAssembly *assembly;
3586 MonoMethodHeader *header;
3587 guint32 iflags, flags, code_size;
3588 char *fqn, *classname;
3589 gboolean has_positive, found;
3590 MonoLockFreeQueue *image_methods, *class_methods;
3591 MonoLockFreeQueueNode *node;
3592
3593 if (!coverage_initialized)
3594 return FALSE;
3595
3596 COVERAGE_DEBUG(fprintf (stderr, "Coverage filter for %s\n", mono_method_get_name (method));)
3597
3598 flags = mono_method_get_flags (method, &iflags);
3599 if ((iflags & 0x1000 /*METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL*/) ||
3600 (flags & 0x2000 /*METHOD_ATTRIBUTE_PINVOKE_IMPL*/)) {
3601 COVERAGE_DEBUG(fprintf (stderr, " Internal call or pinvoke - ignoring\n");)
3602 return FALSE;
3603 }
3604
3605 // Don't need to do anything else if we're already tracking this method
3606 if (mono_conc_hashtable_lookup (coverage_methods, method)) {
3607 COVERAGE_DEBUG(fprintf (stderr, " Already tracking\n");)
3608 return TRUE;
3609 }
3610
3611 klass = mono_method_get_class (method);
3612 image = mono_class_get_image (klass);
3613
3614 // Don't handle coverage for the core assemblies
3615 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)) != NULL)
3616 return FALSE;
3617
3618 if (prof->coverage_filters) {
3619 /* Check already filtered classes first */
3620 if (mono_conc_hashtable_lookup (filtered_classes, klass)) {
3621 COVERAGE_DEBUG(fprintf (stderr, " Already filtered\n");)
3622 return FALSE;
3623 }
3624
3625 classname = mono_type_get_name (mono_class_get_type (klass));
3626
3627 fqn = g_strdup_printf ("[%s]%s", mono_image_get_name (image), classname);
3628
3629 COVERAGE_DEBUG(fprintf (stderr, " Looking for %s in filter\n", fqn);)
3630 // Check positive filters first
3631 has_positive = FALSE;
3632 found = FALSE;
3633 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3634 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3635
3636 if (filter [0] == '+') {
3637 filter = &filter [1];
3638
3639 COVERAGE_DEBUG(fprintf (stderr, " Checking against +%s ...", filter);)
3640
3641 if (strstr (fqn, filter) != NULL) {
3642 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3643 found = TRUE;
3644 } else
3645 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3646
3647 has_positive = TRUE;
3648 }
3649 }
3650
3651 if (has_positive && !found) {
3652 COVERAGE_DEBUG(fprintf (stderr, " Positive match was not found\n");)
3653
3654 mono_os_mutex_lock (&coverage_mutex);
3655 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3656 mono_os_mutex_unlock (&coverage_mutex);
3657 g_free (fqn);
3658 g_free (classname);
3659
3660 return FALSE;
3661 }
3662
3663 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3664 // FIXME: Is substring search sufficient?
3665 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3666 if (filter [0] == '+')
3667 continue;
3668
3669 // Skip '-'
3670 filter = &filter [1];
3671 COVERAGE_DEBUG(fprintf (stderr, " Checking against -%s ...", filter);)
3672
3673 if (strstr (fqn, filter) != NULL) {
3674 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3675
3676 mono_os_mutex_lock (&coverage_mutex);
3677 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3678 mono_os_mutex_unlock (&coverage_mutex);
3679 g_free (fqn);
3680 g_free (classname);
3681
3682 return FALSE;
3683 } else
3684 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3685
3686 }
3687
3688 g_free (fqn);
3689 g_free (classname);
3690 }
3691
3692 COVERAGE_DEBUG(fprintf (stderr, " Handling coverage for %s\n", mono_method_get_name (method));)
3693 header = mono_method_get_header (method);
3694
3695 mono_method_header_get_code (header, &code_size, NULL);
3696
3697 assembly = mono_image_get_assembly (image);
3698
3699 mono_os_mutex_lock (&coverage_mutex);
3700 mono_conc_hashtable_insert (coverage_methods, method, method);
3701 mono_conc_hashtable_insert (coverage_assemblies, assembly, assembly);
3702 mono_os_mutex_unlock (&coverage_mutex);
3703
3704 image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3705
3706 if (image_methods == NULL) {
3707 image_methods = (MonoLockFreeQueue *)g_malloc (sizeof (MonoLockFreeQueue));
3708 mono_lock_free_queue_init (image_methods);
3709 mono_os_mutex_lock (&coverage_mutex);
3710 mono_conc_hashtable_insert (image_to_methods, image, image_methods);
3711 mono_os_mutex_unlock (&coverage_mutex);
3712 }
3713
3714 node = create_method_node (method);
3715 mono_lock_free_queue_enqueue (image_methods, node);
3716
3717 class_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (coverage_classes, klass);
3718
3719 if (class_methods == NULL) {
3720 class_methods = (MonoLockFreeQueue *)g_malloc (sizeof (MonoLockFreeQueue));
3721 mono_lock_free_queue_init (class_methods);
3722 mono_os_mutex_lock (&coverage_mutex);
3723 mono_conc_hashtable_insert (coverage_classes, klass, class_methods);
3724 mono_os_mutex_unlock (&coverage_mutex);
3725 }
3726
3727 node = create_method_node (method);
3728 mono_lock_free_queue_enqueue (class_methods, node);
3729
3730 return TRUE;
3731 }
3732
3733 #define LINE_BUFFER_SIZE 4096
3734 /* Max file limit of 128KB */
3735 #define MAX_FILE_SIZE 128 * 1024
3736 static char *
3737 get_file_content (FILE *stream)
3738 {
3739 char *buffer;
3740 ssize_t bytes_read;
3741 long filesize;
3742 int res, offset = 0;
3743
3744 res = fseek (stream, 0, SEEK_END);
3745 if (res < 0)
3746 return NULL;
3747
3748 filesize = ftell (stream);
3749 if (filesize < 0)
3750 return NULL;
3751
3752 res = fseek (stream, 0, SEEK_SET);
3753 if (res < 0)
3754 return NULL;
3755
3756 if (filesize > MAX_FILE_SIZE)
3757 return NULL;
3758
3759 buffer = (char *)g_malloc ((filesize + 1) * sizeof (char));
3760 while ((bytes_read = fread (buffer + offset, 1, LINE_BUFFER_SIZE, stream)) > 0)
3761 offset += bytes_read;
3762
3763 /* NULL terminate our buffer */
3764 buffer[filesize] = '\0';
3765 return buffer;
3766 }
3767
3768 static char *
3769 get_next_line (char *contents, char **next_start)
3770 {
3771 char *p = contents;
3772
3773 if (p == NULL || *p == '\0') {
3774 *next_start = NULL;
3775 return NULL;
3776 }
3777
3778 while (*p != '\n' && *p != '\0')
3779 p++;
3780
3781 if (*p == '\n') {
3782 *p = '\0';
3783 *next_start = p + 1;
3784 } else
3785 *next_start = NULL;
3786
3787 return contents;
3788 }
3789
3790 static void
3791 init_suppressed_assemblies (void)
3792 {
3793 char *content;
3794 char *line;
3795 FILE *sa_file;
3796
3797 suppressed_assemblies = mono_conc_hashtable_new (g_str_hash, g_str_equal);
3798 sa_file = fopen (SUPPRESSION_DIR "/mono-profiler-log.suppression", "r");
3799 if (sa_file == NULL)
3800 return;
3801
3802 /* Don't need to free @content as it is referred to by the lines stored in @suppressed_assemblies */
3803 content = get_file_content (sa_file);
3804 if (content == NULL) {
3805 g_error ("mono-profiler-log.suppression is greater than 128kb - aborting\n");
3806 }
3807
3808 while ((line = get_next_line (content, &content))) {
3809 line = g_strchomp (g_strchug (line));
3810 /* No locking needed as we're doing initialization */
3811 mono_conc_hashtable_insert (suppressed_assemblies, line, line);
3812 }
3813
3814 fclose (sa_file);
3815 }
3816
3817 #endif /* DISABLE_HELPER_THREAD */
3818
3819 static void
3820 coverage_init (MonoProfiler *prof)
3821 {
3822 #ifndef DISABLE_HELPER_THREAD
3823 assert (!coverage_initialized);
3824
3825 COVERAGE_DEBUG(fprintf (stderr, "Coverage initialized\n");)
3826
3827 mono_os_mutex_init (&coverage_mutex);
3828 coverage_methods = mono_conc_hashtable_new (NULL, NULL);
3829 coverage_assemblies = mono_conc_hashtable_new (NULL, NULL);
3830 coverage_classes = mono_conc_hashtable_new (NULL, NULL);
3831 filtered_classes = mono_conc_hashtable_new (NULL, NULL);
3832 entered_methods = mono_conc_hashtable_new (NULL, NULL);
3833 image_to_methods = mono_conc_hashtable_new (NULL, NULL);
3834 init_suppressed_assemblies ();
3835
3836 coverage_initialized = TRUE;
3837 #endif /* DISABLE_HELPER_THREAD */
3838 }
3839
3840 static void
3841 log_shutdown (MonoProfiler *prof)
3842 {
3843 void *res;
3844
3845 in_shutdown = 1;
3846 #ifndef DISABLE_HELPER_THREAD
3847 counters_and_perfcounters_sample (prof);
3848
3849 dump_coverage (prof);
3850
3851 if (prof->command_port) {
3852 char c = 1;
3853 ign_res (write (prof->pipes [1], &c, 1));
3854 pthread_join (prof->helper_thread, &res);
3855 }
3856 #endif
3857 #if USE_PERF_EVENTS
3858 if (perf_data) {
3859 int i;
3860 for (i = 0; i < num_perf; ++i)
3861 read_perf_mmap (prof, i);
3862 }
3863 #endif
3864
3865 g_ptr_array_free (prof->sorted_sample_events, TRUE);
3866
3867 if (TLS_GET (LogBuffer, tlsbuffer))
3868 send_buffer (prof, TLS_GET (GPtrArray, tlsmethodlist), TLS_GET (LogBuffer, tlsbuffer));
3869
3870 TLS_SET (tlsbuffer, NULL);
3871 TLS_SET (tlsmethodlist, NULL);
3872
3873 InterlockedWrite (&prof->run_writer_thread, 0);
3874 pthread_join (prof->writer_thread, &res);
3875
3876 #if defined (HAVE_SYS_ZLIB)
3877 if (prof->gzfile)
3878 gzclose (prof->gzfile);
3879 #endif
3880 if (prof->pipe_output)
3881 pclose (prof->file);
3882 else
3883 fclose (prof->file);
3884
3885 mono_conc_hashtable_destroy (prof->method_table);
3886 mono_os_mutex_destroy (&prof->method_table_mutex);
3887
3888 if (coverage_initialized) {
3889 mono_conc_hashtable_destroy (coverage_methods);
3890 mono_conc_hashtable_destroy (coverage_assemblies);
3891 mono_conc_hashtable_destroy (coverage_classes);
3892 mono_conc_hashtable_destroy (filtered_classes);
3893
3894 mono_conc_hashtable_destroy (entered_methods);
3895 mono_conc_hashtable_destroy (image_to_methods);
3896 mono_conc_hashtable_destroy (suppressed_assemblies);
3897 mono_os_mutex_destroy (&coverage_mutex);
3898 }
3899
3900 free (prof);
3901 }
3902
3903 static char*
3904 new_filename (const char* filename)
3905 {
3906 time_t t = time (NULL);
3907 int pid = process_id ();
3908 char pid_buf [16];
3909 char time_buf [16];
3910 char *res, *d;
3911 const char *p;
3912 int count_dates = 0;
3913 int count_pids = 0;
3914 int s_date, s_pid;
3915 struct tm *ts;
3916 for (p = filename; *p; p++) {
3917 if (*p != '%')
3918 continue;
3919 p++;
3920 if (*p == 't')
3921 count_dates++;
3922 else if (*p == 'p')
3923 count_pids++;
3924 else if (*p == 0)
3925 break;
3926 }
3927 if (!count_dates && !count_pids)
3928 return pstrdup (filename);
3929 snprintf (pid_buf, sizeof (pid_buf), "%d", pid);
3930 ts = gmtime (&t);
3931 snprintf (time_buf, sizeof (time_buf), "%d%02d%02d%02d%02d%02d",
3932 1900 + ts->tm_year, 1 + ts->tm_mon, ts->tm_mday, ts->tm_hour, ts->tm_min, ts->tm_sec);
3933 s_date = strlen (time_buf);
3934 s_pid = strlen (pid_buf);
3935 d = res = (char *)malloc (strlen (filename) + s_date * count_dates + s_pid * count_pids);
3936 for (p = filename; *p; p++) {
3937 if (*p != '%') {
3938 *d++ = *p;
3939 continue;
3940 }
3941 p++;
3942 if (*p == 't') {
3943 strcpy (d, time_buf);
3944 d += s_date;
3945 continue;
3946 } else if (*p == 'p') {
3947 strcpy (d, pid_buf);
3948 d += s_pid;
3949 continue;
3950 } else if (*p == '%') {
3951 *d++ = '%';
3952 continue;
3953 } else if (*p == 0)
3954 break;
3955 *d++ = '%';
3956 *d++ = *p;
3957 }
3958 *d = 0;
3959 return res;
3960 }
3961
3962 //this is exposed by the JIT, but it's not meant to be a supported API for now.
3963 extern void mono_threads_attach_tools_thread (void);
3964
3965 #ifndef DISABLE_HELPER_THREAD
3966
3967 static void*
3968 helper_thread (void* arg)
3969 {
3970 MonoProfiler* prof = (MonoProfiler *)arg;
3971 int command_socket;
3972 int len;
3973 char buf [64];
3974 MonoThread *thread = NULL;
3975
3976 mono_threads_attach_tools_thread ();
3977 //fprintf (stderr, "Server listening\n");
3978 command_socket = -1;
3979 while (1) {
3980 fd_set rfds;
3981 struct timeval tv;
3982 int max_fd = -1;
3983 FD_ZERO (&rfds);
3984 FD_SET (prof->server_socket, &rfds);
3985 max_fd = prof->server_socket;
3986 FD_SET (prof->pipes [0], &rfds);
3987 if (max_fd < prof->pipes [0])
3988 max_fd = prof->pipes [0];
3989 if (command_socket >= 0) {
3990 FD_SET (command_socket, &rfds);
3991 if (max_fd < command_socket)
3992 max_fd = command_socket;
3993 }
3994 #if USE_PERF_EVENTS
3995 if (perf_data) {
3996 int i;
3997 for ( i = 0; i < num_perf; ++i) {
3998 if (perf_data [i].perf_fd < 0)
3999 continue;
4000 FD_SET (perf_data [i].perf_fd, &rfds);
4001 if (max_fd < perf_data [i].perf_fd)
4002 max_fd = perf_data [i].perf_fd;
4003 }
4004 }
4005 #endif
4006
4007 counters_and_perfcounters_sample (prof);
4008
4009 tv.tv_sec = 1;
4010 tv.tv_usec = 0;
4011 len = select (max_fd + 1, &rfds, NULL, NULL, &tv);
4012
4013 if (len < 0) {
4014 if (errno == EINTR)
4015 continue;
4016
4017 g_warning ("Error in proflog server: %s", strerror (errno));
4018 return NULL;
4019 }
4020
4021 if (FD_ISSET (prof->pipes [0], &rfds)) {
4022 char c;
4023 int r = read (prof->pipes [0], &c, 1);
4024 if (r == 1 && c == 0) {
4025 StatBuffer *sbufbase = prof->stat_buffers;
4026 StatBuffer *sbuf;
4027 if (!sbufbase->next)
4028 continue;
4029 sbuf = sbufbase->next->next;
4030 sbufbase->next->next = NULL;
4031 if (do_debug)
4032 fprintf (stderr, "stat buffer dump\n");
4033 if (sbuf) {
4034 dump_sample_hits (prof, sbuf);
4035 free_buffer (sbuf, sbuf->size);
4036 safe_send (prof, ensure_logbuf (0));
4037 }
4038 continue;
4039 }
4040 /* time to shut down */
4041 dump_sample_hits (prof, prof->stat_buffers);
4042 if (thread)
4043 mono_thread_detach (thread);
4044 if (do_debug)
4045 fprintf (stderr, "helper shutdown\n");
4046 #if USE_PERF_EVENTS
4047 if (perf_data) {
4048 int i;
4049 for ( i = 0; i < num_perf; ++i) {
4050 if (perf_data [i].perf_fd < 0)
4051 continue;
4052 if (FD_ISSET (perf_data [i].perf_fd, &rfds))
4053 read_perf_mmap (prof, i);
4054 }
4055 }
4056 #endif
4057 safe_send (prof, ensure_logbuf (0));
4058 return NULL;
4059 }
4060 #if USE_PERF_EVENTS
4061 if (perf_data) {
4062 int i;
4063 for ( i = 0; i < num_perf; ++i) {
4064 if (perf_data [i].perf_fd < 0)
4065 continue;
4066 if (FD_ISSET (perf_data [i].perf_fd, &rfds)) {
4067 read_perf_mmap (prof, i);
4068 safe_send (prof, ensure_logbuf (0));
4069 }
4070 }
4071 }
4072 #endif
4073 if (command_socket >= 0 && FD_ISSET (command_socket, &rfds)) {
4074 len = read (command_socket, buf, sizeof (buf) - 1);
4075 if (len < 0)
4076 continue;
4077 if (len == 0) {
4078 close (command_socket);
4079 command_socket = -1;
4080 continue;
4081 }
4082 buf [len] = 0;
4083 if (strcmp (buf, "heapshot\n") == 0) {
4084 heapshot_requested = 1;
4085 //fprintf (stderr, "perform heapshot\n");
4086 if (InterlockedRead (&runtime_inited) && !thread) {
4087 thread = mono_thread_attach (mono_get_root_domain ());
4088 /*fprintf (stderr, "attached\n");*/
4089 }
4090 if (thread) {
4091 process_requests (prof);
4092 mono_thread_detach (thread);
4093 thread = NULL;
4094 }
4095 }
4096 continue;
4097 }
4098 if (!FD_ISSET (prof->server_socket, &rfds)) {
4099 continue;
4100 }
4101 command_socket = accept (prof->server_socket, NULL, NULL);
4102 if (command_socket < 0)
4103 continue;
4104 //fprintf (stderr, "Accepted connection\n");
4105 }
4106 return NULL;
4107 }
4108
4109 static int
4110 start_helper_thread (MonoProfiler* prof)
4111 {
4112 struct sockaddr_in server_address;
4113 int r;
4114 socklen_t slen;
4115 if (pipe (prof->pipes) < 0) {
4116 fprintf (stderr, "Cannot create pipe\n");
4117 return 0;
4118 }
4119 prof->server_socket = socket (PF_INET, SOCK_STREAM, 0);
4120 if (prof->server_socket < 0) {
4121 fprintf (stderr, "Cannot create server socket\n");
4122 return 0;
4123 }
4124 memset (&server_address, 0, sizeof (server_address));
4125 server_address.sin_family = AF_INET;
4126 server_address.sin_addr.s_addr = INADDR_ANY;
4127 server_address.sin_port = htons (prof->command_port);
4128 if (bind (prof->server_socket, (struct sockaddr *) &server_address, sizeof (server_address)) < 0) {
4129 fprintf (stderr, "Cannot bind server socket, port: %d: %s\n", prof->command_port, strerror (errno));
4130 close (prof->server_socket);
4131 return 0;
4132 }
4133 if (listen (prof->server_socket, 1) < 0) {
4134 fprintf (stderr, "Cannot listen server socket\n");
4135 close (prof->server_socket);
4136 return 0;
4137 }
4138 slen = sizeof (server_address);
4139 if (getsockname (prof->server_socket, (struct sockaddr *)&server_address, &slen) == 0) {
4140 prof->command_port = ntohs (server_address.sin_port);
4141 /*fprintf (stderr, "Assigned server port: %d\n", prof->command_port);*/
4142 }
4143
4144 r = pthread_create (&prof->helper_thread, NULL, helper_thread, prof);
4145 if (r) {
4146 close (prof->server_socket);
4147 return 0;
4148 }
4149 return 1;
4150 }
4151 #endif
4152
4153 static void *
4154 writer_thread (void *arg)
4155 {
4156 MonoProfiler *prof = (MonoProfiler *)arg;
4157
4158 mono_threads_attach_tools_thread ();
4159
4160 dump_header (prof);
4161
4162 while (InterlockedRead (&prof->run_writer_thread)) {
4163 WriterQueueEntry *entry;
4164
4165 while ((entry = (WriterQueueEntry *) mono_lock_free_queue_dequeue (&prof->writer_queue))) {
4166 LogBuffer *method_buffer = NULL;
4167 gboolean new_methods = FALSE;
4168
4169 if (entry->methods->len)
4170 method_buffer = create_buffer ();
4171
4172 /*
4173 * Encode the method events in a temporary log buffer that we
4174 * flush to disk before the main buffer, ensuring that all
4175 * methods have metadata emitted before they're referenced.
4176 */
4177 for (guint i = 0; i < entry->methods->len; i++) {
4178 MethodInfo *info = (MethodInfo *)g_ptr_array_index (entry->methods, i);
4179
4180 if (mono_conc_hashtable_lookup (prof->method_table, info->method))
4181 continue;
4182
4183 new_methods = TRUE;
4184
4185 /*
4186 * Other threads use this hash table to get a general
4187 * idea of whether a method has already been emitted to
4188 * the stream. Due to the way we add to this table, it
4189 * can easily happen that multiple threads queue up the
4190 * same methods, but that's OK since eventually all
4191 * methods will be in this table and the thread-local
4192 * method lists will just be empty for the rest of the
4193 * app's lifetime.
4194 */
4195 mono_os_mutex_lock (&prof->method_table_mutex);
4196 mono_conc_hashtable_insert (prof->method_table, info->method, info->method);
4197 mono_os_mutex_unlock (&prof->method_table_mutex);
4198
4199 char *name = mono_method_full_name (info->method, 1);
4200 int nlen = strlen (name) + 1;
4201 void *cstart = info->ji ? mono_jit_info_get_code_start (info->ji) : NULL;
4202 int csize = info->ji ? mono_jit_info_get_code_size (info->ji) : 0;
4203
4204 method_buffer = ensure_logbuf_inner (method_buffer,
4205 EVENT_SIZE /* event */ +
4206 LEB128_SIZE /* time */ +
4207 LEB128_SIZE /* method */ +
4208 LEB128_SIZE /* start */ +
4209 LEB128_SIZE /* size */ +
4210 nlen /* name */
4211 );
4212
4213 emit_byte (method_buffer, TYPE_JIT | TYPE_METHOD);
4214 emit_time (method_buffer, info->time);
4215 emit_method_inner (method_buffer, info->method);
4216 emit_ptr (method_buffer, cstart);
4217 emit_value (method_buffer, csize);
4218
4219 memcpy (method_buffer->data, name, nlen);
4220 method_buffer->data += nlen;
4221
4222 mono_free (name);
4223 free (info);
4224 }
4225
4226 g_ptr_array_free (entry->methods, TRUE);
4227
4228 if (new_methods)
4229 dump_buffer (prof, method_buffer);
4230 else if (method_buffer)
4231 free_buffer (method_buffer, method_buffer->size);
4232
4233 dump_buffer (prof, entry->buffer);
4234
4235 free (entry);
4236 }
4237 }
4238
4239 return NULL;
4240 }
4241
4242 static int
4243 start_writer_thread (MonoProfiler* prof)
4244 {
4245 InterlockedWrite (&prof->run_writer_thread, 1);
4246
4247 return !pthread_create (&prof->writer_thread, NULL, writer_thread, prof);
4248 }
4249
4250 static void
4251 runtime_initialized (MonoProfiler *profiler)
4252 {
4253 #ifndef DISABLE_HELPER_THREAD
4254 if (hs_mode_ondemand || need_helper_thread) {
4255 if (!start_helper_thread (profiler))
4256 profiler->command_port = 0;
4257 }
4258 #endif
4259
4260 start_writer_thread (profiler);
4261
4262 InterlockedWrite (&runtime_inited, 1);
4263 #ifndef DISABLE_HELPER_THREAD
4264 counters_init (profiler);
4265 counters_sample (profiler, 0);
4266 #endif
4267 /* ensure the main thread data and startup are available soon */
4268 safe_send (profiler, ensure_logbuf (0));
4269 }
4270
4271 static MonoProfiler*
4272 create_profiler (const char *filename, GPtrArray *filters)
4273 {
4274 MonoProfiler *prof;
4275 char *nf;
4276 int force_delete = 0;
4277 prof = (MonoProfiler *)calloc (1, sizeof (MonoProfiler));
4278
4279 prof->command_port = command_port;
4280 if (filename && *filename == '-') {
4281 force_delete = 1;
4282 filename++;
4283 }
4284 if (!filename) {
4285 if (do_report)
4286 filename = "|mprof-report -";
4287 else
4288 filename = "output.mlpd";
4289 nf = (char*)filename;
4290 } else {
4291 nf = new_filename (filename);
4292 if (do_report) {
4293 int s = strlen (nf) + 32;
4294 char *p = (char *)malloc (s);
4295 snprintf (p, s, "|mprof-report '--out=%s' -", nf);
4296 free (nf);
4297 nf = p;
4298 }
4299 }
4300 if (*nf == '|') {
4301 prof->file = popen (nf + 1, "w");
4302 prof->pipe_output = 1;
4303 } else if (*nf == '#') {
4304 int fd = strtol (nf + 1, NULL, 10);
4305 prof->file = fdopen (fd, "a");
4306 } else {
4307 if (force_delete)
4308 unlink (nf);
4309 prof->file = fopen (nf, "wb");
4310 }
4311 if (!prof->file) {
4312 fprintf (stderr, "Cannot create profiler output: %s\n", nf);
4313 exit (1);
4314 }
4315 #if defined (HAVE_SYS_ZLIB)
4316 if (use_zip)
4317 prof->gzfile = gzdopen (fileno (prof->file), "wb");
4318 #endif
4319 #if USE_PERF_EVENTS
4320 if (sample_type && !do_mono_sample)
4321 need_helper_thread = setup_perf_event ();
4322 if (!perf_data) {
4323 /* FIXME: warn if different freq or sample type */
4324 do_mono_sample = 1;
4325 }
4326 #endif
4327 if (do_mono_sample) {
4328 prof->stat_buffers = create_stat_buffer ();
4329 need_helper_thread = 1;
4330 }
4331 if (do_counters && !need_helper_thread) {
4332 need_helper_thread = 1;
4333 }
4334
4335 prof->sorted_sample_events = g_ptr_array_sized_new (BUFFER_SIZE / SAMPLE_EVENT_SIZE_IN_SLOTS (0));
4336
4337 #ifdef DISABLE_HELPER_THREAD
4338 if (hs_mode_ondemand)
4339 fprintf (stderr, "Ondemand heapshot unavailable on this arch.\n");
4340
4341 if (do_coverage)
4342 fprintf (stderr, "Coverage unavailable on this arch.\n");
4343
4344 #endif
4345
4346 mono_lock_free_queue_init (&prof->writer_queue);
4347 mono_os_mutex_init (&prof->method_table_mutex);
4348 prof->method_table = mono_conc_hashtable_new (NULL, NULL);
4349
4350 if (do_coverage)
4351 coverage_init (prof);
4352 prof->coverage_filters = filters;
4353
4354 prof->startup_time = current_time ();
4355 return prof;
4356 }
4357
4358 static void
4359 usage (int do_exit)
4360 {
4361 printf ("Log profiler version %d.%d (format: %d)\n", LOG_VERSION_MAJOR, LOG_VERSION_MINOR, LOG_DATA_VERSION);
4362 printf ("Usage: mono --profile=log[:OPTION1[,OPTION2...]] program.exe\n");
4363 printf ("Options:\n");
4364 printf ("\thelp show this usage info\n");
4365 printf ("\t[no]alloc enable/disable recording allocation info\n");
4366 printf ("\t[no]calls enable/disable recording enter/leave method events\n");
4367 printf ("\theapshot[=MODE] record heap shot info (by default at each major collection)\n");
4368 printf ("\t MODE: every XXms milliseconds, every YYgc collections, ondemand\n");
4369 printf ("\tcounters sample counters every 1s\n");
4370 printf ("\tsample[=TYPE] use statistical sampling mode (by default cycles/1000)\n");
4371 printf ("\t TYPE: cycles,instr,cacherefs,cachemiss,branches,branchmiss\n");
4372 printf ("\t TYPE can be followed by /FREQUENCY\n");
4373 printf ("\ttime=fast use a faster (but more inaccurate) timer\n");
4374 printf ("\tmaxframes=NUM collect up to NUM stack frames\n");
4375 printf ("\tcalldepth=NUM ignore method events for call chain depth bigger than NUM\n");
4376 printf ("\toutput=FILENAME write the data to file FILENAME (-FILENAME to overwrite)\n");
4377 printf ("\toutput=|PROGRAM write the data to the stdin of PROGRAM\n");
4378 printf ("\t %%t is subtituted with date and time, %%p with the pid\n");
4379 printf ("\treport create a report instead of writing the raw data to a file\n");
4380 printf ("\tzip compress the output data\n");
4381 printf ("\tport=PORTNUM use PORTNUM for the listening command server\n");
4382 printf ("\tcoverage enable collection of code coverage data\n");
4383 printf ("\tcovfilter=ASSEMBLY add an assembly to the code coverage filters\n");
4384 printf ("\t add a + to include the assembly or a - to exclude it\n");
4385 printf ("\t filter=-mscorlib\n");
4386 printf ("\tcovfilter-file=FILE use FILE to generate the list of assemblies to be filtered\n");
4387 if (do_exit)
4388 exit (1);
4389 }
4390
4391 static const char*
4392 match_option (const char* p, const char *opt, char **rval)
4393 {
4394 int len = strlen (opt);
4395 if (strncmp (p, opt, len) == 0) {
4396 if (rval) {
4397 if (p [len] == '=' && p [len + 1]) {
4398 const char *opt = p + len + 1;
4399 const char *end = strchr (opt, ',');
4400 char *val;
4401 int l;
4402 if (end == NULL) {
4403 l = strlen (opt);
4404 } else {
4405 l = end - opt;
4406 }
4407 val = (char *)malloc (l + 1);
4408 memcpy (val, opt, l);
4409 val [l] = 0;
4410 *rval = val;
4411 return opt + l;
4412 }
4413 if (p [len] == 0 || p [len] == ',') {
4414 *rval = NULL;
4415 return p + len + (p [len] == ',');
4416 }
4417 usage (1);
4418 } else {
4419 if (p [len] == 0)
4420 return p + len;
4421 if (p [len] == ',')
4422 return p + len + 1;
4423 }
4424 }
4425 return p;
4426 }
4427
4428 typedef struct {
4429 const char *name;
4430 int sample_mode;
4431 } SampleMode;
4432
4433 static const SampleMode sample_modes [] = {
4434 {"cycles", SAMPLE_CYCLES},
4435 {"instr", SAMPLE_INSTRUCTIONS},
4436 {"cachemiss", SAMPLE_CACHE_MISSES},
4437 {"cacherefs", SAMPLE_CACHE_REFS},
4438 {"branches", SAMPLE_BRANCHES},
4439 {"branchmiss", SAMPLE_BRANCH_MISSES},
4440 {NULL, 0}
4441 };
4442
4443 static void
4444 set_sample_mode (char* val, int allow_empty)
4445 {
4446 char *end;
4447 char *maybe_freq = NULL;
4448 unsigned int count;
4449 const SampleMode *smode = sample_modes;
4450 #ifndef USE_PERF_EVENTS
4451 do_mono_sample = 1;
4452 #endif
4453 if (allow_empty && !val) {
4454 sample_type = SAMPLE_CYCLES;
4455 sample_freq = 1000;
4456 return;
4457 }
4458 if (strcmp (val, "mono") == 0) {
4459 do_mono_sample = 1;
4460 sample_type = SAMPLE_CYCLES;
4461 free (val);
4462 return;
4463 }
4464 for (smode = sample_modes; smode->name; smode++) {
4465 int l = strlen (smode->name);
4466 if (strncmp (val, smode->name, l) == 0) {
4467 sample_type = smode->sample_mode;
4468 maybe_freq = val + l;
4469 break;
4470 }
4471 }
4472 if (!smode->name)
4473 usage (1);
4474 if (*maybe_freq == '/') {
4475 count = strtoul (maybe_freq + 1, &end, 10);
4476 if (maybe_freq + 1 == end)
4477 usage (1);
4478 sample_freq = count;
4479 } else if (*maybe_freq != 0) {
4480 usage (1);
4481 } else {
4482 sample_freq = 1000;
4483 }
4484 free (val);
4485 }
4486
4487 static void
4488 set_hsmode (char* val, int allow_empty)
4489 {
4490 char *end;
4491 unsigned int count;
4492 if (allow_empty && !val)
4493 return;
4494 if (strcmp (val, "ondemand") == 0) {
4495 hs_mode_ondemand = 1;
4496 free (val);
4497 return;
4498 }
4499 count = strtoul (val, &end, 10);
4500 if (val == end)
4501 usage (1);
4502 if (strcmp (end, "ms") == 0)
4503 hs_mode_ms = count;
4504 else if (strcmp (end, "gc") == 0)
4505 hs_mode_gc = count;
4506 else
4507 usage (1);
4508 free (val);
4509 }
4510
4511 /*
4512 * declaration to silence the compiler: this is the entry point that
4513 * mono will load from the shared library and call.
4514 */
4515 extern void
4516 mono_profiler_startup (const char *desc);
4517
4518 extern void
4519 mono_profiler_startup_log (const char *desc);
4520
4521 /*
4522 * this is the entry point that will be used when the profiler
4523 * is embedded inside the main executable.
4524 */
4525 void
4526 mono_profiler_startup_log (const char *desc)
4527 {
4528 mono_profiler_startup (desc);
4529 }
4530
4531 void
4532 mono_profiler_startup (const char *desc)
4533 {
4534 MonoProfiler *prof;
4535 GPtrArray *filters = NULL;
4536 char *filename = NULL;
4537 const char *p;
4538 const char *opt;
4539 int fast_time = 0;
4540 int calls_enabled = 0;
4541 int allocs_enabled = 0;
4542 int only_counters = 0;
4543 int only_coverage = 0;
4544 int events = MONO_PROFILE_GC|MONO_PROFILE_ALLOCATIONS|
4545 MONO_PROFILE_GC_MOVES|MONO_PROFILE_CLASS_EVENTS|MONO_PROFILE_THREADS|
4546 MONO_PROFILE_ENTER_LEAVE|MONO_PROFILE_JIT_COMPILATION|MONO_PROFILE_EXCEPTIONS|
4547 MONO_PROFILE_MONITOR_EVENTS|MONO_PROFILE_MODULE_EVENTS|MONO_PROFILE_GC_ROOTS|
4548 MONO_PROFILE_INS_COVERAGE|MONO_PROFILE_APPDOMAIN_EVENTS|MONO_PROFILE_CONTEXT_EVENTS|
4549 MONO_PROFILE_ASSEMBLY_EVENTS;
4550
4551 p = desc;
4552 if (strncmp (p, "log", 3))
4553 usage (1);
4554 p += 3;
4555 if (*p == ':')
4556 p++;
4557 for (; *p; p = opt) {
4558 char *val;
4559 if (*p == ',') {
4560 opt = p + 1;
4561 continue;
4562 }
4563 if ((opt = match_option (p, "help", NULL)) != p) {
4564 usage (0);
4565 continue;
4566 }
4567 if ((opt = match_option (p, "calls", NULL)) != p) {
4568 calls_enabled = 1;
4569 continue;
4570 }
4571 if ((opt = match_option (p, "nocalls", NULL)) != p) {
4572 events &= ~MONO_PROFILE_ENTER_LEAVE;
4573 nocalls = 1;
4574 continue;
4575 }
4576 if ((opt = match_option (p, "alloc", NULL)) != p) {
4577 allocs_enabled = 1;
4578 continue;
4579 }
4580 if ((opt = match_option (p, "noalloc", NULL)) != p) {
4581 events &= ~MONO_PROFILE_ALLOCATIONS;
4582 continue;
4583 }
4584 if ((opt = match_option (p, "time", &val)) != p) {
4585 if (strcmp (val, "fast") == 0)
4586 fast_time = 1;
4587 else if (strcmp (val, "null") == 0)
4588 fast_time = 2;
4589 else
4590 usage (1);
4591 free (val);
4592 continue;
4593 }
4594 if ((opt = match_option (p, "report", NULL)) != p) {
4595 do_report = 1;
4596 continue;
4597 }
4598 if ((opt = match_option (p, "debug", NULL)) != p) {
4599 do_debug = 1;
4600 continue;
4601 }
4602 if ((opt = match_option (p, "sampling-real", NULL)) != p) {
4603 sampling_mode = MONO_PROFILER_STAT_MODE_REAL;
4604 continue;
4605 }
4606 if ((opt = match_option (p, "sampling-process", NULL)) != p) {
4607 sampling_mode = MONO_PROFILER_STAT_MODE_PROCESS;
4608 continue;
4609 }
4610 if ((opt = match_option (p, "heapshot", &val)) != p) {
4611 events &= ~MONO_PROFILE_ALLOCATIONS;
4612 events &= ~MONO_PROFILE_ENTER_LEAVE;
4613 nocalls = 1;
4614 do_heap_shot = 1;
4615 set_hsmode (val, 1);
4616 continue;
4617 }
4618 if ((opt = match_option (p, "sample", &val)) != p) {
4619 events &= ~MONO_PROFILE_ALLOCATIONS;
4620 events &= ~MONO_PROFILE_ENTER_LEAVE;
4621 nocalls = 1;
4622 set_sample_mode (val, 1);
4623 continue;
4624 }
4625 if ((opt = match_option (p, "hsmode", &val)) != p) {
4626 fprintf (stderr, "The hsmode profiler option is obsolete, use heapshot=MODE.\n");
4627 set_hsmode (val, 0);
4628 continue;
4629 }
4630 if ((opt = match_option (p, "zip", NULL)) != p) {
4631 use_zip = 1;
4632 continue;
4633 }
4634 if ((opt = match_option (p, "output", &val)) != p) {
4635 filename = val;
4636 continue;
4637 }
4638 if ((opt = match_option (p, "port", &val)) != p) {
4639 char *end;
4640 command_port = strtoul (val, &end, 10);
4641 free (val);
4642 continue;
4643 }
4644 if ((opt = match_option (p, "maxframes", &val)) != p) {
4645 char *end;
4646 num_frames = strtoul (val, &end, 10);
4647 if (num_frames > MAX_FRAMES)
4648 num_frames = MAX_FRAMES;
4649 free (val);
4650 notraces = num_frames == 0;
4651 continue;
4652 }
4653 if ((opt = match_option (p, "calldepth", &val)) != p) {
4654 char *end;
4655 max_call_depth = strtoul (val, &end, 10);
4656 free (val);
4657 continue;
4658 }
4659 if ((opt = match_option (p, "counters", NULL)) != p) {
4660 do_counters = 1;
4661 continue;
4662 }
4663 if ((opt = match_option (p, "countersonly", NULL)) != p) {
4664 only_counters = 1;
4665 continue;
4666 }
4667 if ((opt = match_option (p, "coverage", NULL)) != p) {
4668 do_coverage = 1;
4669 events |= MONO_PROFILE_ENTER_LEAVE;
4670 debug_coverage = (g_getenv ("MONO_PROFILER_DEBUG_COVERAGE") != NULL);
4671 continue;
4672 }
4673 if ((opt = match_option (p, "onlycoverage", NULL)) != p) {
4674 only_coverage = 1;
4675 continue;
4676 }
4677 if ((opt = match_option (p, "covfilter-file", &val)) != p) {
4678 FILE *filter_file;
4679 char *line, *content;
4680
4681 if (filters == NULL)
4682 filters = g_ptr_array_new ();
4683
4684 filter_file = fopen (val, "r");
4685 if (filter_file == NULL) {
4686 fprintf (stderr, "Unable to open %s\n", val);
4687 exit (0);
4688 }
4689
4690 /* Don't need to free content as it is referred to by the lines stored in @filters */
4691 content = get_file_content (filter_file);
4692 if (content == NULL)
4693 fprintf (stderr, "WARNING: %s is greater than 128kb - ignoring\n", val);
4694
4695 while ((line = get_next_line (content, &content)))
4696 g_ptr_array_add (filters, g_strchug (g_strchomp (line)));
4697
4698 fclose (filter_file);
4699 continue;
4700 }
4701 if ((opt = match_option (p, "covfilter", &val)) != p) {
4702 if (filters == NULL)
4703 filters = g_ptr_array_new ();
4704
4705 g_ptr_array_add (filters, val);
4706 continue;
4707 }
4708 if (opt == p) {
4709 usage (0);
4710 exit (0);
4711 }
4712 }
4713 if (calls_enabled) {
4714 events |= MONO_PROFILE_ENTER_LEAVE;
4715 nocalls = 0;
4716 }
4717 if (allocs_enabled)
4718 events |= MONO_PROFILE_ALLOCATIONS;
4719 if (only_counters)
4720 events = 0;
4721 if (only_coverage)
4722 events = MONO_PROFILE_ENTER_LEAVE | MONO_PROFILE_INS_COVERAGE;
4723
4724 utils_init (fast_time);
4725
4726 prof = create_profiler (filename, filters);
4727 if (!prof)
4728 return;
4729 init_thread ();
4730
4731 mono_profiler_install (prof, log_shutdown);
4732 mono_profiler_install_gc (gc_event, gc_resize);
4733 mono_profiler_install_allocation (gc_alloc);
4734 mono_profiler_install_gc_moves (gc_moves);
4735 mono_profiler_install_gc_roots (gc_handle, gc_roots);
4736 mono_profiler_install_appdomain (NULL, domain_loaded, NULL, domain_unloaded);
4737 mono_profiler_install_appdomain_name (domain_name);
4738 mono_profiler_install_context (context_loaded, context_unloaded);
4739 mono_profiler_install_class (NULL, class_loaded, NULL, class_unloaded);
4740 mono_profiler_install_module (NULL, image_loaded, NULL, image_unloaded);
4741 mono_profiler_install_assembly (NULL, assembly_loaded, assembly_unloaded, NULL);
4742 mono_profiler_install_thread (thread_start, thread_end);
4743 mono_profiler_install_thread_name (thread_name);
4744 mono_profiler_install_enter_leave (method_enter, method_leave);
4745 mono_profiler_install_jit_end (method_jitted);
4746 mono_profiler_install_code_buffer_new (code_buffer_new);
4747 mono_profiler_install_exception (throw_exc, method_exc_leave, clause_exc);
4748 mono_profiler_install_monitor (monitor_event);
4749 mono_profiler_install_runtime_initialized (runtime_initialized);
4750 if (do_coverage)
4751 mono_profiler_install_coverage_filter (coverage_filter);
4752
4753 if (do_mono_sample && sample_type == SAMPLE_CYCLES && !only_counters) {
4754 events |= MONO_PROFILE_STATISTICAL;
4755 mono_profiler_set_statistical_mode (sampling_mode, 1000000 / sample_freq);
4756 mono_profiler_install_statistical (mono_sample_hit);
4757 }
4758
4759 mono_profiler_set_events ((MonoProfileFlags)events);
4760
4761 TLS_INIT (tlsbuffer);
4762 TLS_INIT (tlsmethodlist);
4763 }
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