mono/profiler/mono-profiler-aot.c

   1 /*
   2  * mono-profiler-aot.c: Ahead of Time Compiler Profiler for Mono.
   3  *
   4  *
   5  * Copyright 2008-2009 Novell, Inc (http://www.novell.com)
   6  *
   7  * This profiler collects profiling information usable by the Mono AOT compiler
   8  * to generate better code. It saves the information into files under ~/.mono.
   9  * The AOT compiler can load these files during compilation.
  10  * Currently, only the order in which methods were compiled is saved,
  11  * allowing more efficient function ordering in the AOT files.
  12  */
  13
  14 #include <config.h>
  15 #include <mono/metadata/profiler.h>
  16 #include <mono/metadata/tokentype.h>
  17 #include <mono/metadata/tabledefs.h>
  18 #include <mono/metadata/debug-helpers.h>
  19 #include <mono/metadata/assembly.h>
  20 #include <string.h>
  21 #include <errno.h>
  22 #include <stdlib.h>
  23 #include <glib.h>
  24 #include <sys/stat.h>
  25
  26 struct _MonoProfiler {
  27         GHashTable *images;
  28 };
  29
  30 typedef struct {
  31         GList *methods;
  32 } PerImageData;
  33
  34 typedef struct ForeachData {
  35         MonoProfiler *prof;
  36         FILE *outfile;
  37         MonoImage *image;
  38         MonoMethod *method;
  39 } ForeachData;
  40
  41 static void
  42 foreach_method (gpointer data, gpointer user_data)
  43 {
  44         ForeachData *udata = (ForeachData*)user_data;
  45         MonoMethod *method = (MonoMethod*)data;
  46         char *name;
  47
  48         if (!mono_method_get_token (method) || mono_class_get_image (mono_method_get_class (method)) != udata->image)
  49                 return;
  50
  51         name = mono_method_full_name (method, TRUE);
  52         fprintf (udata->outfile, "%s\n", name);
  53         g_free (name);
  54 }
  55
  56 static void
  57 output_image (gpointer key, gpointer value, gpointer user_data)
  58 {
  59         MonoImage *image = (MonoImage*)key;
  60         PerImageData *image_data = (PerImageData*)value;
  61         MonoProfiler *prof = (MonoProfiler*)user_data;
  62         char *tmp, *outfile_name;
  63         FILE *outfile;
  64         int i, err;
  65         ForeachData data;
  66
  67         tmp = g_strdup_printf ("%s/.mono/aot-profile-data", g_get_home_dir ());
  68
  69         if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
  70 #ifdef HOST_WIN32
  71                 err = mkdir (tmp);
  72 #else
  73                 err = mkdir (tmp, 0777);
  74 #endif
  75                 if (err) {
  76                         fprintf (stderr, "mono-profiler-aot: Unable to create output directory '%s': %s\n", tmp, g_strerror (errno));
  77                         exit (1);
  78                 }
  79         }
  80
  81         i = 0;
  82         while (TRUE) {
  83                 outfile_name = g_strdup_printf ("%s/%s-%d", tmp, mono_image_get_name (image), i);
  84
  85                 if (!g_file_test (outfile_name, G_FILE_TEST_IS_REGULAR))
  86                         break;
  87
  88                 i ++;
  89         }
  90
  91         printf ("Creating output file: %s\n", outfile_name);
  92
  93         outfile = fopen (outfile_name, "w+");
  94         g_assert (outfile);
  95
  96         fprintf (outfile, "#VER:%d\n", 2);
  97
  98         data.prof = prof;
  99         data.outfile = outfile;
 100         data.image = image;
 101
 102         g_list_foreach (image_data->methods, foreach_method, &data);
 103 }
 104
 105 /* called at the end of the program */
 106 static void
 107 prof_shutdown (MonoProfiler *prof)
 108 {
 109         g_hash_table_foreach (prof->images, output_image, prof);
 110 }
 111
 112 static void
 113 prof_jit_enter (MonoProfiler *prof, MonoMethod *method)
 114 {
 115 }
 116
 117 static void
 118 prof_jit_leave (MonoProfiler *prof, MonoMethod *method, int result)
 119 {
 120         MonoImage *image = mono_class_get_image (mono_method_get_class (method));
 121         PerImageData *data;
 122
 123         data = g_hash_table_lookup (prof->images, image);
 124         if (!data) {
 125                 data = g_new0 (PerImageData, 1);
 126                 g_hash_table_insert (prof->images, image, data);
 127         }
 128
 129         data->methods = g_list_append (data->methods, method);
 130 }
 131
 132 void
 133 mono_profiler_startup (const char *desc);
 134
 135 /* the entry point */
 136 void
 137 mono_profiler_startup (const char *desc)
 138 {
 139         MonoProfiler *prof;
 140
 141         prof = g_new0 (MonoProfiler, 1);
 142         prof->images = g_hash_table_new (NULL, NULL);
 143
 144         mono_profiler_install (prof, prof_shutdown);
 145
 146         mono_profiler_install_jit_compile (prof_jit_enter, prof_jit_leave);
 147
 148         mono_profiler_set_events (MONO_PROFILE_JIT_COMPILATION);
 149 }
 150
 151