mono/metadata/sgen-protocol.c

   1 /*
   2  * Copyright 2001-2003 Ximian, Inc
   3  * Copyright 2003-2010 Novell, Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be
  14  * included in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  21  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #include "sgen-protocol.h"
  26
  27 #ifdef SGEN_BINARY_PROTOCOL
  28
  29 /* If not null, dump binary protocol to this file */
  30 static FILE *binary_protocol_file = NULL;
  31
  32 #define BINARY_PROTOCOL_BUFFER_SIZE     (65536 - 2 * 8)
  33
  34 typedef struct _BinaryProtocolBuffer BinaryProtocolBuffer;
  35 struct _BinaryProtocolBuffer {
  36         BinaryProtocolBuffer *next;
  37         int index;
  38         unsigned char buffer [BINARY_PROTOCOL_BUFFER_SIZE];
  39 };
  40
  41 static BinaryProtocolBuffer *binary_protocol_buffers = NULL;
  42 LOCK_DECLARE (binary_protocol_mutex);
  43
  44 static void
  45 binary_protocol_flush_buffers_rec (BinaryProtocolBuffer *buffer)
  46 {
  47         if (!buffer)
  48                 return;
  49
  50         binary_protocol_flush_buffers_rec (buffer->next);
  51
  52         g_assert (buffer->index > 0);
  53         fwrite (buffer->buffer, 1, buffer->index, binary_protocol_file);
  54
  55         mono_sgen_free_os_memory (buffer, sizeof (BinaryProtocolBuffer));
  56 }
  57
  58 static void
  59 binary_protocol_flush_buffers (void)
  60 {
  61         if (!binary_protocol_file)
  62                 return;
  63
  64         binary_protocol_flush_buffers_rec (binary_protocol_buffers);
  65         binary_protocol_buffers = NULL;
  66 }
  67
  68 static BinaryProtocolBuffer*
  69 binary_protocol_get_buffer (int length)
  70 {
  71         BinaryProtocolBuffer *buffer, *new_buffer;
  72
  73  retry:
  74         buffer = binary_protocol_buffers;
  75         if (buffer && buffer->index + length <= BINARY_PROTOCOL_BUFFER_SIZE)
  76                 return buffer;
  77
  78         new_buffer = mono_sgen_alloc_os_memory (sizeof (BinaryProtocolBuffer), TRUE);
  79         new_buffer->next = buffer;
  80         new_buffer->index = 0;
  81
  82         if (InterlockedCompareExchangePointer ((void**)&binary_protocol_buffers, new_buffer, buffer) != buffer) {
  83                 mono_sgen_free_os_memory (new_buffer, sizeof (BinaryProtocolBuffer));
  84                 goto retry;
  85         }
  86
  87         return new_buffer;
  88 }
  89
  90
  91 static void
  92 protocol_entry (unsigned char type, gpointer data, int size)
  93 {
  94         int index;
  95         BinaryProtocolBuffer *buffer;
  96
  97         if (!binary_protocol_file)
  98                 return;
  99
 100  retry:
 101         buffer = binary_protocol_get_buffer (size + 1);
 102  retry_same_buffer:
 103         index = buffer->index;
 104         if (index + 1 + size > BINARY_PROTOCOL_BUFFER_SIZE)
 105                 goto retry;
 106
 107         if (InterlockedCompareExchange (&buffer->index, index + 1 + size, index) != index)
 108                 goto retry_same_buffer;
 109
 110         buffer->buffer [index++] = type;
 111         memcpy (buffer->buffer + index, data, size);
 112         index += size;
 113
 114         g_assert (index <= BINARY_PROTOCOL_BUFFER_SIZE);
 115 }
 116
 117 void
 118 binary_protocol_collection (int generation)
 119 {
 120         SGenProtocolCollection entry = { generation };
 121         binary_protocol_flush_buffers ();
 122         protocol_entry (SGEN_PROTOCOL_COLLECTION, &entry, sizeof (SGenProtocolCollection));
 123 }
 124
 125 void
 126 binary_protocol_alloc (gpointer obj, gpointer vtable, int size)
 127 {
 128         SGenProtocolAlloc entry = { obj, vtable, size };
 129         protocol_entry (SGEN_PROTOCOL_ALLOC, &entry, sizeof (SGenProtocolAlloc));
 130 }
 131
 132 void
 133 binary_protocol_alloc_pinned (gpointer obj, gpointer vtable, int size)
 134 {
 135         SGenProtocolAlloc entry = { obj, vtable, size };
 136         protocol_entry (SGEN_PROTOCOL_ALLOC_PINNED, &entry, sizeof (SGenProtocolAlloc));
 137 }
 138
 139 void
 140 binary_protocol_alloc_degraded (gpointer obj, gpointer vtable, int size)
 141 {
 142         SGenProtocolAlloc entry = { obj, vtable, size };
 143         protocol_entry (SGEN_PROTOCOL_ALLOC_DEGRADED, &entry, sizeof (SGenProtocolAlloc));
 144 }
 145
 146 void
 147 binary_protocol_copy (gpointer from, gpointer to, gpointer vtable, int size)
 148 {
 149         SGenProtocolCopy entry = { from, to, vtable, size };
 150         protocol_entry (SGEN_PROTOCOL_COPY, &entry, sizeof (SGenProtocolCopy));
 151 }
 152
 153 void
 154 binary_protocol_pin (gpointer obj, gpointer vtable, int size)
 155 {
 156         SGenProtocolPin entry = { obj, vtable, size };
 157         protocol_entry (SGEN_PROTOCOL_PIN, &entry, sizeof (SGenProtocolPin));
 158 }
 159
 160 void
 161 binary_protocol_mark (gpointer obj, gpointer vtable, int size)
 162 {
 163         SGenProtocolMark entry = { obj, vtable, size };
 164         protocol_entry (SGEN_PROTOCOL_MARK, &entry, sizeof (SGenProtocolMark));
 165 }
 166
 167 void
 168 binary_protocol_wbarrier (gpointer ptr, gpointer value, gpointer value_vtable)
 169 {
 170         SGenProtocolWBarrier entry = { ptr, value, value_vtable };
 171         protocol_entry (SGEN_PROTOCOL_WBARRIER, &entry, sizeof (SGenProtocolWBarrier));
 172 }
 173
 174 void
 175 binary_protocol_global_remset (gpointer ptr, gpointer value, gpointer value_vtable)
 176 {
 177         SGenProtocolGlobalRemset entry = { ptr, value, value_vtable };
 178         protocol_entry (SGEN_PROTOCOL_GLOBAL_REMSET, &entry, sizeof (SGenProtocolGlobalRemset));
 179 }
 180
 181 void
 182 binary_protocol_ptr_update (gpointer ptr, gpointer old_value, gpointer new_value, gpointer vtable, int size)
 183 {
 184         SGenProtocolPtrUpdate entry = { ptr, old_value, new_value, vtable, size };
 185         protocol_entry (SGEN_PROTOCOL_PTR_UPDATE, &entry, sizeof (SGenProtocolPtrUpdate));
 186 }
 187
 188 void
 189 binary_protocol_cleanup (gpointer ptr, gpointer vtable, int size)
 190 {
 191         SGenProtocolCleanup entry = { ptr, vtable, size };
 192         protocol_entry (SGEN_PROTOCOL_CLEANUP, &entry, sizeof (SGenProtocolCleanup));
 193 }
 194
 195 void
 196 binary_protocol_empty (gpointer start, int size)
 197 {
 198         SGenProtocolEmpty entry = { start, size };
 199         protocol_entry (SGEN_PROTOCOL_EMPTY, &entry, sizeof (SGenProtocolEmpty));
 200 }
 201
 202 void
 203 binary_protocol_thread_restart (gpointer thread)
 204 {
 205         SGenProtocolThreadRestart entry = { thread };
 206         protocol_entry (SGEN_PROTOCOL_THREAD_RESTART, &entry, sizeof (SGenProtocolThreadRestart));
 207
 208 }
 209
 210 void
 211 binary_protocol_thread_register (gpointer thread)
 212 {
 213         SGenProtocolThreadRegister entry = { thread };
 214         protocol_entry (SGEN_PROTOCOL_THREAD_REGISTER, &entry, sizeof (SGenProtocolThreadRegister));
 215
 216 }
 217
 218 void
 219 binary_protocol_thread_unregister (gpointer thread)
 220 {
 221         SGenProtocolThreadUnregister entry = { thread };
 222         protocol_entry (SGEN_PROTOCOL_THREAD_UNREGISTER, &entry, sizeof (SGenProtocolThreadUnregister));
 223
 224 }
 225
 226 void
 227 binary_protocol_missing_remset (gpointer obj, gpointer obj_vtable, int offset, gpointer value, gpointer value_vtable, int value_pinned)
 228 {
 229         SGenProtocolMissingRemset entry = { obj, obj_vtable, offset, value, value_vtable, value_pinned };
 230         protocol_entry (SGEN_PROTOCOL_MISSING_REMSET, &entry, sizeof (SGenProtocolMissingRemset));
 231
 232 }
 233
 234 #endif