2 * mono-profiler-aot.c: Ahead of Time Compiler Profiler for Mono.
5 * Copyright 2008-2009 Novell, Inc (http://www.novell.com)
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 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
19 #include <mono/metadata/profiler.h>
20 #include <mono/metadata/tokentype.h>
21 #include <mono/metadata/tabledefs.h>
22 #include <mono/metadata/debug-helpers.h>
23 #include <mono/metadata/assembly.h>
24 #include <mono/metadata/class-internals.h>
25 #include <mono/utils/mono-os-mutex.h>
36 struct _MonoProfiler {
45 static mono_mutex_t mutex;
46 static gboolean verbose;
49 prof_jit_enter (MonoProfiler *prof, MonoMethod *method)
54 prof_jit_leave (MonoProfiler *prof, MonoMethod *method, int result)
56 MonoImage *image = mono_class_get_image (mono_method_get_class (method));
58 if (!image->assembly || method->wrapper_type)
61 mono_os_mutex_lock (&mutex);
62 g_ptr_array_add (prof->methods, method);
63 mono_os_mutex_unlock (&mutex);
67 prof_shutdown (MonoProfiler *prof);
72 printf ("AOT profiler.\n");
73 printf ("Usage: mono --profile=aot[:OPTION1[,OPTION2...]] program.exe\n");
74 printf ("Options:\n");
75 printf ("\thelp show this usage info\n");
76 printf ("\toutput=FILENAME write the data to file FILENAME (required)\n");
77 printf ("\tverbose print diagnostic info\n");
83 match_option (const char* p, const char *opt, char **rval)
85 int len = strlen (opt);
86 if (strncmp (p, opt, len) == 0) {
88 if (p [len] == '=' && p [len + 1]) {
89 const char *opt = p + len + 1;
90 const char *end = strchr (opt, ',');
98 val = (char *) g_malloc (l + 1);
104 if (p [len] == 0 || p [len] == ',') {
106 return p + len + (p [len] == ',');
120 mono_profiler_startup (const char *desc);
123 * mono_profiler_startup:
127 mono_profiler_startup (const char *desc)
135 if (strncmp (p, "aot", 3))
140 for (; *p; p = opt) {
146 if ((opt = match_option (p, "help", NULL)) != p) {
150 if ((opt = match_option (p, "verbose", NULL)) != p) {
154 if ((opt = match_option (p, "output", &val)) != p) {
158 fprintf (stderr, "mono-profiler-aot: Unknown option: '%s'.\n", p);
163 fprintf (stderr, "mono-profiler-aot: The 'output' argument is required.\n");
167 prof = g_new0 (MonoProfiler, 1);
168 prof->images = g_hash_table_new (NULL, NULL);
169 prof->classes = g_hash_table_new (NULL, NULL);
170 prof->methods = g_ptr_array_new ();
171 prof->outfile_name = outfile_name;
173 mono_os_mutex_init (&mutex);
175 mono_profiler_install (prof, prof_shutdown);
177 mono_profiler_install_jit_compile (prof_jit_enter, prof_jit_leave);
179 mono_profiler_set_events (MONO_PROFILE_JIT_COMPILATION);
183 emit_byte (MonoProfiler *prof, guint8 value)
185 fwrite (&value, 1, 1, prof->outfile);
189 emit_int32 (MonoProfiler *prof, int value)
192 fwrite (&value, 4, 1, prof->outfile);
196 emit_string (MonoProfiler *prof, const char *str)
198 int len = strlen (str);
200 emit_int32 (prof, len);
201 fwrite (str, len, 1, prof->outfile);
205 emit_record (MonoProfiler *prof, AotProfRecordType type, int id)
207 emit_byte (prof, type);
208 emit_int32 (prof, id);
212 add_image (MonoProfiler *prof, MonoImage *image)
214 int id = GPOINTER_TO_INT (g_hash_table_lookup (prof->images, image));
219 emit_record (prof, AOTPROF_RECORD_IMAGE, id);
220 emit_string (prof, image->assembly->aname.name);
221 emit_string (prof, image->guid);
222 g_hash_table_insert (prof->images, image, GINT_TO_POINTER (id + 1));
227 add_class (MonoProfiler *prof, MonoClass *klass);
230 add_type (MonoProfiler *prof, MonoType *type)
232 switch (type->type) {
234 case MONO_TYPE_SZARRAY: {
235 int eid = add_type (prof, &type->data.klass->byval_arg);
238 int id = prof->id ++;
239 emit_record (prof, AOTPROF_RECORD_TYPE, id);
240 emit_byte (prof, MONO_TYPE_SZARRAY);
241 emit_int32 (prof, id);
245 case MONO_TYPE_BOOLEAN:
259 case MONO_TYPE_OBJECT:
260 case MONO_TYPE_STRING:
261 case MONO_TYPE_CLASS:
262 case MONO_TYPE_VALUETYPE:
263 case MONO_TYPE_GENERICINST:
264 return add_class (prof, mono_class_from_mono_type (type));
271 add_ginst (MonoProfiler *prof, MonoGenericInst *inst)
277 ids = g_malloc0 (inst->type_argc * sizeof (int));
278 for (i = 0; i < inst->type_argc; ++i) {
279 MonoType *t = inst->type_argv [i];
280 ids [i] = add_type (prof, t);
287 emit_record (prof, AOTPROF_RECORD_GINST, id);
288 emit_int32 (prof, inst->type_argc);
289 for (i = 0; i < inst->type_argc; ++i)
290 emit_int32 (prof, ids [i]);
297 add_class (MonoProfiler *prof, MonoClass *klass)
299 int id, inst_id = -1, image_id;
302 id = GPOINTER_TO_INT (g_hash_table_lookup (prof->classes, klass));
306 image_id = add_image (prof, klass->image);
308 if (mono_class_is_ginst (klass)) {
309 MonoGenericContext *ctx = mono_class_get_context (klass);
310 inst_id = add_ginst (prof, ctx->class_inst);
315 if (klass->nested_in)
316 name = g_strdup_printf ("%s.%s/%s", klass->nested_in->name_space, klass->nested_in->name, klass->name);
318 name = g_strdup_printf ("%s.%s", klass->name_space, klass->name);
321 emit_record (prof, AOTPROF_RECORD_TYPE, id);
322 emit_byte (prof, MONO_TYPE_CLASS);
323 emit_int32 (prof, image_id);
324 emit_int32 (prof, inst_id);
325 emit_string (prof, name);
327 g_hash_table_insert (prof->classes, klass, GINT_TO_POINTER (id + 1));
332 add_method (MonoProfiler *prof, MonoMethod *m)
335 MonoMethodSignature *sig;
338 sig = mono_method_signature_checked (m, &error);
339 g_assert (mono_error_ok (&error));
341 int class_id = add_class (prof, m->klass);
346 if (m->is_inflated) {
347 MonoGenericContext *ctx = mono_method_get_context (m);
348 if (ctx->method_inst)
349 inst_id = add_ginst (prof, ctx->method_inst);
351 int id = prof->id ++;
352 emit_record (prof, AOTPROF_RECORD_METHOD, id);
353 emit_int32 (prof, class_id);
354 emit_int32 (prof, inst_id);
355 emit_int32 (prof, sig->param_count);
356 emit_string (prof, m->name);
357 s = mono_signature_full_name (sig);
358 emit_string (prof, s);
361 printf ("%s %d\n", mono_method_full_name (m, 1), id);
364 /* called at the end of the program */
366 prof_shutdown (MonoProfiler *prof)
372 printf ("Creating output file: %s\n", prof->outfile_name);
374 if (prof->outfile_name [0] == '#') {
375 int fd = strtol (prof->outfile_name + 1, NULL, 10);
376 outfile = fdopen (fd, "a");
378 outfile = fopen (prof->outfile_name, "w+");
381 fprintf (stderr, "Unable to create output file '%s': %s.\n", prof->outfile_name, strerror (errno));
384 prof->outfile = outfile;
386 gint32 version = (AOT_PROFILER_MAJOR_VERSION << 16) | AOT_PROFILER_MINOR_VERSION;
387 sprintf (magic, AOT_PROFILER_MAGIC);
388 fwrite (magic, strlen (magic), 1, outfile);
389 emit_int32 (prof, version);
391 GHashTable *all_methods = g_hash_table_new (NULL, NULL);
392 for (mindex = 0; mindex < prof->methods->len; ++mindex) {
393 MonoMethod *m = (MonoMethod*)g_ptr_array_index (prof->methods, mindex);
395 if (!mono_method_get_token (m))
398 if (g_hash_table_lookup (all_methods, m))
400 g_hash_table_insert (all_methods, m, m);
402 add_method (prof, m);
404 emit_record (prof, AOTPROF_RECORD_NONE, 0);
408 g_hash_table_destroy (all_methods);
409 g_hash_table_destroy (prof->classes);
410 g_hash_table_destroy (prof->images);
411 g_ptr_array_free (prof->methods, TRUE);
412 g_free (prof->outfile_name);