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.
14 #include <mono/metadata/profiler.h>
15 #include <mono/metadata/tokentype.h>
16 #include <mono/metadata/tabledefs.h>
17 #include <mono/metadata/debug-helpers.h>
18 #include <mono/metadata/assembly.h>
24 struct _MonoProfiler {
32 typedef struct ForeachData {
40 foreach_method (gpointer data, gpointer user_data)
42 ForeachData *udata = (ForeachData*)user_data;
43 MonoMethod *method = (MonoMethod*)data;
45 if (!mono_method_get_token (method) || mono_class_get_image (mono_method_get_class (method)) != udata->image)
48 fprintf (udata->outfile, "%d\n", mono_method_get_token (method));
52 output_image (gpointer key, gpointer value, gpointer user_data)
54 MonoImage *image = (MonoImage*)key;
55 PerImageData *image_data = (PerImageData*)value;
56 MonoProfiler *prof = (MonoProfiler*)user_data;
57 char *tmp, *outfile_name;
62 tmp = g_strdup_printf ("%s/.mono/aot-profile-data", g_get_home_dir ());
64 if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
68 err = mkdir (tmp, 0777);
71 fprintf (stderr, "mono-profiler-aot: Unable to create output directory '%s': %s\n", tmp, g_strerror (errno));
78 outfile_name = g_strdup_printf ("%s/%s-%s-%d", tmp, mono_image_get_name (image), mono_image_get_guid (image), i);
80 if (!g_file_test (outfile_name, G_FILE_TEST_IS_REGULAR))
86 printf ("Creating output file: %s\n", outfile_name);
88 outfile = fopen (outfile_name, "w+");
91 fprintf (outfile, "#VER:%d\n", 1);
94 data.outfile = outfile;
97 g_list_foreach (image_data->methods, foreach_method, &data);
100 /* called at the end of the program */
102 prof_shutdown (MonoProfiler *prof)
104 g_hash_table_foreach (prof->images, output_image, prof);
108 prof_jit_enter (MonoProfiler *prof, MonoMethod *method)
113 prof_jit_leave (MonoProfiler *prof, MonoMethod *method, int result)
115 MonoImage *image = mono_class_get_image (mono_method_get_class (method));
118 data = g_hash_table_lookup (prof->images, image);
120 data = g_new0 (PerImageData, 1);
121 g_hash_table_insert (prof->images, image, data);
124 data->methods = g_list_append (data->methods, method);
128 mono_profiler_startup (const char *desc);
130 /* the entry point */
132 mono_profiler_startup (const char *desc)
136 prof = g_new0 (MonoProfiler, 1);
137 prof->images = g_hash_table_new (NULL, NULL);
139 mono_profiler_install (prof, prof_shutdown);
141 mono_profiler_install_jit_compile (prof_jit_enter, prof_jit_leave);
143 mono_profiler_set_events (MONO_PROFILE_JIT_COMPILATION);