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 <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>
  19 #include <string.h>
  20 #include <errno.h>
  21 #include <stdlib.h>
  22 #include <glib.h>
  23 #include <sys/stat.h>
  24
  25 struct _MonoProfiler {
  26         GHashTable *images;
  27 };
  28
  29 typedef struct {
  30         GList *methods;
  31 } PerImageData;
  32
  33 typedef struct ForeachData {
  34         MonoProfiler *prof;
  35         FILE *outfile;
  36         MonoImage *image;
  37         MonoMethod *method;
  38 } ForeachData;
  39
  40 static void
  41 foreach_method (gpointer data, gpointer user_data)
  42 {
  43         ForeachData *udata = (ForeachData*)user_data;
  44         MonoMethod *method = (MonoMethod*)data;
  45         char *name;
  46
  47         if (!mono_method_get_token (method) || mono_class_get_image (mono_method_get_class (method)) != udata->image)
  48                 return;
  49
  50         name = mono_method_full_name (method, TRUE);
  51         fprintf (udata->outfile, "%s\n", name);
  52         g_free (name);
  53 }
  54
  55 static void
  56 output_image (gpointer key, gpointer value, gpointer user_data)
  57 {
  58         MonoImage *image = (MonoImage*)key;
  59         PerImageData *image_data = (PerImageData*)value;
  60         MonoProfiler *prof = (MonoProfiler*)user_data;
  61         char *tmp, *outfile_name;
  62         FILE *outfile;
  63         int i, err;
  64         ForeachData data;
  65
  66         tmp = g_strdup_printf ("%s/.mono/aot-profile-data", g_get_home_dir ());
  67
  68         if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) {
  69 #ifdef HOST_WIN32
  70                 err = mkdir (tmp);
  71 #else
  72                 err = mkdir (tmp, 0777);
  73 #endif
  74                 if (err) {
  75                         fprintf (stderr, "mono-profiler-aot: Unable to create output directory '%s': %s\n", tmp, g_strerror (errno));
  76                         exit (1);
  77                 }
  78         }
  79
  80         i = 0;
  81         while (TRUE) {
  82                 outfile_name = g_strdup_printf ("%s/%s-%d", tmp, mono_image_get_name (image), i);
  83
  84                 if (!g_file_test (outfile_name, G_FILE_TEST_IS_REGULAR))
  85                         break;
  86
  87                 i ++;
  88         }
  89
  90         printf ("Creating output file: %s\n", outfile_name);
  91
  92         outfile = fopen (outfile_name, "w+");
  93         g_assert (outfile);
  94
  95         fprintf (outfile, "#VER:%d\n", 2);
  96
  97         data.prof = prof;
  98         data.outfile = outfile;
  99         data.image = image;
 100
 101         g_list_foreach (image_data->methods, foreach_method, &data);
 102 }
 103
 104 /* called at the end of the program */
 105 static void
 106 prof_shutdown (MonoProfiler *prof)
 107 {
 108         g_hash_table_foreach (prof->images, output_image, prof);
 109 }
 110
 111 static void
 112 prof_jit_enter (MonoProfiler *prof, MonoMethod *method)
 113 {
 114 }
 115
 116 static void
 117 prof_jit_leave (MonoProfiler *prof, MonoMethod *method, int result)
 118 {
 119         MonoImage *image = mono_class_get_image (mono_method_get_class (method));
 120         PerImageData *data;
 121
 122         data = g_hash_table_lookup (prof->images, image);
 123         if (!data) {
 124                 data = g_new0 (PerImageData, 1);
 125                 g_hash_table_insert (prof->images, image, data);
 126         }
 127
 128         data->methods = g_list_append (data->methods, method);
 129 }
 130
 131 void
 132 mono_profiler_startup (const char *desc);
 133
 134 /* the entry point */
 135 void
 136 mono_profiler_startup (const char *desc)
 137 {
 138         MonoProfiler *prof;
 139
 140         prof = g_new0 (MonoProfiler, 1);
 141         prof->images = g_hash_table_new (NULL, NULL);
 142
 143         mono_profiler_install (prof, prof_shutdown);
 144
 145         mono_profiler_install_jit_compile (prof_jit_enter, prof_jit_leave);
 146
 147         mono_profiler_set_events (MONO_PROFILE_JIT_COMPILATION);
 148 }
 149
 150