lttng-xenomai/LinuxTraceToolkitViewer-0.8.61-xenoltt/lttv/lttv/main.c

   1 /* This file is part of the Linux Trace Toolkit viewer
   2  * Copyright (C) 2003-2004 Michel Dagenais
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License Version 2 as
   6  * published by the Free Software Foundation;
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  16  * MA 02111-1307, USA.
  17  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include <config.h>
  21 #endif
  22
  23 #include <lttv/hook.h>
  24 #include <lttv/module.h>
  25 #include <lttv/lttv.h>
  26 #include <lttv/iattribute.h>
  27 #include <lttv/attribute.h>
  28 #include <lttv/option.h>
  29 #include <lttv/traceset.h>
  30 #include <ltt/trace.h>
  31 #include <stdio.h>
  32 #include <string.h>
  33
  34
  35 /* The main program maintains a few central data structures and relies
  36    on modules for the rest. These data structures may be accessed by modules
  37    through an exported API */
  38
  39 static LttvIAttribute *attributes;
  40
  41 static LttvHooks
  42   *before_options,
  43   *after_options,
  44   *before_main,
  45   *after_main;
  46
  47 static char
  48   *a_module,
  49   *a_module_path;
  50
  51 static gboolean
  52   a_verbose,
  53   a_debug,
  54   a_fatal;
  55
  56 gboolean lttv_profile_memory;
  57
  58 int lttv_argc;
  59
  60 char **lttv_argv;
  61
  62 static void lttv_module_option(void *hook_data);
  63
  64 static void lttv_module_path_option(void *hook_data);
  65
  66 static void lttv_verbose(void *hook_data);
  67
  68 static void lttv_debug(void *hook_data);
  69
  70 static void lttv_fatal(void *hook_data);
  71
  72 static void lttv_help(void *hook_data);
  73
  74 /* This is the handler to specify when we dont need all the debugging
  75    messages. It receives the message and does nothing. */
  76
  77 void ignore_and_drop_message(const gchar *log_domain, GLogLevelFlags log_level,
  78     const gchar *message, gpointer user_data) {
  79 }
  80
  81
  82 /* Since everything is done in modules, the main program only takes care
  83    of the infrastructure. */
  84
  85 int main(int argc, char **argv) {
  86
  87   int i;
  88
  89   char
  90     *profile_memory_short_option = "-M",
  91     *profile_memory_long_option = "--memory";
  92
  93   gboolean profile_memory = FALSE;
  94
  95   LttvAttributeValue value;
  96
  97   lttv_argc = argc;
  98   lttv_argv = argv;
  99
 100   /* Before anything else, check if memory profiling is requested */
 101
 102   for(i = 1 ; i < argc ; i++) {
 103     if(*(argv[i]) != '-') break;
 104     if(strcmp(argv[i], profile_memory_short_option) == 0 ||
 105        strcmp(argv[i], profile_memory_long_option) == 0) {
 106       g_mem_set_vtable(glib_mem_profiler_table);
 107       g_message("Memory summary before main");
 108       g_mem_profile();
 109       profile_memory = TRUE;
 110       break;
 111     }
 112   }
 113
 114
 115   /* Initialize glib and by default ignore info and debug messages */
 116
 117   g_type_init();
 118   //g_type_init_with_debug_flags (G_TYPE_DEBUG_OBJECTS | G_TYPE_DEBUG_SIGNALS);
 119   g_log_set_handler(NULL, G_LOG_LEVEL_INFO, ignore_and_drop_message, NULL);
 120   g_log_set_handler(NULL, G_LOG_LEVEL_DEBUG, ignore_and_drop_message, NULL);
 121
 122
 123   /* Have an attributes subtree to store hooks to be registered by modules. */
 124
 125   attributes = LTTV_IATTRIBUTE(g_object_new(LTTV_ATTRIBUTE_TYPE, NULL));
 126
 127   before_options = lttv_hooks_new();
 128   after_options = lttv_hooks_new();
 129   before_main = lttv_hooks_new();
 130   after_main = lttv_hooks_new();
 131
 132
 133   /* Create a number of hooks lists */
 134
 135   g_assert(lttv_iattribute_find_by_path(attributes, "hooks/options/before",
 136       LTTV_POINTER, &value));
 137   *(value.v_pointer) = before_options;
 138   g_assert(lttv_iattribute_find_by_path(attributes, "hooks/options/after",
 139       LTTV_POINTER, &value));
 140   *(value.v_pointer) = after_options;
 141   g_assert(lttv_iattribute_find_by_path(attributes, "hooks/main/before",
 142       LTTV_POINTER, &value));
 143   *(value.v_pointer) = before_main;
 144   g_assert(lttv_iattribute_find_by_path(attributes, "hooks/main/after",
 145       LTTV_POINTER, &value));
 146   *(value.v_pointer) = after_main;
 147
 148
 149   /* Initialize the command line options processing */
 150
 151   GError *error = NULL;
 152
 153   LttvModule *module_module = lttv_module_require("module", &error);
 154   if(error != NULL) g_error("%s", error->message);
 155   LttvModule *module_option = lttv_module_require("option", &error);
 156   if(error != NULL) g_error("%s", error->message);
 157
 158   /* Initialize the module loading */
 159
 160   lttv_library_path_add(PACKAGE_PLUGIN_DIR);
 161
 162
 163   /* Add some built-in options */
 164
 165   lttv_option_add("module",'m', "load a module", "name of module to load",
 166       LTTV_OPT_STRING, &a_module, lttv_module_option, NULL);
 167
 168   lttv_option_add("modules-path", 'L',
 169       "add a directory to the module search path",
 170       "directory to add to the path", LTTV_OPT_STRING, &a_module_path,
 171       lttv_module_path_option, NULL);
 172
 173   lttv_option_add("help",'h', "basic help", "none",
 174       LTTV_OPT_NONE, NULL, lttv_help, NULL);
 175
 176   a_verbose = FALSE;
 177   lttv_option_add("verbose",'v', "print information messages", "none",
 178       LTTV_OPT_NONE, NULL, lttv_verbose, NULL);
 179
 180   a_debug = FALSE;
 181   lttv_option_add("debug",'d', "print debugging messages", "none",
 182       LTTV_OPT_NONE, NULL, lttv_debug, NULL);
 183
 184   a_fatal = FALSE;
 185   lttv_option_add("fatal",'f', "make critical messages fatal",
 186                   "none",
 187       LTTV_OPT_NONE, NULL, lttv_fatal, NULL);
 188
 189   lttv_profile_memory = FALSE;
 190   lttv_option_add(profile_memory_long_option + 2,
 191       profile_memory_short_option[1], "print memory information", "none",
 192       LTTV_OPT_NONE, &lttv_profile_memory, NULL, NULL);
 193
 194
 195   /* Process the options */
 196
 197   lttv_hooks_call(before_options, NULL);
 198   lttv_option_parse(argc, argv);
 199   lttv_hooks_call(after_options, NULL);
 200
 201
 202   /* Memory profiling to be useful must be activated as early as possible */
 203
 204   if(profile_memory != lttv_profile_memory)
 205     g_error("Memory profiling options must appear before other options");
 206
 207
 208   /* Do the main work */
 209
 210   lttv_hooks_call(before_main, NULL);
 211   lttv_hooks_call(after_main, NULL);
 212
 213
 214   /* Clean up everything */
 215
 216   lttv_module_release(module_option);
 217   lttv_module_release(module_module);
 218
 219   lttv_hooks_destroy(before_options);
 220   lttv_hooks_destroy(after_options);
 221   lttv_hooks_destroy(before_main);
 222   lttv_hooks_destroy(after_main);
 223   g_object_unref(attributes);
 224
 225   if(profile_memory) {
 226     g_message("Memory summary after main");
 227     g_mem_profile();
 228   }
 229   return 0;
 230 }
 231
 232
 233 LttvAttribute *lttv_global_attributes()
 234 {
 235   return (LttvAttribute*)attributes;
 236 }
 237
 238
 239 void lttv_module_option(void *hook_data)
 240 {
 241   GError *error = NULL;
 242
 243   lttv_module_require(a_module, &error);
 244   if(error != NULL) g_error("%s", error->message);
 245 }
 246
 247
 248 void lttv_module_path_option(void *hook_data)
 249 {
 250   lttv_library_path_add(a_module_path);
 251 }
 252
 253
 254 void lttv_verbose(void *hook_data)
 255 {
 256   g_log_set_handler(NULL, G_LOG_LEVEL_INFO, g_log_default_handler, NULL);
 257   g_info("Logging set to include INFO level messages");
 258 }
 259
 260 void lttv_debug(void *hook_data)
 261 {
 262   g_log_set_handler(NULL, G_LOG_LEVEL_DEBUG, g_log_default_handler, NULL);
 263   g_info("Logging set to include DEBUG level messages");
 264 }
 265
 266 void lttv_fatal(void *hook_data)
 267 {
 268   g_log_set_always_fatal(G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL);
 269   //g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
 270   g_info("Critical log from glib will abort execution");
 271 }
 272
 273 void lttv_help(void *hook_data)
 274 {
 275         printf("Linux Trace Toolkit Visualizer\n");
 276         printf("\n");
 277         lttv_option_show_help();
 278         printf("\n");
 279 }
 280
 281 /*
 282
 283 - Define formally traceset/trace in the GUI for the user and decide how
 284    trace/traceset sharing goes in the application.
 285
 286 - Use appropriately the new functions in time.h
 287
 288 - remove the separate tracefiles (control/per cpu) arrays/loops in context.
 289
 290 - split processTrace into context.c and processTrace.c
 291
 292 - check spelling conventions.
 293
 294 - get all the copyright notices.
 295
 296 - remove all the warnings.
 297
 298 - get all the .h files properly doxygen commented to produce useful documents.
 299
 300 - have an intro/architecture document.
 301
 302 - write a tutorial */