ltt/branches/poly/lttv/main.c

   1
   2 #include <lttv/hook.h>
   3 #include <lttv/module.h>
   4 #include <lttv/lttv.h>
   5 #include <lttv/iattribute.h>
   6 #include <lttv/attribute.h>
   7 #include <lttv/option.h>
   8 #include <lttv/traceset.h>
   9 #include <ltt/trace.h>
  10
  11 void lttv_option_init(int argc, char **argv);
  12 void lttv_option_destroy();
  13
  14 void lttv_module_init(int argc, char **argv);
  15 void lttv_module_destroy();
  16
  17 void lttv_state_init(int argc, char **argv);
  18 void lttv_state_destroy();
  19
  20 /* The main program maintains a few central data structures and relies
  21    on modules for the rest. These data structures may be accessed by modules
  22    through an exported API */
  23
  24 static LttvIAttribute *attributes;
  25
  26 static LttvHooks
  27   *before_options,
  28   *after_options,
  29   *before_main,
  30   *after_main;
  31
  32 static char
  33   *a_module,
  34   *a_module_path;
  35
  36 static int a_argc;
  37
  38 static char **a_argv;
  39
  40 static void lttv_module_option(void *hook_data);
  41
  42 static void lttv_module_path_option(void *hook_data);
  43
  44 #ifdef MEMDEBUG
  45 extern struct GMemVTable *glib_mem_profiler_table;
  46 #endif
  47
  48
  49 /* Since everything is done in modules, the main program only takes care
  50    of the infrastructure. */
  51
  52 int main(int argc, char **argv) {
  53
  54   LttvAttributeValue value;
  55
  56 #ifdef MEMDEBUG
  57   g_mem_set_vtable(glib_mem_profiler_table);
  58   g_message("Memory summary before main");
  59   g_mem_profile();
  60 #endif
  61
  62   attributes = LTTV_IATTRIBUTE(g_object_new(LTTV_ATTRIBUTE_TYPE, NULL));
  63
  64   before_options = lttv_hooks_new();
  65   after_options = lttv_hooks_new();
  66   before_main = lttv_hooks_new();
  67   after_main = lttv_hooks_new();
  68
  69   g_assert(lttv_iattribute_find_by_path(attributes, "hooks/options/before",
  70       LTTV_POINTER, &value));
  71   *(value.v_pointer) = before_options;
  72   g_assert(lttv_iattribute_find_by_path(attributes, "hooks/options/after",
  73       LTTV_POINTER, &value));
  74   *(value.v_pointer) = after_options;
  75   g_assert(lttv_iattribute_find_by_path(attributes, "hooks/main/before",
  76       LTTV_POINTER, &value));
  77   *(value.v_pointer) = before_main;
  78   g_assert(lttv_iattribute_find_by_path(attributes, "hooks/main/after",
  79       LTTV_POINTER, &value));
  80   *(value.v_pointer) = after_main;
  81
  82
  83   /* Initialize the command line options processing */
  84
  85   lttv_option_init(argc,argv);
  86   lttv_module_init(argc,argv);
  87   lttv_state_init(argc,argv);
  88
  89   /* Initialize the module loading */
  90
  91   lttv_module_path_add("/usr/lib/lttv/plugins");
  92
  93   /* Add some built-in options */
  94
  95   lttv_option_add("module",'m', "load a module", "name of module to load",
  96       LTTV_OPT_STRING, &a_module, lttv_module_option, NULL);
  97
  98   lttv_option_add("modules-path", 'L',
  99       "add a directory to the module search path",
 100       "directory to add to the path", LTTV_OPT_STRING, &a_module_path,
 101       lttv_module_path_option, NULL);
 102
 103   lttv_hooks_call(before_options, NULL);
 104   lttv_hooks_call(after_options, NULL);
 105   lttv_hooks_call(before_main, NULL);
 106   lttv_hooks_call(after_main, NULL);
 107
 108   lttv_state_destroy();
 109   lttv_module_destroy();
 110   lttv_option_destroy();
 111
 112   lttv_hooks_destroy(before_options);
 113   lttv_hooks_destroy(after_options);
 114   lttv_hooks_destroy(before_main);
 115   lttv_hooks_destroy(after_main);
 116   g_object_unref(attributes);
 117
 118 #ifdef MEMDEBUG
 119     g_message("Memory summary after main");
 120     g_mem_profile();
 121 #endif
 122 }
 123
 124
 125 LttvAttribute *lttv_global_attributes()
 126 {
 127   return attributes;
 128 }
 129
 130
 131 void lttv_module_option(void *hook_data)
 132 {
 133   lttv_module_load(a_module,a_argc,a_argv);
 134 }
 135
 136
 137 void lttv_module_path_option(void *hook_data)
 138 {
 139   lttv_module_path_add(a_module_path);
 140 }