ltt/branches/poly/include/lttv/hook.h

   1 #ifndef HOOK_H
   2 #define HOOK_H
   3
   4 #include <glib.h>
   5
   6 /* A hook is a function to call with the supplied hook data, and with
   7    call site specific data (e.g., hooks for events are called with a
   8    pointer to the current event). */
   9
  10 typedef void (*lttv_hook)(void *hook_data, void *call_data);
  11
  12
  13 /* A list of hooks allows registering hooks to be called later. */
  14
  15 typedef GArray _lttv_hooks;
  16 typedef _lttv_hooks lttv_hooks;
  17
  18 lttv_hooks *lttv_hooks_new();
  19
  20 void lttv_hooks_destroy(lttv_hooks *h);
  21
  22 void lttv_hooks_add(lttv_hooks *h, lttv_hook f, void *hook_data);
  23
  24 void lttv_hooks_call(lttv_hooks *h, void *call_data);
  25
  26
  27 /* Sometimes different hooks need to be called based on the case. The
  28    case is represented by an unsigned integer id and may represent different
  29    event types, for instance. */
  30
  31 typedef GPtrArray _lttv_hooks_by_id;
  32 typedef _lttv_hooks_by_id lttv_hooks_by_id;
  33
  34 lttv_hooks_by_id *lttv_hooks_by_id_new();
  35
  36 void lttv_hooks_by_id_destroy(lttv_hooks_by_id *h);
  37
  38 void lttv_hooks_by_id_add(lttv_hooks_by_id *h, lttv_hook f, void *hook_data,
  39     unsigned int id);
  40
  41 void lttv_hooks_by_id_call(lttv_hooks_by_id *h, void *call_data, unsigned int id);
  42
  43 #endif // HOOK_H