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 // MD compile fix: int instead of bool as return value
  10 typedef int (*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_remove(lttv_hooks *h, lttv_hook f, void *hook_data);
  25
  26 unsigned lttv_hooks_number(lttv_hooks *h);
  27
  28 void lttv_hooks_get(lttv_hooks *h, unsigned i, lttv_hook *f, void **hook_data);
  29
  30 void lttv_hooks_remove_by_position(lttv_hooks *h, unsigned i);
  31
  32 int lttv_hooks_call(lttv_hooks *h, void *call_data);
  33
  34 int lttv_hooks_call_check(lttv_hooks *h, void *call_data);
  35
  36
  37 /* Sometimes different hooks need to be called based on the case. The
  38    case is represented by an unsigned integer id and may represent different
  39    event types, for instance. */
  40
  41 typedef GPtrArray _lttv_hooks_by_id;
  42 typedef _lttv_hooks_by_id lttv_hooks_by_id;
  43
  44 lttv_hooks_by_id *lttv_hooks_by_id_new();
  45
  46 void lttv_hooks_by_id_destroy(lttv_hooks_by_id *h);
  47
  48 void lttv_hooks_by_id_add(lttv_hooks_by_id *h, lttv_hook f, void *hook_data,
  49     unsigned int id);
  50
  51 void lttv_hooks_by_id_call(lttv_hooks_by_id *h, void *call_data, unsigned int id);
  52
  53 #endif // HOOK_H