src/call-notifier.c

   1 #include "notifier.h"
   2 #include "locking.h"
   3 #include "call-notifier.h"
   4
   5 static struct event_head call_notifier;
   6
   7 void init_call_notifier(void)
   8 {
   9         call_notifier.head = NULL;
  10         mutexlock_init(&call_notifier.lock);
  11 }
  12
  13 int register_call_notifier(struct event_block *block)
  14 {
  15         int ret;
  16
  17         mutexlock_lock(&call_notifier.lock);
  18         ret = register_event_hook(&call_notifier.head, block);
  19         mutexlock_unlock(&call_notifier.lock);
  20
  21         return ret;
  22 }
  23
  24 int register_call_notifier_once(struct event_block *block)
  25 {
  26         int ret;
  27
  28         mutexlock_lock(&call_notifier.lock);
  29         ret = register_event_hook_once(&call_notifier.head, block);
  30         mutexlock_unlock(&call_notifier.lock);
  31
  32         return ret;
  33 }
  34
  35 int unregister_call_notifier(struct event_block *block)
  36 {
  37         int ret;
  38
  39         mutexlock_lock(&call_notifier.lock);
  40         ret = unregister_event_hook(&call_notifier.head, block);
  41         mutexlock_unlock(&call_notifier.lock);
  42
  43         return ret;
  44 }
  45
  46 int call_notifier_exec(unsigned long event, const void *arg)
  47 {
  48         int ret;
  49
  50         mutexlock_lock(&call_notifier.lock);
  51         ret = call_event_hooks(&call_notifier.head, event, arg, NULL);
  52         mutexlock_unlock(&call_notifier.lock);
  53
  54         return ret;
  55 }