src/call_notifier.c

   1 /*
   2  * transsip - the telephony toolkit
   3  * By Daniel Borkmann <daniel@transsip.org>
   4  * Copyright 2011, 2012 Daniel Borkmann <dborkma@tik.ee.ethz.ch>
   5  * Subject to the GPL, version 2.
   6  */
   7
   8 #include "notifier.h"
   9 #include "locking.h"
  10 #include "call_notifier.h"
  11
  12 static struct event_head call_notifier;
  13
  14 void init_call_notifier(void)
  15 {
  16         call_notifier.head = NULL;
  17         mutexlock_init(&call_notifier.lock);
  18 }
  19
  20 int register_call_notifier(struct event_block *block)
  21 {
  22         int ret;
  23
  24         mutexlock_lock(&call_notifier.lock);
  25         ret = register_event_hook(&call_notifier.head, block);
  26         mutexlock_unlock(&call_notifier.lock);
  27
  28         return ret;
  29 }
  30
  31 int register_call_notifier_once(struct event_block *block)
  32 {
  33         int ret;
  34
  35         mutexlock_lock(&call_notifier.lock);
  36         ret = register_event_hook_once(&call_notifier.head, block);
  37         mutexlock_unlock(&call_notifier.lock);
  38
  39         return ret;
  40 }
  41
  42 int unregister_call_notifier(struct event_block *block)
  43 {
  44         int ret;
  45
  46         mutexlock_lock(&call_notifier.lock);
  47         ret = unregister_event_hook(&call_notifier.head, block);
  48         mutexlock_unlock(&call_notifier.lock);
  49
  50         return ret;
  51 }
  52
  53 int call_notifier_exec(unsigned long event, const void *arg)
  54 {
  55         int ret;
  56
  57         mutexlock_lock(&call_notifier.lock);
  58         ret = call_event_hooks(&call_notifier.head, event, arg, NULL);
  59         mutexlock_unlock(&call_notifier.lock);
  60
  61         return ret;
  62 }