754
技術社區[雲棲]
網絡子係統83_inet協議族-SOCK_RAW(四)
// raw sock數據就緒函數
// raw sock在raw_recvmsg中阻塞,在raw_local_deliver通過sock->sk_data_ready通知輸入數據就緒
// 步驟:
// 1.過濾感興趣的事件
// 2.喚醒阻塞進程,並將進程從wq上取下
1.1 static int receiver_wake_function(wait_queue_t *wait, unsigned int mode, int sync,
void *key)
{
unsigned long bits = (unsigned long)key;
//POLLIN輸入數據就緒
//POLLER輸出數據就緒
if (bits && !(bits & (POLLIN | POLLERR)))
return 0;
//喚醒阻塞進程,並將進程從wq上取下
return autoremove_wake_function(wait, mode, sync, key);
}
// 喚醒阻塞進程,並將進程從wq上取下
1.2 int autoremove_wake_function(wait_queue_t *wait, unsigned mode, int sync, void *key)
{
int ret = default_wake_function(wait, mode, sync, key);
if (ret)
list_del_init(&wait->task_list);
return ret;
}
最後更新:2017-04-03 12:55:18