else if (pid == -1) { // int retval = 0, count = 0; struct task_struct *p; read...
先来看pid > 0里的处理, 前面我们讲过如果pid是大于0的,这个signal发送到这个pid相应的进程: if(pid>0){▸rcu_read_lock();▸ret=kill_pid_info(sig,info,find_vpid(pid));▸rcu_read_unlock();▸returnret;} 我们来讲下find_vpid,在用户态调用kill时只需要知道进程的pid, 这个pid就是整数型值...
*/signal->flags=SIGNAL_GROUP_EXIT;signal->group_exit_code=sig;signal->group_stop_count=0;t=p;do{task_clear_jobctl_pending(t,JOBCTL_PENDING_MASK);sigaddset(&t->pending.signal,SIGKILL);signal_wake_up(t,1);}while_each_thread(p,t);return;}}/* * The signal is already in the shared-...
-1表示signal,表示当前节点释放锁后需要唤醒后面可被唤醒的节点。 -2表示condition,我们这篇的重点,表示当前节点在条件队列中。 -3表示propagate,表示释放共享资源的时候会向后传播释放其他共享节点。 当然,除了-2这个condition状态,其他的等待状态我们之前都或多或少分析过,今天着重学习condition这个状态的意义。 我们还...
# Let y be a vector of timeseries data of at least length lag+2# Let mean() be a function that calculates the mean# Let std() be a function that calculates the standard deviaton# Let absolute() be the absolute value function# Settings (these are examples: choose what is best fo...
同样是Find查找，1362对应的OrderItems为空，1360对应的OrderItems的Count却为3，对应Sql查询的1362的Order...
if (roomCount < 2) { chat.server.createRoom($("#roomName").val()); } else { alert("聊天窗口只允许有2个"); } }) }) }) //发送消息的方法 function send(btn) { var message = $(btn).prev().val(); var room = $(btn).parent(); ...
reactionCount integer The count of reactions (likes, retweets, etc.) to shares Impression Count impressionCount integer The potential views of a post by sharers friends and followers Viewed Count viewedCount integer The number of times the post has been visited by logged-in users Click...
29 m_count = 0; 30 } 31 void TextDevice::run() { 32 exec(); 33 } 34 void TextDevice::stop() { 35 quit(); 36 } 37 void TextDevice::write(const QString& text) { 38 QMutexLocker locker(&m_mutex); 39 qDebug() << QString("Call %1: %2").arg(m_count++).arg(text);...
{36//查询聊天室37varroom = DbContext.Rooms.Find(p => p.RoomName ==roomName);3839//存在则加入40if(room ==null)return;4142//查找房间中是否存在此用户43varisExistUser = room.Users.FirstOrDefault(u => u.UserId ==Context.ConnectionId);4445//不存在则加入46if(isExistUser ==null)47{48...