两种模式的理解:(两种模式主体都是前台进程,post/wait是等待lgwr通知,polling是主动轮序lgwr) Post/wait:用户会话被动等待LGWR通知redo写入到log file完毕,这种方式响应速度比较快。若cpu空闲时采用这种方式可以体验到更好的响应时间。 Polling:用户会话主动轮询LGWR,观测是否完成写入(轮询的间隔是10ms)。这种方式比Post...
两种模式的理解:(两种模式主体都是前台进程,post/wait是等待lgwr通知,polling是主动轮序lgwr) Post/wait:用户会话被动等待LGWR通知redo写入到log file完毕,这种方式响应速度比较快。若cpu空闲时采用这种方式可以体验到更好的响应时间。 Polling:用户会话主动轮询LGWR,观测是否完成写入(轮询的间隔是10ms)。这种方式比Post...
sem_wait(); 一次调用,做一次-- 操作, 当信号量的值为0时,再次 --就会阻塞。 (对比 pthread_mutex_lock) sem_post(); 一次调用,做一次++ 操作. 当信号量的值为 N 时, 再次 ++ 就会阻塞。(对比 pthread_mutex_unlock)
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当调用 sem_wait时，表示它等待信号量值>0，满足时它减信号值减1；而sem_post表示可用资源增加1.对于...
So why post wait times that might encourage people who otherwise could have tried an urgent-care center? There are no statistics on how many hospitals advertise wait times, although they tend to have multiple ERs in a region, usually the suburbs. The idea: People with less urgent conditions ...
Informs listeners that this Connection is in a post-dial wait state. [Android.Runtime.Register("setPostDialWait", "(Ljava/lang/String;)V", "", ApiSince=23)] public void SetPostDialWait (string? remaining); Parameters remaining String The DTMF character sequence remaining to be emitted ...
Scan for NOTE, OPTIMIZE, TODO, HACK, XXX, FIXME, and BUG comments within your source, and print them to stdout so you can deal with them. - JohnPostlethwait/fixme
They just have to wait patiently for the nextpost. 他们只好耐心地等下一批邮件。 柯林斯高阶英语词典 If I write a letter, would youpostit for me?... 如果我写封信,你能替我寄出去吗? 柯林斯高阶英语词典 I'mpostingyou a cheque tonight... ...
[Android.Runtime.Register("onPostDialWait", "(Landroid/telecom/Call;Ljava/lang/String;)V", "GetOnPostDialWait_Landroid_telecom_Call_Ljava_lang_String_Handler", ApiSince=23)] public virtual void OnPostDialWait (Android.Telecom.Call call, string remainingPostDialSequence); Параметры...