信号 [英] Semaphore

问题描述

除了Mutex是Binary还是Semaphore是计数器之外，WinCE中的Mutex和Semaphore之间是否存在任何差异？优先级继承不适用于信号量，信号量没有与之关联的特定所有者。

这是什么概念？我要求两名司机使用相同的tranceiver。因此，当任何应用程序关闭一个驱动程序时，我想检查其他驱动程序是否需要它。对于这个要求我可以使用信号量还是只需要使用互斥量？

问候，

GSR

解决方案

互斥锁 有两种状态：发信号/未发信号，这意味着它拥有/不拥有。

当您使用 bInitialOwner = TRUE在命名的互斥锁上调用CreateMutex时你创建（或打开它已经存在）一个请求立即所有权的互斥锁：如果这成功，任何其他想要获取互斥锁的线程必须等到你调用
ReleaseMutex

 

Hi,

Are there any differences between Mutex and Semaphore in WinCE apart from Mutex is Binary and Semaphore is a counting one? and Priority inheritance does not apply to semaphores, which do not have a specific owner associated with them.

What is this owner concept? I have a requirement that two drivers are using the same tranceiver. So, while any application closes one driver I want to check if the other driver need it. For this requirement can I use Semaphore or do I need to use Mutex only?

Regards,

GSR

解决方案

A mutex  has two states: signaled / not signaled which means that it's owned/not owned.

When you call CreateMutex on a named mutex with bInitialOwner = TRUE you create (or open of it already exist) a mutex requesting immediate ownership: if this succeeds any other thread which want to grab the mutex must wait until you call ReleaseMutex

 

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