LinuxQuestions.org - [SOLVED] Why the interactivity of semaphore is better than mutual lock???

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- - Why the interactivity of semaphore is better than mutual lock??? (https://www.linuxquestions.org/questions/linux-newbie-8/why-the-interactivity-of-semaphore-is-better-than-mutual-lock-866951/)

Why the interactivity of semaphore is better than mutual lock???

Please look at the code:

Code:

for(i = 0; i < 100; i++) {

        mutex_lock();

        ...

        mutex_unlock();

}

If a process A into the critical region 100 times, at this time, process B also into the critical region, now the B will be sleep until the A execute 100 times loop.

If I use the semaphore instead of the mutex_lock, it will never happen, the B will get the semaphore when the A isn't execute 100 times loop.

Does this the mutex feature??

Can anybody tell me, why it is??

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http://www.linuxquestions.org/questi...2/#post4281467

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tgvlcw,

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