Re: Understanding pthread_cond_wait()

"Szabolcs Ferenczi" <szabolcs.ferenczi@[EMAIL PROTECTED]
> wrote in message 
news:e2f3e0ea-83c8-477e-b9cb-eacf4467b61e@[EMAIL PROTECTED]
> On Sep 27, 4:28 am, "lancer6...@[EMAIL PROTECTED]
" <lancer6...@[EMAIL PROTECTED]
>
> wrote:
>> Hi all,
>>
>> I would like to know if my understanding on how the program handles
>> pthread_cond_wait() and pthread_cond_signal() is correct.
>>
>> Given the code below,
>>
>> // Thread A
>> while (1)
>> {
>>    do_Awork();
>>    signal = 1;
>>    pthread_cond_signal(&condition);
>>    signal = 0;
>>
>> }
>>
>> // Thread B, C, D
>> while (1)
>> {
>>    pthread_mutex_lock(&mutex);
>>    while (!signal)
>>       pthread_cond_wait(&condition, &mutex);
>>    do_BCDwork();
>>    pthread_mutex_unlock(&mutex);
>>
>> }
>
> When you consider using condition variables, it always helps you if
> you know about the condition variable test:
>
http://groups.google.com/group/comp.programming.threads/browse_frm/thread/0ff7ac10adadee22

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