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Date: Wed, 08 Oct 2008 02:45:55 +0200
From: Bob van Loosen <loosen AT xs4all DOT nl>
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To: cygwin AT cygwin DOT com
Subject: Re: Memory leak with timer
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Christopher Faylor wrote:
> On Wed, Oct 08, 2008 at 12:08:52AM +0200, Bob van Loosen wrote:
>   
>> Hi all,
>>
>> When using a timer I seem to be getting a memory leak.
>> It eats up about 8 kilobyte per second.
>>
>> Here's some example code:
>>
>> #include <stdio.h>
>> #include <pthread.h>
>> #include <signal.h>
>> #include <stdlib.h>
>> #include <unistd.h>
>>
>> void nothing(){}
>> void Die(char *error){perror(error); exit(1);}
>>
>> int main()
>> {
>>    struct itimerspec itimer;
>>    struct sigevent sigev;
>>    timer_t timer;
>>    int interval = 16000;
>>      itimer.it_interval.tv_sec = interval / 1000000;
>>    itimer.it_interval.tv_nsec = (interval % 1000000) * 1000;
>>    itimer.it_value.tv_sec = interval / 1000000;
>>    itimer.it_value.tv_nsec = (interval % 1000000) * 1000;
>>      sigev.sigev_notify = SIGEV_THREAD;
>>    sigev.sigev_notify_attributes = 0;
>>    sigev.sigev_notify_function = &nothing;
>>      if (timer_create (CLOCK_REALTIME, &sigev, &timer) < 0)
>>        Die("timer_create");
>>
>>    if (timer_settime(timer, 0, &itimer, NULL) < 0)
>>        Die("timer_settime");        while(1) sleep(1);
>> }
>>     
>
> This should be fixed in the next snapshot.  If you are looking for a
> workaround, specifically set the sigev_notify_attributes to
> PTHREAD_CREATE_DETACHED.
>
>
>   

Thanks, that fixed it.
Shouldn't PTHREAD_CREATE_DETACHED be default? That's what the 
opengroup.org site says.

Bob.

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