Mail Archives: cygwin/2008/10/07/19:30:40
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 = ¬hing;
> 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.
cgf
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