Re: Memory leak with timer

[Bob van Loosen]

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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