Thread causing memory leaks...

Thread causing memory leaks...

[Mehmet Tek]

Hi all,

After debugging for a number of hours, I found out that the very basics of my 
thread usage is causing memory leaks. (I checked it with mtrace and valgrind, 
they both say that there is memory leak.)

I have a very simple program below that leaks memory. Can anyone tell me if I 
am doing sth wrong, or is it actually some bug in the native thread 
implementation?

Any feedback would be appreciated...

Thanks,
Mehmet

PS: I am using Linux 2.4.21 (SuSE 9.0) with gcc 3.3.1 on a AMD64 machine.

===========================================================================

#include <iostream>
#include <pthread.h>
#include <mcheck.h>

using namespace std;

void *thFunction(void *arg) {

  cout << " Thread started"  << endl;

  cout << " Thread ending"  << endl;

  return NULL;

}

int main() {

  pthread_t  th;

  //  mtrace();

  cout << " Spawning the thread" << endl;

  pthread_create(&th, NULL, thFunction, NULL);

  pthread_join(th, NULL);

  //  muntrace();

  return 0;
}

Re: Thread causing memory leaks...

[Jean-Philippe Andriot]

Hi

You should use "pthread_exit" instead of "return NULL"

JP


Mehmet Tek wrote:

>Hi all,
>
>After debugging for a number of hours, I found out that the very basics of my 
>thread usage is causing memory leaks. (I checked it with mtrace and valgrind, 
>they both say that there is memory leak.)
>
>I have a very simple program below that leaks memory. Can anyone tell me if I 
>am doing sth wrong, or is it actually some bug in the native thread 
>implementation?
>
>Any feedback would be appreciated...
>
>Thanks,
>Mehmet
>
>PS: I am using Linux 2.4.21 (SuSE 9.0) with gcc 3.3.1 on a AMD64 machine.
>
>===========================================================================
>
>#include <iostream>
>#include <pthread.h>
>#include <mcheck.h>
>
>using namespace std;
>
>void *thFunction(void *arg) {
>
>  cout << " Thread started"  << endl;
>
>  cout << " Thread ending"  << endl;
>
>  return NULL;
>
>}
>
>int main() {
>
>  pthread_t  th;
>
>  //  mtrace();
>
>  cout << " Spawning the thread" << endl;
>
>  pthread_create(&th, NULL, thFunction, NULL);
>
>  pthread_join(th, NULL);
>
>  //  muntrace();
>
>  return 0;
>}
>
>
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>
>
>  
>