Re: [Boost-users] Does boost::thread_group::create_threadhave memory leak?

From: pete_at_[hidden]
Date: 2007-01-21 19:36:25

On Sun, Jan 21, 2007 at 07:17:42PM +0100, Roland Schwarz wrote:
> You might try the below code snippet, which gives me the same valgrind 
> report than the example using Boost.Thread:
> 
> #include <pthread.h>
> 
> void* fn(void* p)
> {
>     return NULL;
> }
> 
> int main()
> {
>     pthread_t th;
>     pthread_create(&th, NULL, fn, NULL);
>     pthread_join(th, NULL);
>     return 0;
> }
> 

I noticed with the straight pthread code that if I compiled it as ANSI
C, the leak was smaller.  It sure seems like this should be a well known
issue.

Here is the ANSI C (gcc) valgrind report:

==5584== LEAK SUMMARY:
==5584==    definitely lost: 0 bytes in 0 blocks.
==5584==      possibly lost: 136 bytes in 1 blocks.
==5584==    still reachable: 0 bytes in 0 blocks.
==5584==         suppressed: 0 bytes in 0 blocks.

Here is the same code but compiled with C++ (g++):

==5568== LEAK SUMMARY:
==5568==    definitely lost: 0 bytes in 0 blocks.
==5568==      possibly lost: 144 bytes in 1 blocks.
==5568==    still reachable: 0 bytes in 0 blocks.

Thanks, I guess it's not a boost issue at all.

Pete

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