Loïc Le Cunff писал 2014-09-28 05:06:
> Greetings,
>
> This is an issue that I've had for a while actually as I had it in
> TDM-GCC one year ago.
>
> Now, since TDM-GCC appears to be based on MinGW-w64's winpthread, I
> tried going back to the source hoping for a fix, and so I installed
> MinGW-w64 based on gcc 4.9.1 for x86_64, using posix threads, build
> revision 1.
>
> Basically, it appears there's a memory leak when std::threads are
> either
> created, joined or destructed, and so a simple testcase like
> __________________________________
>
> #include <iostream>
> #include <thread>
>
> void tmp_thr(double a) { std::cout<<a<<std::endl; }
>
> int main()
> {
> int j;
>
> for(j=0;j<800000;j++)
> {
> std::thread tEx(tmp_thr,j);
> tEx.join();
> }
> }
>
> __________________________________
>
> makes the memory usage (as seen in the task manager) grow until either
> the program ends, or crashes. The leak appears to be fairly small,
> about
> 130 bytes of memory per thread so unless someone spawns millions of
> them
> (like I do) it won't be felt.
>
> I've been advised on the IRC channel to send this to the mailing list
> so
> here am I.
> Is there something incredibly wrong in this testcase or is there an
> issue with the compiler?
Hi,
Yes, I confirm the memory leak.
I try to understand the reasons...
--
Regards, niXman
___________________________________________________
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http://sourceforge.net/projects/mingw-w64/
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