Hi Robert, Ok in my game when i load a ressource i do it in a thread. I dont allocate a thread pool. i just create one thread per load sequence. For example when i create a player i craete one thread with a list of files to load. During the game a player can arrive and leave. So there will be a lot of thread creation and destruction when the game run a long time. It's a simplified view but it's the idea.
Without my modification in my code when i created a thread load data and delete it. The thread resource was not clear, it's still valid even if finish. So after one day of game running i had 3Gb of finished thread and deleted but without ressources released. http://www.kernel.org/doc/man-pages/online/pages/man3/pthread_detach.3.html http://www.kernel.org/doc/man-pages/online/pages/man3/pthread_join.3.html I tested two behaviours with join and detach. Both work: If i call detach after the creation of my thread the resources are released when deleted. And if i call join when the thread is finish the resources are also released. http://www.kernel.org/doc/man-pages/online/pages/man3/pthread_create.3.html in the notes section they explain the stuff about the resources. I give pointer to doc only because it explains better than i could, I think you already know those doc. to do the test do something like that: int main(int argc, char** argv) { { create 200 threads run them when all are finished delete them } sleep( 1000); // check your system memory and virtual memory return 0 } I am not sure if we need to fix this inside osg, i mean calling detach do what is expected. Just user must be aware about this behaviour. I hope i explained correctly Cheers, Cedric -- +33 659 598 614 Cedric Pinson mailto:[email protected] http://www.plopbyte.net On Mon, 2009-11-30 at 10:47 +0000, Robert Osfield wrote: > HI Cedric, > > On Sun, Nov 29, 2009 at 11:02 PM, Cedric Pinson > <[email protected]> wrote: > > Ok reading the code and the doc of pthread, in order to have the > > ressource freed at the end of the thread, i must call detach(). now i > > have my memory back > > > > maybe it could help for others that create thread in application on a > > long period > > Could you explain a bit more how you are using threads/how you are > finishing them/destructing. > > Is there something missing from OpenThreads Thread destruction? > > Robert. >
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