Re: [Boost-users] at_thread_exit() never getting called

9 Nov 2009

      Peter Dimov-5 wrote:
...
cowwoc wrote:
...
Peter Dimov-5 wrote:
...
cowwoc wrote:
...
One of my threads has the following logic:
{
 at_thread_exit(myHook);
 while (!shutdownRequested)
 {
   // do stuff
 }
}
myHook()
{
 shutdownRequested = true;
}
Following your scenario, doesn't this mean that the shutdown
hook will never get executed? What will happen? Will exit() hang
forever?
It will never get executed. The hook is executed AFTER the thread
exits.
So how do you propose I implement the use-case I mentioned?
This way:
void threadproc()
{
    while( !shutdownRequested ) { ... }
}
void signal_thread_to_exit_and_wait()
{
    shutdownRequested = true;
    // join thread
}
int main()
{
    // start thread
    atexit( signal_thread_to_exit_and_wait );
    // ...
} // exit( 0 ) happens here
That's exactly what I wanted. Thanks Peter!

PS: Is there a more reliable mechanism than atexit() that is guaranteed to
support more than 32 hooks?

Thanks,
Gili
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