Re: [boost] thread yield

From: Peter Petrov (ppetrov_at_[hidden])
Date: 2005-09-23 19:52:48

Jason Hise wrote:

> Alright, I will add some more context to the discussion.  This is being 
> used for a 'timeout lifetime' for the singleton library.  The idea is 
> that a singleton which is cheap to create but expensive to hold on to 
> could automatically be destroyed if it goes unused a certain amount of 
> time, and be recreated the next time it is needed.  To implement this 
> idea I create a timeout thread when the instance is created, and force 
> that thread to sleep until the timeout time is reached.  If at that 
> point the timeout time has been extended, the thread sleeps again, 
> otherwise it destroys the instance and exits.
> 
> The problem is that if the process is exiting I would like to force the 
> thread to wake up and time out early to ensure that the singleton get 
> destroyed.

Instead of sleeping, use timed_wait on a condition variable. Upon 
awakening, check the cause (which could be timeout, valid signal, or 
spurious wakeup).