Anthony Williams wrote: [...]
// Any APC will break the sleep, so keep sleeping until we've been // notified, or we've timed out while(!atomic_read(new_node.notified) && SleepEx(milliseconds_until(timeout), true)==WAIT_IO_COMPLETION);
lock(gate)
(generally, access *this after waiting without any sync with dtor) The gate being just a mutex (in 8a the gate is a semaphore unlocked/posted by last exiting waiter in the case of no-NOP signaling). You've got a problem here regarding POSIX safety with respect to CV destruction. POSIX says that it "shall be safe to destroy an initialized condition variable upon which no threads are currently blocked" and even gives an example illustrating it using broadcast() followed by destroy(). 8a handles it by synchronizing with exiting waiters on a gate semaphore in CV dtor. regards, alexander.