bug #37900: Semaphore::wait() gets interrupted on Posix

[pstanczyk]

Bringing over from Savannah:
https://savannah.nongnu.org/bugs/?37900

Tue 11 Dec 2012 01:39:32 PM UTC, original submission:

In ilmbase-1.0.2/IlmThread/IlmThreadSemaphorePosix.cpp, the implementation of Semaphore::wait() does not check for interrupt. As a result, the ThreadPool does not always wait until all threads are finished before deleting the task group, leading to accessing of deleted memory.

The fix is to change Semaphore::wait() from

::sem_wait( &_semaphore );

to

while( ::sem_wait( &_semaphore ) == -1 && errno == EINTR )
{
}

[pstanczyk]

Testing in a local build

[pstanczyk]

Fixed in : cb66c20