Initiate the pausing of this queue, prevent jobs from being executed on this queue (excluding the currently-executing job - or batch of jobs - if there is one), and prevent the queue from being deleted. Return 0 on success, and a non-zero value if the queue is already paused or is being paused or deleted by another thread. The behavior is undefined unless, after a successful invocation of initiatePause, waitWhilePausing is invoked (to complete the pause operation and allow the queue to, potentially, be deleted).
Declared in <bdlmt_multiqueuethreadpool.h>
int
initiatePause();