STMF_WORKER_ACTIVE
(worker.worker_flags & STMF_WORKER_ACTIVE) ?
w->worker_flags |= STMF_WORKER_STARTED | STMF_WORKER_ACTIVE;
STMF_WORKER_ACTIVE | STMF_WORKER_TERMINATE);
w->worker_flags &= ~STMF_WORKER_ACTIVE;
w->worker_flags |= STMF_WORKER_ACTIVE;
if ((w->worker_flags & STMF_WORKER_ACTIVE) == 0) \