bool DirtyCardQueueSet::mut_process_buffer(void** buf) {
// Used to determine if we had already claimed a par_id
// before entering this method.
bool already_claimed = false;
// We grab the current JavaThread.
JavaThread* thread = JavaThread::current();
// We get the the number of any par_id that this thread
// might have already claimed.
int worker_i = thread->get_claimed_par_id();
// If worker_i is not -1 then the thread has already claimed
// a par_id. We make note of it using the already_claimed value
if (worker_i != -1) {
already_claimed = true;
} else {
// Otherwise we need to claim a par id
worker_i = _free_ids->claim_par_id();
// And store the par_id value in the thread
thread->set_claimed_par_id(worker_i);
}
bool b = false;
if (worker_i != -1) {
b = DirtyCardQueue::apply_closure_to_buffer(_closure, buf, 0,
_sz, true, worker_i);
if (b) Atomic::inc(&_processed_buffers_mut);
// If we had not claimed an id before entering the method
// then we must release the id.
if (!already_claimed) {
// we release the id
_free_ids->release_par_id(worker_i);
// and set the claimed_id in the thread to -1
thread->set_claimed_par_id(-1);
}
}
return b;
}
