inline void decrement_running_counter() {
// now, a bit of care is needed here
size_t r = threads_running.dec();
if (r == 0) {
join_lock.lock();
if (join_waiting) {
join_cond.signal();
}
join_lock.unlock();
}
}
bool try_terminate(size_t cpuid, std::pair<size_t, bool> &job) {
job.second = false;
numactive.dec();
cons.begin_done_critical_section(cpuid);
job = queue.try_dequeue();
if (job.second == false) {
bool ret = cons.end_done_critical_section(cpuid);
numactive.inc();
return ret;
}
else {
cons.cancel_critical_section(cpuid);
numactive.inc();
return false;
}
}
inline void rdunlock(request *I) {
__sync_synchronize();
if (I->next != NULL || !__sync_bool_compare_and_swap(&tail, I, (request*)NULL)) {
while(I->next == NULL) sched_yield();
if (I->s.state.successor_class == QUEUED_RW_LOCK_REQUEST_WRITE) {
next_writer = (request*)(I->next);
__sync_synchronize();
}
}
if (reader_count.dec() == 0) {
__sync_synchronize();
request * w = __sync_lock_test_and_set(&next_writer, (request*)NULL);
if (w != NULL) {
w->s.state.blocked = false;
__sync_synchronize();
}
}
}