bool VM::wakeup(STATE) {
utilities::thread::SpinLock::LockGuard guard(interrupt_lock_);
set_check_local_interrupts();
Object* wait = waiting_object_.get();
if(park_->parked_p()) {
park_->unpark();
return true;
} else if(interrupt_with_signal_) {
#ifdef RBX_WINDOWS
// TODO: wake up the thread
#else
pthread_kill(os_thread_, SIGVTALRM);
#endif
interrupt_lock_.unlock();
// Wakeup any locks hanging around with contention
memory()->release_contention(state);
return true;
} else if(!wait->nil_p()) {
// We shouldn't hold the VM lock and the IH lock at the same time,
// other threads can grab them and deadlock.
InflatedHeader* ih = wait->inflated_header(state);
interrupt_lock_.unlock();
ih->wakeup(state, wait);
return true;
} else {
Channel* chan = waiting_channel_.get();
if(!chan->nil_p()) {
interrupt_lock_.unlock();
memory()->release_contention(state);
chan->send(state, cNil);
return true;
} else if(custom_wakeup_) {
interrupt_lock_.unlock();
memory()->release_contention(state);
(*custom_wakeup_)(custom_wakeup_data_);
return true;
}
return false;
}
}
bool VM::wakeup(STATE, GCToken gct, CallFrame* call_frame) {
SYNC(state);
set_check_local_interrupts();
Object* wait = waiting_object_.get();
if(park_->parked_p()) {
park_->unpark();
return true;
} else if(vm_jit_.interrupt_with_signal_) {
#ifdef RBX_WINDOWS
// TODO: wake up the thread
#else
pthread_kill(os_thread_, SIGVTALRM);
#endif
UNSYNC;
// Wakeup any locks hanging around with contention
om->release_contention(state, gct, call_frame);
return true;
} else if(!wait->nil_p()) {
// We shouldn't hold the VM lock and the IH lock at the same time,
// other threads can grab them and deadlock.
InflatedHeader* ih = wait->inflated_header(state);
UNSYNC;
ih->wakeup(state, gct, call_frame, wait);
return true;
} else {
Channel* chan = waiting_channel_.get();
if(!chan->nil_p()) {
UNSYNC;
om->release_contention(state, gct, call_frame);
chan->send(state, gct, cNil, call_frame);
return true;
} else if(custom_wakeup_) {
UNSYNC;
om->release_contention(state, gct, call_frame);
(*custom_wakeup_)(custom_wakeup_data_);
return true;
}
return false;
}
}
