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comparison src/os/windows/vm/os_windows.cpp @ 14704:b51e29501f30

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Merged with jdk9/dev/hotspot changeset 9486a41de3b7
author twisti
date Tue, 18 Mar 2014 20:19:10 -0700
parents d8041d695d19 f6301b007a16
children 92aa6797d639
comparison
equal deleted inserted replaced
14647:8f483e200405 14704:b51e29501f30
3630 bool os::is_interrupted(Thread* thread, bool clear_interrupted) { 3630 bool os::is_interrupted(Thread* thread, bool clear_interrupted) {
3631 assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(), 3631 assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(),
3632 "possibility of dangling Thread pointer"); 3632 "possibility of dangling Thread pointer");
3633 3633
3634 OSThread* osthread = thread->osthread(); 3634 OSThread* osthread = thread->osthread();
3635 bool interrupted = osthread->interrupted();
3636 // There is no synchronization between the setting of the interrupt 3635 // There is no synchronization between the setting of the interrupt
3637 // and it being cleared here. It is critical - see 6535709 - that 3636 // and it being cleared here. It is critical - see 6535709 - that
3638 // we only clear the interrupt state, and reset the interrupt event, 3637 // we only clear the interrupt state, and reset the interrupt event,
3639 // if we are going to report that we were indeed interrupted - else 3638 // if we are going to report that we were indeed interrupted - else
3640 // an interrupt can be "lost", leading to spurious wakeups or lost wakeups 3639 // an interrupt can be "lost", leading to spurious wakeups or lost wakeups
3641 // depending on the timing 3640 // depending on the timing. By checking thread interrupt event to see
3641 // if the thread gets real interrupt thus prevent spurious wakeup.
3642 bool interrupted = osthread->interrupted() && (WaitForSingleObject(osthread->interrupt_event(), 0) == WAIT_OBJECT_0);
3642 if (interrupted && clear_interrupted) { 3643 if (interrupted && clear_interrupted) {
3643 osthread->set_interrupted(false); 3644 osthread->set_interrupted(false);
3644 ResetEvent(osthread->interrupt_event()); 3645 ResetEvent(osthread->interrupt_event());
3645 } // Otherwise leave the interrupted state alone 3646 } // Otherwise leave the interrupted state alone
3646 3647