--- a/hotspot/src/share/vm/runtime/task.cpp Fri Jun 07 09:33:01 2013 -0700
+++ b/hotspot/src/share/vm/runtime/task.cpp Mon Jun 10 11:30:51 2013 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -114,9 +114,11 @@
disenroll();
}
+/* enroll could be called from a JavaThread, so we have to check for
+ * safepoint when taking the lock to avoid deadlocking */
void PeriodicTask::enroll() {
MutexLockerEx ml(PeriodicTask_lock->owned_by_self() ?
- NULL : PeriodicTask_lock, Mutex::_no_safepoint_check_flag);
+ NULL : PeriodicTask_lock);
if (_num_tasks == PeriodicTask::max_tasks) {
fatal("Overflow in PeriodicTask table");
@@ -131,9 +133,11 @@
}
}
+/* disenroll could be called from a JavaThread, so we have to check for
+ * safepoint when taking the lock to avoid deadlocking */
void PeriodicTask::disenroll() {
MutexLockerEx ml(PeriodicTask_lock->owned_by_self() ?
- NULL : PeriodicTask_lock, Mutex::_no_safepoint_check_flag);
+ NULL : PeriodicTask_lock);
int index;
for(index = 0; index < _num_tasks && _tasks[index] != this; index++)