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8047290: Make Mutex::_no_safepoint_check_flag locks verify that this lock never checks for safepoint

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Ensure consistent safepoint checking in Mutex/Monitor locking methods.

Reviewed-by: dholmes, dcubed, coleenp
This commit is contained in:
Max Ockner 2014-12-11 21:34:43 -05:00 • committed by Coleen Phillimore
parent bb30bd7e0a
commit 1d76295d70
32 changed files with 447 additions and 134 deletions
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6
hotspot/src/share/vm/gc_implementation/parallelScavenge/gcTaskManager.cpp
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@ -400,7 +400,8 @@ void GCTaskManager::initialize() {
assert(workers() != 0, "no workers");
_monitor = new Monitor(Mutex::barrier, // rank
"GCTaskManager monitor", // name
Mutex::_allow_vm_block_flag); // allow_vm_block
Mutex::_allow_vm_block_flag, // allow_vm_block
Monitor::_safepoint_check_never);
// The queue for the GCTaskManager must be a CHeapObj.
GCTaskQueue* unsynchronized_queue = GCTaskQueue::create_on_c_heap();
_queue = SynchronizedGCTaskQueue::create(unsynchronized_queue, lock());
@ -1125,7 +1126,8 @@ Monitor* MonitorSupply::reserve() {
} else {
result = new Monitor(Mutex::barrier, // rank
"MonitorSupply monitor", // name
Mutex::_allow_vm_block_flag); // allow_vm_block
Mutex::_allow_vm_block_flag, // allow_vm_block
Monitor::_safepoint_check_never);
}
guarantee(result != NULL, "shouldn't return NULL");
assert(!result->is_locked(), "shouldn't be locked");