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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "callee_save_frame.h"
#include "common_throws.h"
#include "mirror/object-inl.h"
namespace art {
extern "C" int artLockObjectFromCode(mirror::Object* obj, Thread* self, mirror::ArtMethod** sp)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)
NO_THREAD_SAFETY_ANALYSIS /* EXCLUSIVE_LOCK_FUNCTION(Monitor::monitor_lock_) */ {
FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly);
if (UNLIKELY(obj == NULL)) {
ThrowLocation throw_location(self->GetCurrentLocationForThrow());
ThrowNullPointerException(&throw_location,
"Null reference used for synchronization (monitor-enter)");
return -1; // Failure.
} else {
if (kIsDebugBuild) {
obj = obj->MonitorEnter(self); // May block
CHECK(self->HoldsLock(obj));
CHECK(!self->IsExceptionPending());
} else {
obj->MonitorEnter(self); // May block
}
return 0; // Success.
// Only possible exception is NPE and is handled before entry
}
}
extern "C" int artUnlockObjectFromCode(mirror::Object* obj, Thread* self, mirror::ArtMethod** sp)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)
NO_THREAD_SAFETY_ANALYSIS /* UNLOCK_FUNCTION(Monitor::monitor_lock_) */ {
FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly);
if (UNLIKELY(obj == NULL)) {
ThrowLocation throw_location(self->GetCurrentLocationForThrow());
ThrowNullPointerException(&throw_location,
"Null reference used for synchronization (monitor-exit)");
return -1; // Failure.
} else {
// MonitorExit may throw exception.
return obj->MonitorExit(self) ? 0 /* Success */ : -1 /* Failure */;
}
}
} // namespace art
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