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/*
* Copyright (C) 2015 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 "scoped_gc_critical_section.h"
#include "gc/collector_type.h"
#include "gc/heap.h"
#include "runtime.h"
#include "thread-current-inl.h"
namespace art {
namespace gc {
const char* GCCriticalSection::Enter(GcCause cause, CollectorType type) {
Runtime::Current()->GetHeap()->StartGC(self_, cause, type);
if (self_ != nullptr) {
return self_->StartAssertNoThreadSuspension(section_name_);
} else {
// Workaround to avoid having to mark the whole function as NO_THREAD_SAFETY_ANALYSIS.
auto kludge = []() ACQUIRE(Roles::uninterruptible_) NO_THREAD_SAFETY_ANALYSIS {};
kludge();
return nullptr;
}
}
void GCCriticalSection::Exit(const char* old_cause) {
if (self_ != nullptr) {
self_->EndAssertNoThreadSuspension(old_cause);
} else {
// Workaround to avoid having to mark the whole function as NO_THREAD_SAFETY_ANALYSIS.
auto kludge = []() RELEASE(Roles::uninterruptible_) NO_THREAD_SAFETY_ANALYSIS {};
kludge();
}
Runtime::Current()->GetHeap()->FinishGC(self_, collector::kGcTypeNone);
}
ScopedGCCriticalSection::ScopedGCCriticalSection(Thread* self,
GcCause cause,
CollectorType collector_type)
: critical_section_(self, "ScopedGCCriticalSection") {
old_no_suspend_reason_ = critical_section_.Enter(cause, collector_type);
}
ScopedGCCriticalSection::~ScopedGCCriticalSection() {
critical_section_.Exit(old_no_suspend_reason_);
}
} // namespace gc
} // namespace art
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