/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "scoped_gc_critical_section.h"
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#include "gc/collector_type.h"
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#include "gc/heap.h"
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#include "runtime.h"
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#include "thread-current-inl.h"
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namespace art {
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namespace gc {
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const char* GCCriticalSection::Enter(GcCause cause, CollectorType type) {
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Runtime::Current()->GetHeap()->StartGC(self_, cause, type);
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if (self_ != nullptr) {
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return self_->StartAssertNoThreadSuspension(section_name_);
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} else {
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// Workaround to avoid having to mark the whole function as NO_THREAD_SAFETY_ANALYSIS.
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auto kludge = []() ACQUIRE(Roles::uninterruptible_) NO_THREAD_SAFETY_ANALYSIS {};
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kludge();
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return nullptr;
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}
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}
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void GCCriticalSection::Exit(const char* old_cause) {
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if (self_ != nullptr) {
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self_->EndAssertNoThreadSuspension(old_cause);
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} else {
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// Workaround to avoid having to mark the whole function as NO_THREAD_SAFETY_ANALYSIS.
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auto kludge = []() RELEASE(Roles::uninterruptible_) NO_THREAD_SAFETY_ANALYSIS {};
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kludge();
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}
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Runtime::Current()->GetHeap()->FinishGC(self_, collector::kGcTypeNone);
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}
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ScopedGCCriticalSection::ScopedGCCriticalSection(Thread* self,
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GcCause cause,
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CollectorType collector_type)
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: critical_section_(self, "ScopedGCCriticalSection") {
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old_no_suspend_reason_ = critical_section_.Enter(cause, collector_type);
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}
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ScopedGCCriticalSection::~ScopedGCCriticalSection() {
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critical_section_.Exit(old_no_suspend_reason_);
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}
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} // namespace gc
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} // namespace art
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