1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ART_RUNTIME_GC_SCOPED_GC_CRITICAL_SECTION_H_ 18 #define ART_RUNTIME_GC_SCOPED_GC_CRITICAL_SECTION_H_ 19 20 #include "base/mutex.h" 21 #include "collector_type.h" 22 #include "gc_cause.h" 23 24 namespace art { 25 26 class Thread; 27 28 namespace gc { 29 30 // Wait until the GC is finished and then prevent GC from starting until the destructor. Used 31 // to prevent deadlocks in places where we call ClassLinker::VisitClass with all th threads 32 // suspended. 33 class ScopedGCCriticalSection { 34 public: 35 ScopedGCCriticalSection(Thread* self, GcCause cause, CollectorType collector_type) 36 ACQUIRE(Roles::uninterruptible_); 37 ~ScopedGCCriticalSection() RELEASE(Roles::uninterruptible_); 38 39 private: 40 Thread* const self_; 41 const char* old_cause_; 42 }; 43 44 } // namespace gc 45 } // namespace art 46 47 #endif // ART_RUNTIME_GC_SCOPED_GC_CRITICAL_SECTION_H_ 48