1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef ECMASCRIPT_VM_THREAD_CONTROL_H 17 #define ECMASCRIPT_VM_THREAD_CONTROL_H 18 19 #include "ecmascript/js_thread.h" 20 #include "ecmascript/platform/mutex.h" 21 #include "libpandabase/utils/bit_field.h" 22 23 namespace panda::ecmascript { 24 class VmThreadControl { 25 public: 26 static constexpr char VM_NEED_SUSPENSION = 1; 27 VmThreadControl(JSThread * thread)28 VmThreadControl(JSThread *thread) 29 { 30 thread_ = thread; 31 } 32 33 void SetVMNeedSuspension(bool flag); 34 35 void SetTerminationRequest(bool flag); 36 37 bool VMNeedSuspension() const; 38 39 void SuspendVM(); 40 41 void ResumeVM(); 42 43 bool NotifyVMThreadSuspension(); 44 45 void RequestTerminateExecution(); 46 47 void SetVMSuspended(bool flag); 48 49 bool IsSuspended() const; 50 51 private: 52 JSThread *thread_; 53 Mutex vmThreadSuspensionMutex_; 54 ConditionVariable vmThreadNeedSuspensionCV_; 55 ConditionVariable vmThreadHasSuspendedCV_; 56 }; 57 } // namespace panda::ecmascript 58 #endif // ECMASCRIPT_VM_THREAD_CONTROL_H