1 /* 2 * Copyright (C) 2011 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 FRAMEWORKS_EX_VARIABLESPEED_JNI_NO_SYNCHRONIZATION_H_ 18 #define FRAMEWORKS_EX_VARIABLESPEED_JNI_NO_SYNCHRONIZATION_H_ 19 20 #include <macros.h> 21 22 // We don't need any synchronization at the moment. 23 // The sola_time_scaler (which is the code that uses this mutex class) is 24 // currently being used in a single-threaded manner, driven from the main 25 // PlayFromThisSource method in variablespeed. 26 // As such no locking is actually required, and so this class contains a 27 // fake mutex that does nothing. 28 29 class Mutex { 30 public: 31 Mutex() {} 32 virtual ~Mutex() {} 33 void Lock() {} 34 void Unlock() {} 35 36 private: 37 DISALLOW_COPY_AND_ASSIGN(Mutex); 38 }; 39 40 class MutexLock { 41 public: 42 explicit MutexLock(Mutex* mu) : mu_(mu) {} 43 virtual ~MutexLock() {} 44 45 private: 46 Mutex* const mu_; 47 DISALLOW_COPY_AND_ASSIGN(MutexLock); 48 }; 49 50 #endif // FRAMEWORKS_EX_VARIABLESPEED_JNI_NO_SYNCHRONIZATION_H_ 51
