blob: f22c5dcc1dcdd5ae4e14e947d7f339ab25cb90c4 [file] [log] [blame]
/*
* Copyright (C) 2011 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.
*/
#ifndef ART_SRC_MUTEX_H_
#define ART_SRC_MUTEX_H_
#include <pthread.h>
#include <string>
#include "logging.h"
#include "macros.h"
namespace art {
class Mutex {
public:
explicit Mutex(const char* name);
~Mutex();
void Lock();
bool TryLock();
void Unlock();
const char* GetName() {
return name_.c_str();
}
pthread_mutex_t* GetImpl() {
return &mutex_;
}
void AssertHeld() {
DCHECK_EQ(GetOwner(), GetTid());
}
void AssertNotHeld() {
DCHECK_NE(GetOwner(), GetTid());
}
pid_t GetOwner();
private:
static pid_t GetTid();
void ClearOwner();
std::string name_;
pthread_mutex_t mutex_;
friend class MonitorList; // for ClearOwner
DISALLOW_COPY_AND_ASSIGN(Mutex);
};
class MutexLock {
public:
explicit MutexLock(Mutex& mu) : mu_(mu) {
mu_.Lock();
}
~MutexLock() {
mu_.Unlock();
}
private:
Mutex& mu_;
DISALLOW_COPY_AND_ASSIGN(MutexLock);
};
class ConditionVariable {
public:
explicit ConditionVariable(const std::string& name);
~ConditionVariable();
void Broadcast();
void Signal();
void Wait(Mutex& mutex);
void TimedWait(Mutex& mutex, const timespec& ts);
private:
pthread_cond_t cond_;
std::string name_;
DISALLOW_COPY_AND_ASSIGN(ConditionVariable);
};
} // namespace art
#endif // ART_SRC_MUTEX_H_