linux对于互斥器的封装_linux对一些工具做封装-优快云博客

本文链接：https://blog.youkuaiyun.com/u011915028/article/details/53121041

本文介绍了一个Mutex锁的封装实现，包括MutexLock和MutexLockGuard两个类，并通过一个多线程环境下的实例展示了如何使用这些类来确保线程安全。

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对于mutex封装的头文件Mutex.h为

#ifndef __MUTEX__
#define __MUTEX__
/*
define two class MutexLock and MutexLockGuard
*/
#include<pthread.h>
class MutexLock
{
private:
	pthread_mutex_t mutex_;
public:
	MutexLock(){
	pthread_mutex_init(&mutex_,NULL);
}
	~MutexLock(){
	pthread_mutex_destroy(&mutex_);
}
	void lock(){
	pthread_mutex_lock(&mutex_);
}
	void unlock(){
	pthread_mutex_unlock(&mutex_);
}
	pthread_mutex_t*	getPthreadMutex(){
	return &mutex_;
}
};
class MutexLockGuard{
private:
	MutexLock &mutex;
public:
	explicit MutexLockGuard(MutexLock& mutex_):mutex(mutex_){
	mutex.lock();
}
	~MutexLockGuard(){
	mutex.unlock();
}

};
#endif

对于封装的类的测试为

#include<thread>
#include"../Mutex.h"
#include<iostream>
#include<vector>
using namespace std;
int i=0;
MutexLock mutex;
void threadFunc(){
	MutexLockGuard t(mutex);
	for(int j=0;j<10;++j){
	++i;
	cout<<i<<endl;
}

}
int main(){
vector<thread> v;
for(int j=0;j<10;++j){
	v.push_back(thread(threadFunc));
}
//thread t1(threadFunc);
//thread t2(threadFunc);
for(int j=0;j<10;++j){
	v[j].join();
}
//t1.join();
//t2.join();
return 0;
}