C++封装互斥锁和基于RAII机制能自动解锁的互斥锁

Posted 2021-07-29 奇妙之二进制

#include "base/mutex.h"


Mutex::Mutex() { pthread_mutex_init(&mutex_, NULL); }

Mutex::~Mutex() { pthread_mutex_destroy(&mutex_); }

void Mutex::Lock() { pthread_mutex_lock(&mutex_); }

void Mutex::Unlock() { pthread_mutex_unlock(&mutex_); }

MutexLockGuard::MutexLockGuard(Mutex* mutex) : mutex_(mutex) { mutex_->Lock(); }

MutexLockGuard::~MutexLockGuard() { mutex_->Unlock(); }

#ifndef _MUTEX_H_
#define _MUTEX_H_

#include <pthread.h>

class Mutex {
 public:
  Mutex();
  ~Mutex();

  void Lock();
  void Unlock();

  pthread_mutex_t* Get() { return &mutex_; };

 private:
  pthread_mutex_t mutex_;
};

class MutexLockGuard {
 public:
  MutexLockGuard(Mutex* mutex);
  ~MutexLockGuard();

 private:
  Mutex* mutex_;
};

#endif  //_MUTEX_H_