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RAII手法封装互斥锁

2024-07-27 11:59:11   217人阅读

RAII手法是 Resource Acquisition is Initialization 的缩写，意为“资源获取即初始化”，在使用智能指针时也使用，下面是针对互斥量时的实现，

 1 #include <iostream> 2 #include <pthread.h> 3  4 using namespace std; 5  6 class MutexLock 7 { 8 public: 9     MutexLock()10     {11         pthread_mutex_init(&mutex_, NULL);12     }13 14     ~MutexLock()15     {16         pthread_mutex_destroy(&mutex_);17     }18 19     void Lock()20     {21         pthread_mutex_lock(&mutex_);22     }23 24     void Unlock()25     {26         pthread_mutex_unlock(&mutex_);27     }28 29 private:30     MutexLock(const MutexLock&);31     MutexLock& operator=(const MutexLock&);32     pthread_mutex_t mutex_;33 };34 35 class MutexLockGuard36 {37 public:38     explicit MutexLockGuard(MutexLock& mutex): mutex_(mutex)39     {40         mutex_.Lock();41     }42 43     ~MutexLockGuard()44     {45         mutex_.Unlock();46     }47 48 private:49     MutexLockGuard(const MutexLockGuard&);50     MutexLockGuard& operator=(const MutexLockGuard&);51 52     MutexLock& mutex_;53 };54 55 class Foo56 {57 public:58     void print()59     {60         MutexLockGuard lock(mutex_);61         cout << "Hello" << endl;62     }63 64 private:65     MutexLock mutex_;    66 };

 

RAII手法封装互斥锁


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