C++ 阻塞队列

阻塞队列也是多线程项目中常用的东西，特别适用于生产者/消费者的场景，我这分别用windows api 和 c++11 实现

windows版：

#include <queue>#include <windows.h>using namespace std;template<class T>class BlockingQueue{public:    BlockingQueue(int size):maxSize(size){isAlive = true;     _lock = CreateMutex(NULL,false,NULL);        _rsem = CreateSemaphore(NULL,0,size,NULL);        _wsem = CreateSemaphore(NULL,size,size,NULL);    }~BlockingQueue()     {        CloseHandle(_lock);        CloseHandle(_rsem);        CloseHandle(_wsem);    }void Close()    {isAlive = false;ReleaseMutex(_lock);ReleaseSemaphore(_rsem, 1, NULL);    }    void push(const T& data){if (isAlive) {WaitForSingleObject(_wsem, INFINITE);WaitForSingleObject(_lock, INFINITE);_array.push(data);ReleaseMutex(_lock);ReleaseSemaphore(_rsem, 1, NULL);}    }    T pop(){    WaitForSingleObject(_rsem,INFINITE);    WaitForSingleObject(_lock,INFINITE);if(!isAlive){throw exception();}     T _temp = _array.front();_array.pop();ReleaseMutex(_lock);    ReleaseSemaphore(_wsem,1,NULL);    return _temp;    }int GetLength()    {return _array.size();    }private:    queue<T> _array;    HANDLE _lock;    HANDLE _rsem, _wsem;    int maxSize;bool isAlive;};

c++11

#pragma once#include <mutex>#include <condition_variable>#include <deque>#include <iostream>using namespace std;template <typename T>class BlockingQueue{private:BlockingQueue(const BlockingQueue& rhs);BlockingQueue& operator =(const BlockingQueue& rhs);mutable mutex _mutex;condition_variable _condvar;deque<T> _queue;bool isShutDown = false;public:BlockingQueue(): _mutex()  , _condvar()  , _queue(){}~BlockingQueue(){cout << "blocking queue release" << endl;}void ShutDown(){isShutDown = true;_condvar.notify_all();_queue.clear();}bool IsShutDown(){return isShutDown;}void Put(const T task){lock_guard<mutex> lock(_mutex);if (!isShutDown){{_queue.push_back(task);}_condvar.notify_all();}}T Take(){unique_lock<mutex> lock(_mutex);if(_queue.size()<=0)_condvar.wait(lock);if (isShutDown||_queue.empty()){throw exception();}T front(_queue.front());_queue.pop_front();return front;}size_t Size() const{lock_guard<mutex> lock(_mutex);return _queue.size();}};