自定义c++线程池

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学习c++有一段时间了，打算从string、线程池、网络等方面入手，写一些东西。期间参考了网络上很多书写线程池的blog。以为是很简单的事，真正着手编程调试的时候确遇到了很多的问题。如：

1）两个类的头文件交叉引用，导致编译通不过的问题。解决方案：抽取出父类，通过继承，解决这个问题。

2) new出来的对象在回收的时候，引发的一些异常。

3）如何保证线程在对象销毁之前回收。解决方案：在析构函数中，写一个带睡眠的死循环。直到线程结束后，退出循环。

通过一系列的优化后，将线程池的核心功能都实现了，却发现类分的太细，不利于排查问题，感觉不是最好的实现方案。最后在综合权衡之后，将线程池改造如下。

#pragma once#include<queue>#include<thread>#include<mutex>#include<condition_variable>#include<iostream>using namespace std;class Thread{public:typedef void (*TheadFuncion)();thread* th = nullptr;void* data;TheadFuncion func;bool exit = false;bool isExitSuccess = false;bool idle = true;bool isHasTask = false;void Func(){isExitSuccess = false;while (!exit) {if (isHasTask) {isHasTask = false;this->func();idle = true;}else {chrono::milliseconds(40);}}isExitSuccess = true;}bool Start(Thread::TheadFuncion func){if (!idle) {return false;}idle = false;this->func = func;isHasTask = true;if (nullptr == th) {th = new thread([&]() {Func();});th->detach();}return true;}bool IsIdle() {return idle;}void Stop(){exit = true;while (!isExitSuccess) {chrono::milliseconds(40);}cout << "stop<<" << th << ">>" << endl;delete th;}Thread(){}~Thread(){if (nullptr == th) {exit = true;}else {if (!exit) {Stop();}}}};class ThreadPool1{public:vector<Thread*> threads; typedef std::vector<Thread*>::iterator Iterator; mutex mtx; bool isEnd = false;public:ThreadPool1(int threadCount){for (int i = 0; i < threadCount; i++) {Thread* thread = new Thread();threads.push_back(thread);}}~ThreadPool1() {Iterator iter = threads.begin();while (iter != threads.end()) {if (nullptr != *iter) {delete *iter;}iter++;}isEnd = true;}void start() {}bool Add(Thread::TheadFuncion func){mtx.lock();Iterator iter = threads.begin();bool isAddSuccess = false;while (iter != threads.end()) {if ((*iter) -> IsIdle()) {isAddSuccess = (*iter)->Start(func);if (isAddSuccess) {break;}else {iter++;}}else {iter++;}}mtx.unlock();return isAddSuccess;}};

参考链接:http://www.cnblogs.com/haippy/p/3237213.html

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