个人主页：Lei宝啊 

愿所有美好如期而遇

---

线程池

实现线程类

#pragma once
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include "sem.hpp"
using namespace std;
class Thread
{
    using func_t = function;
public:
    void Excute()
    {
        _func(_threadname);
    }
public:
    Thread(func_t func, const std::string &name="none-name")
        : _func(func), _threadname(name), _stop(true)
    {}
    static void *threadroutine(void *args) // 类成员函数，形参是有this指针的！！
    {
        Thread *self = static_cast(args);
        self->Excute();
        return nullptr;
    }
    bool Start()
    {
        int n = pthread_create(&_tid, nullptr, threadroutine, this);
        if(!n)
        {
            _stop = false;
            return true;
        }
        else
        {
            return false;
        }
    }
    void Detach()
    {
        if(!_stop)
        {
            pthread_detach(_tid);
        }
    }
    void Join()
    {
        if(!_stop)
        {
            pthread_join(_tid, nullptr);
        }
    }
    std::string name()
    {
        return _threadname;
    }
    void Stop()
    {
        _stop = true;
    }
    ~Thread() {}
private:
    pthread_t _tid;
    std::string _threadname;
    func_t _func;
    bool _stop;
};

任务类

这个就随便写了，用来简单测试。

#include 
using namespace std;
class Task
{
public:
    void Compare()
    {
        cout << "compare" << endl;
    }
    void operator()()
    {
        Compare();
    }
int a = 1;
int b = 2;
};

线程池类

#include "Thread_pool.hpp"
#include 
const int g_pthreadnum = 6;
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
//线程池
template
class ThreadPool
{
public:
    ThreadPool(int num = g_pthreadnum)
        :pthreadnum(num)
        ,state(false)
        ,waitnum(0)
    {}
    void Everydo(string name)
    {
        while(true)
        {
            Lock();
            while(qtask.empty() && state)
            {
                waitnum++;
                Wait_Pthread();
                waitnum--;
            }
            if(qtask.empty() && !state)
            {
                UnLock();
                cout << name << ": quit" << endl;
                break;
            }
            T task = qtask.front();
            qtask.pop();
            task();
            UnLock();
        }
    }
    bool Push(const T& t)
    {
        Lock();
        bool ret = false;
        if(state)
        {
            qtask.push(t);
            if(waitnum > 0) WakeUp_sigle();
            ret = true;
        }
        UnLock();
        return ret;
    }
    void ThreadInit()
    {
        for(int i=0; i vthread;
    //一个任务队列,创建线程池对象时，线程创建好，我们需要从外部接收任务分配给线程执行
    //我们希望能够接收任意类型的任务，仿函数，函数，lambda表达式等，所以使用模板
    queue qtask;
    //一个状态，控制线程池的退出
    bool state;
    int waitnum;
    void Lock()
    {
        pthread_mutex_lock(&mutex);
    }
    void UnLock()
    {
        pthread_mutex_unlock(&mutex);
    }
    void WakeUp_sigle()
    {
        pthread_cond_signal(&cond);
    }
    void WakeUp_All()
    {
        pthread_cond_broadcast(&cond);
    }
    void Wait_Pthread()
    {
        pthread_cond_wait(&cond, &mutex);
    }
};

测试