一个线程池的设计需要的几个东西:
线程池管理器:负责线程池的创建,管理和维护,线程池的终止。
工作线程:实际就是线程接口和线程管理的
任务队列:用于存储需要执行的任务,实际是一个列表
线程接口:一个线程函数的实现(在此为,还不知道还有没有一个更好的实现)
任务接口:需要使用线程池的中的线程处理的任务都需要继承于此接口。
一个简单的逻辑就是:
工作线程,线程接口
任务接口和线程函数:
#ifndef __THREAD_H__
#define __THREAD_H__
#include <string>
#include <windows.h>
#include <process.h>
class Runnable
{
public:
virtual ~Runnable() {};
virtual void Run() = 0;
};
class CThread : public Runnable
{
private:
explicit CThread(const CThread & rhs);
public:
CThread();
CThread(Runnable * pRunnable);
CThread(const char * ThreadName, Runnable * pRunnable = NULL);
CThread(std::string ThreadName, Runnable * pRunnable = NULL);
~CThread(void);
/**
开始运行线程
@arg bSuspend 开始运行时是否挂起
**/
bool Start(bool bSuspend = false);
/**
运行的线程函数,可以使用派生类重写此函数
**/
virtual void Run();
/**
当前执行此函数线程等待线程结束
@arg timeout 等待超时时间,如果为负数,等待无限时长
**/
void Join(int timeout = -1);
/**
恢复挂起的线程
**/
void Resume();
/**
挂起线程
**/
void Suspend();
/**
终止线程的执行
**/
bool Terminate(unsigned long ExitCode);
unsigned int GetThreadID();
std::string GetThreadName();
void SetThreadName(std::string ThreadName);
void SetThreadName(const char * ThreadName);
private:
static unsigned int WINAPI StaticThreadFunc(void * arg);
private:
HANDLE m_handle;
Runnable * const m_pRunnable; //接口调用
unsigned int m_ThreadID;
std::string m_ThreadName;
volatile bool m_bRun;
};
#endif
实现:
#include "stdafx.h"
#include "Thread.h"
CThread::CThread(void) :
m_pRunnable(NULL),
m_bRun(false)
{
}
CThread::~CThread(void)
{
}
CThread::CThread(Runnable * pRunnable) :
m_ThreadName(""),
m_pRunnable(pRunnable),
m_bRun(false)
{
}
CThread::CThread(const char * ThreadName, Runnable * pRunnable) :
m_ThreadName(ThreadName),
m_pRunnable(pRunnable),
m_bRun(false)
{
}
CThread::CThread(std::string ThreadName, Runnable * pRunnable) :
m_ThreadName(ThreadName),
m_pRunnable(pRunnable),
m_bRun(false)
{
}
bool CThread::Start(bool bSuspend)
{
if(m_bRun)
{
return true;
}
if(bSuspend)
{
m_handle = (HANDLE)_beginthreadex(NULL, 0, StaticThreadFunc, this, CREATE_SUSPENDED, &m_ThreadID);
}
else
{
m_handle = (HANDLE)_beginthreadex(NULL, 0, StaticThreadFunc, this, 0, &m_ThreadID);
}
m_bRun = (NULL != m_handle);
return m_bRun;
}
void CThread::Run()
{
if(!m_bRun)
{
return;
}
if(NULL != m_pRunnable)
{
m_pRunnable->Run(); //接口对象运行函数
}
m_bRun = false;
}
void CThread::Join(int timeout)
{
if(NULL == m_handle || !m_bRun)
{
return;
}
if(timeout <= 0)
{
timeout = INFINITE;
}
::WaitForSingleObject(m_handle, timeout); //
}
void CThread::Resume()
{
if(NULL == m_handle || !m_bRun)
{
return;
}
::ResumeThread(m_handle); //
}
void CThread::Suspend()
{
if(NULL == m_handle || !m_bRun)
{
return;
}
::SuspendThread(m_handle); //
}
bool CThread::Terminate(unsigned long ExitCode)
{
if(NULL == m_handle || !m_bRun)
{
return true;
}
if(::TerminateThread(m_handle, ExitCode)) //
{
::CloseHandle(m_handle); //
return true;
}
return false;
}
unsigned int CThread::GetThreadID()
{
return m_ThreadID;
}
std::string CThread::GetThreadName()
{
return m_ThreadName;
}
void CThread::SetThreadName(std::string ThreadName)
{
m_ThreadName = ThreadName;
}
void CThread::SetThreadName(const char * ThreadName)
{
if(NULL == ThreadName)
{
m_ThreadName = "";
}
else
{
m_ThreadName = ThreadName;
}
}
unsigned int CThread::StaticThreadFunc(void * arg)
{
CThread * pThread = (CThread *)arg;
pThread->Run();
return 0;
}