C++类之线程管理

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最近在写上位机，要用到QT，所以自己写的关于线程管理的类继承了QT里面的类。类内容如下：

class TinyThread : public QObject{Q_OBJECTpublic:TinyThread();void runObj( TinyThreadFunc func, void* pData = 0,  bool isAutoDelete = true);void runObj( TinyThreadRunable* pRunable, bool isAutoDelete = true);void runObj();void suspend();void resume();void waitForClose( int waitTime = INFINITE);bool isRunning() const; void kill();virtual ~TinyThread();                       private:virtual void run();struct TinyThreadPrivate;                   TinyThreadPrivate* pPrivateData;             };

首先看一下结构体TinyThreadPrivate里面包含哪些内容

struct TinyThread::TinyThreadPrivate{TinyThreadPrivate(){handle = 0;func = 0;    //pRunable = 0;isRunningNow = false;isAutoDelete = true;}~TinyThreadPrivate(){}void runIt(){if( func != 0){(*func)(pFuncData );   //执行回调函数}else{pOwner -> run();}isRunningNow = false;if( func && isAutoDelete )delete pFuncData;}void init_run(){waitForClose();if( handle == 0 ){unsigned int threadId;handle = (HANDLE)_beginthreadex( 0, 0, TinyThreadCallBack, pOwner, CREATE_SUSPENDED, &threadId );isRunningNow = true;ResumeThread( handle);}}void kill(){if (handle){TerminateThread(handle, 0);//_endthreadex(0);CloseHandle(handle);isRunningNow = false;//return;}handle = 0;}void suspend(){if (handle)SuspendThread(handle);}void resume(){if (handle)ResumeThread(handle);}void waitForClose( int waitTime = INFINITE ){if( handle){WaitForSingleObject( handle, waitTime );CloseHandle( handle );}handle = 0;}bool isRunningNow;      //线程是否在执行TinyThreadFunc func;    //函数指针void *pFuncData;        //数据指针，执行上面函数需要用到的参数bool isAutoDelete;      //是否自动删除上面的数据HANDLE handle;          //线程句柄TinyThread* pOwner;     //类指针private:static unsigned int __stdcall TinyThreadCallBack( LPVOID thisPtr ){TinyThread* pThis = static_cast< TinyThread* >(thisPtr);pThis -> pPrivateData -> runIt();return 0;}};

结构体包含的参数有，代码里有注释

结构体的构造函数初始化了4个参数变量，析构函数为空

void runIt()

如果函数指针不为0，则执行指针函数指向的函数；线程是否执行标志设置为false，并释放数据指针。

void suspend()

挂起线程

void resume()

恢复线程

void waitForClose( int waitTime = INFINITE )

等待线程执行完毕，释放线程句柄，将线程句柄置0.

void kill()

强制关闭线程，释放线程句柄，线程是否执行标志设置为false，线程句柄置0

void init_run()

等待上一个线程执行完毕（释放线程句柄，将线程句柄置0.），创建一个新的线程，线程被挂起，线程是否执行标志设置为true，恢复线程

static unsigned int __stdcall TinyThreadCallBack( LPVOID thisPtr )

然后看一下TinyThread类的构造函数

TinyThread::TinyThread(){pPrivateData = new TinyThreadPrivate;pPrivateData -> pOwner = this;}

为雷内结构体变量申请内存空间，并将类指针赋给结构体变量内的一个类指针变量

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