class CThread
{
private:
int m_ErrCode;
Semaphore m_ThreadSemaphore; //the inner semaphore, which is used to realize
unsigned long m_ThreadID;
bool m_Detach; //The thread is detached
bool m_CreateSuspended; //if suspend after creating
char* m_ThreadName;
ThreadState m_ThreadState; //the state of the thread
protected:
void SetErrcode(int errcode){m_ErrCode = errcode;}
static void* ThreadFunction(void*);
public:
CThread();
CThread(bool createsuspended,bool detach);
virtual ~CThread();
virtual void Run(void) = 0;
void SetThreadState(ThreadState state){m_ThreadState = state;}
bool Terminate(void); //Terminate the threa
bool Start(void); //Start to execute the thread
void Exit(void);
bool Wakeup(void);
ThreadState GetThreadState(void){return m_ThreadState;}
int GetLastError(void){return m_ErrCode;}
void SetThreadName(char* thrname){strcpy(m_ThreadName,thrname);}
char* GetThreadName(void){return m_ThreadName;}
int GetThreadID(void){return m_ThreadID;}
bool SetPriority(int priority);
int GetPriority(void);
int GetConcurrency(void);
void SetConcurrency(int num);
bool Detach(void);
bool Join(void);
bool Yield(void);
int Self(void);
线程的状态可以分为四种，空闲、忙碌、挂起、终止(包括正常退出和非正常退出)。由于目前Linux线程库不支持挂起操作，因此，我们的此处的挂起操作类似于暂停。如果线程创建后不想立即执行任务，那么我们可以将其“暂停”，如果需要运行，则唤醒。有一点必须注意的是，一旦线程开始执行任务，将不能被挂起，其将一直执行任务至完毕。
线程类的相关操作均十分简单。线程的执行入口是从Start()函数开始，其将调用函数ThreadFunction，ThreadFunction再调用实际的Run函数，执行实际的任务。
CThreadPool
CThreadPool是线程的承载容器，一般可以将其实现为堆栈、单向队列或者双向队列。在我们的系统中我们使用STL Vector对线程进行保存。CThreadPool的实现代码如下：
CThreadPool.h
#ifndef CTHREADPOOL_H_INCLUDED
#define CTHREADPOOL_H_INCLUDED
class CThreadPool
{
friend class CWorkerThread;
public:
CThreadPool();
CThreadPool(int initnum);
virtual ~CThreadPool();
void SetMaxNum(int maxnum){m_MaxNum = maxnum;}
int GetMaxNum(void){return m_MaxNum;}
void SetAvailLowNum(int minnum){m_AvailLow = minnum;}
int GetAvailLowNum(void){return m_AvailLow;}
void SetAvailHighNum(int highnum){m_AvailHigh = highnum;}
int GetAvailHighNum(void){return m_AvailHigh;}
int GetActualAvailNum(void){return m_AvailNum;}
int GetAllNum(void){return m_ThreadList.size();}
int GetBusyNum(void){return m_BusyList.size();}
void SetInitNum(int initnum){m_InitNum = initnum;}
int GetInitNum(void){return m_InitNum;}
void TerminateAll(void);
void Run(CJob* job,void* jobdata);
protected:
CWorkerThread* GetIdleThread(void);
void AppendToIdleList(CWorkerThread* jobthread);
void MoveToBusyList(CWorkerThread* idlethread);
void MoveToIdleList(CWorkerThread* busythread);
void DeleteIdleThread(int num);
void CreateIdleThread(int num);
public:
CThreadMutex m_BusyMutex; //when visit busy list,use m_BusyMutex to lock and unlock
CThreadMutex m_IdleMutex; //when visit idle list,use m_IdleMutex to lock and unlock
CThreadMutex m_JobMutex; //when visit job list,use m_JobMutex to lock and unlock
CThreadMutex m_Va