UC故事2011/11/30

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信息隐藏数字图像空域隐写与分析技术的实现【代码】信息隐藏数字图像空域隐写与分析技术的实现。阅读详情

今日之事

* 文档完成

* Jiarong例子

* test的例子

1. CRtThreadManager

* class definition

class RT_API_EXPORT CRtThreadManager
{
....

static CRtThreadManager* Instance(); // singleton implementation. bad implemented.
static void CleanupOnlyOne();

RtResult InitMainThread(int aArgc, char** aArgv);

.....

CRtThread* GetThread(TType aType); // for what ?
IRtReactor* GetThreadReactor(TType aType);
IRtEventQueue* GetThreadEventQueue(TType aType); // why this ? 实际上只是一个"convenient method“，调用GetThread()完成。 2011/12/08
IRtTimerQueue* GetThreadTimerQueue(TType aType);

...

// create Task Thread (include EventQueue and TimerQueue only)        // for what ??? what is task thread ?
RtResult CreateUserTaskThread(
  CRtThread *&aThread,
  TFlag aFlag = TF_JOINABLE,
  BOOL bWithTimerQueue = TRUE);

......

public:
// the following member functions are mainly used in TP.
RtResult CreateReactorThread(TType aType, IRtReactor *aReactor, CRtThread *&aThread);

// mainly invoked by CRtThreadManager::~CRtThreadManager()
RtResult StopAllThreads(CRtTimeValue* aTimeout = NULL);
RtResult JoinAllThreads(); // what's this ?

// mainly invoked by CRtThread::Create().
RtResult RegisterThread(CRtThread* aThread); // all threads need to be registered ?

RtResult UnregisterThread(CRtThread* aThread);

......

enum TModule    // for what ?
{
  TM_SINGLE_MAIN,
  TM_MULTI_ONE_DEDICATED,
  TM_MULTI_POOL
};
static TModule GetNetworkThreadModule();
......

......

static IRtReactor* CreateNetworkReactor(); // 根据不同的宏创建不同的reactor实例

// 基本上有3种不同的Reactor给network thread: CRtReactorSelect, CRtReactorWin32Asyncselect, CRtReactorEpoll 2011/12/08

private:
RtResult SpawnNetworkThread_i(); // 产生子线程，具体细节？？？

......

// singleton mutex is recursive due to CRtCleanUpBase() will lock it too.
CRtMutexThreadRecursive m_SingletonMutex;
CRtMutexThread m_ReferenceControlMutexThread;

typedef std::vector<CRtThread *> ThreadsType;
ThreadsType m_Threads;
typedef CRtMutexThread MutexType ;
MutexType m_Mutex;
TType m_TTpyeUserThread;

......
CRtThread *m_pThreadNetwork; // for what ?

......

};

* CRtThreadManager::InitMainThread()

初始化的不仅仅是main thread

* CRtThreadManager::CreateNetworkReactor()

根据宏选择生成不同的Reactor，以下三种之一：

CRtReactorSelect

CRtReactorWin32AsyncSelect

CRtReactorEpoll

CRtThreadManager::RegisterThread()

RtResult CRtThreadManager::RegisterThread(CRtThread* aThread)
{
RT_ASSERTE_RETURN(aThread, RT_ERROR_INVALID_ARG);
......

ThreadsType::iterator iter = m_Threads.begin();
for ( ; iter != m_Threads.end(); ++iter) {
  // we don't check equal ThreadId because mutil CRtThreads may use the same id.   WHY ???
  if ((*iter) == aThread ||
   (*iter)->GetThreadType() == aThread->GetThreadType())
  {

   ......
   return RT_ERROR_FOUND;
  }
}

m_Threads.push_back(aThread);
return RT_OK;

}

2. 文档总结

Q：CEventQueue与TimerQueue分别完成什么功能？

A：前者用于不同线程之间传递信息，后者完成定时器功能 2011/12/08

Q：一个client下面也有3个线程？分别做什么东东？

Q：ThreadManager用于启动（管理）网络线程，only网络线程？

A：管理所有线程。 2011/12/08

N：关于线程与事件队列

主（平台）线程类网络线程类主线程事件队列类网络线程事件队列类

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