minithread.cpp

来自「wince5.0 pb中pccard源码」· C++ 代码 · 共 113 行

//******************************************************************************
//
//
// This source code is licensed under Microsoft Shared Source License
// Version 1.0 for Windows CE.
// For a copy of the license visit http://go.microsoft.com/fwlink/?LinkId=3223.
//******************************************************************************

/*++
Module Name:  
	miniThread.cpp

Abstract:

     implementation of the thread class

--*/

#include "windows.h"
#include "minithread.h"
#include "common.h"

MiniThread::MiniThread (DWORD dwStackSize, int iPriority, BOOL bSuspended)
{
	bTerminated=FALSE;
	exitCode=(DWORD)-1;
	threadHandle=::CreateThread(NULL,dwStackSize,MiniThread::ThreadProc,(LPVOID)this,
		bSuspended?CREATE_SUSPENDED:0,&threadId);
	if (threadHandle)
		::SetThreadPriority(threadHandle,iPriority);
	suspendFlag=bSuspended;
};
MiniThread::~MiniThread()
{
	ForceTerminated();
}
BOOL MiniThread::ForceTerminated()
{
	if (threadHandle) {
		BOOL bReturn=::TerminateThread(threadHandle,(DWORD)-1); // terminate abormal
		exitCode=(DWORD)-1;
		::CloseHandle(threadHandle);
		threadHandle=NULL;
		return bReturn;
	};
	return TRUE;
}

BOOL MiniThread::ThreadStart()
{
	if (!threadHandle) {
		return FALSE;
	}

	if (suspendFlag) {
		if (ResumeThread( threadHandle)== (DWORD)(-1)) { // failure for somehow
			return FALSE;
		};
		suspendFlag=FALSE;
	}
	return TRUE;
}
BOOL MiniThread::ThreadStop()
{
	if (!threadHandle) {
		return FALSE;
	}

	if (!suspendFlag) {
		if (SuspendThread(threadHandle) == (DWORD) (-1)) { // failure
			return FALSE;
		}
		suspendFlag=TRUE;
	}
	return TRUE;
}
BOOL MiniThread::ThreadTerminated(DWORD dwMilliseconds)
{
	bTerminated=TRUE;
	return WaitThreadComplete(dwMilliseconds);
}
BOOL MiniThread::WaitThreadComplete(DWORD dwMilliSeconds)
{
	DEBUGMSG(ZONE_VERBOSE, (TEXT("WaitThreadComplete Wait Thread(%lx) for %ld ticks\n"),threadId,dwMilliSeconds));
	if (!threadHandle) {
		return FALSE;
	};

	if (ThreadStart()) {
		if (::WaitForSingleObject(threadHandle,dwMilliSeconds)==WAIT_OBJECT_0) {// thread dead
			::CloseHandle(threadHandle);
			threadHandle=NULL;
			DEBUGMSG(ZONE_VERBOSE, (TEXT("WaitThreadComplete for Completion\n")));
			return TRUE;
		}
		else {
			DEBUGMSG(ZONE_ERROR, (TEXT("WaitThreadComplete Time Out\n")));
		}
	}
	else
		DEBUGMSG(ZONE_VERBOSE, (TEXT("WaitThreadComplete for stoped thread\n")));
	return FALSE;
}

DWORD WINAPI MiniThread::ThreadProc( LPVOID dParam)
{
	MiniThread * threadPtr= (MiniThread *)dParam;
	threadPtr->exitCode=threadPtr-> ThreadRun();
	::ExitThread(threadPtr->exitCode);
	return threadPtr->exitCode;
};