一步一步学习多线程编程之CreateThread

标签：多线程

CreatThread函数如下图所示

在这里我们只用到了第三个和第四个参数，第三个参数传递了一个函数的地址，也是我们要指定的新的线程。第四个参数是传给新线程的参数指针。

// ThreadCreateTest.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include<windows.h>

int time = 0;
void ThreadProc1()
{

	int hour = 0;
	int mins = 0;
	while(1)
	{
		hour = time/60;
		mins = time%60;
		
		int day = hour/24;
		
		if (day)
		{
			hour -=day*24;
		}
		time++;
		
		printf("线程1 %d:%d\n",hour,mins);
		Sleep(1000);
	   // system("cls");
	}

}

void ThreadProc2()
{
	int hour = 0;
	int mins = 0;
	while(1)
	{
		
		hour = time/60;
	    mins = time%60;
		int day = hour/24;//超过24个小时的话

		if (day)
		{
			hour -=day*24;
		}
		time++;
		printf("线程2 %d:%d\n",hour,mins);
		Sleep(1000);
		//system("cls");

	}
}

int main()
{

	HANDLE hThread1  = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)ThreadProc1,NULL,0,0);
	CloseHandle(hThread1);
	HANDLE hThread2 = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)ThreadProc2,NULL,0,0);
	CloseHandle(hThread2);
	
	getchar();
	return 0;
	
	
}

HANDLE CreateMutex( 

 LPSECURITY_ATTRIBUTESlpMutexAttributes,

 BOOLbInitialOwner, 

 LPCTSTRlpName );

Parameters

lpMutexAttributes

[in] Ignored. Must be NULL.

bInitialOwner

[in] Boolean that specifies the initial owner of the mutex object. If this value is TRUE and the caller created the mutex, the calling thread obtains ownership of the mutex object. Otherwise, the calling thread does not obtain ownership of the mutex. To determine if the caller created the mutex, see the Return Values section.

lpName

[in] Long pointer to a null-terminated string specifying the name of the mutex object. The name is limited to MAX_PATH characters and can contain any character except the backslash path-separator character (\). Name comparison is case sensitive.

If lpName matches the name of an existing named mutex object, the bInitialOwner parameter is ignored because it has already been set by the creation process.

If lpName is NULL, the mutex object is created without a name.

If lpName matches the name of an existing event, semaphore, or file-mapping object, the function fails and theGetLastError function returns ERROR_INVALID_HANDLE. This occurs because these objects share the same name space. 

HANDLE hMutex;
void ThreadProc1()
{
	int hour = 0;
	int mins = 0;
	while(1)
	{
		WaitForSingleObject(hMutex, INFINITE);
		hour = time/60;
		mins = time%60;
		
		int day = hour/24;
		
		if (day)
		{
			hour -=day*24;
		}
		time++;
		
		printf("线程1 %d:%d\n",hour,mins);
		Sleep(1000);
		ReleaseMutex(hMutex);
	   // system("cls");
	}

}

一步一步学习多线程编程之CreateThread

标签：多线程

原文地址：http://blog.csdn.net/xy010902100449/article/details/44899917