windows多线程编程-----1.四个线程同时输出//一个文件( 没有参数+有参数 )

/*******************************************************
*一般情况下多线程编程多采用MFC类库实现,那么如果不使用MFC 如何进行多线程程序设计呢?本文将就这个问题进行讨论:

微软在Windows API中提供了建立新的线程的函数CreateThread,它的语法如下:

hThread = CreateThread (&security_attributes, dwStackSize, ThreadProc,pParam, dwFlags, &idThread) ; 

第一个参数是指向SECURITY_ATTRIBUTES型态的结构的指针。在Windows 98中忽略该参数。在Windows NT中,它被设为NULL。第二个参数是用于新线程的初始堆栈大小,默认值为0。在任何情况下,Windows根据需要动态延长堆栈的大小。

CreateThread的第三个参数是指向线程函数的指标。函数名称没有限制,但是必须以下列形式声明:

DWORD WINAPI ThreadProc (PVOID pParam) ; 
    
CreateThread的第四个参数为传递给ThreadProc的参数。这样主线程和从属线程就可以共享数据。
  
CreateThread的第五个参数通常为0,但当建立的线程不马上执行时为旗标CREATE_SUSPENDED。线程将暂停直到呼叫ResumeThread来恢复线程的执行为止。第六个参数是一个指标,指向接受执行绪ID值的变量。
	
大多数Windows程序写作者喜欢用在PROCESS.H表头文件中声明的C执行时期链接库函数_beginthread。它的语法如下:
	  
hThread = _beginthread (ThreadProc, uiStackSize, pParam) ; 
		
它更简单,对于大多数应用程序很完美,这个线程函数的语法为:
		  
void __cdecl ThreadProc (void * pParam) ; 
			
在建立多线程的Windows程序时,需要在「Project Settings」对话框中做一些修改。选择「C/C++」页面标签,
然后在「Category」下拉式清单方块中选择「Code Generation」。
在「Use Run-Time Library」下拉式清单方块中,可以看到用于「Release」设定的
「Single-Threaded」和用于Debug设定的「Debug Single-Threaded」。
将这些分别改为「Multithreaded」和「Debug Multithreaded」。
这将把编译器旗标改为/MT,它是编译器在编译多线程的应用程序所需要的。

对本贴有更好的方法或建议请不吝赐教,可以给本人留言或发邮件: 
Email:[email protected] 
Thanks! 

* deom1---四个线程同时写一个文件( 没有参数 ) 
*
*
***********************************************************/
#if 0
#include <windows.h>
#include <process.h> /* _beginthread, _endthread */
#include <iostream>
#include <fstream>
#include <conio.h>
using namespace std;



void ThreadFunc1(PVOID param)
{
	while(1)
	{
		Sleep(SECOND);
		//out<<"This was draw by thread l"<<endl;
		cout<<"This was draw by thread l"<<endl;
	}
}

void ThreadFunc2(PVOID param)
{
	while(1)
	{
		Sleep(SECOND);
		//out<<"This was draw by thread 2"<<endl;
		cout<<"This was draw by thread 2"<<endl;
	}
}

void ThreadFunc3(PVOID param)
{
	while(1)
	{
		Sleep(SECOND);
		//out<<"This was draw by thread 3"<<endl;
		cout<<"This was draw by thread 3"<<endl;
	}
}

void ThreadFunc4(PVOID param)
{
	while(1)
	{
		Sleep(SECOND);
		//out<<"This was draw by thread 4"<<endl;
		cout<<"This was draw by thread 4"<<endl;
	}
}

int main()
{
	int i=0;
	_beginthread(ThreadFunc1,0,NULL);
	_beginthread(ThreadFunc2,0,NULL);
	_beginthread(ThreadFunc3,0,NULL);
	_beginthread(ThreadFunc4,0,NULL);
	getch();
	cout<<"end";
	return 0;
}
#endif


#if 1
/*******************************************************
*
* deom2---四个线程同时写一个文件( 有参数 ) 
*
*
***********************************************************/
#include <windows.h>
#include <process.h> /* _beginthread, _endthread */
#include <iostream>
#include <fstream>
#include <string>
#include <conio.h>

using namespace std;


#ifndef ULONG
#define ULONG unsigned long
#endif //ULONG

#define SECOND 1000 //定义Sleep(SECOND)睡眠时间的大小

/* 0,等待,1运行 */
ULONG g_ulSignal = 0;//定义一个信号量,用于各线程中互斥

//ofstream out("out.txt");

//ofstream out("out.txt");

void ThreadFunc1(PVOID param)
{
	while(1)
	{
		char *p;
		p=(char *) param;
		Sleep(SECOND);
		//out<<p<<"This was draw by thread l"<<endl;
		cout<<p<<"This was draw by thread l"<<endl;
	}
}

void ThreadFunc2(PVOID param)
{
	while(1)
	{
		Sleep(SECOND);
		//out<<"This was draw by thread 2"<<endl;
		cout<<"This was draw by thread 2"<<endl;
	}
}

void ThreadFunc3(PVOID param)
{
	while(1)
	{
		Sleep(SECOND);
		//out<<"This was draw by thread 3"<<endl;
		cout<<"This was draw by thread 3"<<endl;
	}
}

void ThreadFunc4(PVOID param)
{
	while(1)
	{
		Sleep(SECOND);
		//out<<"This was draw by thread 4"<<endl;
		cout<<"This was draw by thread 4"<<endl;
	}
}

int main()
{
	char *pstr=" 参数传递成功\n";
	
	_beginthread(ThreadFunc1,0,pstr);
	_beginthread(ThreadFunc2,0,NULL);
	_beginthread(ThreadFunc3,0,NULL);
	_beginthread(ThreadFunc4,0,NULL);
	getch();

	return 0;
}

#endif //#if 0


 

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