多线程式同步之互斥技术的应用

我们还是用上面的那个程序,要实现数据有序的读写,这次我们用互斥技术.

example1.c

#include<iostream.h>
#include<process.h>
#include<windows.h>
#include<stdio.h>

int a[5];

DWORD WINAPI Thread1(LPVOID lpParamter)
{
while(true)
{
for(int i = 0; i<5; i++)
{
a[i] = i ;
}
}

return 0 ;
}

void main()
{
HANDLE thread1;
DWORD d1;

thread1 = CreateThread(NULL,0,Thread1,NULL,0,&d1);
if(thread1 == NULL)
{
cout<<"create thread fail......"<<endl;
}

while(1)
{
for(int i = 0; i<5; i++)
{
cout<<a[0]<<" ";
}
cout<<endl<<""<<endl;

}

CloseHandle( thread1 );

example2.c

#include<iostream.h>
#include<process.h>
#include<windows.h>
#include<stdio.h>

int a[5];

HANDLE hMutex ;

DWORD WINAPI Thread1(LPVOID lpParamter)
{
while(true)
{

WaitForSingleObject(hMutex,INFINITE);
for(int i = 0; i<5; i++)
{
a[i] = i ;
}

ReleaseMutex(hMutex);
}

return 0 ;
}

void main()
{
HANDLE thread1;
DWORD d1;

hMutex = CreateMutex(NULL,FALSE,NULL);

thread1 = CreateThread(NULL,0,Thread1,NULL,0,&d1);
if(thread1 == NULL)
{
cout<<"create thread fail......"<<endl;
}

while(1)
{

WaitForSingleObject(hMutex,INFINITE);
for(int i = 0; i<5; i++)
{
cout<<a[0]<<" ";
}
cout<<endl<<""<<endl;

ReleaseMutex(hMutex);

}

CloseHandle( thread1 );