write.cpp

来自「一个ftp搜索引擎的源代码」· C++ 代码 · 共 22 行

#include "prwlock.h"
#include <fcntl.h>
#include <iostream> 
using namespace std; 

int main()
{
	int fd = open("for_rwlock",O_WRONLY | O_CREAT,0644);
	cout<<"before enter write lock\n";
	if(Prwlock::wlock(fd)<0)
	{
	    cout<<"wlock error\n";
		return -1;
	}
	cout<<"*** enter write lock ***\n";
	sleep(3);
	Prwlock::unlock(fd);
	cout<<"leave write lock\n";

	close(fd);
}