read.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_RDONLY | O_CREAT,0644);
	cout<<"before enter reed lock\n";
	if(Prwlock::rlock(fd)<0)
	{
		cout<<"rlock error\n";
		return -1;
	}
	cout<<"*** enter read lock ***\n";
	sleep(3);
	Prwlock::unlock(fd);
	cout<<"leave read lock\n";

	close(fd);
}