testflock.c

Linux环境下常用功能的实现

#include "../cutil.h"

int main(int argc, char **argv)
{
	int nFD;

	if((nFD = open("testflock.c", O_RDWR)) < 0)
	{
		fprintf(stderr, "Open testflock.c error %s\n", strerror(errno));
		return -1;
	}
	if(cutil_flock_set_read(nFD, 0, 100) < 0)
	{
		fprintf(stderr, "set read lock error %s\n", strerror(errno));
		return -1;
	}
	fprintf(stderr, "Success set read lock\n");
	sleep(60);
	cutil_flock_unset_read(nFD, 0, 100);

	if(cutil_flock_set_write(nFD, 0, 100) < 0)
	{
		fprintf(stderr, "set write lock error %s\n", strerror(errno));
		return -1;
	}
	fprintf(stderr, "Success set write lock\n");
	sleep(60);
	cutil_flock_unset_write(nFD, 0, 100);

	return 0;
}