-#ifndef WIN32
- struct flock lock;
- lock.l_type = F_WRLCK; /* exclusive write lock */
- lock.l_len = 0; /* whole file */
- lock.l_start = 0; /* start of file */
- lock.l_whence = SEEK_SET; /* end of file */
-
- stat = fcntl(rrd_fd, F_SETLK, &lock);
-#else