/* Copyright (C) 2003-2014 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <errno.h> #include <stdio.h> #include <unistd.h> #include <sys/time.h> #include <time.h> /* Test that nanosleep() does sleep. */ static int do_test (void) { /* Current time. */ struct timeval tv1; (void) gettimeofday (&tv1, NULL); struct timespec ts; ts.tv_sec = 1; ts.tv_nsec = 0; TEMP_FAILURE_RETRY (nanosleep (&ts, &ts)); /* At least one second must have passed. */ struct timeval tv2; (void) gettimeofday (&tv2, NULL); tv2.tv_sec -= tv1.tv_sec; tv2.tv_usec -= tv1.tv_usec; if (tv2.tv_usec < 0) --tv2.tv_sec; if (tv2.tv_sec < 1) { puts ("nanosleep didn't sleep long enough"); return 1; } return 0; } #define TEST_FUNCTION do_test () #include "../test-skeleton.c"