1 /* 2 * Copyright (C) 2015-2017 Cyril Hrubis <chrubis (at) suse.cz> 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 12 * the GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 19 /* 20 * Check that select() timeouts correctly. 21 */ 22 #include <unistd.h> 23 #include <errno.h> 24 #include <sys/time.h> 25 #include <sys/types.h> 26 #include <fcntl.h> 27 28 #include "tst_timer_test.h" 29 30 static int fds[2]; 31 32 static int sample_fn(int clk_id, long long usec) 33 { 34 struct timeval timeout = tst_us_to_timeval(usec); 35 fd_set sfds; 36 37 FD_ZERO(&sfds); 38 39 FD_SET(fds[0], &sfds); 40 41 tst_timer_start(clk_id); 42 TEST(select(1, &sfds, NULL, NULL, &timeout)); 43 tst_timer_stop(); 44 tst_timer_sample(); 45 46 if (TEST_RETURN != 0) { 47 tst_res(TFAIL | TTERRNO, "select() returned %li", TEST_RETURN); 48 return 1; 49 } 50 51 return 0; 52 } 53 54 static void setup(void) 55 { 56 SAFE_PIPE(fds); 57 } 58 59 static void cleanup(void) 60 { 61 if (fds[0] > 0) 62 SAFE_CLOSE(fds[0]); 63 64 if (fds[1] > 0) 65 SAFE_CLOSE(fds[1]); 66 } 67 68 static struct tst_test test = { 69 .scall = "select()", 70 .sample = sample_fn, 71 .setup = setup, 72 .cleanup = cleanup, 73 }; 74
