1 /* 2 * Copyright (C) 2015 Cyril Hrubis <chrubis (at) suse.cz> 3 * 4 * Licensed under the GNU GPLv2 or later. 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 13 * the GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 18 */ 19 20 #define TRESHOLD_US 100000 21 22 static void verify_futex_wait_bitset(long long wait_us, clock_t clk_id) 23 { 24 struct timespec start, to, end; 25 futex_t futex = FUTEX_INITIALIZER; 26 u_int32_t bitset = 0xffffffff; 27 int flags = clk_id == CLOCK_REALTIME ? FUTEX_CLOCK_REALTIME : 0; 28 29 tst_resm(TINFO, "testing futex_wait_bitset() timeout with %s", 30 clk_id == CLOCK_REALTIME ? "CLOCK_REALTIME" : "CLOCK_MONOTONIC"); 31 32 clock_gettime(clk_id, &start); 33 to = tst_timespec_add_us(start, wait_us); 34 35 TEST(futex_wait_bitset(&futex, futex, &to, bitset, flags)); 36 37 clock_gettime(clk_id, &end); 38 39 if (TEST_RETURN != -1) { 40 tst_resm(TFAIL, "futex_wait_bitset() returned %li, expected -1", 41 TEST_RETURN); 42 return; 43 } 44 45 if (TEST_ERRNO == ENOSYS) { 46 tst_resm(TCONF, "In this kernel, futex() does not support " 47 "FUTEX_WAIT_BITSET operation"); 48 return; 49 } 50 51 if (TEST_ERRNO != ETIMEDOUT) { 52 tst_resm(TFAIL | TTERRNO, "expected %s", 53 tst_strerrno(ETIMEDOUT)); 54 return; 55 } 56 57 if (tst_timespec_lt(end, to)) { 58 tst_resm(TFAIL, 59 "futex_wait_bitset() woken up prematurely %llius, expected %llius", 60 tst_timespec_diff_us(end, start), wait_us); 61 return; 62 } 63 64 if (tst_timespec_diff_us(end, to) > TRESHOLD_US) { 65 tst_resm(TFAIL, 66 "futex_wait_bitset() waited too long %llius, expected %llius", 67 tst_timespec_diff_us(end, start), wait_us); 68 return; 69 } 70 71 tst_resm(TPASS, "futex_wait_bitset() waited %llius, expected %llius", 72 tst_timespec_diff_us(end, start), wait_us); 73 } 74
