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 * futex_wake() returns 0 (0 woken up processes) when no processes wait on the mutex. 21 */ 22 23 #include <errno.h> 24 #include <limits.h> 25 26 #include "test.h" 27 #include "futextest.h" 28 29 const char *TCID="futex_wake01"; 30 31 struct testcase { 32 futex_t *f_addr; 33 int nr_wake; 34 int opflags; 35 }; 36 37 static futex_t futex = FUTEX_INITIALIZER; 38 39 static struct testcase testcases[] = { 40 /* nr_wake = 0 is noop */ 41 {&futex, 0, 0}, 42 {&futex, 0, FUTEX_PRIVATE_FLAG}, 43 {&futex, 1, 0}, 44 {&futex, 1, FUTEX_PRIVATE_FLAG}, 45 {&futex, INT_MAX, 0}, 46 {&futex, INT_MAX, FUTEX_PRIVATE_FLAG}, 47 }; 48 49 const int TST_TOTAL=ARRAY_SIZE(testcases); 50 51 static void verify_futex_wake(struct testcase *tc) 52 { 53 int res; 54 55 res = futex_wake(tc->f_addr, tc->nr_wake, tc->opflags); 56 57 if (res != 0) { 58 tst_resm(TFAIL, "futex_wake() returned %i, expected 0", res); 59 return; 60 } 61 62 tst_resm(TPASS, "futex_wake() returned 0"); 63 } 64 65 int main(int argc, char *argv[]) 66 { 67 int lc, i; 68 69 tst_parse_opts(argc, argv, NULL, NULL); 70 71 for (lc = 0; TEST_LOOPING(lc); lc++) { 72 for (i = 0; i < TST_TOTAL; i++) 73 verify_futex_wake(testcases + i); 74 } 75 76 tst_exit(); 77 } 78
