1 /* 2 * Copyright (c) 2016 Linux Test Project 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License as 6 * published by the Free Software Foundation; either version 2 of 7 * the License, or (at your option) any later version. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 */ 15 16 /* 17 * Test that tst_atomic_inc works as expected. 18 */ 19 20 #include <pthread.h> 21 #include "tst_test.h" 22 23 #define THREADS 64 24 #define ITERATIONS 100000 25 26 static int atomic; 27 28 static void *worker(void *id) 29 { 30 int i; 31 32 (void) id; 33 for (i = 0; i < ITERATIONS; i++) 34 tst_atomic_inc(&atomic); 35 36 return NULL; 37 } 38 39 static void do_test(void) 40 { 41 long i; 42 pthread_t threads[THREADS]; 43 44 for (i = 0; i < THREADS; i++) 45 pthread_create(threads+i, NULL, worker, (void *)i); 46 47 for (i = 0; i < THREADS; i++) { 48 tst_res(TINFO, "Joining thread %li", i); 49 pthread_join(threads[i], NULL); 50 } 51 52 if (atomic == THREADS * ITERATIONS) 53 tst_res(TPASS, "Atomic working as expected"); 54 else 55 tst_res(TFAIL, "Atomic does not have expected value"); 56 } 57 58 static struct tst_test test = { 59 .test_all = do_test, 60 }; 61
