1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Copyright (c) 2016 Linux Test Project 4 */ 5 6/* 7 * Test that tst_atomic_inc works as expected. 8 */ 9 10#include <pthread.h> 11#include "tst_test.h" 12 13#define THREADS 64 14#define ITERATIONS 100000 15 16static int atomic; 17 18static void *worker(void *id) 19{ 20 int i; 21 22 (void) id; 23 for (i = 0; i < ITERATIONS; i++) 24 tst_atomic_inc(&atomic); 25 26 return NULL; 27} 28 29static void do_test(void) 30{ 31 long i; 32 pthread_t threads[THREADS]; 33 34 for (i = 0; i < THREADS; i++) 35 pthread_create(threads+i, NULL, worker, (void *)i); 36 37 for (i = 0; i < THREADS; i++) { 38 tst_res(TINFO, "Joining thread %li", i); 39 pthread_join(threads[i], NULL); 40 } 41 42 if (atomic == THREADS * ITERATIONS) 43 tst_res(TPASS, "Atomic working as expected"); 44 else 45 tst_res(TFAIL, "Atomic does not have expected value"); 46} 47 48static struct tst_test test = { 49 .test_all = do_test, 50}; 51