From acfa74f078b23d670ad04c3a2aa9cec5fbcf5afe Mon Sep 17 00:00:00 2001 From: Shell Date: Tue, 25 Jul 2023 14:07:44 +0800 Subject: [libcpu/arm] fix race condition with ldrex,strex (#7842) Signed-off-by: Shell --- examples/utest/testcases/kernel/atomic_tc.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'examples') diff --git a/examples/utest/testcases/kernel/atomic_tc.c b/examples/utest/testcases/kernel/atomic_tc.c index a83c05f730..88a883916c 100644 --- a/examples/utest/testcases/kernel/atomic_tc.c +++ b/examples/utest/testcases/kernel/atomic_tc.c @@ -134,10 +134,11 @@ static void ture_entry(void *parameter) static void test_atomic_add(void) { rt_thread_t thread; - int i; + size_t i; sem_t = rt_sem_create("atomic_sem", 0, RT_IPC_FLAG_PRIO); - count = 0; + rt_atomic_store(&count, 0); + thread = rt_thread_create("t1", ture_entry, RT_NULL, THREAD_STACKSIZE, THREAD_PRIORITY, THREAD_TIMESLICE); rt_thread_startup(thread); thread = rt_thread_create("t2", ture_entry, RT_NULL, THREAD_STACKSIZE, THREAD_PRIORITY, THREAD_TIMESLICE); @@ -149,7 +150,8 @@ static void test_atomic_add(void) { rt_sem_take(sem_t, RT_WAITING_FOREVER); } - uassert_true(count == 3000000); + i = rt_atomic_load(&count); + uassert_true(i == 3000000); } static rt_err_t utest_tc_init(void) -- cgit v1.3.1