diff options
| author | Shell <[email protected]> | 2024-05-16 15:45:12 +0800 |
|---|---|---|
| committer | GitHub <[email protected]> | 2024-05-16 15:45:12 +0800 |
| commit | e25fc8b5118fba87acd5bc677641926a913bb3a5 (patch) | |
| tree | d86b1be0152b2d3f360c83a3922d945f565ecaf0 /examples | |
| parent | e46333496f880afe7ae2864967406f758aec55a7 (diff) | |
[libcpu/arm64] add C11 atomic ticket spinlock (#8882)
* [libcpu/arm64] add C11 atomic ticket spinlock
Replace the former implementation of flag-based spinlock which is unfair
Besides, C11 atomic implementation is more readable (it's C anyway),
and maintainable. Cause toolchain can use their builtin optimization and
tune for different micro-architectures. For example armv8.5 introduces a
better instruction. The compiler can help with that when it knows your
target platform in support of it.
Signed-off-by: Shell <[email protected]>
* fixup: RT_CPUS_NR
---------
Signed-off-by: Shell <[email protected]>
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/utest/testcases/kernel/sched_sem_tc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/examples/utest/testcases/kernel/sched_sem_tc.c b/examples/utest/testcases/kernel/sched_sem_tc.c index a6302daba2..f071e143fe 100644 --- a/examples/utest/testcases/kernel/sched_sem_tc.c +++ b/examples/utest/testcases/kernel/sched_sem_tc.c @@ -29,7 +29,7 @@ #error the thread priority should at least be greater than idle #endif -static rt_atomic_t _star_counter = 1; +static rt_atomic_t _star_counter; static struct rt_semaphore _thr_exit_sem; static struct rt_semaphore _level_waiting[TEST_LEVEL_COUNTS]; static rt_thread_t _thread_matrix[TEST_LEVEL_COUNTS][KERN_TEST_CONCURRENT_THREADS]; @@ -157,6 +157,8 @@ static void scheduler_tc(void) static rt_err_t utest_tc_init(void) { LOG_I("Setup environment..."); + _star_counter = 1; + rt_memset(_load_average, 0, sizeof(_load_average)); rt_sem_init(&_thr_exit_sem, "test", 0, RT_IPC_FLAG_PRIO); for (size_t i = 0; i < TEST_LEVEL_COUNTS; i++) |