🎯 Sync smart & scheduler codes (#8537)

Signed-off-by: Shell <smokewood@qq.com>
Co-authored-by: xqyjlj <xqyjlj@126.com>

examples/utest/testcases/kernel/sched_mtx_tc.c

@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2006-2024, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2024-01-17     Shell        the first version
+ */
+#include <rtthread.h>
+#include <stdlib.h>
+#include "utest.h"
+
+/**
+ * Stressful Test for Mutex
+ */
+
+#define TEST_SECONDS 30
+#define TEST_LOOP_TICKS (TEST_SECONDS * RT_TICK_PER_SECOND)
+#define TEST_THREAD_COUNTS (RT_CPUS_NR)
+#define TEST_PROGRESS_COUNTS (36)
+#define TEST_PROGRESS_ON (TEST_LOOP_TICKS/TEST_PROGRESS_COUNTS)
+#define TEST_PRIORITY_HIGHEST (UTEST_THR_PRIORITY+1)
+#define TEST_RANDOM_LATENCY_MAX (1000 * 1000)
+
+static struct rt_semaphore _thr_exit_sem;
+static rt_atomic_t _progress_counter;
+static rt_atomic_t _exit_flag;
+static struct rt_mutex _racing_lock;
+
+static void test_thread_entry(void *param)
+{
+    while (1)
+    {
+        rt_mutex_take(&_racing_lock, RT_WAITING_FOREVER);
+        rt_mutex_release(&_racing_lock);
+
+        if (rt_atomic_load(&_exit_flag))
+        {
+            break;
+        }
+    }
+
+    rt_sem_release(&_thr_exit_sem);
+}
+
+static void mutex_stress_tc(void)
+{
+    rt_err_t error;
+    rt_thread_t tester;
+    const rt_base_t priority_base = TEST_PRIORITY_HIGHEST;
+
+    for (size_t i = 0; i < TEST_THREAD_COUNTS; i++)
+    {
+        tester = rt_thread_create(
+            "tester",
+            test_thread_entry,
+            (void *)0,
+            UTEST_THR_STACK_SIZE,
+            priority_base + (i % (RT_THREAD_PRIORITY_MAX - TEST_PRIORITY_HIGHEST)),
+            1);
+
+        rt_thread_startup(tester);
+    }
+
+    for (size_t i = 0; i < TEST_LOOP_TICKS; i++)
+    {
+        rt_thread_delay(1);
+
+        if (rt_atomic_add(&_progress_counter, 1) % TEST_PROGRESS_ON == 0)
+            uassert_true(1);
+    }
+
+    /* trigger exit request for all sub-threads */
+    rt_atomic_store(&_exit_flag, 1);
+
+    /* waiting for sub-threads to exit */
+    for (size_t i = 0; i < TEST_THREAD_COUNTS; i++)
+    {
+        error = rt_sem_take(&_thr_exit_sem, RT_WAITING_FOREVER);
+        uassert_int_equal(error, RT_EOK);
+    }
+}
+
+static rt_err_t utest_tc_init(void)
+{
+    int *pseed = rt_malloc(sizeof(int));
+    srand(*(int *)pseed);
+    rt_free(pseed);
+
+    rt_sem_init(&_thr_exit_sem, "test", 0, RT_IPC_FLAG_PRIO);
+    rt_mutex_init(&_racing_lock, "ipc", RT_IPC_FLAG_PRIO);
+    return RT_EOK;
+}
+
+static rt_err_t utest_tc_cleanup(void)
+{
+    rt_sem_detach(&_thr_exit_sem);
+    rt_mutex_detach(&_racing_lock);
+    return RT_EOK;
+}
+
+static void testcase(void)
+{
+    UTEST_UNIT_RUN(mutex_stress_tc);
+}
+UTEST_TC_EXPORT(testcase, "testcases.kernel.scheduler.mutex", utest_tc_init, utest_tc_cleanup, TEST_SECONDS);