Diff: mbed-os/TESTS/mbedmicro-rtos-mbed/condition_variable/main.cpp

Revision:

0:9fca2b23d0ba

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os/TESTS/mbedmicro-rtos-mbed/condition_variable/main.cpp	Sat Feb 23 12:13:36 2019 +0000
@@ -0,0 +1,186 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "mbed.h"
+#include "greentea-client/test_env.h"
+#include "unity.h"
+#include "utest.h"
+#include "rtos.h"
+
+#if defined(MBED_RTOS_SINGLE_THREAD)
+  #error [NOT_SUPPORTED] test not supported
+#endif
+
+using namespace utest::v1;
+
+#define TEST_STACK_SIZE 512
+#define TEST_DELAY 10
+
+static int change_counter = 0;
+static Mutex mutex;
+static ConditionVariable cond(mutex);
+
+void increment_on_signal()
+{
+    mutex.lock();
+
+    cond.wait();
+    change_counter++;
+
+    mutex.unlock();
+}
+
+void test_notify_one()
+{
+    Thread t1(osPriorityNormal, TEST_STACK_SIZE);
+    Thread t2(osPriorityNormal, TEST_STACK_SIZE);
+
+    change_counter = 0;
+    t1.start(increment_on_signal);
+    t2.start(increment_on_signal);
+
+    wait_ms(TEST_DELAY);
+    TEST_ASSERT_EQUAL(0, change_counter);
+
+    mutex.lock();
+    cond.notify_one();
+    mutex.unlock();
+
+    wait_ms(TEST_DELAY);
+    TEST_ASSERT_EQUAL(1, change_counter);
+
+    mutex.lock();
+    cond.notify_one();
+    mutex.unlock();
+
+    t1.join();
+    t2.join();
+}
+
+void test_notify_all()
+{
+    Thread t1(osPriorityNormal, TEST_STACK_SIZE);
+    Thread t2(osPriorityNormal, TEST_STACK_SIZE);
+
+    change_counter = 0;
+    t1.start(increment_on_signal);
+    t2.start(increment_on_signal);
+
+    wait_ms(TEST_DELAY);
+    TEST_ASSERT_EQUAL(0, change_counter);
+
+    mutex.lock();
+    cond.notify_all();
+    mutex.unlock();
+
+    wait_ms(TEST_DELAY);
+    TEST_ASSERT_EQUAL(2, change_counter);
+
+    t1.join();
+    t2.join();
+}
+
+
+class TestConditionVariable : public ConditionVariable {
+
+public:
+    static void test_linked_list(void)
+    {
+        Waiter *list = NULL;
+        Waiter w1;
+        Waiter w2;
+        Waiter w3;
+        Waiter w4;
+
+        TEST_ASSERT_EQUAL(0, validate_and_get_size(&list));
+
+        // Add 4 nodes
+        _add_wait_list(&list, &w1);
+        TEST_ASSERT_EQUAL(1, validate_and_get_size(&list));
+        _add_wait_list(&list, &w2);
+        TEST_ASSERT_EQUAL(2, validate_and_get_size(&list));
+        _add_wait_list(&list, &w3);
+        TEST_ASSERT_EQUAL(3, validate_and_get_size(&list));
+        _add_wait_list(&list, &w4);
+        TEST_ASSERT_EQUAL(4, validate_and_get_size(&list));
+
+        // Remove a middle node
+        _remove_wait_list(&list, &w2);
+        TEST_ASSERT_EQUAL(3, validate_and_get_size(&list));
+
+        // Remove front node
+        _remove_wait_list(&list, &w1);
+        TEST_ASSERT_EQUAL(2, validate_and_get_size(&list));
+
+        // remove back node
+        _remove_wait_list(&list, &w4);
+        TEST_ASSERT_EQUAL(1, validate_and_get_size(&list));
+
+        // remove last node
+        _remove_wait_list(&list, &w3);
+        TEST_ASSERT_EQUAL(0, validate_and_get_size(&list));
+
+        TEST_ASSERT_EQUAL_PTR(NULL, list);
+    }
+
+    /**
+     * Validate the linked list an return the number of elements
+     *
+     * If this list is invalid then this function asserts and does not
+     * return.
+     *
+     * Every node in a valid linked list has the properties:
+     * 1. node->prev->next == node
+     * 2. node->next->prev == node
+     */
+    static int validate_and_get_size(Waiter **list)
+    {
+        Waiter *first = *list;
+        if (NULL == first) {
+            // List is empty
+            return 0;
+        }
+
+        int size = 0;
+        Waiter *current = first;
+        do {
+            TEST_ASSERT_EQUAL_PTR(current, current->prev->next);
+            TEST_ASSERT_EQUAL_PTR(current, current->next->prev);
+            current = current->next;
+            size++;
+        } while (current != first);
+        return size;
+    }
+
+};
+
+utest::v1::status_t test_setup(const size_t number_of_cases)
+{
+    GREENTEA_SETUP(10, "default_auto");
+    return verbose_test_setup_handler(number_of_cases);
+}
+
+Case cases[] = {
+    Case("Test notify one", test_notify_one),
+    Case("Test notify all", test_notify_all),
+    Case("Test linked list", TestConditionVariable::test_linked_list),
+};
+
+Specification specification(test_setup, cases);
+
+int main()
+{
+    return !Harness::run(specification);
+}