mirror of https://github.com/ARMmbed/mbed-os.git
Add a test to check for init race conditions
Test SingletonPtr initailization along the with lazy initailization that is built into the C++ language itself.pull/2714/head
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/*
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* Copyright (c) 2016-2016, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "mbed.h"
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#include "rtos.h"
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#include "greentea-client/test_env.h"
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#include "unity/unity.h"
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#include "utest/utest.h"
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#include "SingletonPtr.h"
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#include <stdio.h>
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using namespace utest::v1;
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#define TEST_STACK_SIZE 1024
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static uint32_t instance_count = 0;
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class TestClass {
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public:
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TestClass() {
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printf("TestClass ctor start\r\n");
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Thread::wait(500);
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instance_count++;
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printf("TestClass ctor end\r\n");
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}
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void do_something() {
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printf("Do something called\r\n");
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}
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~TestClass() {
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instance_count--;
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}
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};
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static TestClass* get_test_class()
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{
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static TestClass tc;
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return &tc;
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}
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static SingletonPtr<TestClass> test_class;
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static void main_func_race()
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{
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get_test_class();
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}
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static void main_class_race()
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{
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test_class->do_something();
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}
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void test_case_func_race()
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{
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printf("Running function race test\r\n");
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Callback<void()> cb(main_func_race);
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Thread *t1 = new Thread(osPriorityNormal, TEST_STACK_SIZE);
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Thread *t2 = new Thread(osPriorityNormal, TEST_STACK_SIZE);
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// Start start first thread
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t1->start(cb);
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// Start second thread while the first is inside the constructor
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Thread::wait(250);
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t2->start(cb);
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// Wait for the threads to finish
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t1->join();
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t2->join();
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delete t1;
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delete t2;
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TEST_ASSERT_EQUAL_UINT32(1, instance_count);
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// Reset instance count
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instance_count = 0;
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}
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void test_case_class_race()
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{
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printf("Running class race test\r\n");
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Callback<void()> cb(main_class_race);
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Thread *t1 = new Thread(osPriorityNormal, TEST_STACK_SIZE);
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Thread *t2 = new Thread(osPriorityNormal, TEST_STACK_SIZE);
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// Start start first thread
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t1->start(cb);
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// Start second thread while the first is inside the constructor
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Thread::wait(250);
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t2->start(cb);
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// Wait for the threads to finish
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t1->join();
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t2->join();
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delete t1;
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delete t2;
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TEST_ASSERT_EQUAL_UINT32(1, instance_count);
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// Reset instance count
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instance_count = 0;
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}
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Case cases[] = {
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Case("function init race", test_case_func_race),
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Case("class init race", test_case_class_race),
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};
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utest::v1::status_t greentea_test_setup(const size_t number_of_cases)
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{
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GREENTEA_SETUP(20, "default_auto");
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return greentea_test_setup_handler(number_of_cases);
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}
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Specification specification(greentea_test_setup, cases, greentea_test_teardown_handler);
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int main()
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{
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Harness::run(specification);
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}
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