Tars框架单例模式TC_Singleton的使用

迈不过友情╰ 2022-03-17 02:12 157阅读 0赞

TC\_Singleton可以有选择在静态区域或堆上创建对象，下面用一个实例跑一下：  
代码如下：

// 静态区创建 static
        class TestCreateStaticObj : public TC_Singleton<TestCreateStaticObj, CreateStatic, PhoneixLifetime>
        {
        public:
            TestCreateStaticObj()
            {
                cout << "TestCreateStaticObj()" << endl;
            }
    
            ~TestCreateStaticObj()
            {
                cout << "~TestCreateStaticObj()" << endl;
            }
    
        public:
            void test()
            {
                cout << " test TestCreateStaticObj" << endl;
            }
        };
    
    	// 堆上创建
        class TestUsingNewObj : public TC_Singleton<TestUsingNewObj, CreateUsingNew, PhoneixLifetime>
        {
        public:
            TestUsingNewObj()
            {
                cout << "TestUsingNewObj()" << endl;
            }
    
            ~TestUsingNewObj()
            {
                cout << "~TestUsingNewObj()" << endl;
            }
        public:
            void test()
            {
                cout << " test TestUsingNewObj" << endl;
            }
        };

主测试代码如下：

class TestSinglton 
        {
        public:
            static void test()
            {
                try
                {
                    auto obj1 = TestCreateStaticObj::getInstance();
                    obj1->test();
                    auto obj11 = TestCreateStaticObj::getInstance();
                    obj11->test();
    
                    // 看变量所在区 声明一个static int变量，将变量地址对比粗略确定对象所在区域
                    static int staticValue = 0;
                    cout << "staticValue address: \t\t" << &staticValue << endl;
                    cout << "TestCreateStaticObj address: \t" << obj1 << endl;
    
                    cout << endl;
                    auto obj2 = TestUsingNewObj::getInstance();
                    obj2->test();
                    auto obj22 = TestUsingNewObj::getInstance();
                    obj22->test();
    
                    // 看变量所在区 声明一个堆上的变量，将变量地址对比粗略确定对象所在区域
                    int* heapValue = new int[1];
                    cout << "heapValue address: \t\t" << heapValue << endl;
                    cout << "TestUsingNewObj address: \t" << obj2 << endl;
                    delete[] heapValue; heapValue = nullptr;
                }
                catch (const std::exception& ex)
                {
                    cout << ex.what() << endl;
                }
            }
        };

--------------------

执行结果：

yu@ubuntu:~/projects/FishTars/bin/x64/Debug$ ./FishTars.out
        TestCreateStaticObj()
         test TestCreateStaticObj
         test TestCreateStaticObj
        staticValue address:            0x60a4dc
        TestCreateStaticObj address:    0x60a4e0
    
        TestUsingNewObj()
         test TestUsingNewObj
         test TestUsingNewObj
        heapValue address:              0x205d030
        TestUsingNewObj address:        0x205d010
        ~TestUsingNewObj()
        ~TestCreateStaticObj()

--------------------

实践环境：vs2017+ubuntu14.04  
代码路径：  
[https://github.com/lesliefish/FishTars/blob/master/code/FishTars/test/utiltest/test\_singleton.h][https_github.com_lesliefish_FishTars_blob_master_code_FishTars_test_utiltest_test_singleton.h]

[https_github.com_lesliefish_FishTars_blob_master_code_FishTars_test_utiltest_test_singleton.h]: https://github.com/lesliefish/FishTars/blob/master/code/FishTars/test/utiltest/test_singleton.h