C++ 智能指针 - c++编程基础

kClass);*/ /* printf( Test Froever Class: ); ForeverClass* pForeverClass = new ForeverClass(); TestForeverClass(pForeverClass); pForeverClass->printRefCount(); delete pForeverClass;*/ /* printf(Test Strong Class3: ); StrongClass* pStrongClass = new StrongClass(); TestStrongClass3(pStrongClass);*/ printf(Test Strong Class4: ); StrongClass* pStrongClass = new StrongClass(); TestStrongClass4(pStrongClass); return 0; }

四、运行结果

第一个：

Test Strong Class:
Construct StrongClass Object.
-----------------------
Strong Ref Count: 0.
Weak Ref Count: 1.
-----------------------
-----------------------
Strong Ref Count: 1.
Weak Ref Count: 2.
-----------------------
Destory StrongClass Object.
-----------------------
Strong Ref Count: 0.
Weak Ref Count: 1.
-----------------------
spOut: (nil).
-----------------------
Strong Ref Count: 0.
Weak Ref Count: 1.
-----------------------
~weakref_impl

第二个：

Test Strong Class2:
Construct StrongClass Object.
-----------------------
Strong Ref Count: 0.
Weak Ref Count: 1.
-----------------------
Destory StrongClass Object.
~weakref_impl

第三个：

Test Weak Class:
Construct WeakClass Object.
-----------------------
Strong Ref Count: 0.
Weak Ref Count: 1.
-----------------------
-----------------------
Strong Ref Count: 1.
Weak Ref Count: 2.
-----------------------
-----------------------
Strong Ref Count: 0.
Weak Ref Count: 1.
-----------------------
spOut: 0x1d60010.
-----------------------
Strong Ref Count: 1.
Weak Ref Count: 2.
-----------------------
Destory WeakClass Object.
~weakref_impl

第四个：

Test Froever Class:
Construct ForeverClass Object.
-----------------------
Strong Ref Count: 0.
Weak Ref Count: 1.
-----------------------
-----------------------
Strong Ref Count: 1.
Weak Ref Count: 2.
-----------------------
-----------------------
Strong Ref Count: 0.
Weak Ref Count: 1.
-----------------------
-----------------------
Strong Ref Count: 0.
Weak Ref Count: 0.
-----------------------
Destory ForeverClass Object.
~weakref_impl

第五个：

Test Strong Class3:
Construct StrongClass Object.
-----------------------
Strong Ref Count: 0.
Weak Ref Count: 1.
-----------------------
spOut: 0x646010.
-----------------------
Strong Ref Count: 1.
Weak Ref Count: 2.
-----------------------
Destory StrongClass Object.
~weakref_impl

第六个：

Test Strong Class4:
Construct StrongClass Object.
-----------------------
Strong Ref Count: 0.
Weak Ref Count: 1.
-----------------------
-----------------------
Strong Ref Count: 1.
Weak Ref Count: 2.
-----------------------
spOut: 0x154e010.
-----------------------
Strong Ref Count: 2.
Weak Ref Count: 3.
-----------------------
Destory StrongClass Object.
~weakref_impl

C++ 智能指针(四)