本文共 1906 字，大约阅读时间需要 6 分钟。
C /CLI中使用gcnew关键字表示在托管堆上分配内存，并且为了和以前的指针区分，用^来替换* ，就语义上来说他们的区别大致如下:
| using namespace System; ref class Foo { public: Foo() { System::Console::WriteLine("Foo::Foo"); } ~Foo() { System::Console::WriteLine("Foo::~Foo"); } public: int m_iValue; }; int _tmain() { int* pInt = new int; int^ rInt = gcnew int; Foo^ rFoo = gcnew Foo; delete rFoo; delete rInt; delete pInt; } |
| int* pInt = new int; 0000004c mov ecx，4 00000051 call dword ptr ds:[03B51554h] 00000057 mov esi，eax 00000059 mov dword ptr [esp 18h]，esi int^ rInt = gcnew int; 0000005d mov ecx，788EF9D8h 00000062 call FCFAF66C 00000067 mov esi，eax 00000069 mov dword ptr [esi 4]，0 00000070 mov edi，esi Foo^ rFoo = gcnew Foo; 00000072 mov ecx，3B51768h 00000077 call FCFAF66C 0000007c mov esi，eax 0000007e mov ecx，esi 00000080 call dword ptr ds:[03B517ACh] 00000086 mov dword ptr [esp 1Ch]，esi delete rFoo; 0000008a mov ebx，dword ptr [esp 1Ch] 0000008e test ebx，ebx 00000090 je 000000A4 00000092 mov ecx，ebx 00000094 call dword ptr ds:[03FD0028h] 0000009a mov dword ptr [esp 14h]，0 000000a2 jmp 000000AC 000000a4 mov dword ptr [esp 14h]，0 delete rInt; 000000ac mov edx，edi 000000ae mov ecx，788F747Ch 000000b3 call FC8D20FD 000000b8 mov ebp，eax 000000ba test ebp，ebp 000000bc je 000000D0 000000be mov ecx，ebp 000000c0 call dword ptr ds:[03FD0020h] 000000c6 mov dword ptr [esp 10h]，0 000000ce jmp 000000D8 000000d0 mov dword ptr [esp 10h]，0 delete pInt; 000000d8 mov ecx，dword ptr [esp 18h] 000000dc call dword ptr ds:[03B51540h] |
| int* pInt = new int; 0000004c mov ecx，4 00000051 call dword ptr ds:[03B51554h] |
转载地址：http://qdemi.baihongyu.com/