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1. gcnew·µ»ØµÄÊǸö¾ä±ú(Handle)£¬¶ønew·µ»ØµÄÊÇʵ¼ÊµÄÄÚ´æµØÖ·.
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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;
}
ÌØ±ð×¢Ò⣺±¾Õ¾ËùÓÐ×ªÔØÎÄÕÂÑÔÂÛ²»´ú±í±¾Õ¾¹Ûµã£¬±¾Õ¾ËùÌṩµÄÉãÓ°ÕÕÆ¬£¬²å»£¬Éè¼Æ×÷Æ·£¬ÈçÐèʹÓã¬ÇëÓëÔ×÷ÕßÁªÏµ
¡¡¡¡ÎҰѵ÷ÊÔµÄʱºòJIT±àÒëµÄ»ã±à´úÂëÔñ¼Á˲¿·ÖÈçÏÂÏÔʾ£¨Çë×¢ÒâºìÉ«²¿·Ö£©£º
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;
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