📄 csdn技术中心 cuj：标准库：allocator能做什么？.mht
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<TD width=3D500> <SPAN=20
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Austern</SPAN></TD></TR>
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<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt; =
TEXT-ALIGN: center"=20
align=3Dcenter><B><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 16pt; mso-bidi-font-size: 12.0pt">The =
Standard=20
Librarian: What Are Allocators Good =
For?<o:p></o:p></SPAN></B></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt; =
TEXT-ALIGN: center"=20
align=3Dcenter><SPAN lang=3DEN-US><FONT size=3D3>Matt=20
Austern</FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN=20
lang=3DEN-US><FONT=20
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size=3D3>http://www.cuj.com/experts/1812/austern.htm?topic=3Dexperts</FON=
T></SPAN></P>
<P class=3DMsoPlainText style=3D"MARGIN: 0cm 0cm 0pt"><SPAN=20
lang=3DEN-US><FONT face=3D=CB=CE=CC=E5=20
=
size=3D3>----------------------------------------------------------------=
----------------</FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><FONT =
size=3D3><SPAN=20
lang=3DEN-US>Allocator</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-hansi-font-family: =
'Times New Roman'; mso-ascii-font-family: 'Times New =
Roman'">=CA=C7</SPAN><SPAN=20
lang=3DEN-US>C++</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-hansi-font-family: =
'Times New Roman'; mso-ascii-font-family: 'Times New =
Roman'">=D3=EF=D1=D4=B1=EA=D7=BC=BF=E2=D6=D0=D7=EE=C9=F1=C3=D8=B5=C4=B2=BF=
=B7=D6=D6=AE=D2=BB=A1=A3=CB=FC=C3=C7=BA=DC=C9=D9=B1=BB=CF=D4=CA=BD=CA=B9=D3=
=C3=A3=AC=B1=EA=D7=BC=D2=B2=C3=BB=D3=D0=C3=F7=C8=B7=B3=F6=CB=FC=C3=C7=D3=A6=
=B8=C3=D4=DA=CA=B2=C3=B4=CA=B1=BA=F2=B1=BB=CA=B9=D3=C3=A1=A3=BD=F1=CC=EC=B5=
=C4</SPAN><SPAN=20
lang=3DEN-US>allocator</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-hansi-font-family: =
'Times New Roman'; mso-ascii-font-family: 'Times New =
Roman'">=D3=EB=D7=EE=B3=F5=B5=C4</SPAN><SPAN=20
lang=3DEN-US>STL</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-hansi-font-family: =
'Times New Roman'; mso-ascii-font-family: 'Times New =
Roman'">=BD=A8=D2=E9=B7=C7=B3=A3=B2=BB=CD=AC=A3=AC=D4=DA=B4=CB=B9=FD=B3=CC=
=D6=D0=BB=B9=B4=E6=D4=DA=D7=C5=C1=ED=CD=E2=C1=BD=B8=F6=C9=E8=BC=C6=A3=AD=A3=
=AD=D5=E2=C1=BD=B8=F6=B6=BC=D2=C0=C0=B5=D3=DA=D3=EF=D1=D4=B5=C4=D2=BB=D0=A9=
=CC=D8=D0=D4=A3=AC=B6=F8=D6=B1=B5=BD=D7=EE=BD=FC=B2=C5=D4=DA=BA=DC=C9=D9=B5=
=C4=BC=B8=B8=F6=B1=E0=D2=EB=C6=F7=C9=CF=BF=C9=D3=C3=A1=A3=B6=D4</SPAN><SP=
AN=20
lang=3DEN-US>allocator</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-hansi-font-family: =
'Times New Roman'; mso-ascii-font-family: 'Times New =
Roman'">=B5=C4=B9=A6=C4=DC=A3=AC=B1=EA=D7=BC=CB=C6=BA=F5=D4=DA=D2=BB=D0=A9=
=B7=BD=C3=E6=D7=B7=BC=D3=C1=CB=B3=D0=C5=B5=A3=AC=B6=F8=D4=DA=C1=ED=CD=E2=D2=
=BB=D0=A9=B7=BD=C3=E6=B3=B7=CF=FA=C1=CB=B3=D0=C5=B5=A1=A3</SPAN></FONT></=
P>
<P class=3DMsoPlainText style=3D"MARGIN: 0cm 0cm 0pt"><SPAN=20
lang=3DEN-US><FONT size=3D3><FONT face=3D=CB=CE=CC=E5><SPAN=20
style=3D"mso-tab-count: 1"> =20
=
</SPAN>=D5=E2=C6=AA=D7=A8=C0=B8=CE=C4=D5=C2=BD=AB=CC=D6=C2=DB=C4=E3=C4=DC=
=D3=C3allocator=C0=B4=D7=F6=CA=B2=C3=B4=D2=D4=BC=B0=C8=E7=BA=CE=B6=A8=D2=E5=
=D2=BB=B8=F6=D7=D4=BC=BA=B5=C4=B0=E6=B1=BE=A1=A3=CE=D2=D6=BB=BB=E1=CC=D6=C2=
=DBC++=B1=EA=D7=BC=CB=F9=B6=A8=D2=E5=B5=C4allocator=A3=BA=D2=FD=C8=EB=D7=BC=
=B1=EA=D7=BC=CA=B1=B4=FA=B5=C4=C9=E8=BC=C6=A3=AC=BB=F2=CA=D4=CD=BC=C8=C6=B9=
=FD=D3=D0=C8=B1=CF=DD=B5=C4=B1=E0=D2=EB=C6=F7=A3=AC=D6=BB=BB=E1=D4=F6=BC=D3=
=BB=EC=C2=D2=A1=A3</FONT></FONT></SPAN></P>
<H3 style=3D"MARGIN: auto 0cm"><FONT =
face=3D=CB=CE=CC=E5>=CA=B2=C3=B4=CA=B1=BA=F2=B2=BB=CA=B9=D3=C3<SPAN=20
lang=3DEN-US>Allocator</SPAN></FONT></H3>
<P class=3DMsoPlainText style=3D"MARGIN: 0cm 0cm 0pt"><SPAN=20
lang=3DEN-US><FONT size=3D3><FONT face=3D=CB=CE=CC=E5><SPAN=20
style=3D"mso-tab-count: 1"> =20
=
</SPAN>C++=B1=EA=D7=BC=D6=D0=B5=C4Allocator=B7=D6=B3=C9=C1=BD=BF=E9=A3=BA=
=D2=BB=B8=F6=CD=A8=D3=C3=D0=E8=C7=F3=BC=AF=A3=A8=C3=E8=CA=F6=D3=DA=A1=EC =
20.1.5(=B1=ED=20
=
32)=A3=A9=A3=AC=BA=CD=BD=D0std::allocator=B5=C4class=A3=A8=C3=E8=CA=F6=D3=
=DA=A1=EC20.4.1=A3=A9=A1=A3=C8=E7=B9=FB=D2=BB=B8=F6class=C2=FA=D7=E3=B1=ED=
32=B5=C4=D0=E8=C7=F3=A3=AC=CE=D2=C3=C7=BE=CD=B3=C6=CB=FC=CE=AA=D2=BB=B8=F6=
allocator=A1=A3std::allocator=C0=E0=C2=FA=D7=E3=C4=C7=D0=A9=D0=E8=C7=F3=A3=
=AC=D2=F2=B4=CB=CB=FC=CA=C7=D2=BB=B8=F6allocator=A1=A3=CB=FC=CA=C7=B1=EA=D7=
=BC=B3=CC=D0=F2=BF=E2=D6=D0=B5=C4=CE=A8=D2=BB=D2=BB=B8=F6=D4=A4=CF=C8=B6=A8=
=D2=E5allocator=C0=E0=A1=A3</FONT></FONT></SPAN></P>
<P class=3DMsoPlainText style=3D"MARGIN: 0cm 0cm 0pt"><SPAN=20
lang=3DEN-US><FONT size=3D3><FONT face=3D=CB=CE=CC=E5><SPAN=20
style=3D"mso-tab-count: 1"> =
</SPAN>=C3=BF=B8=F6=20
=
C++=B3=CC=D0=F2=D4=B1=B6=BC=D2=D1=BE=AD=D6=AA=B5=C0=B6=AF=CC=AC=C4=DA=B4=E6=
=B7=D6=C5=E4=A3=BA=D0=B4=CF=C2new =
X=C0=B4=B7=D6=C5=E4=C4=DA=B4=E6=BA=CD=B4=B4=BD=A8=D2=BB=B8=F6X=C0=E0=D0=CD=
=B5=C4=D0=C2=B6=D4=CF=F3=A3=AC=D0=B4=CF=C2delete=20
=
p=C0=B4=CF=FA=BB=D9p=CB=F9=D6=B8=B5=C4=B6=D4=CF=F3=B2=A2=B9=E9=BB=B9=C6=E4=
=C4=DA=B4=E6=A1=A3=C4=E3=D3=D0=C0=ED=D3=C9=C8=CF=CE=AAallocator=BB=E1=CA=B9=
=D3=C3new=BA=CDdelete=A3=AD=A3=AD=B5=AB=CB=FC=C3=C7=C3=BB=D3=D0=A1=A3=A3=A8=
C++=B1=EA=D7=BC=BD=AB::operator=20
new()=C3=E8=CA=F6=CE=AA=A1=B0allocation=20
=
function=A1=B1=A3=AC=B5=AB=BA=DC=C6=E6=B9=D6=A3=ACallocator=B2=A2=B2=BB=CA=
=C7=D5=E2=D1=F9=B5=C4=A1=A3=A3=A9</FONT></FONT></SPAN></P>
<P class=3DMsoPlainText style=3D"MARGIN: 0cm 0cm 0pt"><SPAN=20
lang=3DEN-US><FONT size=3D3><FONT face=3D=CB=CE=CC=E5><SPAN=20
style=3D"mso-tab-count: 1"> =20
=
</SPAN>=D3=D0=B9=D8allocator=B5=C4=D7=EE=D6=D8=D2=AA=B5=C4=CA=C2=CA=B5=CA=
=C7=CB=FC=C3=C7=D6=BB=CA=C7=CE=AA=C1=CB=D2=BB=B8=F6=C4=BF=B5=C4=A3=BA=B7=E2=
=D7=B0STL=C8=DD=C6=F7=D4=DA=C4=DA=B4=E6=B9=DC=C0=ED=C9=CF=B5=C4=B5=CD=B2=E3=
=CF=B8=BD=DA=A1=A3=C4=E3=B2=BB=D3=A6=B8=C3=D4=DA=D7=D4=BC=BA=B5=C4=B4=FA=C2=
=EB=D6=D0=D6=B1=BD=D3=B5=F7=D3=C3allocator=B5=C4=B3=C9=D4=B1=BA=AF=CA=FD=A3=
=AC=B3=FD=B7=C7=D5=FD=D4=DA=D0=B4=D2=BB=B8=F6=D7=D4=BC=BA=B5=C4STL=C8=DD=C6=
=F7=A1=A3=C4=E3=B2=BB=D3=A6=B8=C3=CA=D4=CD=BC=CA=B9=D3=C3allocator=C0=B4=CA=
=B5=CF=D6operator=20
=
new[]=A3=BB=D5=E2=B2=BB=CA=C7allocator=B8=C3=D7=F6=B5=C4=A1=A3=20
=
=C8=E7=B9=FB=C4=E3=B2=BB=C8=B7=B6=A8=CA=C7=B7=F1=D0=E8=D2=AA=CA=B9=D3=C3a=
llocator=A3=AC=C4=C7=BE=CD=B2=BB=D2=AA=D3=C3=A1=A3</FONT></FONT></SPAN></=
P>
<P class=3DMsoPlainText style=3D"MARGIN: 0cm 0cm 0pt"><SPAN=20
lang=3DEN-US><FONT size=3D3><FONT face=3D=CB=CE=CC=E5><SPAN=20
style=3D"mso-tab-count: 1"> =20
=
</SPAN>allocator=CA=C7=D2=BB=B8=F6=C0=E0,=D3=D0=D7=C5=BD=D0allocate()=BA=CD=
deallocate()=B3=C9=D4=B1=BA=AF=CA=FD=A3=A8=CF=E0=B5=B1=D3=DAmalloc=BA=CDf=
ree=A3=A9=A1=A3=CB=FC=BB=B9=D3=D0=D3=C3=D3=DA=CE=AC=BB=A4=CB=F9=B7=D6=C5=E4=
=B5=C4=C4=DA=B4=E6=B5=C4=B8=A8=D6=FA=BA=AF=CA=FD=BA=CD=D6=B8=CA=BE=C8=E7=BA=
=CE=CA=B9=D3=C3=D5=E2=D0=A9=C4=DA=B4=E6=B5=C4typedef=A3=A8=D6=B8=D5=EB=BB=
=F2=D2=FD=D3=C3=C0=E0=D0=CD=B5=C4=C3=FB=D7=D6=A3=A9=A1=A3=C8=E7=B9=FB=D2=BB=
=B8=F6STL=C8=DD=C6=F7=CA=B9=D3=C3=D3=C3=BB=A7=CC=E1=B9=A9=B5=C4allocator=C0=
=B4=B7=D6=C5=E4=CB=FC=CB=F9=D0=E8=B5=C4=CB=F9=D3=D0=C4=DA=B4=E6(=D4=A4=B6=
=A8=D2=E5=B5=C4STL=C8=DD=C6=F7=C8=AB=B6=BC=C4=DC=D5=E2=C3=B4=D7=F6=A3=BB=CB=
=FB=C3=C7=B6=BC=D3=D0=D2=BB=B8=F6=C4=A3=B0=E5=B2=CE=CA=FD=A3=AC=C6=E4=C4=AC=
=C8=CF=D6=B5=CA=C7std::allocator)=A3=AC=C4=E3=BE=CD=C4=DC=CD=A8=B9=FD=CC=E1=
=B9=A9=D7=D4=BC=BA=B5=C4allocator=C0=B4=BF=D8=D6=C6=CB=FC=B5=C4=C4=DA=B4=E6=
=B9=DC=C0=ED=A1=A3</FONT></FONT></SPAN></P>
<P class=3DMsoPlainText style=3D"MARGIN: 0cm 0cm 0pt"><SPAN=20
lang=3DEN-US><FONT size=3D3><FONT face=3D=CB=CE=CC=E5><SPAN=20
style=3D"mso-tab-count: 1"> =20
=
</SPAN>=D5=E2=D6=D6=C8=E1=D0=D4=CA=C7=D3=D0=CF=DE=D6=C6=B5=C4=A3=BA=C8=D4=
=C8=BB=D3=C9=C8=DD=C6=F7=D7=D4=BC=BA=BE=F6=B6=A8=CB=FC=BD=AB=D2=AA=C9=EA=C7=
=EB=B6=E0=C9=D9=C4=DA=B4=E6=D2=D4=BC=B0=C8=E7=BA=CE=CA=B9=D3=C3=CB=FC=C3=C7=
=A1=A3=D4=DA=C8=DD=C6=F7=C9=EA=C7=EB=B8=FC=B6=E0=B5=C4=C4=DA=B4=E6=CA=B1=A3=
=AC=C4=E3=C4=DC=BF=D8=D6=C6=CB=FC=B5=F7=D3=C3=C4=C7=B8=F6=B5=CD=B2=E3=BA=AF=
=CA=FD=A3=AC=B5=AB=CA=C7=C4=E3=B2=BB=C4=DC=CD=A8=B9=FD=CA=B9=D3=C3allocat=
or=C0=B4=C8=C3=D2=BB=B8=F6vector=D0=D0=B6=AF=C6=F0=C0=B4=CF=F1=D2=BB=B8=F6=
deque=D2=BB=D1=F9=A1=A3=CB=E4=C8=BB=C8=E7=B4=CB=A3=AC=D3=D0=CA=B1=BA=F2=A3=
=AC=D5=E2=B8=F6=CA=DC=CF=DE=B5=C4=C8=E1=D0=D4=D2=B2=BA=DC=D3=D0=D3=C3=A1=A3=
=B1=C8=C8=E7=A3=AC=BC=D9=C9=E8=C4=E3=D3=D0=D2=BB=B8=F6=CC=D8=CA=E2=B5=C4f=
ast_allocator=A3=AC=C4=DC=BF=EC=CB=D9=B7=D6=C5=E4=BA=CD=CA=CD=B7=C5=C4=DA=
=B4=E6=A3=A8=D2=B2=D0=ED=CD=A8=B9=FD=B7=C5=C6=FA=CF=DF=B3=CC=B0=B2=C8=AB=D0=
=D4=A3=AC=BB=F2=CA=B9=D3=C3=D2=BB=B8=F6=D0=A1=B5=C4=BE=D6=B2=BF=B6=D1=A3=A9=
=A3=AC=C4=E3=C4=DC=CD=A8=B9=FD=D0=B4=CF=C2std::list<T,=20
fast_allocator<T>=20
=
>=B6=F8=B2=BB=CA=C7=BC=F2=B5=A5=B5=C4std::list<T>=C0=B4=C8=C3=B1=
=EA=D7=BC=B5=C4list=CA=B9=D3=C3=CB=FC=A1=A3</FONT></FONT></SPAN></P>
<P class=3DMsoPlainText style=3D"MARGIN: 0cm 0cm 0pt"><SPAN=20
lang=3DEN-US><FONT size=3D3><FONT face=3D=CB=CE=CC=E5><SPAN=20
style=3D"mso-tab-count: 1"> =20
=
</SPAN>=C8=E7=B9=FB=D5=E2=BF=B4=C6=F0=C0=B4=B6=D4=C4=E3=BA=DC=C4=B0=C9=FA=
=A3=AC=C4=C7=BE=CD=B6=D4=C1=CB=A1=A3=C3=BB=D3=D0=C0=ED=D3=C9=D4=DA=B3=A3=B9=
=E6=B4=FA=C2=EB=D6=D0=CA=B9=D3=C3allocator=B5=C4=A1=A3</FONT></FONT></SPA=
N></P>
<H3 style=3D"MARGIN: auto 0cm"><FONT =
face=3D=CB=CE=CC=E5>=B6=A8=D2=E5=D2=BB=B8=F6<SPAN=20
lang=3DEN-US>Allocator</SPAN></FONT></H3>
<P class=3DMsoPlainText style=3D"MARGIN: 0cm 0cm 0pt"><SPAN=20
lang=3DEN-US><FONT size=3D3><FONT face=3D=CB=CE=CC=E5><SPAN=20
style=3D"mso-tab-count: 1"> =20
=
</SPAN>=B9=D8=D3=DAallocator=B5=C4=D5=E2=D2=BB=B5=E3=C4=E3=D2=D1=BE=AD=BF=
=B4=B5=BD=C1=CB=A3=BA=CB=FC=C3=C7=CA=C7=C4=A3=B0=E5=A1=A3Allocator=A3=AC=BA=
=CD=C8=DD=C6=F7=D2=BB=D1=F9=A3=AC=D3=D0value_type=A3=AC=B6=F8=C7=D2alloca=
tor=B5=C4value_type=B1=D8=D0=EB=D2=AA=C6=A5=C5=E4=D3=DA=CA=B9=D3=C3=CB=FC=
=B5=C4=C8=DD=C6=F7=B5=C4value_type=A1=A3=D5=E2=D3=D0=CA=B1=BB=E1=B1=C8=BD=
=CF=B3=F3=C2=AA=A3=BAmap=B5=C4value_type=CF=E0=B5=B1=B8=B4=D4=D3=A3=AC=CB=
=F9=D2=D4=CF=D4=CA=BD=B5=F7=D3=C3allocator=B5=C4map=BF=B4=C6=F0=C0=B4=CF=F3=
=D5=E2=D1=F9=B5=C4=A3=ACstd::map<K=A3=ACV,=20
fast_allocator<std::pair<const K, V> >=20
=
>=A1=A3(=CF=F1=CD=F9=B3=A3=D2=BB=D1=F9=A3=ACtypedef=BB=E1=B6=D4=B4=CB=D3=
=D0=B0=EF=D6=FA=A1=A3)</FONT></FONT></SPAN></P>
<P class=3DMsoPlainText style=3D"MARGIN: 0cm 0cm 0pt"><SPAN=20
lang=3DEN-US><FONT size=3D3><FONT face=3D=CB=CE=CC=E5><SPAN=20
style=3D"mso-tab-count: 1"> =20
=
</SPAN>=D2=D4=D2=BB=B8=F6=BC=F2=B5=A5=B5=C4=C0=FD=D7=D3=BF=AA=CA=BC=A1=A3=
=B8=F9=BE=DDC++=B1=EA=D7=BC=A3=ACstd::allocator=B9=B9=BD=A8=D4=DA::operat=
or=20
=
new()=C9=CF=A1=A3=C8=E7=B9=FB=C4=E3=D5=FD=D4=DA=CA=B9=D3=C3=D2=BB=B8=F6=D7=
=D4=B6=AF=BB=AF=C4=DA=B4=E6=CA=B9=D3=C3=B8=FA=D7=D9=B9=A4=BE=DF=A3=AC=C8=C3=
std::allocator=B8=FC=BC=F2=B5=A5=D0=A9=BB=E1=B8=FC=B7=BD=B1=E3=A1=A3=CE=D2=
=C3=C7=BF=C9=D2=D4=D3=C3malloc()=B4=FA=CC=E6::operator=20
=
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