📄 ch31.mht
字号:
<TD =
width=3D"50%"></TD></TR></TBODY></TABLE></CENTER></DIV><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> =
=D6=B1=BD=D3=F1=EE=BA=CF=CF=B5=CD=B3=A3=BA</FONT></PRE>
<DIV align=3Dcenter>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"81%" border=3D0>
<TBODY>
<TR>
<TD width=3D"66%"><IMG height=3D162=20
=
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/ch3103.g=
if"=20
width=3D366></TD>
<TD width=3D"34%"><PRE><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 =
size=3D3>=D6=F7=BB=FA=D3=EB=CE=C0=D0=C7=BB=FA=B7=D6=B9=A4=C3=F7=C8=B7=A3=BA=
</FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> =
=D6=F7=BB=FA=A1=AA=A1=AA=BC=C6=CB=E3</FONT></PRE><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> =
=CE=C0=D0=C7=BB=FA=A1=AA=A1=AA</FONT><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 =
size=3D4><STRONG>I/O</STRONG></FONT></PRE></TD></TR></TBODY></TABLE></CEN=
TER></DIV>
<DIV align=3Dright><PRE><A =
name=3D=D7=F7=D2=B5=B5=F7=B6=C8></A><!--webbot bot=3D"ImageMap" =
rectangle=3D"(2,2) (144,32) #%e9%a1%b5%e5%a4%b4" =
src=3D"../images/BACKHEAD.GIF" border=3D"0" alt=3D"BACKHEAD.GIF (2500 =
bytes)" startspan --><MAP name=3DFrontPageMap8><AREA shape=3DRECT =
coords=3D2,2,144,32 =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/pages/ch31.htm=
#=D2=B3=CD=B7"></MAP><A =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/_vti_bin/shtml.dll/chap=
ter3/pages/ch31.htm/map8"><IMG height=3D33 alt=3D"BACKHEAD.GIF (2500 =
bytes)" isMap =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/BACKHEAD=
.GIF" width=3D145 useMap=3D#FrontPageMap8 border=3D0></A><!--webbot =
bot=3D"ImageMap" endspan i-checksum=3D"3105" =
--></PRE></DIV></TD></TR></TBODY></TABLE>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"90%" border=3D0>
<TBODY>
<TR>
<TD width=3D"100%"><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 =
size=3D3><IMG height=3D25 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/EYEBALL.=
GIF" width=3D25> </FONT><IMG height=3D26 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/t3104.gi=
f" width=3D72></PRE></TD></TR>
<TR>
<TD width=3D"100%"><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 =
size=3D3> <IMG height=3D15 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/angle.GI=
F" width=3D14></FONT><FONT face=3D=CB=CE=CC=E5 color=3D#800080 =
size=3D3><STRONG>=D7=F7=D2=B5=BF=D8=D6=C6=BF=E9=A3=A8JCB=A3=A9</STRONG></=
FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> =
=C4=DA=C8=DD=CE=AA=A3=BA<IMG height=3D16 alt=3D"LREDP.GIF (158 =
bytes)" =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/LREDP.GI=
F" width=3D16>=D7=F7=D2=B5=C3=FB</FONT></PRE><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> <IMG =
height=3D16 alt=3D"L=BB=C6=C9=ABP.GIF (158 bytes)" =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/LyP.GIF"=
width=3D16>=D7=CA=D4=B4=D2=AA=C7=F3</FONT></PRE><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> <IMG =
height=3D16 alt=3D"LBLUEP2.GIF (906 bytes)" =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/LBLUEP2.=
GIF" =
width=3D16>=D7=CA=D4=B4=CA=B9=D3=C3=C7=E9=BF=F6</FONT></PRE><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> <IMG =
height=3D16 alt=3D"LBULEP.GIF (159 bytes)" =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/LBULEP.G=
IF" =
width=3D16>=D7=F7=D2=B5=C0=E0=D0=CD=BA=CD=BC=B6=B1=F0</FONT></PRE><PRE><F=
ONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> <IMG height=3D15 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/angle.GI=
F" width=3D14></FONT><FONT face=3D=CB=CE=CC=E5 color=3D#800080 =
size=3D3><STRONG>=BA=F3=B1=B8=D7=F7=D2=B5=B6=D3=C1=D0</STRONG></FONT></PR=
E>
<DIV align=3Dcenter>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"77%" border=3D0>
<TBODY>
<TR>
<TD width=3D"50%">
<TABLE cellSpacing=3D0 width=3D"90%" border=3D1>
<TBODY>
<TR>
<TD width=3D"100%" bgColor=3D#ffcab0>
<P align=3Dcenter><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000=20
=
size=3D3><STRONG>=BC=C6=CA=FD=C6=F7</STRONG></FONT></P></TD></TR>
<TR>
<TD width=3D"100%" bgColor=3D#ffcab0>
<P align=3Dcenter><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000=20
size=3D3><STRONG>JCB1</STRONG></FONT></P></TD></TR>
<TR>
<TD width=3D"100%" bgColor=3D#ffcab0>
<P align=3Dcenter><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000=20
size=3D3><STRONG>JCB2</STRONG></FONT></P></TD></TR>
<TR>
<TD width=3D"100%" bgColor=3D#ffcab0>
<P align=3Dcenter><FONT =
face=3DËÎÌå size=3D4>=A9=AB</FONT></P></TD></TR>
<TR>
<TD width=3D"100%" bgColor=3D#ffcab0>
<P align=3Dcenter><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000=20
=
size=3D3><STRONG>JCBn</STRONG></FONT></P></TD></TR></TBODY></TABLE></TD>
<TD =
width=3D"50%"></TD></TR></TBODY></TABLE></CENTER></DIV><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> <IMG height=3D15 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/angle.GI=
F" width=3D14></FONT><FONT face=3D=CB=CE=CC=E5 color=3D#800080 =
size=3D3><STRONG>=D7=F7=D2=B5=B5=F7=B6=C8=B3=CC=D0=F2 =
</STRONG></FONT><!--webbot bot=3D"ImageMap" =
rectangle=3D"(1,1) (144,32) #%e9%a1%b5%e5%a4%b4" =
src=3D"../images/BACKHEAD.GIF" border=3D"0" alt=3D"BACKHEAD.GIF (2500 =
bytes)" startspan --><MAP name=3DFrontPageMap9><AREA shape=3DRECT =
coords=3D1,1,144,32 =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/pages/ch31.htm=
#=D2=B3=CD=B7"></MAP><A =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/_vti_bin/shtml.dll/chap=
ter3/pages/ch31.htm/map9"><IMG height=3D33 alt=3D"BACKHEAD.GIF (2500 =
bytes)" isMap =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/BACKHEAD=
.GIF" width=3D145 useMap=3D#FrontPageMap9 border=3D0></A><!--webbot =
bot=3D"ImageMap" endspan i-checksum=3D"3266" --></PRE><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> =
=D7=F7=D2=B5=B5=F7=B6=C8=B3=CC=D0=F2=B5=C4</FONT><FONT =
face=3D=CB=CE=CC=E5 color=3D#ff0080 =
size=3D3>=D6=F7=D2=AA=B9=A6=C4=DC</FONT><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 =
size=3D3>=CA=C7=C9=F3=B2=E9=CF=B5=CD=B3=C4=DC=B7=F1=C2=FA=D7=E3=D3=C3=BB=A7=
=D7=F7=D2=B5=B5=C4=D7=CA=D4=B4=D2=AA=C7=F3=D2=D4=BC=B0=B0=B4=D5=D5=D2=BB=B6=
=A8=B5=C4=CB=E3</FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3> =
=B7=A8=D1=A1=C8=A1=D7=F7=D2=B5=A1=A3=B5=F7=B6=C8=B5=C4</FONT><FONT =
face=3D=CB=CE=CC=E5 color=3D#ff0080 size=3D3>=B9=D8=BC=FC</FONT><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 =
size=3D3>=D4=DA=D1=A1=D4=F1=CA=CA=B5=B1=B5=C4=CB=E3=B7=A8=A1=A3</FONT></P=
RE>
<DIV align=3Dcenter>
<CENTER><PRE><IMG height=3D416 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/ch3104.g=
if" width=3D312></PRE></CENTER></DIV><PRE><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3> =
<!--webbot bot=3D"ImageMap" rectangle=3D"(2,1) =
(144,32) #%e9%a1%b5%e5%a4%b4" src=3D"../images/BACKHEAD.GIF" =
border=3D"0" alt=3D"BACKHEAD.GIF (2500 bytes)" startspan --><MAP =
name=3DFrontPageMap10><AREA shape=3DRECT coords=3D2,1,144,32 =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/pages/ch31.htm=
#=D2=B3=CD=B7"></MAP><A =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/_vti_bin/shtml.dll/chap=
ter3/pages/ch31.htm/map10"><IMG height=3D33 alt=3D"BACKHEAD.GIF (2500 =
bytes)" isMap =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/BACKHEAD=
.GIF" width=3D145 useMap=3D#FrontPageMap10 border=3D0></A><!--webbot =
bot=3D"ImageMap" endspan i-checksum=3D"12903" --></FONT></PRE><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> <IMG height=3D15 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/angle.GI=
F" width=3D14></FONT><FONT face=3D=CB=CE=CC=E5 color=3D#800080 =
size=3D3><STRONG>=C8=E7=BA=CE=D1=A1=D4=F1=B5=F7=B6=C8=CB=E3=B7=A8</STRONG=
></FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> =
<IMG height=3D19 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/LzQ.GIF"=
=
width=3D19>=B5=F7=B6=C8=CB=E3=B7=A8=B5=C4=C4=BF=B1=EA</FONT></PRE><PRE><F=
ONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> <IMG =
height=3D16 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/LREDP.GI=
F" =
width=3D16>=C3=BF=CC=EC=D4=CB=D0=D0=BE=A1=BF=C9=C4=DC=B6=E0=B5=C4=D7=F7=D2=
=B5=A3=BB</FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 =
size=3D3> <IMG height=3D16 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/LyP.GIF"=
=
width=3D16>=CA=B9=B4=A6=C0=ED=BB=FA=B1=A3=B3=D6=A1=B0=C3=A6=A1=B1=A3=BB</=
FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> =
<IMG height=3D16 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/LBULEP.G=
IF" =
width=3D16>=CA=B9I/O=C9=E8=B1=B8=B5=C3=D2=D4=B3=E4=B7=D6=C0=FB=D3=C3=A3=BB=
</FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> =
<IMG height=3D16 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/LzP.GIF"=
=
width=3D16>=B6=D4=CB=F9=D3=D0=B5=C4=D7=F7=D2=B5=B6=BC=CA=C7=B9=AB=C6=BD=BA=
=CF=C0=ED=A1=A3</FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3> </FONT><IMG height=3D19 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/LREDQ.GI=
F" width=3D19><FONT face=3D=CB=CE=CC=E5 color=3D#000000 =
size=3D3>=D1=A1=D4=F1=B5=F7=B6=C8=CB=E3=B7=A8=B5=C4=D2=C0=BE=DD</FONT></P=
RE><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> =
<IMG height=3D16 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/LFUCHS~1=
.GIF" =
width=3D16>=D1=A1=D4=F1=B5=C4=B5=F7=B6=C8=CB=E3=B7=A8=D3=A6=D3=EB=CF=B5=CD=
=B3=B5=C4=D5=FB=B8=F6=C9=E8=BC=C6=C4=BF=B1=EA=D2=BB=D6=C2</FONT></PRE><PR=
E><FONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> <IMG =
height=3D16 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/LBLUEP2.=
GIF" =
width=3D16>=D7=A2=D2=E2=CF=B5=CD=B3=D7=CA=D4=B4=B5=C4=BE=F9=BA=E2=CA=B9=D3=
=C3</FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> =
<IMG height=3D16 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/LgP.GIF"=
=
width=3D16>=D3=A6=B1=A3=D6=A4=CC=E1=BD=BB=B5=C4=D7=F7=D2=B5=D4=DA=B9=E6=B6=
=A8=B5=C4=BD=D8=D6=B9=CA=B1=BC=E4=C4=DA=CD=EA=B3=C9=A3=AC=B6=F8=C7=D2=D3=A6=
=C9=E8=B7=A8=CB=F5=B6=CC=D7=F7=D2=B5=B5=C4=C6=BD=BE=F9=D6=DC=D7=AA=CA=B1=BC=
=E4</FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> =
<IMG height=3D15 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/angle.GI=
F" width=3D14></FONT><FONT face=3D=CB=CE=CC=E5 color=3D#800080 =
size=3D3><STRONG>=B5=F7=B6=C8=D0=D4=C4=DC=B5=C4=BA=E2=C1=BF</STRONG></FON=
T></PRE>
<DIV align=3Dcenter>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"76%" border=3D0>
<TBODY>
<TR>
<TD width=3D"99%">
<TABLE cellSpacing=3D0 width=3D"84%" border=3D1>
<TBODY>
<TR>
<TD width=3D"47%" bgColor=3D#00d9d9><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000=20
size=3D3>=D7=F7=D2=B5<STRONG> i</STRONG> =
=B5=C4=D6=DC=D7=AA=CA=B1=BC=E4</FONT></TD>
<TD width=3D"29%" bgColor=3D#f5f5f5>
<P align=3Dcenter><STRONG><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000=20
size=3D3>Ti=3DTci-Tsi</FONT></STRONG></P></TD>
<TD width=3D"24%" bgColor=3D#ffcab0><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000=20
=
size=3D3>=A3=A8=D3=C3=BB=A7=BF=BC=C2=C7=A3=A9</FONT></TD></TR>
<TR>
<TD width=3D"47%" bgColor=3D#00d9d9><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000=20
=
size=3D3>=D7=F7=D2=B5=B5=C4=C6=BD=BE=F9=D6=DC=D7=AA=CA=B1=BC=E4</FONT></T=
D>
<TD width=3D"29%" bgColor=3D#f5f5f5>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"98%" =
border=3D0>
<TBODY>
<TR>
<TD width=3D"39%">
<P align=3Dright><STRONG><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000=20
size=3D3>T=3D</FONT></STRONG></P></TD>
<TD width=3D"61%"><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3><IMG=20
height=3D41 alt=3D"ch31f1.jpg (1181 bytes)"=20
=
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter3/images/ch31f1.j=
pg"=20
=
width=3D48></FONT></TD></TR></TBODY></TABLE></TD>
<TD width=3D"24%" bgColor=3D#ffcab0><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000=20
=
size=3D3>=A3=A8=D3=C3=BB=A7=BF=BC=C2=C7=A3=A9</FONT></TD></TR>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -