Mail Archives: cygwin-apps/2000/06/10/20:02:52

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Mail Archives: cygwin-apps/2000/06/10/20:02:52

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Message-ID: <006301bfd338$a964d450$f7c723cb@lifelesswks>

From: "Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>

To: <cygwin-apps AT sourceware DOT cygnus DOT com>

Subject: fnctl nonblocking still blocking

Date: Sun, 11 Jun 2000 10:04:48 +1000

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Hi,
    I am working on porting Squid to cygwin, I posted before about a =
problem with accept() stopping on the second call to it.

I have tracked it down to the socket still blocking on io when there is =
no pending connection, even though the earlier call to fnctl was =
successful.

The call made is (fcntl(fd, F_SETFL, flags | SQUID_NONBLOCK) < 0),=20
where flags was retrieved by a prior call to F_GETFL, and SQUID_NONBLOCK =
is #defined to be O_NONBLOCK, I have also tried O_NDELAY with the same =
results.

My question(s) are:=20
what is the official status of non-blocking accept() calls in cygwin =
1.1.2?
where in the winsup source is fcntl implemented? I found a call to =
_fcntl but could find where that has been implemented to follow =
through...

cygcheck -s -v -r attached

Thanks in advance,
Rob


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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3D"text/html; charset=3Diso-8859-1" =
http-equiv=3DContent-Type>
<META content=3D"MSHTML 5.00.3017.1000" name=3DGENERATOR>
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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hi,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;&nbsp;&nbsp; I am working on =
porting Squid to=20
cygwin, I posted before about a problem with accept() stopping on the =
second=20
call to it.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I have tracked it down to the socket =
still blocking=20
on io when there is no pending connection, even though the earlier call =
to fnctl=20
was successful.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>The call made is (fcntl(fd, F_SETFL, =
flags |=20
SQUID_NONBLOCK) &lt; 0), </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>where flags was retrieved by a prior =
call to=20
F_GETFL, and</FONT><FONT face=3DArial size=3D2> SQUID_NONBLOCK is =
#defined to be=20
O_NONBLOCK, I have also tried O_NDELAY with the same =
results.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>My question(s) are: </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>what is the official status of =
non-blocking=20
accept() calls in cygwin 1.1.2?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>where in the winsup source is fcntl =
implemented? I=20
found a call to _fcntl but could find where that has been implemented to =
follow=20
through...</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>cygcheck -s -v -r attached</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Thanks in advance,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Rob</FONT></DIV>
<DIV>&nbsp;</DIV></BODY></HTML>

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Cygnus Win95/NT Configuration Diagnostics
Current System Time: Sun Jun 11 10:03:14 2000

WinNT Ver 5.0 build 2195=20

Path:	/usr/bin
	/usr/local/bin
	/e/WINNT/system32
	/e/WINNT
	/e/WINNT/System32/Wbem
	/usr/bin
	/usr/local/bin
	/cygdrive/f/Program Files/Microsoft Visual Studio/Common/Tools/WinNT
	/cygdrive/f/Program Files/Microsoft Visual Studio/Common/MSDev98/Bin
	/cygdrive/f/Program Files/Microsoft Visual Studio/Common/Tools
	/cygdrive/f/Program Files/Microsoft Visual Studio/VC98/bin
	/cygdrive/s/ACCPAC/CA_APPSW

SysDir: E:\WINNT\System32
WinDir: E:\WINNT

MAKE_MODE =3D `unix'
PWD =3D `/usr/local/squid'

!:: =3D `::\'
!E: =3D `E:\'
ALLUSERSPROFILE =3D `E:\Documents and Settings\All Users'
APPDATA =3D `E:\Documents and Settings\Administrator\Application Data'
CLASSPATH =3D `E:\Program Files\HEAT\navbar;%CLASSPATH%'
COMMONPROGRAMFILES =3D `E:\Program Files\Common Files'
COMPUTERNAME =3D `LIFELESSWKS'
COMSPEC =3D `E:\WINNT\system32\cmd.exe'
FSERVER =3D `tcp/195.114.67.85:19114'
HOMEDRIVE =3D `E:'
HOMEPATH =3D `\'
HOSTNAME =3D `LIFELESSWKS'
HOSTTYPE =3D `i586'
INCLUDE =3D `F:\Program Files\Microsoft Visual =
Studio\VC98\atl\include;F:\Program Files\Microsoft Visual =
Studio\VC98\mfc\include;F:\Program Files\Microsoft Visual =
Studio\VC98\include'
LIB =3D `F:\Program Files\Microsoft Visual =
Studio\VC98\mfc\lib;F:\Program Files\Microsoft Visual Studio\VC98\lib'
LOGONSERVER =3D `\\LIFELESSWKS'
MACHTYPE =3D `i586-pc-cygwin'
MSDEVDIR =3D `F:\Program Files\Microsoft Visual Studio\Common\MSDev98'
NUMBER_OF_PROCESSORS =3D `1'
OLDPWD =3D `/usr/src/sq/squid-2.3.STABLE3/src'
OS2LIBPATH =3D `E:\WINNT\system32\os2\dll;'
OS =3D `Windows_NT'
OSTYPE =3D `cygwin'
PATHEXT =3D `.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH'
PROCESSOR_ARCHITECTURE =3D `x86'
PROCESSOR_IDENTIFIER =3D `x86 Family 6 Model 7 Stepping 2, GenuineIntel'
PROCESSOR_LEVEL =3D `6'
PROCESSOR_REVISION =3D `0702'
PROGRAMFILES =3D `E:\Program Files'
PROMPT =3D `$P$G'
SHELL =3D `/bin/sh'
SHLVL =3D `1'
SYSTEMDRIVE =3D `E:'
SYSTEMROOT =3D `E:\WINNT'
TEMP =3D `E:\DOCUME~1\ADMINI~1\LOCALS~1\Temp'
TERM =3D `cygwin'
TMP =3D `E:\DOCUME~1\ADMINI~1\LOCALS~1\Temp'
USERDOMAIN =3D `LIFELESSWKS'
USERNAME =3D `administrator'
USERPROFILE =3D `E:\Documents and Settings\Administrator'
WINDIR =3D `E:\WINNT'
_ =3D `/usr/bin/cygcheck'
TZ =3D `AUSEST-10AUSEDT-11,M10.5.0/2,M3.5.0/2'

HKEY_CURRENT_USER\Software\Cygnus Solutions
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
  (default) =3D `/cygdrive'
  cygdrive flags =3D 0x00000020
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/
  (default) =3D `E:\cygwin'
  flags =3D 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/e
  (default) =3D `e:'
  flags =3D 0x00000000
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
  (default) =3D `E:\cygwin\bin'
  flags =3D 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
  (default) =3D `E:\cygwin\lib'
  flags =3D 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\00
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\01
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\02
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\03
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\04
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\05
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\06
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\07
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\08
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\09
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\0A
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\0B
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\0C
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\0D
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\0E
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\0F
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\10
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\11
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\12
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\13
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\14
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\15
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\16
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\17
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\18
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\19
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\1A
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\1B
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\1C
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\1D
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Menu=
Order\Start Menu\Programs\Cygnus Solutions
  (default) =3D (unsupported type)
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Installed Components
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Installed =
Components\E:/cygwin
  (default) =3D `20000517'
  bash =3D `0002.0004.0001'
  binutils =3D `19990818.0001'
  bison =3D `0000'
  byacc =3D `0000'
  bzip =3D `0000'
  clear =3D `0001.0000'
  cygwin =3D `0001.0001.0002'
  dejagnu =3D `0000'
  diff =3D `0000'
  expect =3D `0000'
  fileutils =3D `0000'
  findutils =3D `0000'
  flex =3D `0000'
  gawk =3D `0000'
  gcc =3D `0002.0095.0002.0001'
  gdb =3D `20000415'
  gperf =3D `0000'
  grep =3D `0000'
  groff =3D `0001.011a.0001'
  gzip =3D `0000'
  inetutils =3D `0001.0003.0002.0002'
  less =3D `0000'
  libpng =3D `0001.0000.0006.0001'
  login =3D `0001.0002'
  m =3D `0000'
  make =3D `0003.0079'
  man =3D `0001.005g.0002'
  patch =3D `0000'
  sed =3D `0003.0002.0001'
  shellutils =3D `0000'
  tar =3D `0000'
  tcltk =3D `0000'
  termcap =3D `0002'
  texinfo =3D `0000'
  textutils =3D `0000'
  time =3D `0000'
  zlib =3D `0001.0001.0003.0001'
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts =
v2\/usr/install
  (default) =3D `d:install'
  flags =3D 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\00
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\01
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\02
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\03
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\04
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\05
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\06
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\07
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\08
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\09
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\0A
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\0B
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\0C
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\0D
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\0E
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\0F
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\10
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\11
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\12
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\13
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\14
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\15
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\16
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\17
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\18
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\19
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\1A
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\1B
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\1C
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL =
setup\b15.0\mounts\1D

a:  fd           N/A    N/A                   =20
c:  hd  FAT      101Mb  80% CP    UN          =20
d:  hd  NTFS    4337Mb  88% CP CS UN PA FC    =20
e:  hd  NTFS    4479Mb 100% CP CS UN PA FC    =20
f:  hd  NTFS    4133Mb  40% CP CS UN PA FC    =20
g:  cd           N/A    N/A                   =20
h:  cd  CDFS     575Mb 100%    CS              BG Disc 2

E:\cygwin\bin  /usr/bin  user    binmode
E:\cygwin\lib  /usr/lib  user    binmode
E:\cygwin  /        user    binmode
d:install  /usr/install  system  binmode
e:    /e       user    textmode

Found: E:\cygwin\bin\bash.exe
Found: E:\cygwin\bin\cat.exe
Found: E:\cygwin\bin\cpp.exe
Found: E:\cygwin\bin\find.exe
Found: E:\cygwin\bin\gcc.exe
Found: E:\cygwin\bin\gdb.exe
Found: E:\cygwin\bin\ld.exe
Found: E:\cygwin\bin\ls.exe
Found: E:\cygwin\bin\make.exe
Found: E:\cygwin\bin\sh.exe

  115k 1999/09/14 E:\cygwin\bin\cygitcl30.dll - os=3D4.0 img=3D1.0 =
sys=3D4.0
                  "cygitcl30.dll" v0.0 ts=3D1999/9/14 12:46
   63k 1999/09/14 E:\cygwin\bin\cygitk30.dll - os=3D4.0 img=3D1.0 =
sys=3D4.0
                  "cygitk30.dll" v0.0 ts=3D1999/9/14 12:47
  474k 1999/09/14 E:\cygwin\bin\cygtcl80.dll - os=3D4.0 img=3D1.0 =
sys=3D4.0
                  "cygtcl80.dll" v0.0 ts=3D1999/9/14 12:31
   19k 1999/09/14 E:\cygwin\bin\cygtclpip80.dll - os=3D4.0 img=3D1.0 =
sys=3D4.0
   24k 1999/09/14 E:\cygwin\bin\cygtclreg80.dll - os=3D4.0 img=3D1.0 =
sys=3D4.0
                  "cygtclreg80.dll" v0.0 ts=3D1999/9/14 12:31
  768k 1999/09/14 E:\cygwin\bin\cygtk80.dll - os=3D4.0 img=3D1.0 =
sys=3D4.0
                  "cygtk80.dll" v0.0 ts=3D1999/9/14 12:36
  575k 2000/06/07 E:\cygwin\bin\cygwin1.dll - os=3D4.0 img=3D1.0 =
sys=3D4.0
                  "cygwin1.dll" v0.0 ts=3D2000/6/7 12:20
Use -h to see help about each section

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webmaster	delorie software privacy
Copyright � 2019 by DJ Delorie	Updated Jul 2019

Mailing-List:	contact cygwin-apps-help AT sourceware DOT cygnus DOT com; run by ezmlm
list-help:	<mailto:cygwin-apps-help AT sourceware DOT cygnus DOT com>
list-post:	<mailto:cygwin-apps AT sourceware DOT cygnus DOT com>
Sender:	cygwin-apps-owner AT sourceware DOT cygnus DOT com
Delivered-To:	mailing list cygwin-apps AT sourceware DOT cygnus DOT com
Message-ID:	<006301bfd338$a964d450$f7c723cb@lifelesswks>
From:	"Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To:	<cygwin-apps AT sourceware DOT cygnus DOT com>
Subject:	fnctl nonblocking still blocking
Date:	Sun, 11 Jun 2000 10:04:48 +1000
MIME-Version:	1.0
X-Priority:	3
X-MSMail-Priority:	Normal
X-Mailer:	Microsoft Outlook Express 5.00.2919.6700
X-MimeOLE:	Produced By Microsoft MimeOLE V5.00.2919.6700