Mail Archives: cygwin/2009/12/07/10:46:25
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Hi everybody!
I have a question regarding the delivery of signals to pthreads in
Cygwin (1.7 beta). As an example, please consider the following
situation (see attached file for source code):
There are two threads, a main thread and another one created by the main
thread.
The main registers a SIGALRM signal handler (sigaction), creates the
other thread (pthread_create), blocks all signals (pthread_sigmask),
then waits for a SIGHUP (sigwait) before joining the other thread
(pthread_join).
The other thread unblocks all signals (pthread_sigmask), then schedules
an alarm (alarm(1)) and goes to sleep (sleep(5)).
In this situation, I had expected the other thread to receive the
SIGALRM, and to wake up from sleep consequently; at least it did in
Linux (2.6.31). However, in Cygwin the signal never arrives, the thread
sleeps the full turn.
It seems the signal gets delivered to the blocked main thread instead,
but attempting to check (sigpending) results in a segmentation fault
(SEGV) for some reason.
If I explictly remove the SIGALRM from the block mask, the signal
handler gets called and sigpending works, but of course this interrupts
sigwait (errno=EINTR), hence this is not a viable workaround for me.
So, is cygwin behaving correctly here (in a POSIX sense), or is this a
bug? Please help me understand.
Thank you,
Karsten Otto
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Cygwin Configuration Diagnostics
Current System Time: Mon Dec 07 16:04:34 2009
Windows XP Professional Ver 5.1 Build 2600 Service Pack 3
Path: C:\cygwin-1.7\usr\local\bin
C:\cygwin-1.7\bin
C:\cygwin-1.7\bin
C:\WINDOWS\system32
C:\WINDOWS
C:\WINDOWS\System32\WbemC
C:\cygwin-1.7\Programme\Java\jdk1.5.0_16\bin
C:\Programme\Vim\vim72\
C:\Programme\Java\apache-ant-1.7.1\bin
C:\Programme\Java\apache-maven-2.2.1\bin
C:\Programme\PostgreSQL\8.3\bin
%HOME%\cunit\bin
C:\Programme\doxygen\bin
C:\Programme\ATI Technologies\ATI.ACE\Core-Static
C:\Programme\android-sdk-windows-1.5_r1\tools\
C:\Programme\SlikSvn\bin\
C:\Programme\QuickTime\QTSystem\
Output from C:\cygwin-1.7\bin\id.exe
UID: 1003(Karsten) GID: 513(Kein)
0(root) 544(Administratoren) 545(Benutzer)
513(Kein)
SysDir: C:\WINDOWS\system32
WinDir: C:\WINDOWS
USER = 'Karsten'
PWD = '/home/Karsten/work/tmp'
CYGWIN = 'tty'
HOME = '/home/Karsten'
HOMEPATH = '\Dokumente und Einstellungen\Karsten'
MANPATH = '/usr/local/man:/usr/share/man:/usr/man::/usr/ssl/man'
APPDATA = 'C:\Dokumente und Einstellungen\Karsten\Anwendungsdaten'
HOSTNAME = 'numbersix'
TERM = 'cygwin'
PROCESSOR_IDENTIFIER = 'x86 Family 6 Model 23 Stepping 10, GenuineIntel'
WINDIR = 'C:\WINDOWS'
OLDPWD = '/home/Karsten/work'
USERDOMAIN = 'NUMBERSIX'
OS = 'Windows_NT'
ALLUSERSPROFILE = 'C:\Dokumente und Einstellungen\All Users'
SVN_EDITOR = 'gvim'
TEMP = '/cygdrive/c/DOKUME~1/Karsten/LOKALE~1/Temp'
COMMONPROGRAMFILES = 'C:\Programme\Gemeinsame Dateien'
QTJAVA = 'C:\Programme\Java\jre6\lib\ext\QTJava.zip'
USERNAME = 'Karsten'
PROCESSOR_LEVEL = '6'
FP_NO_HOST_CHECK = 'NO'
SYSTEMDRIVE = 'C:'
JAVA_HOME = 'C:\Programme\Java\jdk1.5.0_16'
USERPROFILE = 'C:\Dokumente und Einstellungen\Karsten'
LANG = 'C'
PS1 = '\[\e]0;\w\a\]\n\[\e[32m\]\u@\h \[\e[33m\]\w\[\e[0m\]\n\$ '
LOGONSERVER = '\\NUMBERSIX'
PROCESSOR_ARCHITECTURE = 'x86'
!C: = 'C:\cygwin-1.7\bin'
SHLVL = '1'
PATHEXT = '.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH'
HOMEDRIVE = 'C:'
PROMPT = '$P$G'
COMSPEC = 'C:\WINDOWS\system32\cmd.exe'
TMP = '/cygdrive/c/DOKUME~1/Karsten/LOKALE~1/Temp'
SYSTEMROOT = 'C:\WINDOWS'
PRINTER = 'Brother MFC-8860DN Printer'
CVS_RSH = '/bin/ssh'
PROCESSOR_REVISION = '170a'
MVN_HOME = 'C:\Programme\Java\apache-maven-2.2.1'
CLASSPATH = '.;C:\Programme\Java\jdk1.5.0_16\lib\ext\QTJava.zip;C:\Programme\Java\junit4.5\junit-4.5.jar;C:\opt\iText\iText-2.1.6.jar;C:\Programme\Java\jre6\lib\ext\QTJava.zip'
INFOPATH = '/usr/local/info:/usr/share/info:/usr/info:'
PROGRAMFILES = 'C:\Programme'
JAVATOP = 'C:\Programme\Java'
NUMBER_OF_PROCESSORS = '2'
SESSIONNAME = 'Console'
COMPUTERNAME = 'NUMBERSIX'
_ = '/usr/bin/cygcheck'
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
HKEY_CURRENT_USER\Software\Cygwin
HKEY_CURRENT_USER\Software\Cygwin\Program Options
HKEY_CURRENT_USER\Software\Cygwin\setup
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\Start Menu2\Programs\Cygwin
(default) = (unsupported type)
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
HKEY_LOCAL_MACHINE\SOFTWARE\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygwin\Installations
(default) = '\??\C:\cygwin-1.7'
HKEY_LOCAL_MACHINE\SOFTWARE\Cygwin\Program Options
HKEY_LOCAL_MACHINE\SOFTWARE\Cygwin\setup
(default) = 'C:\cygwin-1.7'
obcaseinsensitive set to 1
Cygwin installations found in the registry:
System: Key: d268ca9952412bc8 Path: C:\cygwin-1.7
c: hd NTFS 236266Mb 13% CP CS UN PA FC
d: hd NTFS 2047Mb 67% CP CS UN PA FC RECOVERY
e: cd N/A N/A
C:\cygwin-1.7 / system binary,auto
C:\Dokumente und Einstellungen /home system binary
C:\cygwin-1.7\bin /usr/bin system binary,auto
C:\cygwin-1.7\lib /usr/lib system binary,auto
cygdrive prefix /cygdrive user binary,auto
Found: C:\cygwin-1.7\bin\awk.exe
Found: C:\cygwin-1.7\bin\awk.exe
-> C:\cygwin-1.7\bin\gawk.exe
Found: C:\cygwin-1.7\bin\bash.exe
Found: C:\cygwin-1.7\bin\bash.exe
Found: C:\cygwin-1.7\bin\cat.exe
Found: C:\cygwin-1.7\bin\cat.exe
Found: C:\cygwin-1.7\bin\cp.exe
Found: C:\cygwin-1.7\bin\cp.exe
Found: C:\cygwin-1.7\bin\cpp.exe
Found: C:\cygwin-1.7\bin\cpp.exe
-> C:\cygwin-1.7\etc\alternatives\cpp
-> C:\cygwin-1.7\bin\cpp-3.exe
Not Found: crontab
Found: C:\cygwin-1.7\bin\find.exe
Found: C:\cygwin-1.7\bin\find.exe
Found: C:\WINDOWS\system32\find.exe
Warning: C:\cygwin-1.7\bin\find.exe hides C:\WINDOWS\system32\find.exe
Found: C:\cygwin-1.7\bin\gcc.exe
Found: C:\cygwin-1.7\bin\gcc.exe
-> C:\cygwin-1.7\etc\alternatives\gcc
-> C:\cygwin-1.7\bin\gcc-3.exe
Found: C:\cygwin-1.7\bin\gdb.exe
Found: C:\cygwin-1.7\bin\gdb.exe
Found: C:\cygwin-1.7\bin\grep.exe
Found: C:\cygwin-1.7\bin\grep.exe
Found: C:\cygwin-1.7\bin\kill.exe
Found: C:\cygwin-1.7\bin\kill.exe
Found: C:\cygwin-1.7\bin\ld.exe
Found: C:\cygwin-1.7\bin\ld.exe
Found: C:\cygwin-1.7\bin\ls.exe
Found: C:\cygwin-1.7\bin\ls.exe
Found: C:\cygwin-1.7\bin\make.exe
Found: C:\cygwin-1.7\bin\make.exe
Found: C:\cygwin-1.7\bin\mv.exe
Found: C:\cygwin-1.7\bin\mv.exe
Not Found: patch
Found: C:\cygwin-1.7\bin\perl.exe
Found: C:\cygwin-1.7\bin\perl.exe
Found: C:\cygwin-1.7\bin\rm.exe
Found: C:\cygwin-1.7\bin\rm.exe
Found: C:\cygwin-1.7\bin\sed.exe
Found: C:\cygwin-1.7\bin\sed.exe
Found: C:\cygwin-1.7\bin\ssh.exe
Found: C:\cygwin-1.7\bin\ssh.exe
Found: C:\cygwin-1.7\bin\sh.exe
Found: C:\cygwin-1.7\bin\sh.exe
Found: C:\cygwin-1.7\bin\tar.exe
Found: C:\cygwin-1.7\bin\tar.exe
Found: C:\cygwin-1.7\bin\test.exe
Found: C:\cygwin-1.7\bin\test.exe
Not Found: vi
Found: C:\Programme\Vim\vim72\vim.exe
111k 2009/08/07 C:\cygwin-1.7\bin\cygapr-1-0.dll - os=4.0 img=1.0 sys=4.0
"cygapr-1-0.dll" v0.0 ts=2009/8/7 21:58
87k 2009/08/07 C:\cygwin-1.7\bin\cygaprutil-1-0.dll - os=4.0 img=1.0 sys=4.0
"cygaprutil-1-0.dll" v0.0 ts=2009/8/7 22:46
61k 2009/03/02 C:\cygwin-1.7\bin\cygbz2-1.dll - os=4.0 img=1.0 sys=4.0
"cygbz2-1.dll" v0.0 ts=2009/3/2 4:11
7k 2003/10/19 C:\cygwin-1.7\bin\cygcrypt-0.dll - os=4.0 img=1.0 sys=4.0
"cygcrypt-0.dll" v0.0 ts=2003/10/19 9:57
1147k 2009/11/05 C:\cygwin-1.7\bin\cygcrypto-0.9.8.dll - os=4.0 img=1.0 sys=4.0
"cygcrypto-0.9.8.dll" v0.0 ts=2009/11/5 18:36
703k 2007/12/17 C:\cygwin-1.7\bin\cygdb-4.2.dll - os=4.0 img=1.0 sys=4.0
"cygdb-4.2.dll" v0.0 ts=2007/12/17 12:58
943k 2007/12/17 C:\cygwin-1.7\bin\cygdb-4.5.dll - os=4.0 img=1.0 sys=4.0
"cygdb-4.5.dll" v0.0 ts=2007/12/17 14:12
1036k 2007/12/17 C:\cygwin-1.7\bin\cygdb_cxx-4.2.dll - os=4.0 img=1.0 sys=4.0
"cygdb_cxx-4.2.dll" v0.0 ts=2007/12/17 12:58
1296k 2007/12/17 C:\cygwin-1.7\bin\cygdb_cxx-4.5.dll - os=4.0 img=1.0 sys=4.0
"cygdb_cxx-4.5.dll" v0.0 ts=2007/12/17 14:12
118k 2008/05/09 C:\cygwin-1.7\bin\cygexpat-1.dll - os=4.0 img=1.0 sys=4.0
"cygexpat-1.dll" v0.0 ts=2008/5/9 6:03
28k 2009/03/22 C:\cygwin-1.7\bin\cygfam-0.dll - os=4.0 img=1.0 sys=4.0
"cygfam-0.dll" v0.0 ts=2009/3/22 19:56
40k 2009/03/01 C:\cygwin-1.7\bin\cygform-8.dll - os=4.0 img=1.0 sys=4.0
"cygform-8.dll" v0.0 ts=2009/3/1 7:32
43k 2009/11/20 C:\cygwin-1.7\bin\cygform-9.dll - os=4.0 img=1.0 sys=4.0
"cygform-9.dll" v0.0 ts=2009/11/20 20:14
44k 2009/09/29 C:\cygwin-1.7\bin\cyggcc_s-1.dll - os=4.0 img=1.0 sys=4.0
"cyggcc_s-1.dll" v0.0 ts=2009/9/14 17:42
19k 2009/02/26 C:\cygwin-1.7\bin\cyggdbm-4.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm-4.dll" v0.0 ts=2009/2/26 8:58
8k 2009/02/26 C:\cygwin-1.7\bin\cyggdbm_compat-4.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm_compat-4.dll" v0.0 ts=2009/2/26 8:58
516k 2009/10/27 C:\cygwin-1.7\bin\cyggio-2.0-0.dll - os=4.0 img=1.0 sys=4.0
"cyggio-2.0-0.dll" v0.0 ts=2009/10/25 21:39
685k 2009/10/27 C:\cygwin-1.7\bin\cygglib-2.0-0.dll - os=4.0 img=1.0 sys=4.0
"cygglib-2.0-0.dll" v0.0 ts=2009/10/25 21:36
13k 2009/10/27 C:\cygwin-1.7\bin\cyggmodule-2.0-0.dll - os=4.0 img=1.0 sys=4.0
"cyggmodule-2.0-0.dll" v0.0 ts=2009/10/25 21:36
315k 2009/06/06 C:\cygwin-1.7\bin\cyggmp-3.dll - os=4.0 img=1.0 sys=4.0
"cyggmp-3.dll" v0.0 ts=2009/6/6 13:23
227k 2009/10/27 C:\cygwin-1.7\bin\cyggobject-2.0-0.dll - os=4.0 img=1.0 sys=4.0
"cyggobject-2.0-0.dll" v0.0 ts=2009/10/25 21:37
15k 2009/10/27 C:\cygwin-1.7\bin\cyggthread-2.0-0.dll - os=4.0 img=1.0 sys=4.0
"cyggthread-2.0-0.dll" v0.0 ts=2009/10/25 21:37
25k 2009/07/06 C:\cygwin-1.7\bin\cyghistory7.dll - os=4.0 img=1.0 sys=4.0
"cyghistory7.dll" v0.0 ts=2009/7/5 16:45
274k 2009/12/03 C:\cygwin-1.7\bin\cygicons-0.dll - os=4.0 img=1.4 sys=4.0
"cygicons-0.dll" v0.0 ts=2009/12/3 9:07
981k 2009/05/30 C:\cygwin-1.7\bin\cygiconv-2.dll - os=4.0 img=1.0 sys=4.0
"cygiconv-2.dll" v0.0 ts=2009/5/30 21:05
37k 2003/08/10 C:\cygwin-1.7\bin\cygintl-2.dll - os=4.0 img=1.0 sys=4.0
"cygintl-2.dll" v0.0 ts=2003/8/10 23:50
31k 2005/11/20 C:\cygwin-1.7\bin\cygintl-3.dll - os=4.0 img=1.0 sys=4.0
"cygintl-3.dll" v0.0 ts=2005/11/20 3:04
31k 2009/04/03 C:\cygwin-1.7\bin\cygintl-8.dll - os=4.0 img=1.0 sys=4.0
"cygintl-8.dll" v0.0 ts=2009/4/3 3:15
39k 2008/09/07 C:\cygwin-1.7\bin\cyglber-2-3-0.dll - os=4.0 img=1.0 sys=4.0
"cyglber-2-3-0.dll" v0.0 ts=2008/9/7 14:28
189k 2008/09/07 C:\cygwin-1.7\bin\cygldap-2-3-0.dll - os=4.0 img=1.0 sys=4.0
"cygldap-2-3-0.dll" v0.0 ts=2008/9/7 14:29
201k 2008/09/07 C:\cygwin-1.7\bin\cygldap_r-2-3-0.dll - os=4.0 img=1.0 sys=4.0
"cygldap_r-2-3-0.dll" v0.0 ts=2008/9/7 14:31
5k 2009/12/04 C:\cygwin-1.7\bin\cyglsa.dll - os=4.0 img=1.0 sys=4.0
"cyglsa.dll" v0.0 ts=2009/12/4 17:09
9k 2009/12/04 C:\cygwin-1.7\bin\cyglsa64.dll - os=4.0 img=0.0 sys=5.2
123k 2009/08/30 C:\cygwin-1.7\bin\cyglzma-1.dll - os=4.0 img=1.0 sys=4.0
"cyglzma-1.dll" v0.0 ts=2009/8/31 0:35
21k 2009/03/01 C:\cygwin-1.7\bin\cygmenu-8.dll - os=4.0 img=1.0 sys=4.0
"cygmenu-8.dll" v0.0 ts=2009/3/1 7:31
25k 2009/11/20 C:\cygwin-1.7\bin\cygmenu-9.dll - os=4.0 img=1.0 sys=4.0
"cygmenu-9.dll" v0.0 ts=2009/11/20 20:13
24k 2008/10/30 C:\cygwin-1.7\bin\cygminires.dll - os=4.0 img=1.2 sys=4.0
"cygminires.dll" v0.0 ts=2008/10/31 0:53
211k 2009/06/06 C:\cygwin-1.7\bin\cygmp-3.dll - os=4.0 img=1.0 sys=4.0
"cygmp-3.dll" v0.0 ts=2009/6/6 13:23
66k 2009/03/01 C:\cygwin-1.7\bin\cygncurses++-8.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++-8.dll" v0.0 ts=2009/3/1 7:39
63k 2009/11/20 C:\cygwin-1.7\bin\cygncurses++-9.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++-9.dll" v0.0 ts=2009/11/20 20:25
237k 2009/03/01 C:\cygwin-1.7\bin\cygncurses-8.dll - os=4.0 img=1.0 sys=4.0
"cygncurses-8.dll" v0.0 ts=2009/3/1 7:28
198k 2009/11/20 C:\cygwin-1.7\bin\cygncurses-9.dll - os=4.0 img=1.0 sys=4.0
"cygncurses-9.dll" v0.0 ts=2009/11/20 20:10
115k 2009/09/30 C:\cygwin-1.7\bin\cygneon-27.dll - os=4.0 img=1.0 sys=4.0
"cygneon-27.dll" v0.0 ts=2009/9/30 15:33
11k 2009/03/01 C:\cygwin-1.7\bin\cygpanel-8.dll - os=4.0 img=1.0 sys=4.0
"cygpanel-8.dll" v0.0 ts=2009/3/1 7:30
13k 2009/11/20 C:\cygwin-1.7\bin\cygpanel-9.dll - os=4.0 img=1.0 sys=4.0
"cygpanel-9.dll" v0.0 ts=2009/11/20 20:12
217k 2009/11/10 C:\cygwin-1.7\bin\cygpcre-0.dll - os=4.0 img=1.0 sys=4.0
"cygpcre-0.dll" v0.0 ts=2009/10/25 10:42
8k 2009/11/10 C:\cygwin-1.7\bin\cygpcreposix-0.dll - os=4.0 img=1.0 sys=4.0
"cygpcreposix-0.dll" v0.0 ts=2009/10/25 10:42
1628k 2009/11/25 C:\cygwin-1.7\bin\cygperl5_10.dll - os=4.0 img=1.0 sys=4.0
"cygperl5_10.dll" v0.0 ts=2009/11/25 19:01
22k 2002/06/09 C:\cygwin-1.7\bin\cygpopt-0.dll - os=4.0 img=1.0 sys=4.0
"cygpopt-0.dll" v0.0 ts=2002/6/9 7:45
103k 2009/01/07 C:\cygwin-1.7\bin\cygpq.dll - os=4.0 img=1.0 sys=4.0
"cygpq.dll" v0.0 ts=2009/1/7 17:46
162k 2009/07/06 C:\cygwin-1.7\bin\cygreadline7.dll - os=4.0 img=1.0 sys=4.0
"cygreadline7.dll" v0.0 ts=2009/7/5 16:45
78k 2004/10/13 C:\cygwin-1.7\bin\cygsasl2-2.dll - os=4.0 img=1.0 sys=4.0
"cygsasl2-2.dll" v0.0 ts=2004/10/14 0:50
43k 2009/02/06 C:\cygwin-1.7\bin\cygserf-0-0.dll - os=4.0 img=1.0 sys=4.0
"cygserf-0-0.dll" v0.0 ts=2009/2/6 18:04
7k 2009/07/22 C:\cygwin-1.7\bin\cygsigsegv-0.dll - os=4.0 img=1.0 sys=4.0
"cygsigsegv-0.dll" v0.0 ts=2009/7/22 10:57
355k 2008/09/09 C:\cygwin-1.7\bin\cygsqlite3-0.dll - os=4.0 img=1.0 sys=4.0
"cygsqlite3-0.dll" v0.0 ts=2008/9/9 20:20
252k 2009/11/05 C:\cygwin-1.7\bin\cygssl-0.9.8.dll - os=4.0 img=1.0 sys=4.0
"cygssl-0.9.8.dll" v0.0 ts=2009/11/5 18:36
8k 2009/09/29 C:\cygwin-1.7\bin\cygssp-0.dll - os=4.0 img=1.0 sys=4.0
"cygssp-0.dll" v0.0 ts=2009/9/14 17:49
771k 2009/09/29 C:\cygwin-1.7\bin\cygstdc++-6.dll - os=4.0 img=1.0 sys=4.0
"cygstdc++-6.dll" v0.0 ts=2009/9/14 18:19
234k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_client-1-0.dll - os=4.0 img=1.0 sys=4.0
"cygsvn_client-1-0.dll" v0.0 ts=2009/10/23 17:46
36k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_delta-1-0.dll - os=4.0 img=1.0 sys=4.0
"cygsvn_delta-1-0.dll" v0.0 ts=2009/10/23 17:43
39k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_diff-1-0.dll - os=4.0 img=1.0 sys=4.0
"cygsvn_diff-1-0.dll" v0.0 ts=2009/10/23 17:43
18k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_fs-1-0.dll - os=4.0 img=1.0 sys=4.0
"cygsvn_fs-1-0.dll" v0.0 ts=2009/10/23 17:44
144k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_fs_base-1-0.dll - os=4.0 img=1.0 sys=4.0
"cygsvn_fs_base-1-0.dll" v0.0 ts=2009/10/23 17:43
123k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_fs_fs-1-0.dll - os=4.0 img=1.0 sys=4.0
"cygsvn_fs_fs-1-0.dll" v0.0 ts=2009/10/23 17:43
7k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_fs_util-1-0.dll - os=4.0 img=1.0 sys=4.0
"cygsvn_fs_util-1-0.dll" v0.0 ts=2009/10/23 17:43
30k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_ra-1-0.dll - os=4.0 img=1.0 sys=4.0
"cygsvn_ra-1-0.dll" v0.0 ts=2009/10/23 17:46
23k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_ra_local-1-0.dll - os=4.0 img=1.0 sys=4.0
"cygsvn_ra_local-1-0.dll" v0.0 ts=2009/10/23 17:44
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Cygwin DLL version info:
DLL version: 1.7.0
DLL epoch: 19
DLL old termios: 5
DLL malloc env: 28
Cygwin conv: 181
API major: 0
API minor: 218
Shared data: 5
DLL identifier: cygwin1
Mount registry: 3
Cygwin registry name: Cygwin
Program options name: Program Options
Installations name: Installations
Cygdrive default prefix:
Build date: Fri Dec 4 17:08:35 CET 2009
Shared id: cygwin1S5
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7k 2003/10/19 C:\cygwin-1.7\bin\cygcrypt-0.dll - os=4.0 img=1.0 sys=4.0
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1147k 2009/11/05 C:\cygwin-1.7\bin\cygcrypto-0.9.8.dll - os=4.0 img=1.0 sys=4.0
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703k 2007/12/17 C:\cygwin-1.7\bin\cygdb-4.2.dll - os=4.0 img=1.0 sys=4.0
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1036k 2007/12/17 C:\cygwin-1.7\bin\cygdb_cxx-4.2.dll - os=4.0 img=1.0 sys=4.0
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1296k 2007/12/17 C:\cygwin-1.7\bin\cygdb_cxx-4.5.dll - os=4.0 img=1.0 sys=4.0
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118k 2008/05/09 C:\cygwin-1.7\bin\cygexpat-1.dll - os=4.0 img=1.0 sys=4.0
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516k 2009/10/27 C:\cygwin-1.7\bin\cyggio-2.0-0.dll - os=4.0 img=1.0 sys=4.0
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315k 2009/06/06 C:\cygwin-1.7\bin\cyggmp-3.dll - os=4.0 img=1.0 sys=4.0
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274k 2009/12/03 C:\cygwin-1.7\bin\cygicons-0.dll - os=4.0 img=1.4 sys=4.0
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24k 2008/10/30 C:\cygwin-1.7\bin\cygminires.dll - os=4.0 img=1.2 sys=4.0
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237k 2009/03/01 C:\cygwin-1.7\bin\cygncurses-8.dll - os=4.0 img=1.0 sys=4.0
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198k 2009/11/20 C:\cygwin-1.7\bin\cygncurses-9.dll - os=4.0 img=1.0 sys=4.0
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115k 2009/09/30 C:\cygwin-1.7\bin\cygneon-27.dll - os=4.0 img=1.0 sys=4.0
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11k 2009/03/01 C:\cygwin-1.7\bin\cygpanel-8.dll - os=4.0 img=1.0 sys=4.0
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217k 2009/11/10 C:\cygwin-1.7\bin\cygpcre-0.dll - os=4.0 img=1.0 sys=4.0
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8k 2009/11/10 C:\cygwin-1.7\bin\cygpcreposix-0.dll - os=4.0 img=1.0 sys=4.0
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1628k 2009/11/25 C:\cygwin-1.7\bin\cygperl5_10.dll - os=4.0 img=1.0 sys=4.0
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22k 2002/06/09 C:\cygwin-1.7\bin\cygpopt-0.dll - os=4.0 img=1.0 sys=4.0
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103k 2009/01/07 C:\cygwin-1.7\bin\cygpq.dll - os=4.0 img=1.0 sys=4.0
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162k 2009/07/06 C:\cygwin-1.7\bin\cygreadline7.dll - os=4.0 img=1.0 sys=4.0
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78k 2004/10/13 C:\cygwin-1.7\bin\cygsasl2-2.dll - os=4.0 img=1.0 sys=4.0
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43k 2009/02/06 C:\cygwin-1.7\bin\cygserf-0-0.dll - os=4.0 img=1.0 sys=4.0
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7k 2009/07/22 C:\cygwin-1.7\bin\cygsigsegv-0.dll - os=4.0 img=1.0 sys=4.0
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355k 2008/09/09 C:\cygwin-1.7\bin\cygsqlite3-0.dll - os=4.0 img=1.0 sys=4.0
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252k 2009/11/05 C:\cygwin-1.7\bin\cygssl-0.9.8.dll - os=4.0 img=1.0 sys=4.0
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8k 2009/09/29 C:\cygwin-1.7\bin\cygssp-0.dll - os=4.0 img=1.0 sys=4.0
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771k 2009/09/29 C:\cygwin-1.7\bin\cygstdc++-6.dll - os=4.0 img=1.0 sys=4.0
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234k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_client-1-0.dll - os=4.0 img=1.0 sys=4.0
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36k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_delta-1-0.dll - os=4.0 img=1.0 sys=4.0
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18k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_fs-1-0.dll - os=4.0 img=1.0 sys=4.0
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144k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_fs_base-1-0.dll - os=4.0 img=1.0 sys=4.0
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123k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_fs_fs-1-0.dll - os=4.0 img=1.0 sys=4.0
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7k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_fs_util-1-0.dll - os=4.0 img=1.0 sys=4.0
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30k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_ra-1-0.dll - os=4.0 img=1.0 sys=4.0
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23k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_ra_local-1-0.dll - os=4.0 img=1.0 sys=4.0
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113k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_ra_neon-1-0.dll - os=4.0 img=1.0 sys=4.0
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114k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_ra_serf-1-0.dll - os=4.0 img=1.0 sys=4.0
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70k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_ra_svn-1-0.dll - os=4.0 img=1.0 sys=4.0
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138k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_repos-1-0.dll - os=4.0 img=1.0 sys=4.0
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246k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_subr-1-0.dll - os=4.0 img=1.0 sys=4.0
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240k 2009/10/26 C:\cygwin-1.7\bin\cygsvn_wc-1-0.dll - os=4.0 img=1.0 sys=4.0
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48k 2009/11/20 C:\cygwin-1.7\bin\cygtic-9.dll - os=4.0 img=1.0 sys=4.0
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24k 2009/03/29 C:\cygwin-1.7\bin\cygwrap-0.dll - os=4.0 img=1.0 sys=4.0
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64k 2009/03/02 C:\cygwin-1.7\bin\cygz.dll - os=4.0 img=1.0 sys=4.0
"cygz.dll" v0.0 ts=2009/3/2 2:33
2420k 2009/12/04 C:\cygwin-1.7\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
"cygwin1.dll" v0.0 ts=2009/12/4 17:08
Cygwin DLL version info:
DLL version: 1.7.0
DLL epoch: 19
DLL old termios: 5
DLL malloc env: 28
Cygwin conv: 181
API major: 0
API minor: 218
Shared data: 5
DLL identifier: cygwin1
Mount registry: 3
Cygwin registry name: Cygwin
Program options name: Program Options
Installations name: Installations
Cygdrive default prefix:
Build date: Fri Dec 4 17:08:35 CET 2009
Shared id: cygwin1S5
No Cygwin services found.
Cygwin Package Information
Last downloaded files to:
Last downloaded files from:
Package Version
_update-info-dir 00834-1
alternatives 1.3.30c-10
autoconf 7-10
autoconf2.1 2.13-10
autoconf2.5 2.64-10
automake 4-10
automake1.10 1.10.2-10
automake1.11 1.11-10
automake1.4 1.4p6-10
automake1.5 1.5-10
automake1.6 1.6.3-11
automake1.7 1.7.9-10
automake1.8 1.8.5-10
automake1.9 1.9.6-10
base-cygwin 2.0-1
base-files 3.9-2
base-passwd 3.1-1
bash 3.2.49-23
binutils 2.19.51-1
bzip2 1.0.5-10
coreutils 7.0-2
crypt 1.1-1
csih 0.9.1-1
ctags 5.7-1
cygrunsrv 1.34-1
cygutils 1.4.1-2
cygwin 1.7.0-68
cygwin-doc 1.5-1
dash 0.5.5.1-2
diffutils 2.8.7-1
editrights 1.01-2
expat 2.0.1-1
findutils 4.5.4-1
gamin 0.1.10-10
gawk 3.1.7-1
gcc-core 3.4.4-999
gcc-g++ 3.4.4-999
gcc-mingw-core 20050522-1
gcc-mingw-g++ 20050522-1
gdb 6.8-2
gettext 0.17-11
grep 2.5.4-2
groff 1.19.2-2
gzip 1.3.12-2
ipc-utils 1.0-1
irssi 0.8.14-1
less 429-1
libapr1 1.3.8-2
libaprutil1 1.3.9-2
libbz2_1 1.0.5-10
libdb4.2 4.2.52.5-2
libdb4.5 4.5.20.2-2
libexpat1 2.0.1-1
libexpat1-devel 2.0.1-1
libfam0 0.1.10-10
libgcc1 4.3.4-1
libgdbm4 1.8.3-20
libglib2.0_0 2.22.2-1
libgmp3 4.3.1-3
libiconv2 1.13-10
libintl2 0.12.1-3
libintl3 0.14.5-1
libintl8 0.17-11
liblzma1 4.999.9beta-10
libncurses-devel 5.7-16
libncurses8 5.5-10
libncurses9 5.7-16
libneon27 0.29.0-1
libopenldap2_3_0 2.3.43-1
libpcre0 8.00-1
libpopt0 1.6.4-4
libpq5 8.2.11-1
libreadline7 6.0.3-2
libsasl2 2.1.19-3
libserf0_0 0.3.0-2
libsigsegv0 2.6-1
libsqlite3_0 3.6.2-1
libssp0 4.3.4-1
libstdc++6 4.3.4-1
libwrap0 7.6-20
login 1.10-10
m4 1.4.13-2
make 3.81-2
man 1.6e-1
mingw-runtime 3.17-1
minires 1.02-1
openssh 5.3p1-1
openssl 0.9.8l-2
openssl-devel 0.9.8l-2
perl 5.10.1-1
readline 6.0.3-2
rebase 3.0.1-1
run 1.1.12-11
sed 4.1.5-2
subversion 1.6.6-2
tar 1.22-1
tcltk 20080420-1
terminfo 5.7_20091114-13
terminfo0 5.5_20061104-11
texinfo 4.13-3
tzcode 2009k-1
w32api 3.14-1
which 2.20-2
xz 4.999.9beta-10
zlib 1.2.3-10
zlib-devel 1.2.3-10
zlib0 1.2.3-10
Use -h to see help about each section
--------------060106050607060003040607
Content-Type: text/plain;
name="sigthread.c"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
filename="sigthread.c"
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <pthread.h>
#include <errno.h>
void handler(int sig)
{
printf("got wakeup call (signal %d)\n", sig);
}
void *thread(void *args)
{
/* make sure SIGALARM is not blocked */
sigset_t mask;
sigemptyset(&mask);
pthread_sigmask(SIG_SETMASK, &mask, NULL);
/* schedule SIGALRM to cut sleep short */
printf("thread going to sleep\n");
alarm(1);
sleep(5);
printf("thread done\n");
return NULL;
}
int main()
{
/* register the alarm signal handler */
struct sigaction sighandler;
sighandler.sa_flags = 0;
sighandler.sa_handler = handler;
sigfillset(&sighandler.sa_mask);
sigaction(SIGALRM, &sighandler, NULL);
/* create a thread */
pthread_t tid;
pthread_create(&tid, NULL, thread, NULL);
/* now block all signals for main thread */
sigset_t mask;
sigfillset(&mask);
sigdelset(&mask, SIGINT); /* except SIGINT for Ctrl-C bailout */
/* sigdelset(&mask, SIGALRM); * this unblocked gets handler called */
pthread_sigmask(SIG_SETMASK, &mask, NULL);
/* now wait for SIGHUP */
printf("main waiting for SIGHUP as %d\n", getpid());
int rc, sig;
sigset_t expected;
sigemptyset(&expected);
sigaddset(&expected, SIGHUP);
rc = sigwait(&expected, &sig);
printf("sigwait rc %d got signal %d: %d\n", rc, sig, errno);
/* gets errno=EINTR if SIGALRM is unblocked above */
/* and wait for the thread */
pthread_join(tid, NULL);
/* see what signals are still pending */
/* this segfaults, unless SIGALRM in unblocked above
sigset_t pending;
sigpending(&pending);
printf("pending signals: %x\n", pending);
*/
printf("main done\n");
return 0;
}
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