* alarm();pause();alarm();pause(); doesn't pause in pthread
@ 2002-03-19 22:55 Rob Gibson
2002-03-20 8:47 ` Christopher Faylor
0 siblings, 1 reply; 6+ messages in thread
From: Rob Gibson @ 2002-03-19 22:55 UTC (permalink / raw)
To: cygwin
[-- Attachment #1: Type: text/plain, Size: 1506 bytes --]
DLL version 1.3.10, running on Windows ME. I checked the message boards,
but did not see this.
Call this code X: {
alarm(2);
pause();
cout << "A";
alarm(4);
pause();
cout << "B";
alarm(4);
pause();
cout << "C";
alarm(4);
pause();
cout << "D";
}
I have two threads. In the first, my original startup thread, I register a
sig handler for SIGALRM. At this point, if I block the SIGALRM signal,
then run X, nothing happens. Ok. (If I unblock SIGALRM, I get four calls
to my sig handler, spaced the appropriate number of seconds apart. Ok.)
Now I start a second thread using pthread_create(). In the second thread's
function, if I immediately run code X, nothing happens, because my second
thread has inherited the blocked nature of SIGALRM. Ok.
Now, in my second thread, if I unblock SIGALRM using pthread_sigmask(),
which I believe only affects the second thread, I get a strange result. (I
also install a signal handler for this thread, fwiw.) If I run code X,
only the first pause() call actually waits for the alarm. The remaining
three pauses return immediately, no delay. (Or, possibly the remaining
alarms() immediately signal.)
I am somewhat new to UNIX, and am also somewhat new to Cygwin, so I
apologize if this is just due to some lack of knowledge on my part.
Thanks much,
Rob
P.S., the cygcheck.out file should be attached, containing all the relevant
system configuration data. I'm using the latest version of the Cygwin dll.
[-- Attachment #2: cygcheck.out --]
[-- Type: text/plain, Size: 8951 bytes --]
Cygwin Win95/NT Configuration Diagnostics
Current System Time: Tue Mar 19 00:09:55 2002
Windows ME Ver 4.90 Build 3000
Path: C:\rob\cygwin\usr\local\bin
C:\rob\cygwin\bin
.
C:\rob\cygwin\bin
C:\rob\cygwin\usr\local\bin
C:\rob\cygwin\bin
C:\rob\cygwin\bin
c:\ROB\KERBEROS
c:\WINDOWS
c:\WINDOWS\COMMAND
c:\rob\j2sdk1.4.0-rc\bin
c:\rob\emacs\ispell\bin
c:\rob\utils
.
SysDir: C:\WINDOWS\SYSTEM
WinDir: C:\WINDOWS
HOME = `C:\rob\cygwin\rgibson'
MAKE_MODE = `unix'
PWD = `/rgibson/bbdserver'
USER = `rgibson'
BLASTER = `A220 I5 D1 T4 P330'
CMDLINE = `bash --login -i'
COMSPEC = `C:\WINDOWS\COMMAND.COM'
MANPATH = `:/usr/ssl/man:/usr/ssl/man'
OLDPWD = `/rgibson'
PROMPT = `$p$g'
PS1 = `\[\033]0;\w\007
\033[32m\]\u@\h \[\033[33m\w\033[0m\]
$ '
SHLVL = `1'
TEMP = `c:\WINDOWS\TEMP'
TERM = `cygwin'
TMP = `c:\WINDOWS\TEMP'
WINBOOTDIR = `C:\WINDOWS'
WINDIR = `C:\WINDOWS'
_ = `/usr/bin/cygcheck'
HKEY_CURRENT_USER\Software\Cygnus Solutions
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
(default) = `/cygdrive'
cygdrive flags = 0x00000022
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/
(default) = `C:/rob/cygwin'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
(default) = `C:/rob/cygwin/bin'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
(default) = `C:/rob/cygwin/lib'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options
a: fd N/A N/A
c: hd FAT32 57256Mb 25% CP UN HP_PAVILION
m: cd CDFS 1Mb 100% UN 020203_0120
n: cd N/A N/A
C:/rob/cygwin / user binmode
C:/rob/cygwin/bin /usr/bin user binmode
C:/rob/cygwin/lib /usr/lib user binmode
. /cygdrive user binmode,noumount
Found: C:\rob\cygwin\bin\bash.exe
Found: C:\rob\cygwin\bin\cat.exe
Found: C:\rob\cygwin\bin\cpp.exe
Found: C:\rob\cygwin\bin\find.exe
Found: c:\WINDOWS\COMMAND\find.exe
Warning: C:\rob\cygwin\bin\find.exe hides c:\WINDOWS\COMMAND\find.exe
Found: C:\rob\cygwin\bin\gcc.exe
Found: C:\rob\cygwin\bin\gdb.exe
Found: C:\rob\cygwin\bin\ld.exe
Found: C:\rob\cygwin\bin\ls.exe
Not Found: make
Found: C:\rob\cygwin\bin\sh.exe
19k 2002/02/20 C:\rob\cygwin\bin\cyggdbm.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm.dll" v0.0 ts=2002/2/19 22:05
22k 2001/12/13 C:\rob\cygwin\bin\cygintl-1.dll - os=4.0 img=1.0 sys=4.0
"cygintl-1.dll" v0.0 ts=2001/12/13 4:28
45k 2001/04/25 C:\rob\cygwin\bin\cygform5.dll - os=4.0 img=1.0 sys=4.0
"cygform5.dll" v0.0 ts=2001/4/25 1:28
26k 2001/04/25 C:\rob\cygwin\bin\cygmenu5.dll - os=4.0 img=1.0 sys=4.0
"cygmenu5.dll" v0.0 ts=2001/4/25 1:27
156k 2001/04/25 C:\rob\cygwin\bin\cygncurses++5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++5.dll" v0.0 ts=2001/4/25 1:29
226k 2001/04/25 C:\rob\cygwin\bin\cygncurses5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses5.dll" v0.0 ts=2001/4/25 1:17
15k 2001/04/25 C:\rob\cygwin\bin\cygpanel5.dll - os=4.0 img=1.0 sys=4.0
"cygpanel5.dll" v0.0 ts=2001/4/25 1:27
35k 2002/01/09 C:\rob\cygwin\bin\cygform6.dll - os=4.0 img=1.0 sys=4.0
"cygform6.dll" v0.0 ts=2002/1/9 1:03
20k 2002/01/09 C:\rob\cygwin\bin\cygmenu6.dll - os=4.0 img=1.0 sys=4.0
"cygmenu6.dll" v0.0 ts=2002/1/9 1:03
175k 2002/01/09 C:\rob\cygwin\bin\cygncurses++6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++6.dll" v0.0 ts=2002/1/9 1:03
202k 2002/01/09 C:\rob\cygwin\bin\cygncurses6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses6.dll" v0.0 ts=2002/1/9 1:03
12k 2002/01/09 C:\rob\cygwin\bin\cygpanel6.dll - os=4.0 img=1.0 sys=4.0
"cygpanel6.dll" v0.0 ts=2002/1/9 1:03
17k 2001/06/28 C:\rob\cygwin\bin\cyghistory4.dll - os=4.0 img=1.0 sys=4.0
"cyghistory4.dll" v0.0 ts=2001/1/6 23:34
108k 2001/06/28 C:\rob\cygwin\bin\cygreadline4.dll - os=4.0 img=1.0 sys=4.0
"cygreadline4.dll" v0.0 ts=2001/1/6 23:34
20k 2002/01/13 C:\rob\cygwin\bin\cyghistory5.dll - os=4.0 img=1.0 sys=4.0
"cyghistory5.dll" v0.0 ts=2002/1/12 20:27
121k 2002/01/13 C:\rob\cygwin\bin\cygreadline5.dll - os=4.0 img=1.0 sys=4.0
"cygreadline5.dll" v0.0 ts=2002/1/12 20:27
40k 2001/11/21 C:\rob\cygwin\bin\cygpcre.dll - os=4.0 img=1.0 sys=4.0
"cygpcre.dll" v0.0 ts=2001/11/21 17:15
39k 2001/11/21 C:\rob\cygwin\bin\cygpcreposix.dll - os=4.0 img=1.0 sys=4.0
"cygpcreposix.dll" v0.0 ts=2001/11/21 17:15
50k 2002/03/12 C:\rob\cygwin\bin\cygz.dll - os=4.0 img=1.0 sys=4.0
"cygz.dll" v0.0 ts=2002/3/11 23:38
21k 2001/06/20 C:\rob\cygwin\bin\cygintl.dll - os=4.0 img=1.0 sys=4.0
"cygintl.dll" v0.0 ts=2001/6/20 13:09
621k 2002/01/16 C:\rob\cygwin\bin\cygcrypto.dll - os=4.0 img=1.0 sys=4.0
"cygcrypto.dll" v0.0 ts=2002/1/16 4:54
156k 2002/01/16 C:\rob\cygwin\bin\cygssl.dll - os=4.0 img=1.0 sys=4.0
"cygssl.dll" v0.0 ts=2002/1/16 4:54
81k 2001/10/20 C:\rob\cygwin\bin\cygitcl30.dll - os=4.0 img=1.0 sys=4.0
"cygitcl30.dll" v0.0 ts=2001/10/19 20:25
35k 2001/10/20 C:\rob\cygwin\bin\cygitk30.dll - os=4.0 img=1.0 sys=4.0
"cygitk30.dll" v0.0 ts=2001/10/19 20:25
390k 2001/10/20 C:\rob\cygwin\bin\cygtcl80.dll - os=4.0 img=1.0 sys=4.0
"cygtcl80.dll" v0.0 ts=2001/10/19 20:24
5k 2001/10/20 C:\rob\cygwin\bin\cygtclpip80.dll - os=4.0 img=1.0 sys=4.0
10k 2001/10/20 C:\rob\cygwin\bin\cygtclreg80.dll - os=4.0 img=1.0 sys=4.0
"cygtclreg80.dll" v0.0 ts=2001/10/19 20:24
623k 2001/10/20 C:\rob\cygwin\bin\cygtk80.dll - os=4.0 img=1.0 sys=4.0
"cygtk80.dll" v0.0 ts=2001/10/19 20:25
751k 2002/02/25 C:\rob\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
"cygwin1.dll" v0.0 ts=2002/2/25 11:14
Cygwin DLL version info:
DLL version: 1.3.10
DLL epoch: 19
DLL bad signal mask: 19005
DLL old termios: 5
DLL malloc env: 28
API major: 0
API minor: 51
Shared data: 3
DLL identifier: cygwin1
Mount registry: 2
Cygnus registry name: Cygnus Solutions
Cygwin registry name: Cygwin
Program options name: Program Options
Cygwin mount registry name: mounts v2
Cygdrive flags: cygdrive flags
Cygdrive prefix: cygdrive prefix
Cygdrive default prefix:
Build date: Mon Feb 25 11:14:34 EST 2002
Shared id: cygwin1S3
Cygwin Package Information
Last downloaded files to: c:\rob\cygwin\tmp
Last downloaded files from: ftp://uiarchive.uiuc.edu/mirrors/ftp/sources.redhat.com/pub/cygwin
Package Version
ash 20020131-1
bash 2.05a-3
binutils 20011002-1
cygwin 1.3.10-1
diff 0.0
fileutils 4.1-1
findutils 4.1
gawk 3.0.4-1
gcc 2.95.3-5
gdb 20010428-3
gdbm 1.8.0-4
gperf 0.0
grep 2.5g
groff 1.17.2-1
gzip 1.3.2-1
less 358-3
libintl 0.10.38-3
libintl1 0.10.40-1
libncurses5 5.2-1
libncurses6 5.2-8
libreadline4 4.1-2
libreadline5 4.2a-1
login 1.4-3
man 1.5g-2
ncurses 5.2-8
openssh 3.1p1-1
openssl 0.9.6c-3
pcre 3.7-1
readline 4.2a-1
sed 3.02-1
sh-utils 2.0-2
tar 1.13.19-1
tcsh 6.11.00-4
termcap 20010825-1
terminfo 5.2-1
textutils 2.0.21-1
vim 6.0.93-1
w32api 1.2-1
which 1.5-1
zlib 1.1.4-1
Use -h to see help about each section
[-- Attachment #3: Type: text/plain, Size: 214 bytes --]
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: alarm();pause();alarm();pause(); doesn't pause in pthread
2002-03-19 22:55 alarm();pause();alarm();pause(); doesn't pause in pthread Rob Gibson
@ 2002-03-20 8:47 ` Christopher Faylor
2002-03-21 2:46 ` Stephane Corbe
0 siblings, 1 reply; 6+ messages in thread
From: Christopher Faylor @ 2002-03-20 8:47 UTC (permalink / raw)
To: cygwin; +Cc: rgibson
On Wed, Mar 20, 2002 at 01:03:53AM -0500, Rob Gibson wrote:
>DLL version 1.3.10, running on Windows ME. I checked the message boards,
>but did not see this.
>
>Call this code X: {
> alarm(2);
> pause();
> cout << "A";
> alarm(4);
> pause();
> cout << "B";
> alarm(4);
> pause();
> cout << "C";
> alarm(4);
> pause();
> cout << "D";
>}
>
>
>I have two threads. In the first, my original startup thread, I register a
>sig handler for SIGALRM. At this point, if I block the SIGALRM signal,
>then run X, nothing happens. Ok. (If I unblock SIGALRM, I get four calls
>to my sig handler, spaced the appropriate number of seconds apart. Ok.)
>
>Now I start a second thread using pthread_create(). In the second thread's
>function, if I immediately run code X, nothing happens, because my second
>thread has inherited the blocked nature of SIGALRM. Ok.
signals do not work with anything but the main thread. Sorry.
cgf
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: alarm();pause();alarm();pause(); doesn't pause in pthread
2002-03-20 8:47 ` Christopher Faylor
@ 2002-03-21 2:46 ` Stephane Corbe
2002-03-21 9:32 ` Christopher Faylor
0 siblings, 1 reply; 6+ messages in thread
From: Stephane Corbe @ 2002-03-21 2:46 UTC (permalink / raw)
To: cygwin
cgf wrote :
> signals do not work with anything but the main thread. Sorry.
>
Is this a temporary behavior or will it work in the futur ?
What are the other limits of non-main threads ?
Has new processes created by fork the same limits ? others ?
Stephane
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: alarm();pause();alarm();pause(); doesn't pause in pthread
2002-03-21 2:46 ` Stephane Corbe
@ 2002-03-21 9:32 ` Christopher Faylor
0 siblings, 0 replies; 6+ messages in thread
From: Christopher Faylor @ 2002-03-21 9:32 UTC (permalink / raw)
To: cygwin
On Thu, Mar 21, 2002 at 11:40:09AM +0000, Stephane Corbe wrote:
>cgf wrote :
>
>> signals do not work with anything but the main thread. Sorry.
>>
>Is this a temporary behavior or will it work in the futur ?
I've always planned on implementing this in the future and have some
preliminary changes in my local system but it isn't likely that this
will be fixed anytime soon.
cgf
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^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: alarm();pause();alarm();pause(); doesn't pause in pthread
@ 2002-03-22 0:00 Robert Collins
0 siblings, 0 replies; 6+ messages in thread
From: Robert Collins @ 2002-03-22 0:00 UTC (permalink / raw)
To: cygwin
> -----Original Message-----
> From: Christopher Faylor [mailto:cgf@redhat.com]
> Sent: Friday, March 22, 2002 3:56 AM
> To: cygwin@cygwin.com
> Subject: Re: alarm();pause();alarm();pause(); doesn't pause in pthread
>
>
> On Thu, Mar 21, 2002 at 11:40:09AM +0000, Stephane Corbe wrote:
> >cgf wrote :
> >
> >> signals do not work with anything but the main thread. Sorry.
> >>
> >Is this a temporary behavior or will it work in the futur ?
>
> I've always planned on implementing this in the future and
> have some preliminary changes in my local system but it isn't
> likely that this will be fixed anytime soon.
Want to throw a patch kit myway - I've been mulling on this too.
Rob
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^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: alarm();pause();alarm();pause(); doesn't pause in pthread
@ 2002-03-21 3:55 Robert Collins
0 siblings, 0 replies; 6+ messages in thread
From: Robert Collins @ 2002-03-21 3:55 UTC (permalink / raw)
To: Stephane Corbe, cygwin
> -----Original Message-----
> From: Stephane Corbe [mailto:sc@axlog.fr]
> Sent: Thursday, March 21, 2002 10:40 PM
> To: cygwin@cygwin.com
> Subject: Re: alarm();pause();alarm();pause(); doesn't pause in pthread
>
>
> cgf wrote :
>
> > signals do not work with anything but the main thread. Sorry.
> >
> Is this a temporary behavior or will it work in the futur ?
>
> What are the other limits of non-main threads ?
That's really it.
> Has new processes created by fork the same limits ? others ?
Identical.
Rob
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^ permalink raw reply [flat|nested] 6+ messages in thread
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Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2002-03-19 22:55 alarm();pause();alarm();pause(); doesn't pause in pthread Rob Gibson
2002-03-20 8:47 ` Christopher Faylor
2002-03-21 2:46 ` Stephane Corbe
2002-03-21 9:32 ` Christopher Faylor
2002-03-21 3:55 Robert Collins
2002-03-22 0:00 Robert Collins
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