* 1.1.3: mmap() returns unusable memory segments: segm fault
@ 2001-11-05 12:08 Lothar Linhard
2001-11-05 13:01 ` Corinna Vinschen
0 siblings, 1 reply; 10+ messages in thread
From: Lothar Linhard @ 2001-11-05 12:08 UTC (permalink / raw)
To: cygwin
[-- Attachment #1: Type: text/plain, Size: 915 bytes --]
Hi,
I run Cygwin 133 on NT4.0SP6 (output of cygcheck -s
is attached). mmap() doesn't work even for a very
simple case. Try:
#include <stdio.h>
#include <sys/mman.h>
int main() {
char* core;
core = mmap(NULL,0x10000,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0);
if (core == MAP_FAILED) goto err;
printf("mmap %p\n", core);
*core = 'A'; /* ok */
core = mmap(NULL,0x20000,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0);
if (core == MAP_FAILED) goto err;
printf("mmap %p\n", core);
*core = 'A'; /* Segmentation fault */
return 0;
err:
perror("mmap");
return 1;
}
------------------------- end of test program -----------------
Same, if I use MA_SHARED. Any Help?
When I run this, I get:
mmap 0x1a230000
mmap 0x1a240000
0 [main] a 126 open_stackdumpfile: Dumping stack trace to a.exe.stackdump Segmentation fault (core dumped)
Lothar.
[-- Attachment #2: cygcheck.out --]
[-- Type: text/x-Algol68, Size: 8610 bytes --]
Cygnus Win95/NT Configuration Diagnostics
Current System Time: Mon Nov 5 20:57:45 2001
WinNT Ver 4.0 build 1381 Service Pack 6
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/usr/bin
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/cygdrive/c/tcltk83/bin
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Found: C:\cygwin\bin\cat.exe
Found: C:\cygwin\bin\cpp.exe
Found: C:\cygwin\bin\find.exe
Found: C:\cygwin\bin\gcc.exe
Found: C:\cygwin\bin\gdb.exe
Found: C:\cygwin\bin\ld.exe
Found: C:\cygwin\bin\ls.exe
Found: C:\cygwin\bin\make.exe
Found: C:\cygwin\bin\sh.exe
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Cygwin DLL version info:
dll major: 1003
dll minor: 3
dll epoch: 19
dll bad signal mask: 19005
dll old termios: 5
dll malloc env: 28
api major: 0
api minor: 46
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: Wed Sep 12 23:54:31 EDT 2001
shared id: cygwin1S3
Use -h to see help about each section
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: 1.1.3: mmap() returns unusable memory segments: segm fault
2001-11-05 12:08 1.1.3: mmap() returns unusable memory segments: segm fault Lothar Linhard
@ 2001-11-05 13:01 ` Corinna Vinschen
2001-11-05 13:31 ` Christopher Faylor
2001-11-06 2:16 ` Lothar Linhard
0 siblings, 2 replies; 10+ messages in thread
From: Corinna Vinschen @ 2001-11-05 13:01 UTC (permalink / raw)
To: cygwin
On Mon, Nov 05, 2001 at 09:08:01PM +0100, Lothar Linhard wrote:
> Hi,
>
> I run Cygwin 133 on NT4.0SP6 (output of cygcheck -s
> is attached). mmap() doesn't work even for a very
> simple case. Try:
mmap works in many cases, you've just hit a leak.
Unfortunately, this isn't fixed in 1.3.4 now but I've just
checked in the fix in the developers CVS tree.
Thanks for the report and especially for the testcase.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Developer mailto:cygwin@cygwin.com
Red Hat, Inc.
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: 1.1.3: mmap() returns unusable memory segments: segm fault
2001-11-05 13:01 ` Corinna Vinschen
@ 2001-11-05 13:31 ` Christopher Faylor
2001-11-06 2:16 ` Lothar Linhard
1 sibling, 0 replies; 10+ messages in thread
From: Christopher Faylor @ 2001-11-05 13:31 UTC (permalink / raw)
To: cygwin
On Mon, Nov 05, 2001 at 10:01:34PM +0100, Corinna Vinschen wrote:
>On Mon, Nov 05, 2001 at 09:08:01PM +0100, Lothar Linhard wrote:
>> Hi,
>>
>> I run Cygwin 133 on NT4.0SP6 (output of cygcheck -s
>> is attached). mmap() doesn't work even for a very
>> simple case. Try:
>
>mmap works in many cases, you've just hit a leak.
>Unfortunately, this isn't fixed in 1.3.4 now but I've just
>checked in the fix in the developers CVS tree.
I just refreshed 1.3.4 with only this change. So there is now a cygwin-1.3.4-2
on sources.redhat.com.
cgf
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: 1.1.3: mmap() returns unusable memory segments: segm fault
2001-11-05 13:01 ` Corinna Vinschen
2001-11-05 13:31 ` Christopher Faylor
@ 2001-11-06 2:16 ` Lothar Linhard
2001-11-06 2:46 ` Corinna Vinschen
1 sibling, 1 reply; 10+ messages in thread
From: Lothar Linhard @ 2001-11-06 2:16 UTC (permalink / raw)
To: Corinna Vinschen
Wow! What a quick respond. Thank you.
I'll checkout the CVS tree (anoncvs@anoncvs.cygnus.com)
and see if I can compile cygwin.dll and run more mmap
tests.
Is there a list of limitations of Cygwin's mmap?
Lothar.
On Mon, 5 Nov 2001, Corinna Vinschen wrote:
> Date: Mon, 5 Nov 2001 22:01:34 +0100
> From: Corinna Vinschen <cygwin@cygwin.com>
> To: cygwin@cygwin.com
> Subject: Re: 1.1.3: mmap() returns unusable memory segments: segm fault
>
> On Mon, Nov 05, 2001 at 09:08:01PM +0100, Lothar Linhard wrote:
> > Hi,
> >
> > I run Cygwin 133 on NT4.0SP6 (output of cygcheck -s
> > is attached). mmap() doesn't work even for a very
> > simple case. Try:
>
> mmap works in many cases, you've just hit a leak.
> Unfortunately, this isn't fixed in 1.3.4 now but I've just
> checked in the fix in the developers CVS tree.
>
> Thanks for the report and especially for the testcase.
>
> Corinna
>
> --
> Corinna Vinschen Please, send mails regarding Cygwin to
> Cygwin Developer mailto:cygwin@cygwin.com
> Red Hat, Inc.
>
> --
> Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
> Bug reporting: http://cygwin.com/bugs.html
> Documentation: http://cygwin.com/docs.html
> FAQ: http://cygwin.com/faq/
>
>
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: 1.1.3: mmap() returns unusable memory segments: segm fault
2001-11-06 2:16 ` Lothar Linhard
@ 2001-11-06 2:46 ` Corinna Vinschen
2001-11-06 4:20 ` Lothar Linhard
0 siblings, 1 reply; 10+ messages in thread
From: Corinna Vinschen @ 2001-11-06 2:46 UTC (permalink / raw)
To: cygwin
On Tue, Nov 06, 2001 at 11:16:07AM +0100, Lothar Linhard wrote:
>
> Wow! What a quick respond. Thank you.
> I'll checkout the CVS tree (anoncvs@anoncvs.cygnus.com)
> and see if I can compile cygwin.dll and run more mmap
> tests.
Chris has put the patch into 1.3.4-2 which should be on most mirrors
in the meantime.
However, there are already 5 mmap test applications in the testsuite
so you can see what is already tested. I will probably add your test
as the sixth.
> Is there a list of limitations of Cygwin's mmap?
No. There are limitations given due to OS restrictions. E.g. the
addresses for mmaps which are always < 0x80000000 on NT/2K/XP and
always >= 0x80000000 and < 0xc0000000 on 9x/ME which makes the usage
of MAP_FIXED somewhat complicated. Or the missing VirtualProtect()
on 9x/ME which doesn't allow to force an invalidation of pages after
munmap(). I would suggest to look on http://msdn.microsoft.com into
the description of MapViewOfFileEx() and CreateFileMapping(). Our
mmap() impementation tries to tweak the Win32 calls so that mmap()
behaves as POSIX conformant as possible but it's not easy to find
all border conditions.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Developer mailto:cygwin@cygwin.com
Red Hat, Inc.
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: 1.1.3: mmap() returns unusable memory segments: segm fault
2001-11-06 2:46 ` Corinna Vinschen
@ 2001-11-06 4:20 ` Lothar Linhard
2001-11-06 5:05 ` Corinna Vinschen
0 siblings, 1 reply; 10+ messages in thread
From: Lothar Linhard @ 2001-11-06 4:20 UTC (permalink / raw)
To: Corinna Vinschen
[-- Attachment #1: Type: text/plain, Size: 3505 bytes --]
Hi Corinna,
thanks, I've installed 1.3.4-2 and can verify that the problem
is fixed. I'm still enthusiastic about your response time.
However, here is another problem I have detected:
UNIX allows to do one unmap on memory space mapped by
several continous mmaps. Cygwin's munmap doesnt. I can
walk around this limitation, so this is (as far as I'm concerned)
a low priority request.
Here is my test case:
#include <stdio.h>
#include <sys/types.h>
#include <sys/mman.h>
int main() {
char* core1;
char* core2;
core1 = mmap(NULL,0x10000,PROT_READ|PROT_WRITE,MAP_SHARED|MAP_ANON,-1,0);
if (core1 == MAP_FAILED) goto mmap_err;
printf("mmap %p\n", core1);
core2 = mmap(NULL,0x20000,PROT_READ|PROT_WRITE,MAP_SHARED|MAP_ANON,-1,0);
if (core2 == MAP_FAILED) goto mmap_err;
printf("mmap %p\n", core2);
if (core1 + 0x10000 == core2) {
printf("merge %p...%p...%p\n", core1, core2, core1+0x30000);
/* consider core1 as continuous memory of 0x30000 bytes */
if (munmap(core1, 0x30000) == -1) goto munmap_err; /* FAIL */
} else {
if (munmap(core1, 0x10000) == -1) goto munmap_err; /* OK */
if (munmap(core2, 0x20000) == -1) goto munmap_err;
}
return 0;
mmap_err:
perror("mmap");
return 1;
munmap_err:
perror("munmap");
return 1;
}
---------------------- end of test case --------------------
On my NT 4.0 SP6 running cygwin 1.3.4-2 (see details attached),
I get:
ERDE$ gcc mtest2.c
ERDE$ ./a.exe
mmap 0x1a230000
mmap 0x1a240000
merge 0x1a230000...0x1a240000...0x1a260000
munmap: Invalid argument
Greetings,
Lothar.
On Tue, 6 Nov 2001, Corinna Vinschen wrote:
> Date: Tue, 6 Nov 2001 11:46:42 +0100
> From: Corinna Vinschen <cygwin@cygwin.com>
> To: cygwin <cygwin@cygwin.com>
> Subject: Re: 1.1.3: mmap() returns unusable memory segments: segm fault
>
> On Tue, Nov 06, 2001 at 11:16:07AM +0100, Lothar Linhard wrote:
> >
> > Wow! What a quick respond. Thank you.
> > I'll checkout the CVS tree (anoncvs@anoncvs.cygnus.com)
> > and see if I can compile cygwin.dll and run more mmap
> > tests.
>
> Chris has put the patch into 1.3.4-2 which should be on most mirrors
> in the meantime.
>
> However, there are already 5 mmap test applications in the testsuite
> so you can see what is already tested. I will probably add your test
> as the sixth.
>
> > Is there a list of limitations of Cygwin's mmap?
>
> No. There are limitations given due to OS restrictions. E.g. the
> addresses for mmaps which are always < 0x80000000 on NT/2K/XP and
> always >= 0x80000000 and < 0xc0000000 on 9x/ME which makes the usage
> of MAP_FIXED somewhat complicated. Or the missing VirtualProtect()
> on 9x/ME which doesn't allow to force an invalidation of pages after
> munmap(). I would suggest to look on http://msdn.microsoft.com into
> the description of MapViewOfFileEx() and CreateFileMapping(). Our
> mmap() impementation tries to tweak the Win32 calls so that mmap()
> behaves as POSIX conformant as possible but it's not easy to find
> all border conditions.
>
> Corinna
>
> --
> Corinna Vinschen Please, send mails regarding Cygwin to
> Cygwin Developer mailto:cygwin@cygwin.com
> Red Hat, Inc.
>
> --
> Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
> Bug reporting: http://cygwin.com/bugs.html
> Documentation: http://cygwin.com/docs.html
> FAQ: http://cygwin.com/faq/
>
>
[-- Attachment #2: cycheck.out --]
[-- Type: text/x-Algol68, Size: 8914 bytes --]
Cygnus Win95/NT Configuration Diagnostics
Current System Time: Tue Nov 6 13:18:43 2001
WinNT Ver 4.0 build 1381 Service Pack 6
Path: .
/h/bin
/usr/local/bin
/usr/bin
/bin
/c/WINNT/system32
/c/WINNT
/c/Program Files/Bitkeeper
/c/tcltk83/bin
/c/tools
/c/tcltk82/bin
/c/tcltk81/bin
/c/tcltk80/bin
/c/PROGRA~1/BITKEE~1
/c/MSDEV/bin
/c/Program Files/DevStudio/SharedIDE/bin
SysDir: C:\WINNT\System32
WinDir: C:\WINNT
PWD = `/h/gv2/zdb'
MAKEFLAGS = `--no-print-directory'
USER = `lld'
MAKE_MODE = `unix'
HOME = `/h'
NUMBER_OF_PROCESSORS = `1'
PROMPT = `$P$G'
LOGONSERVER = `\\ERDE'
OS2LIBPATH = `C:\WINNT\system32\os2\dll;'
COMSPEC = `C:\WINNT\system32\cmd.exe'
!C: = `C:\cygwin\bin'
SYSTEMDRIVE = `C:'
HOSTNAME = `ERDE'
INCLUDE = `c:\msdev\include;c:\msdev\atl\include;c:\msdev\mfc\include;%include%'
PROCESSOR_REVISION = `0803'
MSDEVDIR = `C:\Program Files\DevStudio\SharedIDE'
PATHEXT = `.COM;.EXE;.BAT;.CMD'
COMPUTERNAME = `ERDE'
WINDIR = `C:\WINNT'
USERPROFILE = `C:\WINNT\Profiles\lld'
PS1 = `\h\$ '
HOMESHARE = `\\star\lld'
UID = `52'
MACHTYPE = `i686-pc-cygwin'
PROCESSOR_IDENTIFIER = `x86 Family 6 Model 8 Stepping 3, GenuineIntel'
LM_LICENSE_FILE = `1700@Jupiter'
OS = `Windows_NT'
OLDPWD = `/h'
PROCESSOR_ARCHITECTURE = `x86'
TEMP = `/c/TEMP'
SIMUCAD_LICENSE_FILE = `C:\Program Files\Simucad\Silos2001Demo\silos.lic'
EDITOR = `vi'
PROCESSOR_LEVEL = `6'
SYSTEMROOT = `C:\WINNT'
HOMEDRIVE = `H:'
LIB = `c:\msdev\lib;c:\msdev\mfc\lib;%lib%'
SHLVL = `1'
SILOS_HOME = `C:\Program Files\Simucad\Silos2001Demo'
HOMEPATH = `\'
USERDOMAIN = `ERDE'
USERNAME = `lld'
SHELL = `/bin/bash'
HOSTTYPE = `i686'
OSTYPE = `cygwin'
TERM = `cygwin'
CFLAGS = `-g'
PURIFYOPTIONS = `-free-queue-length=1000 -chain-length=12'
ceBoxLicence = `BK99B2J7DI8IF7 2FIEL1655GG2AL 2J2IG9CHF1J88G L941NNILJFFELB'
LC_COLLATE = `C'
_ = `/usr/bin/cygcheck'
TZ = `WEST-1WEDT-2,M3.5.0/2,M10.5.0/3'
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\/c
(default) = `C:'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/ce
(default) = `\\star\ce'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/d
(default) = `D:'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/extra
(default) = `\\star\extra'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/h
(default) = `H:'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/home
(default) = `C:\home'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/obj
(default) = `D:\obj'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/s
(default) = `S:'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/tmp
(default) = `C:\tmp'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/x
(default) = `X:'
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\mounts v2\/
(default) = `C:\cygwin'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
(default) = `C:/cygwin/bin'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
(default) = `C:/cygwin/lib'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options
a: fd N/A N/A
c: hd NTFS 4008Mb 40% CP CS UN PA FC System
d: hd NTFS 15610Mb 11% CP CS UN PA FC
e: cd N/A N/A
h: net NTFS 5321Mb 88% CP CS PA lld
s: net NTFS 3124Mb 61% CP CS PA ce
x: net NTFS 33926Mb 48% CP CS PA extra
C:\cygwin\bin /usr/bin system binmode
C:\cygwin\lib /usr/lib system binmode
\\star\extra /extra user binmode
C:\cygwin / system binmode
\\star\ce /ce user binmode
C:\home /home user binmode
C:\tmp /tmp user binmode
D:\obj /obj user binmode
C: /c user binmode
D: /d user binmode
H: /h user binmode
S: /s user binmode
X: /x user binmode
Found: C:\cygwin\bin\bash.exe
Found: C:\cygwin\bin\cat.exe
Found: C:\cygwin\bin\cpp.exe
Found: C:\cygwin\bin\find.exe
Found: C:\cygwin\bin\gcc.exe
Found: C:\cygwin\bin\gdb.exe
Found: C:\cygwin\bin\ld.exe
Found: C:\cygwin\bin\ls.exe
Found: C:\cygwin\bin\make.exe
Found: C:\cygwin\bin\sh.exe
56k 2000/12/03 C:\cygwin\bin\cygbz21.0.dll - os=4.0 img=1.0 sys=4.0
"cygbz21.0.dll" v0.0 ts=2000/11/21 0:53
34k 2001/09/30 C:\cygwin\bin\cygform6.dll - os=4.0 img=1.0 sys=4.0
"cygform6.dll" v0.0 ts=2001/9/30 4:43
18k 2000/10/23 C:\cygwin\bin\cyggdbm.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm.dll" v0.0 ts=2000/10/23 4:26
17k 2001/06/28 C:\cygwin\bin\cyghistory4.dll - os=4.0 img=1.0 sys=4.0
"cyghistory4.dll" v0.0 ts=2001/1/7 5:34
21k 2001/06/28 C:\cygwin\bin\cyghistory5.dll - os=4.0 img=1.0 sys=4.0
"cyghistory5.dll" v0.0 ts=2001/6/28 4:27
21k 2001/06/20 C:\cygwin\bin\cygintl.dll - os=4.0 img=1.0 sys=4.0
"cygintl.dll" v0.0 ts=2001/6/20 19:09
81k 2001/10/20 C:\cygwin\bin\cygitcl30.dll - os=4.0 img=1.0 sys=4.0
"cygitcl30.dll" v0.0 ts=2001/10/20 2:25
35k 2001/10/20 C:\cygwin\bin\cygitk30.dll - os=4.0 img=1.0 sys=4.0
"cygitk30.dll" v0.0 ts=2001/10/20 2:25
45k 2001/07/04 C:\cygwin\bin\cygjbig1.dll - os=4.0 img=1.0 sys=4.0
"cygjbig1.dll" v0.0 ts=2001/7/4 5:25
119k 2001/06/06 C:\cygwin\bin\cygjpeg6b.dll - os=4.0 img=1.0 sys=4.0
"cygjpeg6b.dll" v0.0 ts=2001/6/6 6:27
19k 2001/09/30 C:\cygwin\bin\cygmenu6.dll - os=4.0 img=1.0 sys=4.0
"cygmenu6.dll" v0.0 ts=2001/9/30 4:43
175k 2001/09/30 C:\cygwin\bin\cygncurses++6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++6.dll" v0.0 ts=2001/9/30 4:45
201k 2001/09/30 C:\cygwin\bin\cygncurses6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses6.dll" v0.0 ts=2001/9/30 4:42
12k 2001/09/30 C:\cygwin\bin\cygpanel6.dll - os=4.0 img=1.0 sys=4.0
"cygpanel6.dll" v0.0 ts=2001/9/30 4:43
163k 2001/05/06 C:\cygwin\bin\cygpng2.dll - os=4.0 img=1.0 sys=4.0
"cygpng2.dll" v0.0 ts=2001/5/6 6:05
108k 2001/06/28 C:\cygwin\bin\cygreadline4.dll - os=4.0 img=1.0 sys=4.0
"cygreadline4.dll" v0.0 ts=2001/1/7 5:34
135k 2001/06/28 C:\cygwin\bin\cygreadline5.dll - os=4.0 img=1.0 sys=4.0
"cygreadline5.dll" v0.0 ts=2001/6/28 4:27
390k 2001/10/20 C:\cygwin\bin\cygtcl80.dll - os=4.0 img=1.0 sys=4.0
"cygtcl80.dll" v0.0 ts=2001/10/20 2:24
5k 2001/10/20 C:\cygwin\bin\cygtclpip80.dll - os=4.0 img=1.0 sys=4.0
10k 2001/10/20 C:\cygwin\bin\cygtclreg80.dll - os=4.0 img=1.0 sys=4.0
"cygtclreg80.dll" v0.0 ts=2001/10/20 2:24
245k 2001/06/12 C:\cygwin\bin\cygtiff3.dll - os=4.0 img=1.0 sys=4.0
"cygtiff3.dll" v0.0 ts=2001/6/12 19:25
623k 2001/10/20 C:\cygwin\bin\cygtk80.dll - os=4.0 img=1.0 sys=4.0
"cygtk80.dll" v0.0 ts=2001/10/20 2:25
41k 2001/07/04 C:\cygwin\bin\cygXpm-noX4.dll - os=4.0 img=1.0 sys=4.0
"cygXpm-noX4.dll" v0.0 ts=2001/7/4 3:21
45k 2001/07/04 C:\cygwin\bin\cygXpm-X4.dll - os=4.0 img=1.0 sys=4.0
"cygXpm-X4.dll" v0.0 ts=2000/11/20 3:45
49k 2001/02/03 C:\cygwin\bin\cygz.dll - os=4.0 img=1.0 sys=4.0
"cygz.dll" v0.0 ts=2001/2/3 21:35
714k 2001/11/05 C:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
"cygwin1.dll" v0.0 ts=2001/11/5 22:15
Cygwin DLL version info:
dll major: 1003
dll minor: 4
dll epoch: 19
dll bad signal mask: 19005
dll old termios: 5
dll malloc env: 28
api major: 0
api minor: 47
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 Nov 5 16:15:15 EST 2001
shared id: cygwin1S3
Use -h to see help about each section
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: 1.1.3: mmap() returns unusable memory segments: segm fault
2001-11-06 4:20 ` Lothar Linhard
@ 2001-11-06 5:05 ` Corinna Vinschen
2001-12-20 10:57 ` Lothar Linhard
0 siblings, 1 reply; 10+ messages in thread
From: Corinna Vinschen @ 2001-11-06 5:05 UTC (permalink / raw)
To: cygwin
On Tue, Nov 06, 2001 at 01:20:30PM +0100, Lothar Linhard wrote:
> Hi Corinna,
>
> thanks, I've installed 1.3.4-2 and can verify that the problem
> is fixed. I'm still enthusiastic about your response time.
>
> However, here is another problem I have detected:
>
> UNIX allows to do one unmap on memory space mapped by
> several continous mmaps. Cygwin's munmap doesnt. I can
It does as long as either the mapped object is a real file or
in case of anonymous mapping the mapped mem space consists of
fractions of 64K. In your example, the mem space is just too big
to allow that behaviour in the current implementation. It's
probably possible to get your testcase working as well. The mem
objects are maintained in a linked list. The whole stuff
is in mmap.cc in the cygwin sources. Feel free to send a patch.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Developer mailto:cygwin@cygwin.com
Red Hat, Inc.
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Bug reporting: http://cygwin.com/bugs.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: 1.1.3: mmap() returns unusable memory segments: segm fault
2001-11-06 5:05 ` Corinna Vinschen
@ 2001-12-20 10:57 ` Lothar Linhard
2001-12-20 13:02 ` Corinna Vinschen
2001-12-21 12:59 ` Lothar Linhard
0 siblings, 2 replies; 10+ messages in thread
From: Lothar Linhard @ 2001-12-20 10:57 UTC (permalink / raw)
To: Corinna Vinschen
[-- Attachment #1: Type: TEXT/PLAIN, Size: 1376 bytes --]
Hi Corinna,
With cygwin's mmap.cc I guess, I cannot map more than 197 MB ?!
Is that correct?
In my application I always call mmap(NULL,size,PROT_RW,...)
here is what I get:
mmap segment[0]: 0x202d0000...0x202dffff = 64 kB
mmap segment[1]: 0x202e0000...0x202effff = 64 kB
mmap segment[2]: 0x202f0000...0x2030ffff = 128 kB
mmap segment[3]: 0x20310000...0x2034ffff = 256 kB
mmap segment[4]: 0x20350000...0x203cffff = 512 kB
mmap segment[5]: 0x209d0000...0x20acffff = 1024 kB
mmap segment[6]: 0x20ad0000...0x20ccffff = 2048 kB
mmap segment[7]: 0x20cd0000...0x210cffff = 4096 kB
mmap segment[8]: 0x210d0000...0x218cffff = 8192 kB
mmap segment[9]: 0x218d0000...0x228cffff = 16384 kB
mmap segment[10]: 0x228d0000...0x248cffff = 32768 kB
mmap segment[11]: 0x248d0000...0x288cffff = 65536 kB
mmap segment[12]: 0x288d0000...0x2c8cffff = 65536 kB
Then, when I try to map another 16384 kB or more, I get
"Permission denied".
I tried cygwin.dll 1.3.4-2 and 1.3.6-6.
Just in case you don't konw or if you want to comment it.
Lothar.
========================================================================
Lothar Linhard | Tel.: +49-761-47094-12
Concept Engineering, Bötzinger Str. 29, | Fax.: +49-761-47094-29
79111 Freiburg, Germany. | Email: lothar@concept.de
========================================================================
[-- Attachment #2: output of cygcheck.exe -svr --]
[-- Type: TEXT/PLAIN, Size: 14781 bytes --]
Cygnus Win95/NT Configuration Diagnostics
Current System Time: Thu Dec 20 19:27:09 2001
Windows NT Ver 4.0 Build 1381 Service Pack 6
Path: .
H:\bin
C:\cygwin\usr\local\bin
C:\cygwin\bin
C:\cygwin\bin
C:\WINNT\system32
C:\WINNT
C:\Program Files\Bitkeeper
C:\tcltk83\bin
C:\tools
C:\tcltk82\bin
C:\tcltk81\bin
C:\tcltk80\bin
C:\PROGRA~1\BITKEE~1
C:\MSDEV\bin
C:\Program Files\DevStudio\SharedIDE\bin
SysDir: C:\WINNT\System32
WinDir: C:\WINNT
HOME = `H:\'
MAKEFLAGS = `--no-print-directory'
MAKE_MODE = `unix'
PWD = `/h'
USER = `lld'
CFLAGS = `-g'
COMPUTERNAME = `ERDE'
COMSPEC = `C:\WINNT\system32\cmd.exe'
EDITOR = `vi'
HOMEDRIVE = `H:'
HOMEPATH = `\'
HOMESHARE = `\\star\lld'
INCLUDE = `c:\msdev\include;c:\msdev\atl\include;c:\msdev\mfc\include;%include%'
LC_COLLATE = `C'
LIB = `c:\msdev\lib;c:\msdev\mfc\lib;%lib%'
LM_LICENSE_FILE = `1700@Jupiter'
LOGONSERVER = `\\ERDE'
MSDEVDIR = `C:\Program Files\DevStudio\SharedIDE'
NUMBER_OF_PROCESSORS = `1'
OLDPWD = `/usr/bin'
OS2LIBPATH = `C:\WINNT\system32\os2\dll;'
OS = `Windows_NT'
PATHEXT = `.COM;.EXE;.BAT;.CMD'
PROCESSOR_ARCHITECTURE = `x86'
PROCESSOR_IDENTIFIER = `x86 Family 6 Model 8 Stepping 3, GenuineIntel'
PROCESSOR_LEVEL = `6'
PROCESSOR_REVISION = `0803'
PROMPT = `$P$G'
PS1 = `\h\$ '
PURIFYOPTIONS = `-free-queue-length=1000 -chain-length=12'
SHLVL = `1'
SILOS_HOME = `C:\Program Files\Simucad\Silos2001Demo'
SIMUCAD_LICENSE_FILE = `C:\Program Files\Simucad\Silos2001Demo\silos.lic'
SYSTEMDRIVE = `C:'
SYSTEMROOT = `C:\WINNT'
TEMP = `C:\TEMP'
TERM = `cygwin'
UID = `52'
USERDOMAIN = `ERDE'
USERNAME = `lld'
USERPROFILE = `C:\WINNT\Profiles\lld'
WINDIR = `C:\WINNT'
_ = `/usr/bin/cygcheck.exe'
ceBoxLicence = `BK99B2J7DI8IF7 2FIEL1655GG2AL 2J2IG9CHF1J88G L941NNILJFFELB'
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\/c
(default) = `C:'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/ce
(default) = `\\star\ce'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/d
(default) = `D:'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/extra
(default) = `\\star\extra'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/h
(default) = `H:'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/home
(default) = `C:\home'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/obj
(default) = `D:\obj'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/s
(default) = `S:'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/tmp
(default) = `C:\tmp'
flags = 0x00000002
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/x
(default) = `X:'
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\mounts v2\/
(default) = `C:\cygwin'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
(default) = `C:/cygwin/bin'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
(default) = `C:/cygwin/lib'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options
a: fd N/A N/A
c: hd NTFS 4008Mb 41% CP CS UN PA FC System
d: hd NTFS 15610Mb 13% CP CS UN PA FC
e: cd N/A N/A
h: net NTFS 5321Mb 89% CP CS PA lld
s: net NTFS 3124Mb 61% CP CS PA ce
x: net NTFS 33926Mb 54% CP CS PA extra
C: /c user binmode
\\star\ce /ce user binmode
D: /d user binmode
\\star\extra /extra user binmode
H: /h user binmode
C:\home /home user binmode
D:\obj /obj user binmode
S: /s user binmode
C:\tmp /tmp user binmode
X: /x user binmode
. /cygdrive user binmode,noumount
C:\cygwin / system binmode
C:/cygwin/bin /usr/bin system binmode
C:/cygwin/lib /usr/lib system binmode
Found: C:\cygwin\bin\bash.exe
Found: C:\cygwin\bin\cat.exe
Found: C:\cygwin\bin\cpp.exe
Found: C:\cygwin\bin\find.exe
Found: C:\cygwin\bin\gcc.exe
Found: C:\cygwin\bin\gdb.exe
Found: C:\cygwin\bin\ld.exe
Found: C:\cygwin\bin\ls.exe
Found: C:\cygwin\bin\make.exe
Found: C:\cygwin\bin\sh.exe
56k 2000/12/03 C:\cygwin\bin\cygbz21.0.dll - os=4.0 img=1.0 sys=4.0
"cygbz21.0.dll" v0.0 ts=2000/11/21 0:53
821k 2001/11/19 C:\cygwin\bin\cygcrypto.dll - os=4.0 img=1.0 sys=4.0
"cygcrypto.dll" v0.0 ts=2001/11/20 0:42
102k 2001/12/06 C:\cygwin\bin\cygcurl-2.dll - os=4.0 img=1.0 sys=4.0
"cygcurl-2.dll" v0.0 ts=2001/12/6 19:45
34k 2001/09/30 C:\cygwin\bin\cygform6.dll - os=4.0 img=1.0 sys=4.0
"cygform6.dll" v0.0 ts=2001/9/30 4:43
18k 2000/10/23 C:\cygwin\bin\cyggdbm.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm.dll" v0.0 ts=2000/10/23 4:26
17k 2001/06/28 C:\cygwin\bin\cyghistory4.dll - os=4.0 img=1.0 sys=4.0
"cyghistory4.dll" v0.0 ts=2001/1/7 5:34
21k 2001/06/28 C:\cygwin\bin\cyghistory5.dll - os=4.0 img=1.0 sys=4.0
"cyghistory5.dll" v0.0 ts=2001/6/28 4:27
22k 2001/12/13 C:\cygwin\bin\cygintl-1.dll - os=4.0 img=1.0 sys=4.0
"cygintl-1.dll" v0.0 ts=2001/12/13 10:28
21k 2001/06/20 C:\cygwin\bin\cygintl.dll - os=4.0 img=1.0 sys=4.0
"cygintl.dll" v0.0 ts=2001/6/20 19:09
81k 2001/10/20 C:\cygwin\bin\cygitcl30.dll - os=4.0 img=1.0 sys=4.0
"cygitcl30.dll" v0.0 ts=2001/10/20 2:25
35k 2001/10/20 C:\cygwin\bin\cygitk30.dll - os=4.0 img=1.0 sys=4.0
"cygitk30.dll" v0.0 ts=2001/10/20 2:25
45k 2001/07/04 C:\cygwin\bin\cygjbig1.dll - os=4.0 img=1.0 sys=4.0
"cygjbig1.dll" v0.0 ts=2001/7/4 5:25
119k 2001/06/06 C:\cygwin\bin\cygjpeg6b.dll - os=4.0 img=1.0 sys=4.0
"cygjpeg6b.dll" v0.0 ts=2001/6/6 6:27
19k 2001/09/30 C:\cygwin\bin\cygmenu6.dll - os=4.0 img=1.0 sys=4.0
"cygmenu6.dll" v0.0 ts=2001/9/30 4:43
175k 2001/09/30 C:\cygwin\bin\cygncurses++6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++6.dll" v0.0 ts=2001/9/30 4:45
201k 2001/09/30 C:\cygwin\bin\cygncurses6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses6.dll" v0.0 ts=2001/9/30 4:42
12k 2001/09/30 C:\cygwin\bin\cygpanel6.dll - os=4.0 img=1.0 sys=4.0
"cygpanel6.dll" v0.0 ts=2001/9/30 4:43
40k 2001/11/21 C:\cygwin\bin\cygpcre.dll - os=4.0 img=1.0 sys=4.0
"cygpcre.dll" v0.0 ts=2001/11/21 23:15
39k 2001/11/21 C:\cygwin\bin\cygpcreposix.dll - os=4.0 img=1.0 sys=4.0
"cygpcreposix.dll" v0.0 ts=2001/11/21 23:15
163k 2001/05/06 C:\cygwin\bin\cygpng2.dll - os=4.0 img=1.0 sys=4.0
"cygpng2.dll" v0.0 ts=2001/5/6 6:05
108k 2001/06/28 C:\cygwin\bin\cygreadline4.dll - os=4.0 img=1.0 sys=4.0
"cygreadline4.dll" v0.0 ts=2001/1/7 5:34
135k 2001/06/28 C:\cygwin\bin\cygreadline5.dll - os=4.0 img=1.0 sys=4.0
"cygreadline5.dll" v0.0 ts=2001/6/28 4:27
66k 2001/11/20 C:\cygwin\bin\cygregex.dll - os=4.0 img=1.0 sys=4.0
"cygregex.dll" v0.0 ts=2001/11/20 15:44
231k 2001/11/19 C:\cygwin\bin\cygssl.dll - os=4.0 img=1.0 sys=4.0
"cygssl.dll" v0.0 ts=2001/11/20 0:42
390k 2001/10/20 C:\cygwin\bin\cygtcl80.dll - os=4.0 img=1.0 sys=4.0
"cygtcl80.dll" v0.0 ts=2001/10/20 2:24
5k 2001/10/20 C:\cygwin\bin\cygtclpip80.dll - os=4.0 img=1.0 sys=4.0
10k 2001/10/20 C:\cygwin\bin\cygtclreg80.dll - os=4.0 img=1.0 sys=4.0
"cygtclreg80.dll" v0.0 ts=2001/10/20 2:24
245k 2001/06/12 C:\cygwin\bin\cygtiff3.dll - os=4.0 img=1.0 sys=4.0
"cygtiff3.dll" v0.0 ts=2001/6/12 19:25
623k 2001/10/20 C:\cygwin\bin\cygtk80.dll - os=4.0 img=1.0 sys=4.0
"cygtk80.dll" v0.0 ts=2001/10/20 2:25
41k 2001/07/04 C:\cygwin\bin\cygXpm-noX4.dll - os=4.0 img=1.0 sys=4.0
"cygXpm-noX4.dll" v0.0 ts=2001/7/4 3:21
45k 2001/07/04 C:\cygwin\bin\cygXpm-X4.dll - os=4.0 img=1.0 sys=4.0
"cygXpm-X4.dll" v0.0 ts=2000/11/20 3:45
49k 2001/02/03 C:\cygwin\bin\cygz.dll - os=4.0 img=1.0 sys=4.0
"cygz.dll" v0.0 ts=2001/2/3 21:35
720k 2001/12/08 C:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
"cygwin1.dll" v0.0 ts=2001/12/8 23:02
Cygwin DLL version info:
DLL version: 1.3.6
DLL epoch: 19
DLL bad signal mask: 19005
DLL old termios: 5
DLL malloc env: 28
API major: 0
API minor: 47
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: Sat Dec 8 17:02:30 EST 2001
CVS tag: cygwin-1-3-6-6
Shared id: cygwin1S3
Cygwin Package Information
Last downloaded files to:
Last downloaded files from: ftp://ftp.uni-erlangen.de/pub/pc/gnuwin32/cygwin/mirrors/cygnus
Package Version
ash 20011018-1
autoconf 2.52a-1
autoconf-devel 2.52-4
autoconf-stable 2.13-4
automake 1.5b-1
automake-devel 1.5-5
automake-stable 1.4p5-5
bash 2.05a-2
bc 1.06-1
binutils 20011002-1
bison 1.28-1
byacc 1.9-1
bzip2 1.0.1-6
clear 1.0
compface 1.4-5
cpio 2.4.2
cron 3.0.1-5
crypt 1.0-1
ctags 5.0.1-1
curl 7.9.2-1
cvs 1.11.0-1
cygrunsrv 0.94-2
cygutils 0.9.7-1
cygwin 1.3.6-6
dejagnu 20010117-1
diff 0.0
expect 20010117-1
figlet 2.2-1
file 3.37-1
fileutils 4.1-1
findutils 4.1
flex 2.5.4-1
fortune 1.8-1
gawk 3.0.4-1
gcc 2.95.3-5
gdb 20010428-3
gdbm 1.8.0-3
gettext 0.10.40-1
ghostscript 6.51-1
gperf 0.0
grep 2.4.2-1
groff 1.17.2-1
gzip 1.3.2-1
indent 2.2.6-2
inetutils 1.3.2-16
irc 20010101-1
jbigkit 1.2-4
jpeg 6b-4
less 358-3
libintl 0.10.38-3
libintl1 0.10.40-1
libncurses5 5.2-1
libncurses6 5.2-2
libpng 1.0.11-1
login 1.4-2
lynx 2.8.4-1
m4 0.0
make 3.79.1-5
man 1.5g-2
mingw 20010917-1
mingw-runtime 1.2-1
mktemp 1.4-1
mt 2.0.1-1
mutt 1.2.5i-6
nano 1.0.6-1
ncftp 3.0.2-2
ncurses 5.2-7
newlib-man 20001118-1
opengl 1.1.0-5
openssh 3.0.2p1-3
openssl 0.9.6b-2
patch 2.5-2
pcre 3.7-1
perl 5.6.1-2
popt 1.6.2-1
postgresql 7.1.3-1
python 2.1.1-2
readline 4.2-3
regex 4.4-2
rsync 2.4.6-3
rxvt 2.7.2-6
sed 3.02-1
sh-utils 2.0-2
sharutils 4.2.1-2
shellutils 0.0
shutdown 1.2-2
squid 2.4-STABLE20010508
ssmtp 2.38.7-3
tar 1.13.19-1
tcltk 20001125-1
tcsh 6.10.00-3
termcap 20010825-1
terminfo 5.2-1
tetex-beta 20001218-1
texinfo 4.0-5
textutils 2.0.16-1
tiff 3.5.6beta-2
time 1.7-1
unzip 5.41-1
vim 6.0.93-1
w32api 1.2-1
wget 1.7-1
which 1.5-1
xpm 4.0.0-2
xpm-nox 4.1.0-1
zip 2.3-1
zlib 1.1.3-6
Use -h to see help about each section
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: 1.1.3: mmap() returns unusable memory segments: segm fault
2001-12-20 10:57 ` Lothar Linhard
@ 2001-12-20 13:02 ` Corinna Vinschen
2001-12-21 12:59 ` Lothar Linhard
1 sibling, 0 replies; 10+ messages in thread
From: Corinna Vinschen @ 2001-12-20 13:02 UTC (permalink / raw)
To: cygwin
On Thu, Dec 20, 2001 at 07:40:58PM +0100, Lothar Linhard wrote:
> Hi Corinna,
>
> With cygwin's mmap.cc I guess, I cannot map more than 197 MB ?!
> Is that correct?
>
> In my application I always call mmap(NULL,size,PROT_RW,...)
> here is what I get:
> [...]
> mmap segment[12]: 0x288d0000...0x2c8cffff = 65536 kB
>
> Then, when I try to map another 16384 kB or more, I get
> "Permission denied".
>
> I tried cygwin.dll 1.3.4-2 and 1.3.6-6.
> Just in case you don't konw or if you want to comment it.
Quoted from MSDN: "Windows NT/2000/XP: If the file-mapping object is
backed by the paging file (hFile is INVALID_HANDLE_VALUE), the paging
file must be large enough to hold the entire mapping. If it is not,
MapViewOfFile fails."
In other words, you can't mmap() more anonymous memory as your
pagefile has room for.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: 1.1.3: mmap() returns unusable memory segments: segm fault
2001-12-20 10:57 ` Lothar Linhard
2001-12-20 13:02 ` Corinna Vinschen
@ 2001-12-21 12:59 ` Lothar Linhard
1 sibling, 0 replies; 10+ messages in thread
From: Lothar Linhard @ 2001-12-21 12:59 UTC (permalink / raw)
To: Corinna Vinschen; +Cc: Heinz Brüderlin
Hi Corinna,
please ignore my prev message. After adding another
500MB swap space on my NT4.0, it worked (don't know
why my old swap settings min=150MB max=500MB weren't
enough for my application that mmaps ~390MB total).
I detected another problem with mmap from real files
(above, I used MAP_ANON) - now I get crashes where
it worked before. I'll recontact you when I can
be more specific.
For now: Merry Christmas and all the best for
the new Year.
Lothar.
On Thu, 20 Dec 2001, Lothar Linhard wrote:
> Hi Corinna,
>
> With cygwin's mmap.cc I guess, I cannot map more than 197 MB ?!
> Is that correct?
>
> In my application I always call mmap(NULL,size,PROT_RW,...)
> here is what I get:
> mmap segment[0]: 0x202d0000...0x202dffff = 64 kB
> mmap segment[1]: 0x202e0000...0x202effff = 64 kB
> mmap segment[2]: 0x202f0000...0x2030ffff = 128 kB
> mmap segment[3]: 0x20310000...0x2034ffff = 256 kB
> mmap segment[4]: 0x20350000...0x203cffff = 512 kB
> mmap segment[5]: 0x209d0000...0x20acffff = 1024 kB
> mmap segment[6]: 0x20ad0000...0x20ccffff = 2048 kB
> mmap segment[7]: 0x20cd0000...0x210cffff = 4096 kB
> mmap segment[8]: 0x210d0000...0x218cffff = 8192 kB
> mmap segment[9]: 0x218d0000...0x228cffff = 16384 kB
> mmap segment[10]: 0x228d0000...0x248cffff = 32768 kB
> mmap segment[11]: 0x248d0000...0x288cffff = 65536 kB
> mmap segment[12]: 0x288d0000...0x2c8cffff = 65536 kB
>
> Then, when I try to map another 16384 kB or more, I get
> "Permission denied".
>
> I tried cygwin.dll 1.3.4-2 and 1.3.6-6.
> Just in case you don't konw or if you want to comment it.
>
> Lothar.
> ========================================================================
> Lothar Linhard | Tel.: +49-761-47094-12
> Concept Engineering, Bötzinger Str. 29, | Fax.: +49-761-47094-29
> 79111 Freiburg, Germany. | Email: lothar@concept.de
> ========================================================================
>
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^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2001-12-21 20:56 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2001-11-05 12:08 1.1.3: mmap() returns unusable memory segments: segm fault Lothar Linhard
2001-11-05 13:01 ` Corinna Vinschen
2001-11-05 13:31 ` Christopher Faylor
2001-11-06 2:16 ` Lothar Linhard
2001-11-06 2:46 ` Corinna Vinschen
2001-11-06 4:20 ` Lothar Linhard
2001-11-06 5:05 ` Corinna Vinschen
2001-12-20 10:57 ` Lothar Linhard
2001-12-20 13:02 ` Corinna Vinschen
2001-12-21 12:59 ` Lothar Linhard
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