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From:	"Christophe BARIBAUD" <cbaribau AT jnjfr DOT jnj DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: multithreading
Date:	Thu, 7 Feb 2002 13:13:58 +0100
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There are two versions of LWP, one works and the other don't...
Be sure to use the good one :
http://homepages.fh-giessen.de/~hg10836/stuff/jtlwp21s.zip

It doesn't work under Windows 2000 because signals don't work under windows
;-(
but if you don't use preemptive mode, it works fine.

printf and sqrt and many other functions are not reentrant, so you need a
mutex to use them...

Regards


"Paul Muehlbach" <traexx AT gmx DOT de> a écrit dans le message news:
29223 DOT 1013001521 AT www3 DOT gmx DOT net...
> On Tue, 5 Feb 2002, Paul Muehlbach wrote:
>
> > I have the following problem: I need a multithreading library,found lwp
> and
> > if I want to use it it crashs with PAGEFAULT (the given examples to!).
> > Nothing helps! It crashes after the start of the program. I use Win95
and
> a
> > FPU-Emulator.
>
> Please post here the full text of the crash message, after running SYMIFY
> on it.
>
> I work with LWP 2.0:
>
> *********Program*********
>
> LWP: Example1.
> This program spawns 4 threads that each print a message.
> Press any key to start....MAIN
> Exiting due to signal SIGSEGV
> General Protection Fault at eip=00003fc5
> eax=00000000 ebx=00000021 ecx=00000000 edx=0000fe20 esi=00000006
> edi=00093b54
> ebp=00093b30 esp=00093b1c program=C:\THREAD\CONTRIB\LWP\EXAMPLE1.EXE
> cs: sel=00a7  base=82954000  limit=000affff
> ds: sel=00af  base=82954000  limit=000affff
> es: sel=00b7  base=82954000  limit=000affff
> fs: sel=0087  base=0000fe20  limit=0000ffff
> gs: sel=00bf  base=00000000  limit=0010ffff
> ss: sel=00af  base=82954000  limit=000affff
> App stack: [00095070..00015070]  Exceptn stack: [00014fd0..00013090]
>
> Call frame traceback EIPs:
>   0x00003fc5 __lwpasmEnd+149
>   0x00008def __write+159
>   0x0000f44a __flsbuf+298
>   0x0000e2b2 _putc+178
>   0x0000ac7b __doprnt+147
>   0x00005e16 _printf+22
>   0x00001fd2 _main+322, line 54 of example1.c
>   0x00005a12 ___crt1_startup+178
>
> C:\thread\CONTRIB\LWP>symify example1.exe
>
> --
> GMX - Die Kommunikationsplattform im Internet.
> http://www.gmx.net
>

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