Date: Sun, 17 Dec 2000 21:19:37 +0200
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: Tuukka Kalliokoski <tuukka DOT kalliokoski AT koti DOT tpo DOT fi>
Message-Id: <9003-Sun17Dec2000211936+0200-eliz@is.elta.co.il>
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CC: djgpp AT delorie DOT com
In-reply-to: <bg0q3t401q1enh09c6rssnieolj6f1o2ru@4ax.com> (message from Tuukka
	Kalliokoski on Sun, 17 Dec 2000 20:18:43 +0200)
Subject: Re: Problems with LWP 2.0 / djgpp 2.03
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> From: Tuukka Kalliokoski <tuukka DOT kalliokoski AT koti DOT tpo DOT fi>
> Newsgroups: comp.os.msdos.djgpp
> Date: Sun, 17 Dec 2000 20:18:43 +0200
>
> Exiting due to signal SIGSEGV
> General Protection Fault at eip=000060b4
> eax=3d4e464c ebx=0013b1b8 ecx=00000001 edx=0013b1bc esi=00000003
> edi=00000001
> ebp=00132f60 esp=00132f54 program=C:\DJGPP\CONTRIB\LWP\EXAMPLE1.EXE
> cs: sel=00af  base=83397000  limit=00142fff
> ds: sel=00b7  base=83397000  limit=00142fff
> es: sel=00b7  base=83397000  limit=00142fff
> fs: sel=0087  base=00015250  limit=0000ffff
> gs: sel=00c7  base=00000000  limit=0010ffff
> ss: sel=00b7  base=83397000  limit=00142fff
> App stack: [00133000..000b3000]  Exceptn stack: [0001354c..0001160c]
> 
> Call frame traceback EIPs:
>   0x000060b4
>   0x00001fec
>   0x00001806
>   0x00004332
> 
> C:\djgpp\contrib\LWP>

The DJGPP port of LWP is mentioned in section 22.4 of the DJGPP FAQ
list.  Are you using a ported version?  If not, it's quite possible
that the code you are using isn't supposed to work with DJGPP.

> The program should alternately print MAIN and PROC n as main and 4
> threads execute. As you see, my compilation only executes the main
> thread. After keypress the problam should kill the threads and exit,
> mine gets a SIGSEGV.

What does the program do in each thread?  Due to the way signals are
implemented in DJGPP, some activities, such as DOS function calls,
stop threading until the DOS call returns.

> I am running Win98

Ouch, Windows.  I'd suggest to try in DOS mode first, with CWSDPMI.
Windows has some nasty tricks as far as timer interrupt is concerned
(for example, a program that is not in the foreground, doesn't get
most of the timer interrupts).