From: Andrew Cagney <ac131313@cygnus.com>
To: Jonathan Larmour <jlarmour@redhat.co.uk>
Cc: gdb@sourceware.cygnus.com
Subject: Re: x86 linux GDB and SIGALRM
Date: Sat, 01 Apr 2000 00:00:00 -0000 [thread overview]
Message-ID: <38DF3159.DF837D7D@cygnus.com> (raw)
Message-ID: <20000401000000.TYfhranLr3Bu3L3w4NmliPI7128Fmxqgdiv3OjV6z9Q@z> (raw)
In-Reply-To: <38DBF46A.8EABE9BF@redhat.co.uk>
Jonathan Larmour wrote:
>
> I have an x86 Linux program here that uses SIGALRM for regular periodic
> "interrupts". SIGVTALRM isn't really precise enough for it's needs.
>
> However I noticed that "si" doesn't work - it interferes with the ptrace/GDB
> interface. It seems that when ptrace(PTRACE_SINGLESTEP,...) returns, a
> SIGALRM is pending, and the single step gets lost.
>
> Now this works in GDB 4.18 so this is a regression. But does anyone have any
> clues as to what's *meant* to be going on here, and how I fix GDB?
Can anyone independantly confirm/deny this?
Andrew
next prev parent reply other threads:[~2000-04-01 0:00 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-03-24 15:04 Jonathan Larmour
2000-03-27 2:03 ` Andrew Cagney [this message]
2000-03-27 2:20 ` Mark Kettenis
2000-04-01 0:00 ` Mark Kettenis
2000-04-10 14:21 ` Jonathan Larmour
2000-05-01 11:53 ` [RFA] " Mark Kettenis
2000-05-01 14:05 ` Jim Blandy
2000-04-01 0:00 ` Andrew Cagney
2000-04-01 0:00 ` Jonathan Larmour
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