[lkml]   [2003]   [Mar]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH] ptrace on stopped processes (2.4)
    On Tue, Mar 25, 2003 at 10:48:42AM -0300, Werner Almesberger wrote:
    > Daniel Jacobowitz wrote:
    > > No, that's not what I meant. When you attach using GDB, there is no
    > > way for GDB to determine if the process was previously stopped or
    > > running.
    > Likewise, there's a race condition with any other concurrent use
    > of SIGSTOP.
    > Perhaps one could introduce a PTRACE_ATTACH2 that uses "addr" to
    > indicate the signal that should be used to sychronize attaching.
    > That way, programs that use STOP/CONT for their own purposes could
    > be attached to with ptrace(PTRACE_ATTACH2,pid,SIGTRAP,0), or such.
    > If the process is already stopped, the debugger would be notified
    > with WSTOPSIG set to that signal instead of SIGTRAP.

    Have you got an example that needs this? I'm not terribly concerned;
    GDB's handling of SIGSTOP has always been pretty bad. Strace is a bit

    Daniel Jacobowitz
    MontaVista Software Debian GNU/Linux Developer
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 13:34    [W:0.020 / U:36.980 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site