Re: GDB: Does "catch vfork" work?
Re: GDB: Does "catch vfork" work?
- Subject: Re: GDB: Does "catch vfork" work?
- From: Daniel Jalkut <email@hidden>
- Date: Sun, 09 Oct 2005 11:20:46 -0400
On Oct 9, 2005, at 11:07 AM, Justin C. Walker wrote:
This was a "hack" made at a time when copy-on-write had either not
been invented, or was not possible on much of the hardware (i.e.,
pdp-11's) in use. The intent was to speed up the typical fork()/
exec() sequence by avoiding the copy of the process space.
Maybe you can explain the reasoning behind what SystemUIServer seems
to be doing when a screen capture occurs. It vforks, then from the
parent (I'm in gdb observing that vfork has returned 0), it
immediately forks. It's like a double-fork-wammy. Any idea what the
purpose of that might be?
Daniel
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