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From: Marcel Moolenaar <marcel@FreeBSD.org>
Date: Sun, 18 Jul 2004 20:28:07 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
	cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/kern imgact_elf.c
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marcel      2004-07-18 20:28:07 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             imgact_elf.c 
  Log:
  After maintaining previous behaviour in writing out the core notes, it's
  time now to break with the past: do not write the PID in the first note.
  Rationale:
  1.  [impact of the breakage] Process IDs in core files serve no immediate
      purpose to the debugger itself. They are only useful to relate a core
      file to a process. This can provide context to the person looking at
      the core file, provided one keeps track of this. Overall, not having
      the PID in the core file is only in very rare occasions unfortunate.
  2.  [reason of the breakage] Having one PRSTATUS note contain the PID,
      while all others contain the LWPID of the corresponding kernel thread
      creates an irregularity for the debugger that cannot easily be worked
      around. This is caused by libthread_db correlating user thread IDs to
      kernel thread (aka LWP) IDs and thus aware of the actual LWPIDs.
  
  Update comments accordingly.
  
  Revision  Changes    Path
  1.153     +5 -8      src/sys/kern/imgact_elf.c