Date: Fri, 12 Apr 2002 17:20:48 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: John Baldwin <jhb@FreeBSD.org> Cc: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org Subject: RE: cvs commit: src/sys/kern sys_process.c Message-ID: <XFMail.20020412172048.jhb@FreeBSD.org> In-Reply-To: <200204122117.g3CLHcF92496@freefall.freebsd.org>
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On 12-Apr-2002 John Baldwin wrote: > jhb 2002/04/12 14:17:38 PDT > > Modified files: > sys/kern sys_process.c > Log: > Rework ptrace(2) to be more locking friendly. We do any needed copyin()'s > and acquire the proctree_lock if needed first. Then we lock the process > if necessary and fiddle with it as appropriate. Finally we drop locks and > do any needed copyout's. This greatly simplifies the locking. I've tested this on i386 lightly (gdb still works for a trivial program as far as breakpoints and running it.) Since gdb on alpha is busted this wasn't tested on alpha. :-( I would appreciate if people would make sure I haven't broken things. They shouldn't be broken in theory, but practice doesn't always == theory. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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