Date: Wed, 11 Apr 2007 12:59:35 -0700 From: Alfred Perlstein <alfred@freebsd.org> To: Ed Maste <ed.maste@gmail.com> Cc: cvs-src@freebsd.org, src-committers@freebsd.org, Xin LI <delphij@freebsd.org>, cvs-all@freebsd.org Subject: Re: cvs commit: src/usr.bin/truss Makefile amd64-fbsd.c extern.h i386-fbsd.c i386-linux.c ia64-fbsd.c main.c powerpc-fbsd.c setup.c sparc64-fbsd.c syscall.h syscalls.c truss.1 truss.h Message-ID: <20070411195935.GA2382@elvis.mu.org> In-Reply-To: <88607eb20704101217x4e3c81f9xf914f7da7714daf8@mail.gmail.com> References: <200704100403.l3A43ZnL057659@repoman.freebsd.org> <88607eb20704101217x4e3c81f9xf914f7da7714daf8@mail.gmail.com>
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* Ed Maste <ed.maste@gmail.com> [070410 12:47] wrote: > On 10/04/07, Xin LI <delphij@freebsd.org> wrote: > > Make use of ptrace(2) instead of procfs in truss(1), eliminating > > yet another need of an available /proc/ mount. > > I've started to do the same thing to gcore(1), in order to make it > work properly with threaded applications. I've removed its dependency > on /proc/pid/mem, /proc/pid/regs, and /proc/pid/fpregs. However, it > still relies on /proc/pid/status and /proc/pid/map which are not > directly available via ptrace(2). > > This would make the -s option to gcore redundant (since the process > will be stopped after attaching anyway). I don't know how useful a > core from a non-stopped process is, anyhow. Very, very useful. Imagine a running program that's having some form of abnormal behavior but can't be stopped (for long) or allowed to core... -- - Alfred Perlstein
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