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
alfred at freebsd.org
Wed Apr 11 19:59:28 UTC 2007
* Ed Maste <ed.maste at gmail.com> [070410 12:47] wrote:
> On 10/04/07, Xin LI <delphij at 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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