On 4/10/07, Ed Maste <[EMAIL PROTECTED]> wrote:
On 10/04/07, Xin LI <[EMAIL PROTECTED]> 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.
Fork it to get a COW snapshot and then gcore the stopped forked process.
(Yes this would probably require a new syscall or a new ptrace
interface, but it would be trivial to add).
-Kip
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