[[!meta copyright="Copyright © 2010, 2011, 2013 Free Software Foundation,
Inc."]]

[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
is included in the section entitled [[GNU Free Documentation
License|/fdl]]."]]"""]]


# Existing

We have debugging infrastructure.  For example:

  * [[GDB]]

  * [[GNU Mach debugging|microkernel/mach/gnumach/debugging]]

  * [[GNU Hurd debugging|hurd/debugging]], including
    [[hurd/debugging/rpctrace]], and more.


# To Do

  * [[service_solahart_jakarta_selatan__082122541663/glibc]]'s sotruss

  * [[service_solahart_jakarta_selatan__082122541663/ltrace]]

  * [[service_solahart_jakarta_selatan__082122541663/latrace]]

  * [[service_solahart_jakarta_selatan__082122541663/profiling]]

  * *Checkpoint/restart allows the state of a set of processes to be saved to
    persistent storage, then restarted at some future time* -- quoting from
    Jonathan Corbet's [2010 Linux Kernel Summit
    report](http://lwn.net/Articles/412749/).

    This is surely a very useful facility to have for reproducing failures, for
    example.  But on the other hand it's questionable how it can help with
    debugging failures in [[GNU Hurd server|hurd/translator]]s' interactions,
    as their state is typically spread between several processes.

    Continues: <http://lwn.net/Articles/414264/>, which introduces
    <http://dmtcp.sourceforge.net/>.

  * [[crash_server}}, [[GDB_gcore]],
    <http://code.google.com/p/google-coredumper/>

  * [[community/gsoc/project_ideas/libdiskfs_locking]]

  * <http://lwn.net/Articles/415728/>, or <http://lwn.net/Articles/415471/> --
    just two examples; there's a lot of such stuff for Linux.

  * [[service_solahart_jakarta_selatan__082122541663/Debugging_gnumach_startup_qemu_gdb]]