[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.4-57-g0d70f9d

[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.4-57-g0d70f9d

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- Log -----------------------------------------------------------------
commit 0d70f9d8eacf4e6967fed19099a20509ce9f2071
Author: Josh Stone <jistone@redhat.com>
Date:   Tue Feb 8 15:06:25 2011 -0800

    Fix the indentation of systemtap_session::usage

commit 504d2b61306d133bfde0dcfee542eb48479b6851
Author: Josh Stone <jistone@redhat.com>
Date:   Tue Feb 8 15:06:25 2011 -0800

    Clean up exit paths
    
    We need to strive not to leave files/processes around, so exit() calls
    are reduced to only places where nothings been allocated yet.  Errors
    are rarely so fatal to require immediate exit.

commit 4c156a0e285d3853ccd514484b73fce6153081ba
Author: Josh Stone <jistone@redhat.com>
Date:   Tue Feb 8 15:06:25 2011 -0800

    Use a ControlMaster for ssh remotes
    
    We can start the ssh remote with a ControlMaster connection, using a
    unique socket in the tmpdir, and then each subsequent remote command can
    reuse that connection.
    
    * remote.cxx (ssh_remote::open_control_master): Connect to the remote
      host with a ControlPath that later commands can reuse.  The relevant
      options are saved in member ssh_opts.
      (ssh_remote::close_control_master): Ask the control process to exit.
      (ssh_remote::get_uname, ::start, ::finish): Start using ssh_opts, so
      the ControlPath is always specified.

commit 90cbace96a53f23c56d9efcb69df71c881b20088
Author: Josh Stone <jistone@redhat.com>
Date:   Tue Feb 8 15:06:25 2011 -0800

    Precreate the main tmpdir
    
    Create the primary temp dir early on, so we have a place to store
    temporary data for remotes (like control socket paths).
    
    * main.cxx (main): Create the tmpdir before remotes are started.
      (create_temp_dir, remove_temp_dir): Tolerate repeat calls.

commit abc15290045656053b649d3b6d57ad6a4220a07a
Author: Josh Stone <jistone@redhat.com>
Date:   Tue Feb 8 15:06:25 2011 -0800

    Use a proper session copier when cloning
    
    * session.cxx (systemtap_session): Define copy and assignment
      constructors without implementation, to avoid implicit behavior.
      Add a new copy constructor with a new kernel/arch.
      (systemtap_session::clone): Use the new copier.

-----------------------------------------------------------------------

Summary of changes:
 buildrun.cxx   |   11 ++-
 coveragedb.cxx |    2 +-
 main.cxx       |   32 +++++-
 remote.cxx     |  146 ++++++++++++++++--------
 session.cxx    |  355 +++++++++++++++++++++++++++++++++++++-------------------
 session.h      |   11 ++
 util.cxx       |    2 +-
 7 files changed, 381 insertions(+), 178 deletions(-)


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systemtap: system-wide probe/trace tool