[BProc] Announce: bproc 3.1.4

[Erik A. H. <er...@he...>]

BProc 3.1.4 is up on sourceforge.

http://sourceforge.net/project/showfiles.php?group_id=24453

Attached below are the change log and release notes...

- Erik

Release notes:
3.1.4 ---------------------------------------------------------------------

  Lots more bugfixes here.  Most of them come from seeing problems
  running under high load (i.e. 10000+ processes).  There couple of
  minor new features and changes as well.  See the change log for
  details.

Change log:
Changes from 3.1.3 to 3.1.4

        * Added come code to work around a Linux TCP bug.  The symptom of
        this one is two machines where the machine doing the connect has a
        TCP connection in the ESTABLISHED state and the other machine has
        no connection at all.  This bug exists in 2.4.13 and 2.4.16.  I
        noticed it when migrating 10000 jobs off the front end machine
        simultaneously.  About 10 or so would end up in that state every
        time.  This was not detected since the connecting end was blocking
        on a read.

        * Added some code to retry connections for "Connection timed out"
        during moves.  This seems necessary under really high load.  ...or
        maybe if your network sucks.

        * Fixed problems where signals would sometimes not be forwarded to
        remote processes.

        * Fixed a possible race in ghost status updates which could lead to
        not seeing stopped children with wait()

        * Cleaned up some locking in the ghost code.

        * Backed out signal bypass stuff.  I'm not sure it's broken but
        I've seen some weird stuff going on under high load so it's out
        for now.

        * Fixed a possible kernel oops in bproc_rfork.

        * Fixed bpsh IO fowarding race condition.  bpsh could fail to
        close stdin for the remote process if it received EOF on its stdin
        before the connection from the remote process AND the size of
        input on bpsh's stdin is zero bytes.

        * Added "pingtimeout" to the configuration language... finally.
        The configuration affects the master and the slave and can be
        changed at runtime via SIGHUP to the master.

        * Added sysctl interface.  This is mostly for debugging right now
        but I expect more will go in there in the future.

        * Added non-blocking versions of reboot, halt, poweroff.  The
        blocking versions of those calls are now interruptible.

        * Fixed a deadlock problem in VMADump.  The symptom of this was
        'ps' or anything else that read /proc getting hung up.

        * Fixed tiny bug in bplib that kept -d from working.