From Gerri:

Patch introducing parallel startup of the slave servers. This new feature
will considerably reduce the startup time in PROOF setups with many 10's
to 100's of slaves. By default this feature is off, turn it on in the
[system].rootrc file by uncommenting the line:

Proof.ParallelStartup: yes

Summary of changes:

Index: Makefile

  - Add the thread lib to PROOFLIBS

Index: base/inc/TVirtualMutex.h, base/src/TVirtualMutex.cxx

  - Add global mutexes to protect printing and authentication

Index: base/src/TError.cxx

  - Protect static buffer in DebugPrint with specific global mutex

Index: config/Makefile.depend

  - Add dependence on thread lib for PROOF

Index: config/rootrc.in

  - Add description of new envs
      Proof.ParallelStartup, Auth.Timeout, ProofServ.UseSSH

Index: net/inc/TAuthenticate.h

  - Add new member fTimeout to indicate timeout situations
    and new method HasTimedOut() to retrieve it.
  - Add new static member with the timeout value in sec
    and method SetTimeOut() to set it
  - Add new method CatchTimeOut() called at timeout expiration


Index: net/inc/THostAuth.h , net/src/THostAuth.cxx

  - Add new method SetLast() to lower pririty of an attempted
    protocol that has timed-out


Index: net/src/TAuthenticate.cxx

  - Implementation of the new timeout setup using TTimer
  - Add protection using specific global mutex
  - change to start with lower case some local variables
    in Authenticate
  - re-introduce call to THostAuth::CountFailure() (which got
    lost in a previous patch)
  - Disable by default SSH for PROOF servers
  - fix a couple of small memory leaks

Index: net/src/TPSocket.cxx

  - Fix logic in Close() (if called too early (e.g. timeout)
    the underlying socket can still be open and needs to be
    closed).


Index: net/src/TSocket.cxx

  - initialize member fTcpWindowSize in all constructors
  - modify error logging after an unsuccessful authentication
    attempt, checking for timeouts.
  - disable SSH for PROOF servers

Index: proof/inc/TProof.h

  - patch for parallel startup using threads:
    - new methods SlaveStartupThread(void *) and
      SubmasterStartupThread(void *) executed in threads
    - add Bool_t argument to all implementations of StartSlaves

Index: proof/src/TProof.cxx

  - patch for parallel startup using threads:
    - add internal classes ProofThread and ProofThreadArg to keep
      track of started threads and to pass arguments to threads
  - cleanup fPlayer and fFeedBack in destructor

Index: rpdutils/src/rpdutils.cxx

  - fix small memory leak

Index: thread/src/TThread.cxx

  - initialize new global mutexes


git-svn-id: http://root.cern.ch/svn/root/trunk@11687 27541ba8-7e3a-0410-8455-c3a389f83636