(file) Return to ThreadVms.cpp CVS log (file) (dir) Up to [Pegasus] / pegasus / src / Pegasus / Common

File: [Pegasus] / pegasus / src / Pegasus / Common / Attic / ThreadVms.cpp (download)
Revision: 1.9, Wed Aug 9 20:12:42 2006 UTC (17 years, 10 months ago) by mike
Branch: MAIN
CVS Tags: TASK-PEP362_RestfulService-merged_out_from_trunk, TASK-PEP348_SCMO-merged_out_from_trunk, TASK-PEP317_pullop-merged_out_from_trunk, TASK-PEP317_pullop-merged_in_to_trunk, TASK-PEP311_WSMan-root, TASK-PEP311_WSMan-branch, HPUX_TEST, HEAD
Changes since 1.8: +0 -0 lines
FILE REMOVED
BUG#: 5314
TITLE: IPC Refactoring

DESCRIPTION: This patch cleans up the IPC related classes. It (1) reorganizes
related classes into their own headers, (2) makes the mutex class recursive to
eliminate recursive lock exclusion logic, (3) reimplements condition variables,
renames dozens of global functions.

//%2006////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
// Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation, The Open Group.
// Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; Symantec Corporation; The Open Group.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//==============================================================================
//
// Author: Markus Mueller (sedgewick_de@yahoo.de)
//
// Modified By: Sean Keenan, Hewlett-Packard Company (sean.keenan@hp.com)
//
//%/////////////////////////////////////////////////////////////////////////////

// These must be global to all threads

static int stackMul = 2;
static bool doneOnce = false;

PEGASUS_NAMESPACE_BEGIN

static sigset_t *block_signal_mask(sigset_t * sig)
{
  sigemptyset(sig);
  // should not be used for main()
  sigaddset(sig, SIGHUP);
  sigaddset(sig, SIGINT);
  // maybe useless, since KILL can't be blocked according to POSIX
  sigaddset(sig, SIGKILL);

  sigaddset(sig, SIGABRT);
  sigaddset(sig, SIGALRM);
  sigaddset(sig, SIGPIPE);

  sigprocmask(SIG_BLOCK, sig, NULL);
  return sig;
}

////////////////////////////////////////////////////////////////////////////

Thread::Thread(
	PEGASUS_THREAD_RETURN(PEGASUS_THREAD_CDECL * start) (void *),
	void *parameter,
	Boolean detached)
:_is_detached(detached),
_cancel_enabled(true),
_cancelled(false),
_suspend_count(),
_start(start),
_cleanup(),
_tsd(),
_thread_parm(parameter),
_exit_code(0)
{
  pthread_attr_init(&_handle.thatt);
  size_t stacksize;

  // 
  // This code uses a, 'hidden' (non-documented), VMS only, logical 
  //  name (environment variable), PEGASUS_VMS_THREAD_STACK_MULTIPLIER,
  //  to allow in the field adjustment of the thread stack size.
  //
  // We only check for the logical name once to not have an
  //  impact on performance.
  // 
  // Note:  This code may have problems in a multithreaded environment
  //  with the setting of doneOnce to true.
  // 
  // Current code in Cimserver and the clients do some serial thread
  //  creations first so this is not a problem now.
  // 
  if (!doneOnce)
  {
    // 
    // Test for the logical name.
    // 
    const char *env = getenv("PEGASUS_VMS_THREAD_STACK_MULTIPLIER");
    if (env)
    {
      // 
      // The logical is defined, convert it to a number and
      //  test it's validity.
      // 
      char *end = NULL;
      stackMul = strtol(env, &end, 10);
      if (*end)
      {
        // 
        // Not valid, set to the default multiplier
        // 
        stackMul = 2;
      }
    }
    // 
    // Don't come through here again.
    // 
    doneOnce = true;
  }

  // 
  // Get the system default thread stack size
  // 
  if (pthread_attr_getstacksize(&_handle.thatt, &stacksize) == 0)
  {
    // 
    // Replace it with the VMS default thread stack size.
    // 
    int rc = pthread_attr_setstacksize(&_handle.thatt, stacksize * stackMul);
    // 
    // Make sure it succeeded
    // 
    PEGASUS_ASSERT(rc == 0);
  }

  _handle.thid = 0;
}

Thread::~Thread()
{
  try
  {
    join();
    pthread_attr_destroy(&_handle.thatt);

    empty_tsd();
  }
  catch(...)
  {
    // Do not allow the destructor to throw an exception
  }
}

PEGASUS_NAMESPACE_END

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