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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: Sushma Fernandes, Hewlett-Packard Company (sushma_fernandes@hp.com)
//
// Modified By:
//
//%/////////////////////////////////////////////////////////////////////////////

#include <fcntl.h>
#include <Pegasus/Common/Logger.h>
#include <Pegasus/Common/System.h>
#include <Pegasus/Common/TraceFileHandler.h>

PEGASUS_USING_STD;

PEGASUS_NAMESPACE_BEGIN

/////////////////////////////////////////////////////////////////////////////// 
//  Writes message to file. Locks the file before writing to it
//  Implementation of this function is platform specific
///////////////////////////////////////////////////////////////////////////////
void TraceFileHandler::handleMessage (
				       const char *message,
				       const char *fmt,
				       va_list argList)
{
  Sint32 retCode;
  Sint32 fileDesc;

  // Do not add Trace calls in the Critical section
  // ---- BEGIN CRITICAL SECTION

  // Check if the file has been deleted, if so re-open the file and continue
  if (!System::exists (_fileName))
  {
    if (_fileHandle == 0)
    {
      _fileHandle = fopen (_fileName, "a+", "shr=get,put,upd");
//          _fileHandle = fopen(_fileName,"a","shr=get");
    }
    else
    {
      _fileHandle = freopen (_fileName, "a+", _fileHandle, "shr=get,put,upd");
//          _fileHandle = freopen(_fileName,"a",_fileHandle,"shr=get");
    }
    if (!_fileHandle)
    {
      // Unable to re-open file, log a message

      Logger:: put_l (Logger:: DEBUG_LOG, System:: CIMSERVER, Logger::WARNING,
	     "Common.TraceFileHandlerVms.FAILED_TO_OPEN_FILE",
	     "Failed to open File $0", _fileName);
      return;
    }

    //
    // Set permissions on the trace file to 0400
    //

    if (!FileSystem::changeFilePermissions (String (_fileName), (S_IRUSR | S_IWUSR)))
    {
      Logger:: put_l (Logger:: DEBUG_LOG, "Tracer", Logger::WARNING,
	     "Common.TraceFileHandlerVms.FAILED_TO_SET_FILE_PERMISSIONS",
	     "Failed to set permissions on file $0", _fileName);
      return;
    }
  }
  // Seek to the end of File

  retCode = fseek (_fileHandle, 0, SEEK_END);

  // Write the message to the file

  retCode = fprintf (_fileHandle, "%s", message);
  retCode = vfprintf (_fileHandle, fmt, argList);
  retCode = fprintf (_fileHandle, "\n");
  retCode = fflush (_fileHandle);
  fileDesc = fileno (_fileHandle);
  retCode = fsync (fileDesc);
  _wroteToLog = false;
//        retCode = fclose(_fileHandle);
  //        _fileHandle = 0;

  // ---- END CRITICAL SECTION

  return;
}

PEGASUS_NAMESPACE_END