//%LICENSE////////////////////////////////////////////////////////////////
//
// Licensed to The Open Group (TOG) under one or more contributor license
// agreements.  Refer to the OpenPegasusNOTICE.txt file distributed with
// this work for additional information regarding copyright ownership.
// Each contributor licenses this file to you under the OpenPegasus Open
// Source License; you may not use this file except in compliance with the
// License.
//
// 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.
//
//////////////////////////////////////////////////////////////////////////
//
//%/////////////////////////////////////////////////////////////////////////////

#if defined(PEGASUS_OS_VMS)
# include <fcntl.h>
#endif
#include <Pegasus/Common/System.h>
#include <Pegasus/Common/TraceFileHandler.h>
#include <Pegasus/Common/Mutex.h>
#include <Pegasus/Common/StringConversion.h>

PEGASUS_USING_STD;

PEGASUS_NAMESPACE_BEGIN

static Mutex writeMutex;
PEGASUS_FORK_SAFE_MUTEX(writeMutex)

///////////////////////////////////////////////////////////////////////////////
//  Writes message to file. Locks the file before writing to it
//  Implementation of this function is platform specific
///////////////////////////////////////////////////////////////////////////////


void TraceFileHandler::handleMessage(
    const char *message,
    Uint32,
    const char *fmt, va_list argList)
{
    
    if (_configHasChanged)
    {
        _reConfigure();
    }

    if (!_fileHandle)
    {
        // The trace file is not open, which means an earlier fopen() was
        // unsuccessful.  Stop now to avoid logging duplicate error messages.
        return;
    }

    
    // Do not add Trace calls in the Critical section
    // ---- BEGIN CRITICAL SECTION
    AutoMutex writeLock(writeMutex);

    if(!_fileExists(_fileName))
    {
        return;
    }
     
    // Write the message to the file
    fprintf(_fileHandle, "%s", message);
    vfprintf(_fileHandle, fmt, argList);
    fprintf(_fileHandle, "\n");

#if defined(PEGASUS_OS_VMS)
    if (0 == fsync(fileno(_fileHandle)))
#else
    if (0 == fflush(_fileHandle))
#endif
    {
        // trace message successful written, reset error log messages
        // thus allow writing of errors to log again
        _logErrorBitField = 0;
    }

    // ---- END CRITICAL SECTION
}

void TraceFileHandler::handleMessage(const char *message, Uint32)
{
    
    if (_configHasChanged)
    {
         _reConfigure();
    }

    if (!_fileHandle)
    {
        // The trace file is not open, which means an earlier fopen() was
        // unsuccessful.  Stop now to avoid logging duplicate error messages.
        return;
    }

    // Do not add Trace calls in the Critical section
    // ---- BEGIN CRITICAL SECTION
    AutoMutex writeLock(writeMutex);

    if(!_fileExists(_fileName))
    {
        return;
    }

   
       // Write the message to the file
    fprintf(_fileHandle, "%s\n", message);
#if defined(PEGASUS_OS_VMS)
    if (0 == fsync(fileno(_fileHandle)))
#else
    if (0 == fflush(_fileHandle))
#endif
    {
        // trace message successful written, reset error log messages
        // thus allow writing of errors to log again
        _logErrorBitField = 0;
    }
    // ---- END CRITICAL SECTION
}

PEGASUS_NAMESPACE_END