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/*********************************************************************
*
* Written by Nick Gorham
* (nick@lurcher.org).
*
* copyright (c) 1999 Nick Gorham
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
**********************************************************************
*
* $Id: _logging.c,v 1.5 2009/02/18 17:59:27 lurcher Exp $
*
* $Log: _logging.c,v $
* Revision 1.5 2009/02/18 17:59:27 lurcher
* Shift to using config.h, the compile lines were making it hard to spot warnings
*
* Revision 1.4 2008/05/12 13:07:21 lurcher
* Push a couple of small changes back into CVS, ready for new release
*
* Revision 1.3 2008/02/15 15:47:12 lurcher
* Add thread protection around ini caching
*
* Revision 1.2 2007/11/27 17:52:57 peteralexharvey
* - changes made during QT4 implementation
*
* Revision 1.1.1.1 2001/10/17 16:40:30 lurcher
*
* First upload to SourceForge
*
* Revision 1.1.1.1 2000/09/04 16:42:53 nick
* Imported Sources
*
* Revision 1.1 1999/07/15 06:23:39 ngorham
*
* Added functions to remove the need for _init and _fini
*
*
*********************************************************************/
#include <config.h>
#include <odbcinstext.h>
#include <log.h>
#ifdef HAVE_LIBPTH
#include <pth.h>
static pth_mutex_t mutex_log = PTH_MUTEX_INIT;
static int pth_init_called = 0;
static int mutex_entry( void )
{
if ( !pth_init_called )
{
pth_init();
pth_init_called = 1;
}
return pth_mutex_acquire( &mutex_log, 0, NULL );
}
static int mutex_exit( void )
{
return pth_mutex_release( &mutex_log );
}
#elif HAVE_LIBPTHREAD
#include <pthread.h>
static pthread_mutex_t mutex_log = PTHREAD_MUTEX_INITIALIZER;
static int mutex_entry( void )
{
return pthread_mutex_lock( &mutex_log );
}
static int mutex_exit( void )
{
return pthread_mutex_unlock( &mutex_log );
}
#elif HAVE_LIBTHREAD
#include <thread.h>
static mutex_t mutex_log;
static int mutex_entry( void )
{
return mutex_lock( &mutex_log );
}
static int mutex_exit( void )
{
return mutex_unlock( &mutex_log );
}
#else
#define mutex_entry()
#define mutex_exit()
#endif
/*
* I don't like these statics but not sure what else we can do...
*
* Indeed, access to these statics was in fact not thread safe !
* So they are now protected by mutex_log...
*/
static HLOG hODBCINSTLog = NULL;
static int log_tried = 0;
int inst_logPushMsg( char *pszModule, char *pszFunctionName, int nLine, int nSeverity, int nCode, char *pszMessage )
{
int ret = LOG_ERROR;
mutex_entry();
if ( !log_tried )
{
long nMaxMessages = 10; /* \todo ODBC spec says 8 max. We would make it 0 (unlimited) but at the moment logPeekMsg
would be slow if many messages. Revisit when opt is made to log storage. */
log_tried = 1;
if ( logOpen( &hODBCINSTLog, "odbcinst", NULL, nMaxMessages ) != LOG_SUCCESS )
{
hODBCINSTLog = NULL;
}
else
{
logOn( hODBCINSTLog, 1 );
}
}
if ( hODBCINSTLog )
{
ret = logPushMsg( hODBCINSTLog,
pszModule,
pszFunctionName,
nLine,
nSeverity,
nCode,
pszMessage );
}
mutex_exit();
return ret;
}
/*!
* \brief Get a reference to a message in the log.
*
* The caller (SQLInstallerError) could call logPeekMsg directly
* but we would have to extern hODBCINSTLog and I have not given
* any thought to that at this time.
*
* \param nMsg
* \param phMsg
*
* \return int
*/
int inst_logPeekMsg( long nMsg, HLOGMSG *phMsg )
{
int ret = LOG_NO_DATA;
mutex_entry();
if ( hODBCINSTLog )
ret = logPeekMsg( hODBCINSTLog, nMsg, phMsg );
mutex_exit();
return ret;
}
int inst_logClear( void )
{
int ret = LOG_ERROR;
mutex_entry();
if ( hODBCINSTLog )
ret = logClear( hODBCINSTLog );
mutex_exit();
return ret;
}
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