/usr/include/diagnostics/logging_mutex.hpp is in libdiagnostics-dev 0.3.3-11build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Diagnostics - a unified framework for code annotation, logging,
* program monitoring, and unit-testing.
*
* Copyright (C) 2009 Christian Schallhart <christian@schallhart.net>,
* Michael Tautschnig <tautschnig@forsyte.de>
* 2008 model.in.tum.de group, FORSYTE group
* 2006-2007 model.in.tum.de group
* 2002-2005 Christian Schallhart
*
* 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 2.1 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file diagnostics/frame/logging_mutex.hpp
*
* $Id: logging_mutex.hpp,v 1.9 2005/06/23 09:54:29 esdentem Exp $
*
* @author Christian Schallhart
*
* @brief [LEVEL: beta] the two macros
* @ref DIAGNOSTICS_LOGGING_FACILITY_LOCK_GUARD
* @ref DIAGNOSTICS_LOGGING_FACILITY_LOCK_IS_NESTED
*
* These two macros come in four flavors:
*
* @arg DIAGNOSTICS_INTERNAL_SWITCH_MUTEX == 0 : Null-calls
*
* @arg DIAGNOSTICS_INTERNAL_SWITCH_MUTEX == 3 : Nesting is
* dectectable, but not mutexing happens.
*
* @arg DIAGNOSTICS_INTERNAL_SWITCH_MUTEX == 1 : Nesting is not
* detected, but the calls are mutexed. In particular, nested calls
* will result in a deadlock.
*
* @arg DIAGNOSTICS_INTERNAL_SWITCH_MUTEX == 2 : Nesting is
* dectectable and the calls are mutexed.
*
* @test none
*/
#ifndef DIAGNOSTICS__FRAME__LOGGING_MUTEX_HPP__INCLUDE_GUARD
#define DIAGNOSTICS__FRAME__LOGGING_MUTEX_HPP__INCLUDE_GUARD
#include <diagnostics/frame/platform_config.hpp>
////////////////////////////////////////////////////////////////////////////////
//
// No mutex
//
#if DIAGNOSTICS_INTERNAL_SWITCH_MUTEX == 0
# define DIAGNOSTICS_LOGGING_FACILITY_LOCK_GUARD(NAME) ((void)0)
# define DIAGNOSTICS_LOGGING_FACILITY_LOCK_IS_NESTED(NAME) false
#endif
////////////////////////////////////////////////////////////////////////////////
//
// check for recursion but no mutex
//
#if DIAGNOSTICS_INTERNAL_SWITCH_MUTEX == 3
DIAGNOSTICS_NAMESPACE_BEGIN;
INTERNAL_NAMESPACE_BEGIN;
class Lock_Guard
{
private:
static int m_nesting_count;
public:
inline Lock_Guard() { ++m_nesting_count; }
inline ~Lock_Guard() { --m_nesting_count;}
inline bool nesting() { return m_nesting_count!=1;}
};
INTERNAL_NAMESPACE_END;
DIAGNOSTICS_NAMESPACE_END;
# define DIAGNOSTICS_LOGGING_FACILITY_LOCK_GUARD(NAME) ::DIAGNOSTICS_NAMESPACE::INTERNAL_NAMESPACE::Lock_Guard NAME
# define DIAGNOSTICS_LOGGING_FACILITY_LOCK_IS_NESTED(NAME) (NAME.nesting())
#endif
#if DIAGNOSTICS_INTERNAL_SWITCH_USE_ACE == 1
////////////////////////////////////////////////////////////////////////////////
//
// Use ACE for non-recursive, multithreaded solution
//
# if DIAGNOSTICS_INTERNAL_SWITCH_MUTEX == 1
# include <ace/Synch.h>
DIAGNOSTICS_NAMESPACE_BEGIN;
INTERNAL_NAMESPACE_BEGIN;
class Lock_Guard
{
private:
typedef ACE_Thread_Mutex Mutex_t;
static Mutex_t *m_mutex;
public:
inline Lock_Guard() {
if(m_mutex==NULL) m_mutex=new Mutex_t();
m_mutex->acquire();
}
inline ~Lock_Guard() {
m_mutex->release();
}
};
INTERNAL_NAMESPACE_END;
DIAGNOSTICS_NAMESPACE_END;
# define DIAGNOSTICS_LOGGING_FACILITY_LOCK_GUARD(NAME) ::DIAGNOSTICS_NAMESPACE::INTERNAL_NAMESPACE::Lock_Guard NAME
# define DIAGNOSTICS_LOGGING_FACILITY_LOCK_IS_NESTED(NAME) false
# endif
////////////////////////////////////////////////////////////////////////////////
//
// Use ACE for recursive, multithreaded solution
//
# if DIAGNOSTICS_INTERNAL_SWITCH_MUTEX == 2
# include <ace/Synch.h>
DIAGNOSTICS_NAMESPACE_BEGIN;
INTERNAL_NAMESPACE_BEGIN;
class Lock_Guard
{
private:
typedef ACE_Recursive_Thread_Mutex Mutex_t;
static Mutex_t *m_mutex;
static int m_nesting_count;
public:
inline Lock_Guard() {
if(m_mutex==NULL) {
m_mutex=new Mutex_t();
m_nesting_count=0;
}
m_mutex->acquire();
++m_nesting_count;
}
inline ~Lock_Guard() {
--m_nesting_count;
m_mutex->release();
}
inline bool nesting() {
return m_nesting_count!=1;
}
};
INTERNAL_NAMESPACE_END;
DIAGNOSTICS_NAMESPACE_END;
# define DIAGNOSTICS_LOGGING_FACILITY_LOCK_GUARD(NAME) ::DIAGNOSTICS_NAMESPACE::INTERNAL_NAMESPACE::Lock_Guard NAME
# define DIAGNOSTICS_LOGGING_FACILITY_LOCK_IS_NESTED(NAME) (NAME.nesting())
# endif
#endif
#endif
// vim:ts=4:sw=4
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