/usr/include/ETL/_mutex_null.h is in etl-dev 0.04.19-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | /*! ========================================================================
** Extended Template and Library
** NULL Mutex Abstraction Class Implementation
** $Id$
**
** Copyright (c) 2002 Robert B. Quattlebaum Jr.
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
** published by the Free Software Foundation; either version 2 of
** the License, or (at your option) any later version.
**
** This package 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
** General Public License for more details.
**
** === N O T E S ===========================================================
**
** This is an internal header file, included by other ETL headers.
** You should not attempt to use it directly.
**
** ========================================================================= */
/* === S T A R T =========================================================== */
#ifndef __ETL__MUTEX_NULL_H_
#define __ETL__MUTEX_NULL_H_
/* === H E A D E R S ======================================================= */
/* === M A C R O S ========================================================= */
/* === C L A S S E S & S T R U C T S ======================================= */
_ETL_BEGIN_NAMESPACE
class mutex_null
{
public:
mutex_null(){}
~mutex_null(){}
//! Exception-safe mutex lock class
/*
class lock
{
mutex *_mtx;
public:
lock(mutex &x):_mtx(&x) { _mtx->lock_mutex(); }
~lock() { _mtx->unlock_mutex(); }
mutex &get() { return *_mtx; }
};
*/
class lock
{
public:
lock(mutex_null &/*x*/) { }
};
void lock_mutex(){}
bool try_lock_mutex(){return true;}
void unlock_mutex(){}
};
_ETL_END_NAMESPACE
/* === E X T E R N S ======================================================= */
/* === E N D =============================================================== */
#endif
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