/usr/include/quickfix/Mutex.h is in libquickfix-dev 1.13.3+dfsg-4.
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 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | /* -*- C++ -*- */
/****************************************************************************
** Copyright (c) quickfixengine.org All rights reserved.
**
** This file is part of the QuickFIX FIX Engine
**
** This file may be distributed under the terms of the quickfixengine.org
** license as defined by quickfixengine.org and appearing in the file
** LICENSE included in the packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.quickfixengine.org/LICENSE for licensing information.
**
** Contact ask@quickfixengine.org if any conditions of this licensing are
** not clear to you.
**
****************************************************************************/
#ifndef FIX_MUTEX_H
#define FIX_MUTEX_H
#include "Utility.h"
namespace FIX
{
/// Portable implementation of a mutex.
class Mutex
{
public:
Mutex()
{
#ifdef _MSC_VER
InitializeCriticalSection( &m_mutex );
#else
m_count = 0;
m_threadID = 0;
//pthread_mutexattr_t attr;
//pthread_mutexattr_init(&attr);
//pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
//pthread_mutex_init(&m_mutex, &attr);
pthread_mutex_init( &m_mutex, 0 );
#endif
}
~Mutex()
{
#ifdef _MSC_VER
DeleteCriticalSection( &m_mutex );
#else
pthread_mutex_destroy( &m_mutex );
#endif
}
void lock()
{
#ifdef _MSC_VER
EnterCriticalSection( &m_mutex );
#else
if ( m_count && m_threadID == pthread_self() )
{ ++m_count; return ; }
pthread_mutex_lock( &m_mutex );
++m_count;
m_threadID = pthread_self();
#endif
}
void unlock()
{
#ifdef _MSC_VER
LeaveCriticalSection( &m_mutex );
#else
if ( m_count > 1 )
{ m_count--; return ; }
--m_count;
m_threadID = 0;
pthread_mutex_unlock( &m_mutex );
#endif
}
private:
#ifdef _MSC_VER
CRITICAL_SECTION m_mutex;
#else
pthread_mutex_t m_mutex;
pthread_t m_threadID;
int m_count;
#endif
};
/// Locks/Unlocks a mutex using RAII.
class Locker
{
public:
Locker( Mutex& mutex )
: m_mutex( mutex )
{
m_mutex.lock();
}
~Locker()
{
m_mutex.unlock();
}
private:
Mutex& m_mutex;
};
/// Does the opposite of the Locker to ensure mutex ends up in a locked state.
class ReverseLocker
{
public:
ReverseLocker( Mutex& mutex )
: m_mutex( mutex )
{
m_mutex.unlock();
}
~ReverseLocker()
{
m_mutex.lock();
}
private:
Mutex& m_mutex;
};
}
#endif
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