/usr/include/boost/thread/lockable_concepts.hpp is in libboost1.54-dev 1.54.0-4ubuntu3.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 | // (C) Copyright 2012 Vicente Botet
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_THREAD_LOCKABLE_CONCEPTS_HPP
#define BOOST_THREAD_LOCKABLE_CONCEPTS_HPP
#include <boost/chrono/chrono.hpp>
#include <boost/concept_check.hpp>
namespace boost
{
/**
* BasicLockable object supports the basic features
* required to delimit a critical region
* Supports the basic lock and unlock functions.
*/
//[BasicLockable
template <typename Mutex>
struct BasicLockable
{
BOOST_CONCEPT_USAGE(BasicLockable)
{
l.lock();
l.unlock();
}
BasicLockable() : l(*static_cast<Mutex*>(0)) {}
private:
BasicLockable operator=(BasicLockable const&);
Mutex& l;
}
;
//]
/**
* Lockable extends BasicLockable
* with try_lock functions.
*/
//[Lockable
template <typename Mutex>
struct Lockable
{
BOOST_CONCEPT_ASSERT(( BasicLockable<Mutex> ));
BOOST_CONCEPT_USAGE(Lockable)
{
if (l.try_lock()) return;
}
Lockable() : l(*static_cast<Mutex*>(0)) {}
private:
Lockable operator=(Lockable const&);
Mutex& l;
};
//]
/**
* TimedLockable object extends Lockable
* with timed lock functions: try_lock_until and try_lock_for and the exception based lock_until and lock_for
*/
//[TimedLockable
template <typename Mutex>
struct TimedLockable
{
BOOST_CONCEPT_ASSERT(( Lockable<Mutex> ));
BOOST_CONCEPT_USAGE(TimedLockable)
{
if (l.try_lock_until(t)) return;
if (l.try_lock_for(d)) return;
}
TimedLockable() : l(*static_cast<Mutex*>(0)) {}
private:
TimedLockable operator=(TimedLockable const&);
Mutex& l;
chrono::system_clock::time_point t;
chrono::system_clock::duration d;
};
//]
/**
* SharedLockable object extends TimedLockable
* with the lock_shared, lock_shared_until, lock_shared_for, try_lock_shared_until, try_lock_shared
* and unlock_shared functions
*/
//[SharedLockable
template <typename Mutex>
struct SharedLockable
{
BOOST_CONCEPT_ASSERT(( TimedLockable<Mutex> ));
BOOST_CONCEPT_USAGE(SharedLockable)
{
l.lock_shared();
l.unlock_shared();
if (l.try_lock_shared()) return;
if (l.try_lock_shared_until(t)) return;
if (l.try_lock_shared_for(d)) return;
}
SharedLockable() : l(*static_cast<Mutex*>(0)) {}
private:
SharedLockable operator=(SharedLockable const&);
Mutex& l;
chrono::system_clock::time_point t;
chrono::system_clock::duration d;
};
//]
/**
* UpgradeLockable object extends SharedLockable
* with the lock_upgrade, lock_upgrade_until, unlock_upgrade_and_lock,
* unlock_and_lock_shared and unlock_upgrade_and_lock_shared functions
*/
//[UpgradeLockable
template <typename Mutex>
struct UpgradeLockable
{
BOOST_CONCEPT_ASSERT(( SharedLockable<Mutex> ));
BOOST_CONCEPT_USAGE(UpgradeLockable)
{
l.lock_upgrade();
l.unlock_upgrade();
if (l.try_lock_upgrade()) return;
if (l.try_lock_upgrade_until(t)) return;
if (l.try_lock_upgrade_for(d)) return;
if (l.try_unlock_shared_and_lock()) return;
if (l.try_unlock_shared_and_lock_until(t)) return;
if (l.try_unlock_shared_and_lock_for(d)) return;
l.unlock_and_lock_shared();
if (l.try_unlock_shared_and_lock_upgrade()) return;
if (l.try_unlock_shared_and_lock_upgrade_until(t)) return;
if (l.try_unlock_shared_and_lock_upgrade_for(d)) return;
l.unlock_and_lock_upgrade();
l.unlock_upgrade_and_lock();
if (l.try_unlock_upgrade_and_lock()) return;
if (l.try_unlock_upgrade_and_lock_until(t)) return;
if (l.try_unlock_upgrade_and_lock_for(d)) return;
l.unlock_upgrade_and_lock_shared();
}
UpgradeLockable() : l(*static_cast<Mutex*>(0)) {}
private:
UpgradeLockable operator=(UpgradeLockable const&);
Mutex& l;
chrono::system_clock::time_point t;
chrono::system_clock::duration d;
};
//]
}
#endif
|