FM / detail

/usr/include/boost/log/detail

Name	Size	Mode	Actions
adaptive_mutex.hpp	6332	0644	edit dl rm
allocator_traits.hpp	2503	0644	edit dl rm
asio_fwd.hpp	1103	0644	edit dl rm
attachable_sstream_buf.hpp	11312	0644	edit dl rm
attribute_get_value_impl.hpp	1166	0644	edit dl rm
attribute_predicate.hpp	3291	0644	edit dl rm
attr_output_impl.hpp	3862	0644	edit dl rm
attr_output_terminal.hpp	5077	0644	edit dl rm
cleanup_scope_guard.hpp	1351	0644	edit dl rm
code_conversion.hpp	10896	0644	edit dl rm
config.hpp	15250	0644	edit dl rm
copy_cv.hpp	1403	0644	edit dl rm
custom_terminal_spec.hpp	2020	0644	edit dl rm
c_str.hpp	1438	0644	edit dl rm
date_time_fmt_gen_traits_fwd.hpp	1113	0644	edit dl rm
date_time_format_parser.hpp	18737	0644	edit dl rm
decomposed_time.hpp	13499	0644	edit dl rm
deduce_char_type.hpp	2097	0644	edit dl rm
default_attribute_names.hpp	1428	0644	edit dl rm
embedded_string_type.hpp	3002	0644	edit dl rm
enqueued_record.hpp	2908	0644	edit dl rm
event.hpp	4292	0644	edit dl rm
fake_mutex.hpp	1516	0644	edit dl rm
footer.hpp	596	0644	edit dl rm
format.hpp	10809	0644	edit dl rm
function_traits.hpp	7126	0644	edit dl rm
generate_overloads.hpp	892	0644	edit dl rm
header.hpp	2493	0644	edit dl rm
id.hpp	2069	0644	edit dl rm
is_character_type.hpp	1550	0644	edit dl rm
is_ostream.hpp	1565	0644	edit dl rm
light_function.hpp	14681	0644	edit dl rm
light_function_pp.hpp	12258	0644	edit dl rm
light_rw_mutex.hpp	3854	0644	edit dl rm
locking_ptr.hpp	3885	0644	edit dl rm
locks.hpp	5260	0644	edit dl rm
named_scope_fmt_pp.hpp	3865	0644	edit dl rm
native_typeof.hpp	1471	0644	edit dl rm
parameter_tools.hpp	6045	0644	edit dl rm
pause.hpp	1528	0644	edit dl rm
pp_identity.hpp	768	0644	edit dl rm
process_id.hpp	1472	0644	edit dl rm
setup_config.hpp	1789	0644	edit dl rm
sfinae_tools.hpp	1120	0644	edit dl rm
singleton.hpp	2242	0644	edit dl rm
sink_init_helpers.hpp	5085	0644	edit dl rm
snprintf.hpp	2716	0644	edit dl rm
tagged_integer.hpp	4492	0644	edit dl rm
threadsafe_queue.hpp	8550	0644	edit dl rm
thread_id.hpp	1566	0644	edit dl rm
thread_specific.hpp	2895	0644	edit dl rm
timestamp.hpp	2327	0644	edit dl rm
trivial_keyword.hpp	1083	0644	edit dl rm
unary_function_terminal.hpp	4355	0644	edit dl rm
value_ref_visitation.hpp	3646	0644	edit dl rm

Edit: /usr/include/boost/log/detail/adaptive_mutex.hpp (6332B)

/*
 *          Copyright Andrey Semashev 2007 - 2015.
 * 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)
 */
/*!
 * \file   adaptive_mutex.hpp
 * \author Andrey Semashev
 * \date   01.08.2010
 *
 * \brief  This header is the Boost.Log library implementation, see the library documentation
 *         at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
 */

#ifndef BOOST_LOG_DETAIL_ADAPTIVE_MUTEX_HPP_INCLUDED_
#define BOOST_LOG_DETAIL_ADAPTIVE_MUTEX_HPP_INCLUDED_

#include <boost/log/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#ifndef BOOST_LOG_NO_THREADS

#include <boost/throw_exception.hpp>
#include <boost/thread/exceptions.hpp>
#include <boost/assert/source_location.hpp>

#if defined(BOOST_THREAD_POSIX) // This one can be defined by users, so it should go first
#define BOOST_LOG_ADAPTIVE_MUTEX_USE_PTHREAD
#elif defined(BOOST_WINDOWS)
#define BOOST_LOG_ADAPTIVE_MUTEX_USE_WINAPI
#elif defined(BOOST_HAS_PTHREADS)
#define BOOST_LOG_ADAPTIVE_MUTEX_USE_PTHREAD
#endif

#if defined(BOOST_LOG_ADAPTIVE_MUTEX_USE_WINAPI)

#include <boost/log/detail/pause.hpp>
#include <boost/winapi/thread.hpp>
#include <boost/detail/interlocked.hpp>

#if defined(__INTEL_COMPILER) || defined(_MSC_VER)
#    if defined(__INTEL_COMPILER)
#        define BOOST_LOG_COMPILER_BARRIER __memory_barrier()
#    elif defined(__clang__) // clang-win also defines _MSC_VER
#        define BOOST_LOG_COMPILER_BARRIER __atomic_signal_fence(__ATOMIC_SEQ_CST)
#    else
extern "C" void _ReadWriteBarrier(void);
#        if defined(BOOST_MSVC)
#            pragma intrinsic(_ReadWriteBarrier)
#        endif
#        define BOOST_LOG_COMPILER_BARRIER _ReadWriteBarrier()
#    endif
#elif defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
#    define BOOST_LOG_COMPILER_BARRIER __asm__ __volatile__("" : : : "memory")
#endif

#include <boost/log/detail/header.hpp>

namespace boost {

BOOST_LOG_OPEN_NAMESPACE

namespace aux {

//! A mutex that performs spinning or thread yielding in case of contention
class adaptive_mutex
{
private:
    enum state
    {
        initial_pause = 2,
        max_pause = 16
    };

long m_State;

public:
    adaptive_mutex() : m_State(0) {}

bool try_lock()
    {
        return (BOOST_INTERLOCKED_COMPARE_EXCHANGE(&m_State, 1L, 0L) == 0L);
    }

void lock()
    {
#if defined(BOOST_LOG_AUX_PAUSE)
        unsigned int pause_count = initial_pause;
#endif
        while (!try_lock())
        {
#if defined(BOOST_LOG_AUX_PAUSE)
            if (pause_count < max_pause)
            {
                for (unsigned int i = 0; i < pause_count; ++i)
                {
                    BOOST_LOG_AUX_PAUSE;
                }
                pause_count += pause_count;
            }
            else
            {
                // Restart spinning after waking up this thread
                pause_count = initial_pause;
                boost::winapi::SwitchToThread();
            }
#else
            boost::winapi::SwitchToThread();
#endif
        }
    }

void unlock()
    {
#if (defined(_M_IX86) || defined(_M_AMD64)) && defined(BOOST_LOG_COMPILER_BARRIER)
        BOOST_LOG_COMPILER_BARRIER;
        m_State = 0L;
        BOOST_LOG_COMPILER_BARRIER;
#else
        BOOST_INTERLOCKED_EXCHANGE(&m_State, 0L);
#endif
    }

//  Non-copyable
    BOOST_DELETED_FUNCTION(adaptive_mutex(adaptive_mutex const&))
    BOOST_DELETED_FUNCTION(adaptive_mutex& operator= (adaptive_mutex const&))
};

#undef BOOST_LOG_AUX_PAUSE
#undef BOOST_LOG_COMPILER_BARRIER

} // namespace aux

BOOST_LOG_CLOSE_NAMESPACE // namespace log

} // namespace boost

#include <boost/log/detail/footer.hpp>

#elif defined(BOOST_LOG_ADAPTIVE_MUTEX_USE_PTHREAD)

#include <pthread.h>
#include <boost/assert.hpp>
#include <boost/log/detail/header.hpp>

#if defined(PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
#define BOOST_LOG_ADAPTIVE_MUTEX_USE_PTHREAD_MUTEX_ADAPTIVE_NP
#endif

namespace boost {

BOOST_LOG_OPEN_NAMESPACE

namespace aux {

//! A mutex that performs spinning or thread yielding in case of contention
class adaptive_mutex
{
private:
    pthread_mutex_t m_State;

public:
    adaptive_mutex()
    {
#if defined(BOOST_LOG_ADAPTIVE_MUTEX_USE_PTHREAD_MUTEX_ADAPTIVE_NP)
        pthread_mutexattr_t attrs;
        pthread_mutexattr_init(&attrs);
        pthread_mutexattr_settype(&attrs, PTHREAD_MUTEX_ADAPTIVE_NP);

const int err = pthread_mutex_init(&m_State, &attrs);
        pthread_mutexattr_destroy(&attrs);
#else
        const int err = pthread_mutex_init(&m_State, NULL);
#endif
        if (BOOST_UNLIKELY(err != 0))
            throw_exception< thread_resource_error >(err, "Failed to initialize an adaptive mutex", "adaptive_mutex::adaptive_mutex()", __FILE__, __LINE__);
    }

~adaptive_mutex()
    {
        BOOST_VERIFY(pthread_mutex_destroy(&m_State) == 0);
    }

bool try_lock()
    {
        const int err = pthread_mutex_trylock(&m_State);
        if (err == 0)
            return true;
        if (BOOST_UNLIKELY(err != EBUSY))
            throw_exception< lock_error >(err, "Failed to lock an adaptive mutex", "adaptive_mutex::try_lock()", __FILE__, __LINE__);
        return false;
    }

void lock()
    {
        const int err = pthread_mutex_lock(&m_State);
        if (BOOST_UNLIKELY(err != 0))
            throw_exception< lock_error >(err, "Failed to lock an adaptive mutex", "adaptive_mutex::lock()", __FILE__, __LINE__);
    }

void unlock()
    {
        BOOST_VERIFY(pthread_mutex_unlock(&m_State) == 0);
    }

//  Non-copyable
    BOOST_DELETED_FUNCTION(adaptive_mutex(adaptive_mutex const&))
    BOOST_DELETED_FUNCTION(adaptive_mutex& operator= (adaptive_mutex const&))

private:
    template< typename ExceptionT >
    static BOOST_NOINLINE BOOST_LOG_NORETURN void throw_exception(int err, const char* descr, const char* func, const char* file, int line)
    {
        boost::throw_exception(ExceptionT(err, descr), boost::source_location(file, line, func));
    }
};

} // namespace aux

BOOST_LOG_CLOSE_NAMESPACE // namespace log

} // namespace boost

#include <boost/log/detail/footer.hpp>

#endif

#endif // BOOST_LOG_NO_THREADS

#endif // BOOST_LOG_DETAIL_ADAPTIVE_MUTEX_HPP_INCLUDED_

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