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externals: Update boost to 1.72 and add Boost Context
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Fernando Sahmkow
parent
5e8300b76a
commit
77abe07b3b
618 changed files with 96299 additions and 14263 deletions
38
libs/atomic/build/Jamfile.v2
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38
libs/atomic/build/Jamfile.v2
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# Boost.Atomic Library Jamfile
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#
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# Copyright Helge Bahmann 2011.
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# Copyright Andrey Semashev 2018.
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#
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# Distributed under the Boost Software License, Version 1.0.
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# (See accompanying file LICENSE_1_0.txt or copy at
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# http://www.boost.org/LICENSE_1_0.txt)
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import common ;
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project boost/atomic
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: requirements
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<threading>multi
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<link>shared:<define>BOOST_ATOMIC_DYN_LINK=1
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<link>static:<define>BOOST_ATOMIC_STATIC_LINK=1
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<define>BOOST_ATOMIC_SOURCE
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<target-os>windows:<define>BOOST_USE_WINDOWS_H
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<target-os>windows:<define>_WIN32_WINNT=0x0500
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<toolset>gcc,<target-os>windows:<linkflags>"-lkernel32"
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: usage-requirements
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<link>shared:<define>BOOST_ATOMIC_DYN_LINK=1
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<link>static:<define>BOOST_ATOMIC_STATIC_LINK=1
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: source-location ../src
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;
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alias atomic_sources
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: lockpool.cpp
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;
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explicit atomic_sources ;
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lib boost_atomic
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: atomic_sources
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;
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boost-install boost_atomic ;
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167
libs/atomic/src/lockpool.cpp
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167
libs/atomic/src/lockpool.cpp
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/*
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*
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* Copyright (c) 2011 Helge Bahmann
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* Copyright (c) 2013-2014 Andrey Semashev
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*/
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/*!
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* \file lockpool.cpp
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*
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* This file contains implementation of the lockpool used to emulate atomic ops.
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*/
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#include <cstddef>
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#include <boost/config.hpp>
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#include <boost/assert.hpp>
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#include <boost/memory_order.hpp>
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#include <boost/atomic/capabilities.hpp>
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#if BOOST_ATOMIC_FLAG_LOCK_FREE == 2
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#include <boost/atomic/detail/operations_lockfree.hpp>
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#elif !defined(BOOST_HAS_PTHREADS)
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#error Boost.Atomic: Unsupported target platform, POSIX threads are required when native atomic operations are not available
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#else
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#include <pthread.h>
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#define BOOST_ATOMIC_USE_PTHREAD
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#endif
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#include <boost/atomic/detail/lockpool.hpp>
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#include <boost/atomic/detail/pause.hpp>
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#if defined(BOOST_MSVC)
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#pragma warning(push)
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// 'struct_name' : structure was padded due to __declspec(align())
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#pragma warning(disable: 4324)
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#endif
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namespace boost {
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namespace atomics {
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namespace detail {
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namespace {
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// Cache line size, in bytes
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// NOTE: This constant is made as a macro because some compilers (gcc 4.4 for one) don't allow enums or namespace scope constants in alignment attributes
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#if defined(__s390__) || defined(__s390x__)
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#define BOOST_ATOMIC_CACHE_LINE_SIZE 256
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#elif defined(powerpc) || defined(__powerpc__) || defined(__ppc__)
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#define BOOST_ATOMIC_CACHE_LINE_SIZE 128
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#else
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#define BOOST_ATOMIC_CACHE_LINE_SIZE 64
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#endif
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#if defined(BOOST_ATOMIC_USE_PTHREAD)
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typedef pthread_mutex_t lock_type;
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#else
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typedef atomics::detail::operations< 1u, false > lock_operations;
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typedef lock_operations::storage_type lock_type;
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#endif
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enum
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{
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padding_size = (sizeof(lock_type) <= BOOST_ATOMIC_CACHE_LINE_SIZE ?
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(BOOST_ATOMIC_CACHE_LINE_SIZE - sizeof(lock_type)) :
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(BOOST_ATOMIC_CACHE_LINE_SIZE - sizeof(lock_type) % BOOST_ATOMIC_CACHE_LINE_SIZE))
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};
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template< unsigned int PaddingSize >
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struct BOOST_ALIGNMENT(BOOST_ATOMIC_CACHE_LINE_SIZE) padded_lock
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{
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lock_type lock;
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// The additional padding is needed to avoid false sharing between locks
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char padding[PaddingSize];
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};
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template< >
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struct BOOST_ALIGNMENT(BOOST_ATOMIC_CACHE_LINE_SIZE) padded_lock< 0u >
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{
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lock_type lock;
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};
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typedef padded_lock< padding_size > padded_lock_t;
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static padded_lock_t g_lock_pool[41]
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#if defined(BOOST_ATOMIC_USE_PTHREAD)
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=
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{
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{ PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER },
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{ PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER },
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{ PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER },
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{ PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER },
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{ PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER },
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{ PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER },
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{ PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER },
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{ PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER }, { PTHREAD_MUTEX_INITIALIZER },
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{ PTHREAD_MUTEX_INITIALIZER }
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}
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#endif
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;
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} // namespace
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#if !defined(BOOST_ATOMIC_USE_PTHREAD)
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// NOTE: This function must NOT be inline. Otherwise MSVC 9 will sometimes generate broken code for modulus operation which result in crashes.
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BOOST_ATOMIC_DECL lockpool::scoped_lock::scoped_lock(const volatile void* addr) BOOST_NOEXCEPT :
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m_lock(&g_lock_pool[reinterpret_cast< std::size_t >(addr) % (sizeof(g_lock_pool) / sizeof(*g_lock_pool))].lock)
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{
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while (lock_operations::test_and_set(*static_cast< lock_type* >(m_lock), memory_order_acquire))
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{
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do
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{
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atomics::detail::pause();
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}
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while (!!lock_operations::load(*static_cast< lock_type* >(m_lock), memory_order_relaxed));
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}
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}
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BOOST_ATOMIC_DECL lockpool::scoped_lock::~scoped_lock() BOOST_NOEXCEPT
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{
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lock_operations::clear(*static_cast< lock_type* >(m_lock), memory_order_release);
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}
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BOOST_ATOMIC_DECL void signal_fence() BOOST_NOEXCEPT;
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#else // !defined(BOOST_ATOMIC_USE_PTHREAD)
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BOOST_ATOMIC_DECL lockpool::scoped_lock::scoped_lock(const volatile void* addr) BOOST_NOEXCEPT :
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m_lock(&g_lock_pool[reinterpret_cast< std::size_t >(addr) % (sizeof(g_lock_pool) / sizeof(*g_lock_pool))].lock)
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{
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BOOST_VERIFY(pthread_mutex_lock(static_cast< pthread_mutex_t* >(m_lock)) == 0);
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}
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BOOST_ATOMIC_DECL lockpool::scoped_lock::~scoped_lock() BOOST_NOEXCEPT
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{
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BOOST_VERIFY(pthread_mutex_unlock(static_cast< pthread_mutex_t* >(m_lock)) == 0);
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}
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#endif // !defined(BOOST_ATOMIC_USE_PTHREAD)
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BOOST_ATOMIC_DECL void lockpool::thread_fence() BOOST_NOEXCEPT
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{
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#if BOOST_ATOMIC_THREAD_FENCE > 0
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atomics::detail::thread_fence(memory_order_seq_cst);
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#else
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// Emulate full fence by locking/unlocking a mutex
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scoped_lock lock(0);
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#endif
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}
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BOOST_ATOMIC_DECL void lockpool::signal_fence() BOOST_NOEXCEPT
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{
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// This function is intentionally non-inline, even if empty. This forces the compiler to treat its call as a compiler barrier.
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#if BOOST_ATOMIC_SIGNAL_FENCE > 0
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atomics::detail::signal_fence(memory_order_seq_cst);
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#endif
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}
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} // namespace detail
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} // namespace atomics
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} // namespace boost
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#if defined(BOOST_MSVC)
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#pragma warning(pop)
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#endif
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