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| author | Tobias Markmann <tm@ayena.de> | 2014-10-19 20:22:58 (GMT) |
|---|---|---|
| committer | Tobias Markmann <tm@ayena.de> | 2014-10-20 13:49:33 (GMT) |
| commit | 6b22dfcf59474dd016a0355a3102a1dd3692d92c (patch) | |
| tree | 2b1fd33be433a91e81fee84fdc2bf1b52575d934 /3rdParty/Boost/src/boost/smart_ptr/detail/spinlock_std_atomic.hpp | |
| parent | 38b0cb785fea8eae5e48fae56440695fdfd10ee1 (diff) | |
| download | swift-6b22dfcf59474dd016a0355a3102a1dd3692d92c.zip swift-6b22dfcf59474dd016a0355a3102a1dd3692d92c.tar.bz2 | |
Update Boost in 3rdParty to version 1.56.0.
This updates Boost in our 3rdParty directory to version 1.56.0.
Updated our update.sh script to stop on error.
Changed error reporting in SwiftTools/CrashReporter.cpp to SWIFT_LOG due to
missing include of <iostream> with newer Boost.
Change-Id: I4b35c77de951333979a524097f35f5f83d325edc
Diffstat (limited to '3rdParty/Boost/src/boost/smart_ptr/detail/spinlock_std_atomic.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/smart_ptr/detail/spinlock_std_atomic.hpp | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/smart_ptr/detail/spinlock_std_atomic.hpp b/3rdParty/Boost/src/boost/smart_ptr/detail/spinlock_std_atomic.hpp new file mode 100644 index 0000000..a61c1cd --- /dev/null +++ b/3rdParty/Boost/src/boost/smart_ptr/detail/spinlock_std_atomic.hpp @@ -0,0 +1,83 @@ +#ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_STD_ATOMIC_HPP_INCLUDED +#define BOOST_SMART_PTR_DETAIL_SPINLOCK_STD_ATOMIC_HPP_INCLUDED + +// MS compatible compilers support #pragma once + +#if defined(_MSC_VER) && (_MSC_VER >= 1020) +# pragma once +#endif + +// +// Copyright (c) 2014 Peter Dimov +// +// 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) +// + +#include <boost/smart_ptr/detail/yield_k.hpp> +#include <atomic> + +namespace boost +{ + +namespace detail +{ + +class spinlock +{ +public: + + std::atomic_flag v_; + +public: + + bool try_lock() + { + return !v_.test_and_set( std::memory_order_acquire ); + } + + void lock() + { + for( unsigned k = 0; !try_lock(); ++k ) + { + boost::detail::yield( k ); + } + } + + void unlock() + { + v_ .clear( std::memory_order_release ); + } + +public: + + class scoped_lock + { + private: + + spinlock & sp_; + + scoped_lock( scoped_lock const & ); + scoped_lock & operator=( scoped_lock const & ); + + public: + + explicit scoped_lock( spinlock & sp ): sp_( sp ) + { + sp.lock(); + } + + ~scoped_lock() + { + sp_.unlock(); + } + }; +}; + +} // namespace detail +} // namespace boost + +#define BOOST_DETAIL_SPINLOCK_INIT { ATOMIC_FLAG_INIT } + +#endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_STD_ATOMIC_HPP_INCLUDED |