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authorTobias Markmann <tm@ayena.de>2014-10-19 20:22:58 (GMT)
committerTobias Markmann <tm@ayena.de>2014-10-20 13:49:33 (GMT)
commit6b22dfcf59474dd016a0355a3102a1dd3692d92c (patch)
tree2b1fd33be433a91e81fee84fdc2bf1b52575d934 /3rdParty/Boost/src/libs/atomic
parent38b0cb785fea8eae5e48fae56440695fdfd10ee1 (diff)
downloadswift-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/libs/atomic')
-rw-r--r--3rdParty/Boost/src/libs/atomic/src/lockpool.cpp144
1 files changed, 144 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/libs/atomic/src/lockpool.cpp b/3rdParty/Boost/src/libs/atomic/src/lockpool.cpp
new file mode 100644
index 0000000..13269a1
--- /dev/null
+++ b/3rdParty/Boost/src/libs/atomic/src/lockpool.cpp
@@ -0,0 +1,144 @@
+/*
+ * 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)
+ *
+ * Copyright (c) 2011 Helge Bahmann
+ * Copyright (c) 2013-2014 Andrey Semashev
+ */
+/*!
+ * \file lockpool.cpp
+ *
+ * This file contains implementation of the lockpool used to emulate atomic ops.
+ */
+
+#include <cstddef>
+#include <boost/config.hpp>
+#include <boost/assert.hpp>
+#include <boost/memory_order.hpp>
+#include <boost/atomic/capabilities.hpp>
+
+#if BOOST_ATOMIC_FLAG_LOCK_FREE == 2
+#include <boost/atomic/detail/operations_lockfree.hpp>
+#elif !defined(BOOST_HAS_PTHREADS)
+#error Boost.Atomic: Unsupported target platform, POSIX threads are required when native atomic operations are not available
+#else
+#include <pthread.h>
+#define BOOST_ATOMIC_USE_PTHREAD
+#endif
+
+#include <boost/atomic/detail/lockpool.hpp>
+#include <boost/atomic/detail/pause.hpp>
+
+namespace boost {
+namespace atomics {
+namespace detail {
+
+namespace {
+
+// This seems to be the maximum across all modern CPUs
+// 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
+#define BOOST_ATOMIC_CACHE_LINE_SIZE 64
+
+template< unsigned int N >
+struct padding
+{
+ char data[N];
+};
+template< >
+struct padding< 0 >
+{
+};
+
+struct BOOST_ALIGNMENT(BOOST_ATOMIC_CACHE_LINE_SIZE) padded_lock
+{
+#if defined(BOOST_ATOMIC_USE_PTHREAD)
+ typedef pthread_mutex_t lock_type;
+#else
+ typedef atomics::detail::operations< 1u, false > operations;
+ typedef operations::storage_type lock_type;
+#endif
+
+ lock_type lock;
+ // The additional padding is needed to avoid false sharing between locks
+ enum { padding_size = (sizeof(lock_type) <= BOOST_ATOMIC_CACHE_LINE_SIZE ?
+ (BOOST_ATOMIC_CACHE_LINE_SIZE - sizeof(lock_type)) :
+ (BOOST_ATOMIC_CACHE_LINE_SIZE - sizeof(lock_type) % BOOST_ATOMIC_CACHE_LINE_SIZE)) };
+ padding< padding_size > pad;
+};
+
+static padded_lock g_lock_pool[41]
+#if defined(BOOST_ATOMIC_USE_PTHREAD)
+=
+{
+ PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER,
+ PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER,
+ PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER,
+ PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER,
+ PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER,
+ PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER,
+ PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER,
+ PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER,
+ PTHREAD_MUTEX_INITIALIZER
+}
+#endif
+;
+
+} // namespace
+
+
+#if !defined(BOOST_ATOMIC_USE_PTHREAD)
+
+// NOTE: This function must NOT be inline. Otherwise MSVC 9 will sometimes generate broken code for modulus operation which result in crashes.
+BOOST_ATOMIC_DECL lockpool::scoped_lock::scoped_lock(const volatile void* addr) BOOST_NOEXCEPT :
+ m_lock(&g_lock_pool[reinterpret_cast< std::size_t >(addr) % (sizeof(g_lock_pool) / sizeof(*g_lock_pool))].lock)
+{
+ while (padded_lock::operations::test_and_set(*static_cast< padded_lock::lock_type* >(m_lock), memory_order_acquire))
+ {
+ atomics::detail::pause();
+ }
+}
+
+BOOST_ATOMIC_DECL lockpool::scoped_lock::~scoped_lock() BOOST_NOEXCEPT
+{
+ padded_lock::operations::clear(*static_cast< padded_lock::lock_type* >(m_lock), memory_order_release);
+}
+
+BOOST_ATOMIC_DECL void signal_fence() BOOST_NOEXCEPT;
+
+#else // !defined(BOOST_ATOMIC_USE_PTHREAD)
+
+BOOST_ATOMIC_DECL lockpool::scoped_lock::scoped_lock(const volatile void* addr) BOOST_NOEXCEPT :
+ m_lock(&g_lock_pool[reinterpret_cast< std::size_t >(addr) % (sizeof(g_lock_pool) / sizeof(*g_lock_pool))].lock)
+{
+ BOOST_VERIFY(pthread_mutex_lock(static_cast< pthread_mutex_t* >(m_lock)) == 0);
+}
+
+BOOST_ATOMIC_DECL lockpool::scoped_lock::~scoped_lock() BOOST_NOEXCEPT
+{
+ BOOST_VERIFY(pthread_mutex_unlock(static_cast< pthread_mutex_t* >(m_lock)) == 0);
+}
+
+#endif // !defined(BOOST_ATOMIC_USE_PTHREAD)
+
+BOOST_ATOMIC_DECL void lockpool::thread_fence() BOOST_NOEXCEPT
+{
+#if BOOST_ATOMIC_THREAD_FENCE > 0
+ atomics::detail::thread_fence(memory_order_seq_cst);
+#else
+ // Emulate full fence by locking/unlocking a mutex
+ scoped_lock lock(0);
+#endif
+}
+
+BOOST_ATOMIC_DECL void lockpool::signal_fence() BOOST_NOEXCEPT
+{
+ // This function is intentionally non-inline, even if empty. This forces the compiler to treat its call as a compiler barrier.
+#if BOOST_ATOMIC_SIGNAL_FENCE > 0
+ atomics::detail::signal_fence(memory_order_seq_cst);
+#endif
+}
+
+} // namespace detail
+} // namespace atomics
+} // namespace boost