Major Refactoring v2.0

3 files changed, 260 insertions, 0 deletions

diff --git a/contrib/src/boost/uuid/detail/config.hpp b/contrib/src/boost/uuid/detail/config.hpp
new file mode 100644
index 0000000..602d4ab
--- /dev/null
+++ b/contrib/src/boost/uuid/detail/config.hpp
@@ -0,0 +1,74 @@
+/*
+ *            Copyright Andrey Semashev 2013.
+ * 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   uuid/detail/config.hpp
+ *
+ * \brief  This header defines configuration macros for Boost.UUID.
+ */
+
+#ifndef BOOST_UUID_DETAIL_CONFIG_HPP_INCLUDED_
+#define BOOST_UUID_DETAIL_CONFIG_HPP_INCLUDED_
+
+#include <boost/config.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+#if !defined(BOOST_UUID_NO_SIMD)
+
+#if defined(__GNUC__) && defined(__SSE2__)
+
+// GCC and its pretenders go here
+#ifndef BOOST_UUID_USE_SSE2
+#define BOOST_UUID_USE_SSE2
+#endif
+
+#if defined(__SSE3__) && !defined(BOOST_UUID_USE_SSE3)
+#define BOOST_UUID_USE_SSE3
+#endif
+
+#if defined(__SSE4_1__) && !defined(BOOST_UUID_USE_SSE41)
+#define BOOST_UUID_USE_SSE41
+#endif
+
+#elif defined(_MSC_VER)
+
+#if (defined(_M_X64) || (defined(_M_IX86) && defined(_M_IX86_FP) && _M_IX86_FP >= 2)) && !defined(BOOST_UUID_USE_SSE2)
+#define BOOST_UUID_USE_SSE2
+#endif
+
+#if defined(__AVX__)
+#if !defined(BOOST_UUID_USE_SSE41)
+#define BOOST_UUID_USE_SSE41
+#endif
+#if !defined(BOOST_UUID_USE_SSE3)
+#define BOOST_UUID_USE_SSE3
+#endif
+#if !defined(BOOST_UUID_USE_SSE2)
+#define BOOST_UUID_USE_SSE2
+#endif
+#endif
+
+#endif
+
+// More advanced ISA extensions imply less advanced are also available
+#if !defined(BOOST_UUID_USE_SSE3) && defined(BOOST_UUID_USE_SSE41)
+#define BOOST_UUID_USE_SSE3
+#endif
+
+#if !defined(BOOST_UUID_USE_SSE2) && defined(BOOST_UUID_USE_SSE3)
+#define BOOST_UUID_USE_SSE2
+#endif
+
+#if !defined(BOOST_UUID_NO_SIMD) && !defined(BOOST_UUID_USE_SSE41) && !defined(BOOST_UUID_USE_SSE3) && !defined(BOOST_UUID_USE_SSE2)
+#define BOOST_UUID_NO_SIMD
+#endif
+
+#endif // !defined(BOOST_UUID_NO_SIMD)
+
+#endif // BOOST_UUID_DETAIL_CONFIG_HPP_INCLUDED_
diff --git a/contrib/src/boost/uuid/detail/uuid_generic.hpp b/contrib/src/boost/uuid/detail/uuid_generic.hpp
new file mode 100644
index 0000000..1c4d775
--- /dev/null
+++ b/contrib/src/boost/uuid/detail/uuid_generic.hpp
@@ -0,0 +1,51 @@
+/*
+ *             Copyright Andy Tompkins 2006.
+ * 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   uuid/detail/uuid_generic.hpp
+ *
+ * \brief  This header contains generic implementation of \c boost::uuid operations.
+ */
+
+#ifndef BOOST_UUID_DETAIL_UUID_GENERIC_HPP_INCLUDED_
+#define BOOST_UUID_DETAIL_UUID_GENERIC_HPP_INCLUDED_
+
+#include <string.h>
+
+namespace boost {
+namespace uuids {
+
+inline bool uuid::is_nil() const BOOST_NOEXCEPT
+{
+    for (std::size_t i = 0; i < sizeof(data); ++i)
+    {
+        if (data[i] != 0U)
+            return false;
+    }
+    return true;
+}
+
+inline void uuid::swap(uuid& rhs) BOOST_NOEXCEPT
+{
+    uuid tmp = *this;
+    *this = rhs;
+    rhs = tmp;
+}
+
+inline bool operator== (uuid const& lhs, uuid const& rhs) BOOST_NOEXCEPT
+{
+    return memcmp(lhs.data, rhs.data, sizeof(lhs.data)) == 0;
+}
+
+inline bool operator< (uuid const& lhs, uuid const& rhs) BOOST_NOEXCEPT
+{
+    return memcmp(lhs.data, rhs.data, sizeof(lhs.data)) < 0;
+}
+
+} // namespace uuids
+} // namespace boost
+
+#endif // BOOST_UUID_DETAIL_UUID_GENERIC_HPP_INCLUDED_
diff --git a/contrib/src/boost/uuid/detail/uuid_x86.hpp b/contrib/src/boost/uuid/detail/uuid_x86.hpp
new file mode 100644
index 0000000..5c73670
--- /dev/null
+++ b/contrib/src/boost/uuid/detail/uuid_x86.hpp
@@ -0,0 +1,135 @@
+/*
+ *            Copyright Andrey Semashev 2013.
+ * 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   uuid/detail/uuid_x86.hpp
+ *
+ * \brief  This header contains optimized SSE implementation of \c boost::uuid operations.
+ */
+
+#ifndef BOOST_UUID_DETAIL_UUID_X86_HPP_INCLUDED_
+#define BOOST_UUID_DETAIL_UUID_X86_HPP_INCLUDED_
+
+// MSVC does not always have immintrin.h (at least, not up to MSVC 10), so include the appropriate header for each instruction set
+#if defined(BOOST_UUID_USE_SSE41)
+#include <smmintrin.h>
+#elif defined(BOOST_UUID_USE_SSE3)
+#include <pmmintrin.h>
+#else
+#include <emmintrin.h>
+#endif
+
+#if defined(BOOST_MSVC) && defined(_M_X64) && !defined(BOOST_UUID_USE_SSE3) && (BOOST_MSVC < 1900 /* Fixed in Visual Studio 2015 */ )
+// At least MSVC 9 (VS2008) and 12 (VS2013) have an optimizer bug that sometimes results in incorrect SIMD code
+// generated in Release x64 mode. In particular, it affects operator==, where the compiler sometimes generates
+// pcmpeqd with a memory opereand instead of movdqu followed by pcmpeqd. The problem is that uuid can be
+// not aligned to 16 bytes and pcmpeqd causes alignment violation in this case. We cannot be sure that other
+// MSVC versions are not affected so we apply the workaround for all versions, except VS2015 on up where
+// the bug has been fixed.
+//
+// https://svn.boost.org/trac/boost/ticket/8509#comment:3
+// https://connect.microsoft.com/VisualStudio/feedbackdetail/view/981648#tabs
+#define BOOST_UUID_DETAIL_MSVC_BUG981648
+#if BOOST_MSVC >= 1600
+extern "C" void _ReadWriteBarrier(void);
+#pragma intrinsic(_ReadWriteBarrier)
+#endif
+#endif
+
+namespace boost {
+namespace uuids {
+namespace detail {
+
+BOOST_FORCEINLINE __m128i load_unaligned_si128(const uint8_t* p) BOOST_NOEXCEPT
+{
+#if defined(BOOST_UUID_USE_SSE3)
+    return _mm_lddqu_si128(reinterpret_cast< const __m128i* >(p));
+#elif !defined(BOOST_UUID_DETAIL_MSVC_BUG981648)
+    return _mm_loadu_si128(reinterpret_cast< const __m128i* >(p));
+#elif BOOST_MSVC >= 1600
+    __m128i mm = _mm_loadu_si128(reinterpret_cast< const __m128i* >(p));
+    // Make sure this load doesn't get merged with the subsequent instructions
+    _ReadWriteBarrier();
+    return mm;
+#else
+    // VS2008 x64 doesn't respect _ReadWriteBarrier above, so we have to generate this crippled code to load unaligned data
+    return _mm_unpacklo_epi64(_mm_loadl_epi64(reinterpret_cast< const __m128i* >(p)), _mm_loadl_epi64(reinterpret_cast< const __m128i* >(p + 8)));
+#endif
+}
+
+} // namespace detail
+
+inline bool uuid::is_nil() const BOOST_NOEXCEPT
+{
+    __m128i mm = uuids::detail::load_unaligned_si128(data);
+#if defined(BOOST_UUID_USE_SSE41)
+    return _mm_test_all_zeros(mm, mm) != 0;
+#else
+    mm = _mm_cmpeq_epi8(mm, _mm_setzero_si128());
+    return _mm_movemask_epi8(mm) == 0xFFFF;
+#endif
+}
+
+inline void uuid::swap(uuid& rhs) BOOST_NOEXCEPT
+{
+    __m128i mm_this = uuids::detail::load_unaligned_si128(data);
+    __m128i mm_rhs = uuids::detail::load_unaligned_si128(rhs.data);
+    _mm_storeu_si128(reinterpret_cast< __m128i* >(rhs.data), mm_this);
+    _mm_storeu_si128(reinterpret_cast< __m128i* >(data), mm_rhs);
+}
+
+inline bool operator== (uuid const& lhs, uuid const& rhs) BOOST_NOEXCEPT
+{
+    __m128i mm_left = uuids::detail::load_unaligned_si128(lhs.data);
+    __m128i mm_right = uuids::detail::load_unaligned_si128(rhs.data);
+
+    __m128i mm_cmp = _mm_cmpeq_epi32(mm_left, mm_right);
+
+#if defined(BOOST_UUID_USE_SSE41)
+    return _mm_test_all_ones(mm_cmp) != 0;
+#else
+    return _mm_movemask_epi8(mm_cmp) == 0xFFFF;
+#endif
+}
+
+inline bool operator< (uuid const& lhs, uuid const& rhs) BOOST_NOEXCEPT
+{
+    __m128i mm_left = uuids::detail::load_unaligned_si128(lhs.data);
+    __m128i mm_right = uuids::detail::load_unaligned_si128(rhs.data);
+
+    // To emulate lexicographical_compare behavior we have to perform two comparisons - the forward and reverse one.
+    // Then we know which bytes are equivalent and which ones are different, and for those different the comparison results
+    // will be opposite. Then we'll be able to find the first differing comparison result (for both forward and reverse ways),
+    // and depending on which way it is for, this will be the result of the operation. There are a few notes to consider:
+    //
+    // 1. Due to little endian byte order the first bytes go into the lower part of the xmm registers,
+    //    so the comparison results in the least significant bits will actually be the most signigicant for the final operation result.
+    //    This means we have to determine which of the comparison results have the least significant bit on, and this is achieved with
+    //    the "(x - 1) ^ x" trick.
+    // 2. Because there is only signed comparison in SSE/AVX, we have to invert byte comparison results whenever signs of the corresponding
+    //    bytes are different. I.e. in signed comparison it's -1 < 1, but in unsigned it is the opposite (255 > 1). To do that we XOR left and right,
+    //    making the most significant bit of each byte 1 if the signs are different, and later apply this mask with another XOR to the comparison results.
+    // 3. pcmpgtw compares for "greater" relation, so we swap the arguments to get what we need.
+
+    const __m128i mm_signs_mask = _mm_xor_si128(mm_left, mm_right);
+
+    __m128i mm_cmp = _mm_cmpgt_epi8(mm_right, mm_left), mm_rcmp = _mm_cmpgt_epi8(mm_left, mm_right);
+
+    mm_cmp = _mm_xor_si128(mm_signs_mask, mm_cmp);
+    mm_rcmp = _mm_xor_si128(mm_signs_mask, mm_rcmp);
+
+    uint32_t cmp = static_cast< uint32_t >(_mm_movemask_epi8(mm_cmp)), rcmp = static_cast< uint32_t >(_mm_movemask_epi8(mm_rcmp));
+
+    cmp = (cmp - 1u) ^ cmp;
+    rcmp = (rcmp - 1u) ^ rcmp;
+
+    return cmp < rcmp;
+}
+
+} // namespace uuids
+} // namespace boost
+
+#endif // BOOST_UUID_DETAIL_UUID_X86_HPP_INCLUDED_