diff options
Diffstat (limited to 'third_party/protobuf/3.6.0/src/google/protobuf/stubs/port.h')
| -rw-r--r-- | third_party/protobuf/3.6.0/src/google/protobuf/stubs/port.h | 542 |
1 files changed, 542 insertions, 0 deletions
diff --git a/third_party/protobuf/3.6.0/src/google/protobuf/stubs/port.h b/third_party/protobuf/3.6.0/src/google/protobuf/stubs/port.h new file mode 100644 index 0000000000..6b52305f93 --- /dev/null +++ b/third_party/protobuf/3.6.0/src/google/protobuf/stubs/port.h @@ -0,0 +1,542 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#ifndef GOOGLE_PROTOBUF_STUBS_PORT_H_ +#define GOOGLE_PROTOBUF_STUBS_PORT_H_ + +#include <assert.h> +#include <stdlib.h> +#include <cstddef> +#include <string> +#include <string.h> +#if defined(__osf__) +// Tru64 lacks stdint.h, but has inttypes.h which defines a superset of +// what stdint.h would define. +#include <inttypes.h> +#elif !defined(_MSC_VER) +#include <stdint.h> +#endif + +#include <google/protobuf/stubs/platform_macros.h> + +#undef PROTOBUF_LITTLE_ENDIAN +#ifdef _WIN32 + // Assuming windows is always little-endian. + // TODO(xiaofeng): The PROTOBUF_LITTLE_ENDIAN is not only used for + // optimization but also for correctness. We should define an + // different macro to test the big-endian code path in coded_stream. + #if !defined(PROTOBUF_DISABLE_LITTLE_ENDIAN_OPT_FOR_TEST) + #define PROTOBUF_LITTLE_ENDIAN 1 + #endif + #if _MSC_VER >= 1300 && !defined(__INTEL_COMPILER) + // If MSVC has "/RTCc" set, it will complain about truncating casts at + // runtime. This file contains some intentional truncating casts. + #pragma runtime_checks("c", off) + #endif +#else + #include <sys/param.h> // __BYTE_ORDER + #if defined(__OpenBSD__) + #include <endian.h> + #endif + #if ((defined(__LITTLE_ENDIAN__) && !defined(__BIG_ENDIAN__)) || \ + (defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN) || \ + (defined(BYTE_ORDER) && BYTE_ORDER == LITTLE_ENDIAN)) && \ + !defined(PROTOBUF_DISABLE_LITTLE_ENDIAN_OPT_FOR_TEST) + #define PROTOBUF_LITTLE_ENDIAN 1 + #endif +#endif +#if defined(_MSC_VER) && defined(PROTOBUF_USE_DLLS) + #ifdef LIBPROTOBUF_EXPORTS + #define LIBPROTOBUF_EXPORT __declspec(dllexport) + #else + #define LIBPROTOBUF_EXPORT __declspec(dllimport) + #endif + #ifdef LIBPROTOC_EXPORTS + #define LIBPROTOC_EXPORT __declspec(dllexport) + #else + #define LIBPROTOC_EXPORT __declspec(dllimport) + #endif +#else + #define LIBPROTOBUF_EXPORT + #define LIBPROTOC_EXPORT +#endif + +// These #includes are for the byte swap functions declared later on. +#ifdef _MSC_VER +#include <stdlib.h> // NOLINT(build/include) +#include <intrin.h> +#elif defined(__APPLE__) +#include <libkern/OSByteOrder.h> +#elif defined(__GLIBC__) || defined(__BIONIC__) || defined(__CYGWIN__) +#include <byteswap.h> // IWYU pragma: export +#endif + +#define PROTOBUF_RUNTIME_DEPRECATED(message) + +// =================================================================== +// from google3/base/port.h + +#if (defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L || \ + (defined(_MSC_VER) && _MSC_VER >= 1900)) +// Define this to 1 if the code is compiled in C++11 mode; leave it +// undefined otherwise. Do NOT define it to 0 -- that causes +// '#ifdef LANG_CXX11' to behave differently from '#if LANG_CXX11'. +#define LANG_CXX11 1 +#endif + +#if LANG_CXX11 && !defined(__NVCC__) +#define PROTOBUF_CXX11 1 +#else +#define PROTOBUF_CXX11 0 +#endif + +#if PROTOBUF_CXX11 +#define PROTOBUF_FINAL final +#else +#define PROTOBUF_FINAL +#endif + +namespace google { +namespace protobuf { + +typedef unsigned int uint; + +#ifdef _MSC_VER +typedef signed __int8 int8; +typedef __int16 int16; +typedef __int32 int32; +typedef __int64 int64; + +typedef unsigned __int8 uint8; +typedef unsigned __int16 uint16; +typedef unsigned __int32 uint32; +typedef unsigned __int64 uint64; +#else +typedef int8_t int8; +typedef int16_t int16; +typedef int32_t int32; +typedef int64_t int64; + +typedef uint8_t uint8; +typedef uint16_t uint16; +typedef uint32_t uint32; +typedef uint64_t uint64; +#endif + +// long long macros to be used because gcc and vc++ use different suffixes, +// and different size specifiers in format strings +#undef GOOGLE_LONGLONG +#undef GOOGLE_ULONGLONG +#undef GOOGLE_LL_FORMAT + +#ifdef _MSC_VER +#define GOOGLE_LONGLONG(x) x##I64 +#define GOOGLE_ULONGLONG(x) x##UI64 +#define GOOGLE_LL_FORMAT "I64" // As in printf("%I64d", ...) +#else +// By long long, we actually mean int64. +#define GOOGLE_LONGLONG(x) x##LL +#define GOOGLE_ULONGLONG(x) x##ULL +// Used to format real long long integers. +#define GOOGLE_LL_FORMAT "ll" // As in "%lld". Note that "q" is poor form also. +#endif + +static const int32 kint32max = 0x7FFFFFFF; +static const int32 kint32min = -kint32max - 1; +static const int64 kint64max = GOOGLE_LONGLONG(0x7FFFFFFFFFFFFFFF); +static const int64 kint64min = -kint64max - 1; +static const uint32 kuint32max = 0xFFFFFFFFu; +static const uint64 kuint64max = GOOGLE_ULONGLONG(0xFFFFFFFFFFFFFFFF); + +// ------------------------------------------------------------------- +// Annotations: Some parts of the code have been annotated in ways that might +// be useful to some compilers or tools, but are not supported universally. +// You can #define these annotations yourself if the default implementation +// is not right for you. + +#ifndef GOOGLE_ATTRIBUTE_ALWAYS_INLINE +#if defined(__GNUC__) && (__GNUC__ > 3 ||(__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) +// For functions we want to force inline. +// Introduced in gcc 3.1. +#define GOOGLE_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((always_inline)) +#else +// Other compilers will have to figure it out for themselves. +#define GOOGLE_ATTRIBUTE_ALWAYS_INLINE +#endif +#endif + +#define GOOGLE_PROTOBUF_ATTRIBUTE_ALWAYS_INLINE GOOGLE_ATTRIBUTE_ALWAYS_INLINE + +#ifndef GOOGLE_ATTRIBUTE_NOINLINE +#if defined(__GNUC__) && (__GNUC__ > 3 ||(__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) +// For functions we want to force not inline. +// Introduced in gcc 3.1. +#define GOOGLE_ATTRIBUTE_NOINLINE __attribute__ ((noinline)) +#elif defined(_MSC_VER) && (_MSC_VER >= 1400) +// Seems to have been around since at least Visual Studio 2005 +#define GOOGLE_ATTRIBUTE_NOINLINE __declspec(noinline) +#else +// Other compilers will have to figure it out for themselves. +#define GOOGLE_ATTRIBUTE_NOINLINE +#endif +#endif + +#define GOOGLE_PROTOBUF_ATTRIBUTE_NOINLINE GOOGLE_ATTRIBUTE_NOINLINE + +#ifndef GOOGLE_ATTRIBUTE_FUNC_ALIGN +#if defined(__clang__) || \ + defined(__GNUC__) && (__GNUC__ > 4 ||(__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) +// Function alignment attribute introduced in gcc 4.3 +#define GOOGLE_ATTRIBUTE_FUNC_ALIGN(bytes) __attribute__ ((aligned(bytes))) +#else +#define GOOGLE_ATTRIBUTE_FUNC_ALIGN(bytes) +#endif +#endif + +#define GOOGLE_PROTOBUF_ATTRIBUTE_FUNC_ALIGN(bytes) \ + GOOGLE_ATTRIBUTE_FUNC_ALIGN(bytes) + +#ifndef GOOGLE_PREDICT_TRUE +#ifdef __GNUC__ +// Provided at least since GCC 3.0. +#define GOOGLE_PREDICT_TRUE(x) (__builtin_expect(!!(x), 1)) +#else +#define GOOGLE_PREDICT_TRUE(x) (x) +#endif +#endif + +#ifndef GOOGLE_PREDICT_FALSE +#ifdef __GNUC__ +// Provided at least since GCC 3.0. +#define GOOGLE_PREDICT_FALSE(x) (__builtin_expect(x, 0)) +#else +#define GOOGLE_PREDICT_FALSE(x) (x) +#endif +#endif + +#ifndef GOOGLE_PROTOBUF_ATTRIBUTE_RETURNS_NONNULL +#ifdef __GNUC__ +#define GOOGLE_PROTOBUF_ATTRIBUTE_RETURNS_NONNULL \ + __attribute__((returns_nonnull)) +#endif +#endif + +// Delimits a block of code which may write to memory which is simultaneously +// written by other threads, but which has been determined to be thread-safe +// (e.g. because it is an idempotent write). +#ifndef GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN +#define GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN() +#endif +#ifndef GOOGLE_SAFE_CONCURRENT_WRITES_END +#define GOOGLE_SAFE_CONCURRENT_WRITES_END() +#endif + +#define GOOGLE_GUARDED_BY(x) +#define GOOGLE_ATTRIBUTE_COLD + +#ifdef GOOGLE_PROTOBUF_DONT_USE_UNALIGNED +# define GOOGLE_PROTOBUF_USE_UNALIGNED 0 +#else +# if defined(_M_X64) || defined(__x86_64__) || defined(_M_IX86) || defined(__i386__) +# define GOOGLE_PROTOBUF_USE_UNALIGNED 1 +# else +# define GOOGLE_PROTOBUF_USE_UNALIGNED 0 +# endif +#endif + +#define GOOGLE_PROTOBUF_ATTRIBUTE_COLD GOOGLE_ATTRIBUTE_COLD + +#if defined(ADDRESS_SANITIZER) || defined(THREAD_SANITIZER) ||\ + defined(MEMORY_SANITIZER) + +#ifdef __cplusplus +extern "C" { +#endif // __cplusplus +uint16_t __sanitizer_unaligned_load16(const void *p); +uint32_t __sanitizer_unaligned_load32(const void *p); +uint64_t __sanitizer_unaligned_load64(const void *p); +void __sanitizer_unaligned_store16(void *p, uint16_t v); +void __sanitizer_unaligned_store32(void *p, uint32_t v); +void __sanitizer_unaligned_store64(void *p, uint64_t v); +#ifdef __cplusplus +} // extern "C" +#endif // __cplusplus + +inline uint16 GOOGLE_UNALIGNED_LOAD16(const void *p) { + return __sanitizer_unaligned_load16(p); +} + +inline uint32 GOOGLE_UNALIGNED_LOAD32(const void *p) { + return __sanitizer_unaligned_load32(p); +} + +inline uint64 GOOGLE_UNALIGNED_LOAD64(const void *p) { + return __sanitizer_unaligned_load64(p); +} + +inline void GOOGLE_UNALIGNED_STORE16(void *p, uint16 v) { + __sanitizer_unaligned_store16(p, v); +} + +inline void GOOGLE_UNALIGNED_STORE32(void *p, uint32 v) { + __sanitizer_unaligned_store32(p, v); +} + +inline void GOOGLE_UNALIGNED_STORE64(void *p, uint64 v) { + __sanitizer_unaligned_store64(p, v); +} + +#elif GOOGLE_PROTOBUF_USE_UNALIGNED + +#define GOOGLE_UNALIGNED_LOAD16(_p) (*reinterpret_cast<const uint16 *>(_p)) +#define GOOGLE_UNALIGNED_LOAD32(_p) (*reinterpret_cast<const uint32 *>(_p)) +#define GOOGLE_UNALIGNED_LOAD64(_p) (*reinterpret_cast<const uint64 *>(_p)) + +#define GOOGLE_UNALIGNED_STORE16(_p, _val) (*reinterpret_cast<uint16 *>(_p) = (_val)) +#define GOOGLE_UNALIGNED_STORE32(_p, _val) (*reinterpret_cast<uint32 *>(_p) = (_val)) +#define GOOGLE_UNALIGNED_STORE64(_p, _val) (*reinterpret_cast<uint64 *>(_p) = (_val)) + +#else +inline uint16 GOOGLE_UNALIGNED_LOAD16(const void *p) { + uint16 t; + memcpy(&t, p, sizeof t); + return t; +} + +inline uint32 GOOGLE_UNALIGNED_LOAD32(const void *p) { + uint32 t; + memcpy(&t, p, sizeof t); + return t; +} + +inline uint64 GOOGLE_UNALIGNED_LOAD64(const void *p) { + uint64 t; + memcpy(&t, p, sizeof t); + return t; +} + +inline void GOOGLE_UNALIGNED_STORE16(void *p, uint16 v) { + memcpy(p, &v, sizeof v); +} + +inline void GOOGLE_UNALIGNED_STORE32(void *p, uint32 v) { + memcpy(p, &v, sizeof v); +} + +inline void GOOGLE_UNALIGNED_STORE64(void *p, uint64 v) { + memcpy(p, &v, sizeof v); +} +#endif + +#if defined(GOOGLE_PROTOBUF_OS_NACL) \ + || (defined(__ANDROID__) && defined(__clang__) \ + && (__clang_major__ == 3 && __clang_minor__ == 8) \ + && (__clang_patchlevel__ < 275480)) +# define GOOGLE_PROTOBUF_USE_PORTABLE_LOG2 +#endif + +#if defined(_MSC_VER) +#define GOOGLE_THREAD_LOCAL __declspec(thread) +#else +#define GOOGLE_THREAD_LOCAL __thread +#endif + +// The following guarantees declaration of the byte swap functions. +#ifdef _MSC_VER +#define bswap_16(x) _byteswap_ushort(x) +#define bswap_32(x) _byteswap_ulong(x) +#define bswap_64(x) _byteswap_uint64(x) + +#elif defined(__APPLE__) +// Mac OS X / Darwin features +#define bswap_16(x) OSSwapInt16(x) +#define bswap_32(x) OSSwapInt32(x) +#define bswap_64(x) OSSwapInt64(x) + +#elif !defined(__GLIBC__) && !defined(__BIONIC__) && !defined(__CYGWIN__) + +static inline uint16 bswap_16(uint16 x) { + return static_cast<uint16>(((x & 0xFF) << 8) | ((x & 0xFF00) >> 8)); +} +#define bswap_16(x) bswap_16(x) +static inline uint32 bswap_32(uint32 x) { + return (((x & 0xFF) << 24) | + ((x & 0xFF00) << 8) | + ((x & 0xFF0000) >> 8) | + ((x & 0xFF000000) >> 24)); +} +#define bswap_32(x) bswap_32(x) +static inline uint64 bswap_64(uint64 x) { + return (((x & GOOGLE_ULONGLONG(0xFF)) << 56) | + ((x & GOOGLE_ULONGLONG(0xFF00)) << 40) | + ((x & GOOGLE_ULONGLONG(0xFF0000)) << 24) | + ((x & GOOGLE_ULONGLONG(0xFF000000)) << 8) | + ((x & GOOGLE_ULONGLONG(0xFF00000000)) >> 8) | + ((x & GOOGLE_ULONGLONG(0xFF0000000000)) >> 24) | + ((x & GOOGLE_ULONGLONG(0xFF000000000000)) >> 40) | + ((x & GOOGLE_ULONGLONG(0xFF00000000000000)) >> 56)); +} +#define bswap_64(x) bswap_64(x) + +#endif + +// =================================================================== +// from google3/util/bits/bits.h + +class Bits { + public: + static uint32 Log2FloorNonZero(uint32 n) { +#if defined(__GNUC__) + return 31 ^ static_cast<uint32>(__builtin_clz(n)); +#elif defined(_MSC_VER) + unsigned long where; + _BitScanReverse(&where, n); + return where; +#else + return Log2FloorNonZero_Portable(n); +#endif + } + + static uint32 Log2FloorNonZero64(uint64 n) { + // Older versions of clang run into an instruction-selection failure when + // it encounters __builtin_clzll: + // https://bugs.chromium.org/p/nativeclient/issues/detail?id=4395 + // This includes arm-nacl-clang and clang in older Android NDK versions. + // To work around this, when we build with those we use the portable + // implementation instead. +#if defined(__GNUC__) && !defined(GOOGLE_PROTOBUF_USE_PORTABLE_LOG2) + return 63 ^ static_cast<uint32>(__builtin_clzll(n)); +#elif defined(_MSC_VER) && defined(_M_X64) + unsigned long where; + _BitScanReverse64(&where, n); + return where; +#else + return Log2FloorNonZero64_Portable(n); +#endif + } + private: + static int Log2FloorNonZero_Portable(uint32 n) { + if (n == 0) + return -1; + int log = 0; + uint32 value = n; + for (int i = 4; i >= 0; --i) { + int shift = (1 << i); + uint32 x = value >> shift; + if (x != 0) { + value = x; + log += shift; + } + } + assert(value == 1); + return log; + } + + static int Log2FloorNonZero64_Portable(uint64 n) { + const uint32 topbits = static_cast<uint32>(n >> 32); + if (topbits == 0) { + // Top bits are zero, so scan in bottom bits + return static_cast<int>(Log2FloorNonZero(static_cast<uint32>(n))); + } else { + return 32 + static_cast<int>(Log2FloorNonZero(topbits)); + } + } +}; + +// =================================================================== +// from google3/util/endian/endian.h +LIBPROTOBUF_EXPORT uint32 ghtonl(uint32 x); + +class BigEndian { + public: +#ifdef PROTOBUF_LITTLE_ENDIAN + + static uint16 FromHost16(uint16 x) { return bswap_16(x); } + static uint16 ToHost16(uint16 x) { return bswap_16(x); } + + static uint32 FromHost32(uint32 x) { return bswap_32(x); } + static uint32 ToHost32(uint32 x) { return bswap_32(x); } + + static uint64 FromHost64(uint64 x) { return bswap_64(x); } + static uint64 ToHost64(uint64 x) { return bswap_64(x); } + + static bool IsLittleEndian() { return true; } + +#else + + static uint16 FromHost16(uint16 x) { return x; } + static uint16 ToHost16(uint16 x) { return x; } + + static uint32 FromHost32(uint32 x) { return x; } + static uint32 ToHost32(uint32 x) { return x; } + + static uint64 FromHost64(uint64 x) { return x; } + static uint64 ToHost64(uint64 x) { return x; } + + static bool IsLittleEndian() { return false; } + +#endif /* ENDIAN */ + + // Functions to do unaligned loads and stores in big-endian order. + static uint16 Load16(const void *p) { + return ToHost16(GOOGLE_UNALIGNED_LOAD16(p)); + } + + static void Store16(void *p, uint16 v) { + GOOGLE_UNALIGNED_STORE16(p, FromHost16(v)); + } + + static uint32 Load32(const void *p) { + return ToHost32(GOOGLE_UNALIGNED_LOAD32(p)); + } + + static void Store32(void *p, uint32 v) { + GOOGLE_UNALIGNED_STORE32(p, FromHost32(v)); + } + + static uint64 Load64(const void *p) { + return ToHost64(GOOGLE_UNALIGNED_LOAD64(p)); + } + + static void Store64(void *p, uint64 v) { + GOOGLE_UNALIGNED_STORE64(p, FromHost64(v)); + } +}; + +#ifndef GOOGLE_ATTRIBUTE_SECTION_VARIABLE +#define GOOGLE_ATTRIBUTE_SECTION_VARIABLE(name) +#endif + +#define GOOGLE_PROTOBUF_ATTRIBUTE_SECTION_VARIABLE(name) + +} // namespace protobuf +} // namespace google + +#endif // GOOGLE_PROTOBUF_STUBS_PORT_H_ |