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Diffstat (limited to 'Firestore/Port/absl/absl_attributes.h')
| -rw-r--r-- | Firestore/Port/absl/absl_attributes.h | 644 |
1 files changed, 0 insertions, 644 deletions
diff --git a/Firestore/Port/absl/absl_attributes.h b/Firestore/Port/absl/absl_attributes.h deleted file mode 100644 index d43930c..0000000 --- a/Firestore/Port/absl/absl_attributes.h +++ /dev/null @@ -1,644 +0,0 @@ -/* - * Copyright 2017 Google - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -// Various macros for C++ attributes -// Most macros here are exposing GCC or Clang features, and are stubbed out for -// other compilers. -// GCC attributes documentation: -// https://gcc.gnu.org/onlinedocs/gcc-4.7.0/gcc/Function-Attributes.html -// https://gcc.gnu.org/onlinedocs/gcc-4.7.0/gcc/Variable-Attributes.html -// https://gcc.gnu.org/onlinedocs/gcc-4.7.0/gcc/Type-Attributes.html -// -// Most attributes in this file are already supported by GCC 4.7. -// However, some of them are not supported in older version of Clang. -// Thus, we check __has_attribute() first. If the check fails, we check if we -// are on GCC and assume the attribute exists on GCC (which is verified on GCC -// 4.7). -// -// For sanitizer-related attributes, define the following macros -// using -D along with the given value for -fsanitize: -// - ADDRESS_SANITIZER with -fsanitize=address (GCC 4.8+, Clang) -// - MEMORY_SANITIZER with -fsanitize=memory (Clang) -// - THREAD_SANITIZER with -fsanitize=thread (GCC 4.8+, Clang) -// - UNDEFINED_BEHAVIOR_SANITIZER with -fsanitize=undefined (GCC 4.9+, Clang) -// - CONTROL_FLOW_INTEGRITY with -fsanitize=cfi (Clang) -// Since these are only supported by GCC and Clang now, we only check for -// __GNUC__ (GCC or Clang) and the above macros. -#ifndef THIRD_PARTY_ABSL_BASE_ATTRIBUTES_H_ -#define THIRD_PARTY_ABSL_BASE_ATTRIBUTES_H_ - -// ABSL_HAVE_ATTRIBUTE is a function-like feature checking macro. -// It's a wrapper around __has_attribute, which is defined by GCC 5+ and Clang. -// It evaluates to a nonzero constant integer if the attribute is supported -// or 0 if not. -// It evaluates to zero if __has_attribute is not defined by the compiler. -// GCC: https://gcc.gnu.org/gcc-5/changes.html -// Clang: https://clang.llvm.org/docs/LanguageExtensions.html -#ifdef __has_attribute -#define ABSL_HAVE_ATTRIBUTE(x) __has_attribute(x) -#else -#define ABSL_HAVE_ATTRIBUTE(x) 0 -#endif - -// ABSL_HAVE_CPP_ATTRIBUTE is a function-like feature checking macro that -// accepts C++11 style attributes. It's a wrapper around __has_cpp_attribute, -// defined by ISO C++ SD-6 -// (http://en.cppreference.com/w/cpp/experimental/feature_test). If we don't -// find __has_cpp_attribute, will evaluate to 0. -#if defined(__cplusplus) && defined(__has_cpp_attribute) -// NOTE: requiring __cplusplus above should not be necessary, but -// works around https://bugs.llvm.org/show_bug.cgi?id=23435. -#define ABSL_HAVE_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) -#else -#define ABSL_HAVE_CPP_ATTRIBUTE(x) 0 -#endif - -// ----------------------------------------------------------------------------- -// Function Attributes -// ----------------------------------------------------------------------------- -// GCC: https://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html -// Clang: https://clang.llvm.org/docs/AttributeReference.html - -// PRINTF_ATTRIBUTE, SCANF_ATTRIBUTE -// Tell the compiler to do printf format std::string checking if the -// compiler supports it; see the 'format' attribute in -// <http://gcc.gnu.org/onlinedocs/gcc-4.7.0/gcc/Function-Attributes.html>. -// -// N.B.: As the GCC manual states, "[s]ince non-static C++ methods -// have an implicit 'this' argument, the arguments of such methods -// should be counted from two, not one." -#if ABSL_HAVE_ATTRIBUTE(format) || (defined(__GNUC__) && !defined(__clang__)) -#define ABSL_PRINTF_ATTRIBUTE(string_index, first_to_check) \ - __attribute__((__format__(__printf__, string_index, first_to_check))) -#define ABSL_SCANF_ATTRIBUTE(string_index, first_to_check) \ - __attribute__((__format__(__scanf__, string_index, first_to_check))) -#else -#define ABSL_PRINTF_ATTRIBUTE(string_index, first_to_check) -#define ABSL_SCANF_ATTRIBUTE(string_index, first_to_check) -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if ABSL_HAVE_ATTRIBUTE(format) || (defined(__GNUC__) && !defined(__clang__)) -#define PRINTF_ATTRIBUTE(string_index, first_to_check) \ - __attribute__((__format__(__printf__, string_index, first_to_check))) -#define SCANF_ATTRIBUTE(string_index, first_to_check) \ - __attribute__((__format__(__scanf__, string_index, first_to_check))) -#else -#define PRINTF_ATTRIBUTE(string_index, first_to_check) -#define SCANF_ATTRIBUTE(string_index, first_to_check) -#endif - -// ATTRIBUTE_ALWAYS_INLINE, ATTRIBUTE_NOINLINE -// For functions we want to force inline or not inline. -// Introduced in gcc 3.1. -#if ABSL_HAVE_ATTRIBUTE(always_inline) || (defined(__GNUC__) && !defined(__clang__)) -#define ABSL_ATTRIBUTE_ALWAYS_INLINE __attribute__((always_inline)) -#define ABSL_HAVE_ATTRIBUTE_ALWAYS_INLINE 1 -#else -#define ABSL_ATTRIBUTE_ALWAYS_INLINE -#endif - -#if ABSL_HAVE_ATTRIBUTE(noinline) || (defined(__GNUC__) && !defined(__clang__)) -#define ABSL_ATTRIBUTE_NOINLINE __attribute__((noinline)) -#define ABSL_HAVE_ATTRIBUTE_NOINLINE 1 -#else -#define ABSL_ATTRIBUTE_NOINLINE -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if ABSL_HAVE_ATTRIBUTE(always_inline) || (defined(__GNUC__) && !defined(__clang__)) -#define ATTRIBUTE_ALWAYS_INLINE __attribute__((always_inline)) -#define HAVE_ATTRIBUTE_ALWAYS_INLINE 1 -#else -#define ATTRIBUTE_ALWAYS_INLINE -#endif - -#if ABSL_HAVE_ATTRIBUTE(noinline) || (defined(__GNUC__) && !defined(__clang__)) -#define ATTRIBUTE_NOINLINE __attribute__((noinline)) -#define HAVE_ATTRIBUTE_NOINLINE 1 -#else -#define ATTRIBUTE_NOINLINE -#endif - -// ATTRIBUTE_NO_TAIL_CALL -// Prevent the compiler from optimizing away stack frames for functions which -// end in a call to another function. -#if ABSL_HAVE_ATTRIBUTE(disable_tail_calls) -#define ABSL_HAVE_ATTRIBUTE_NO_TAIL_CALL 1 -#define ABSL_ATTRIBUTE_NO_TAIL_CALL __attribute__((disable_tail_calls)) -#elif defined(__GNUC__) && !defined(__clang__) -#define ABSL_HAVE_ATTRIBUTE_NO_TAIL_CALL 1 -#define ABSL_ATTRIBUTE_NO_TAIL_CALL __attribute__((optimize("no-optimize-sibling-calls"))) -#else -#define ABSL_ATTRIBUTE_NO_TAIL_CALL -#define ABSL_HAVE_ATTRIBUTE_NO_TAIL_CALL 0 -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if ABSL_HAVE_ATTRIBUTE(disable_tail_calls) -#define HAVE_ATTRIBUTE_NO_TAIL_CALL 1 -#define ATTRIBUTE_NO_TAIL_CALL __attribute__((disable_tail_calls)) -#elif defined(__GNUC__) && !defined(__clang__) -#define HAVE_ATTRIBUTE_NO_TAIL_CALL 1 -#define ATTRIBUTE_NO_TAIL_CALL __attribute__((optimize("no-optimize-sibling-calls"))) -#else -#define ATTRIBUTE_NO_TAIL_CALL -#define HAVE_ATTRIBUTE_NO_TAIL_CALL 0 -#endif - -// ATTRIBUTE_WEAK -// For weak functions -#if ABSL_HAVE_ATTRIBUTE(weak) || (defined(__GNUC__) && !defined(__clang__)) -#undef ABSL_ATTRIBUTE_WEAK -#define ABSL_ATTRIBUTE_WEAK __attribute__((weak)) -#define ABSL_HAVE_ATTRIBUTE_WEAK 1 -#else -#define ABSL_ATTRIBUTE_WEAK -#define ABSL_HAVE_ATTRIBUTE_WEAK 0 -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if ABSL_HAVE_ATTRIBUTE(weak) || (defined(__GNUC__) && !defined(__clang__)) -#undef ATTRIBUTE_WEAK -#define ATTRIBUTE_WEAK __attribute__((weak)) -#define HAVE_ATTRIBUTE_WEAK 1 -#else -#define ATTRIBUTE_WEAK -#define HAVE_ATTRIBUTE_WEAK 0 -#endif - -// ATTRIBUTE_NONNULL -// Tell the compiler either that a particular function parameter -// should be a non-null pointer, or that all pointer arguments should -// be non-null. -// -// Note: As the GCC manual states, "[s]ince non-static C++ methods -// have an implicit 'this' argument, the arguments of such methods -// should be counted from two, not one." -// -// Args are indexed starting at 1. -// For non-static class member functions, the implicit "this" argument -// is arg 1, and the first explicit argument is arg 2. -// For static class member functions, there is no implicit "this", and -// the first explicit argument is arg 1. -// -// /* arg_a cannot be null, but arg_b can */ -// void Function(void* arg_a, void* arg_b) ATTRIBUTE_NONNULL(1); -// -// class C { -// /* arg_a cannot be null, but arg_b can */ -// void Method(void* arg_a, void* arg_b) ATTRIBUTE_NONNULL(2); -// -// /* arg_a cannot be null, but arg_b can */ -// static void StaticMethod(void* arg_a, void* arg_b) ATTRIBUTE_NONNULL(1); -// }; -// -// If no arguments are provided, then all pointer arguments should be non-null. -// -// /* No pointer arguments may be null. */ -// void Function(void* arg_a, void* arg_b, int arg_c) ATTRIBUTE_NONNULL(); -// -// NOTE: The GCC nonnull attribute actually accepts a list of arguments, but -// ATTRIBUTE_NONNULL does not. -#if ABSL_HAVE_ATTRIBUTE(nonnull) || (defined(__GNUC__) && !defined(__clang__)) -#define ABSL_ATTRIBUTE_NONNULL(arg_index) __attribute__((nonnull(arg_index))) -#else -#define ABSL_ATTRIBUTE_NONNULL(...) -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if ABSL_HAVE_ATTRIBUTE(nonnull) || (defined(__GNUC__) && !defined(__clang__)) -#define ATTRIBUTE_NONNULL(arg_index) __attribute__((nonnull(arg_index))) -#else -#define ATTRIBUTE_NONNULL(...) -#endif - -// ATTRIBUTE_NORETURN -// Tell the compiler that a given function never returns -#if ABSL_HAVE_ATTRIBUTE(noreturn) || (defined(__GNUC__) && !defined(__clang__)) -#define ABSL_ATTRIBUTE_NORETURN __attribute__((noreturn)) -#elif defined(_MSC_VER) -#define ABSL_ATTRIBUTE_NORETURN __declspec(noreturn) -#else -#define ABSL_ATTRIBUTE_NORETURN -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if ABSL_HAVE_ATTRIBUTE(noreturn) || (defined(__GNUC__) && !defined(__clang__)) -#define ATTRIBUTE_NORETURN __attribute__((noreturn)) -#elif defined(_MSC_VER) -#define ATTRIBUTE_NORETURN __declspec(noreturn) -#else -#define ATTRIBUTE_NORETURN -#endif - -// ATTRIBUTE_NO_SANITIZE_ADDRESS -// Tell AddressSanitizer (or other memory testing tools) to ignore a given -// function. Useful for cases when a function reads random locations on stack, -// calls _exit from a cloned subprocess, deliberately accesses buffer -// out of bounds or does other scary things with memory. -// NOTE: GCC supports AddressSanitizer(asan) since 4.8. -// https://gcc.gnu.org/gcc-4.8/changes.html -#if defined(__GNUC__) && defined(ADDRESS_SANITIZER) -#define ABSL_ATTRIBUTE_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address)) -#else -#define ABSL_ATTRIBUTE_NO_SANITIZE_ADDRESS -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if defined(__GNUC__) && defined(ADDRESS_SANITIZER) -#define ATTRIBUTE_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address)) -#else -#define ATTRIBUTE_NO_SANITIZE_ADDRESS -#endif - -// ATTRIBUTE_NO_SANITIZE_MEMORY -// Tell MemorySanitizer to relax the handling of a given function. All "Use of -// uninitialized value" warnings from such functions will be suppressed, and all -// values loaded from memory will be considered fully initialized. -// This is similar to the ADDRESS_SANITIZER attribute above, but deals with -// initializedness rather than addressability issues. -// NOTE: MemorySanitizer(msan) is supported by Clang but not GCC. -#if defined(__GNUC__) && defined(MEMORY_SANITIZER) -#define ABSL_ATTRIBUTE_NO_SANITIZE_MEMORY __attribute__((no_sanitize_memory)) -#else -#define ABSL_ATTRIBUTE_NO_SANITIZE_MEMORY -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if defined(__GNUC__) && defined(MEMORY_SANITIZER) -#define ATTRIBUTE_NO_SANITIZE_MEMORY __attribute__((no_sanitize_memory)) -#else -#define ATTRIBUTE_NO_SANITIZE_MEMORY -#endif - -// ATTRIBUTE_NO_SANITIZE_THREAD -// Tell ThreadSanitizer to not instrument a given function. -// If you are adding this attribute, please cc dynamic-tools@ on the cl. -// NOTE: GCC supports ThreadSanitizer(tsan) since 4.8. -// https://gcc.gnu.org/gcc-4.8/changes.html -#if defined(__GNUC__) && defined(THREAD_SANITIZER) -#define ABSL_ATTRIBUTE_NO_SANITIZE_THREAD __attribute__((no_sanitize_thread)) -#else -#define ABSL_ATTRIBUTE_NO_SANITIZE_THREAD -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if defined(__GNUC__) && defined(THREAD_SANITIZER) -#define ATTRIBUTE_NO_SANITIZE_THREAD __attribute__((no_sanitize_thread)) -#else -#define ATTRIBUTE_NO_SANITIZE_THREAD -#endif - -// ATTRIBUTE_NO_SANITIZE_UNDEFINED -// Tell UndefinedSanitizer to ignore a given function. Useful for cases -// where certain behavior (eg. devision by zero) is being used intentionally. -// NOTE: GCC supports UndefinedBehaviorSanitizer(ubsan) since 4.9. -// https://gcc.gnu.org/gcc-4.9/changes.html -#if defined(__GNUC__) && defined(UNDEFINED_BEHAVIOR_SANITIZER) -#define ABSL_ATTRIBUTE_NO_SANITIZE_UNDEFINED __attribute__((no_sanitize("undefined"))) -#else -#define ABSL_ATTRIBUTE_NO_SANITIZE_UNDEFINED -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if defined(__GNUC__) && defined(UNDEFINED_BEHAVIOR_SANITIZER) -#define ATTRIBUTE_NO_SANITIZE_UNDEFINED __attribute__((no_sanitize("undefined"))) -#else -#define ATTRIBUTE_NO_SANITIZE_UNDEFINED -#endif - -// ATTRIBUTE_NO_SANITIZE_CFI -// Tell ControlFlowIntegrity sanitizer to not instrument a given function. -#if defined(__GNUC__) && defined(CONTROL_FLOW_INTEGRITY) -#define ABSL_ATTRIBUTE_NO_SANITIZE_CFI __attribute__((no_sanitize("cfi"))) -#else -#define ABSL_ATTRIBUTE_NO_SANITIZE_CFI -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if defined(__GNUC__) && defined(CONTROL_FLOW_INTEGRITY) -#define ATTRIBUTE_NO_SANITIZE_CFI __attribute__((no_sanitize("cfi"))) -#else -#define ATTRIBUTE_NO_SANITIZE_CFI -#endif - -// ATTRIBUTE_SECTION -// Labeled sections are not supported on Darwin/iOS. -#ifdef ABSL_HAVE_ATTRIBUTE_SECTION -#error ABSL_HAVE_ATTRIBUTE_SECTION cannot be directly set -#elif (ABSL_HAVE_ATTRIBUTE(section) || (defined(__GNUC__) && !defined(__clang__))) && \ - !(defined(__APPLE__) && defined(__MACH__)) -#define ABSL_HAVE_ATTRIBUTE_SECTION 1 -// -// Tell the compiler/linker to put a given function into a section and define -// "__start_ ## name" and "__stop_ ## name" symbols to bracket the section. -// This functionality is supported by GNU linker. -// Any function with ATTRIBUTE_SECTION must not be inlined, or it will -// be placed into whatever section its caller is placed into. -// -#ifndef ABSL_ATTRIBUTE_SECTION -#define ABSL_ATTRIBUTE_SECTION(name) __attribute__((section(#name))) __attribute__((noinline)) -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#ifndef ATTRIBUTE_SECTION -#define ATTRIBUTE_SECTION(name) __attribute__((section(#name))) __attribute__((noinline)) -#endif - -// Tell the compiler/linker to put a given variable into a section and define -// "__start_ ## name" and "__stop_ ## name" symbols to bracket the section. -// This functionality is supported by GNU linker. -#ifndef ABSL_ATTRIBUTE_SECTION_VARIABLE -#define ABSL_ATTRIBUTE_SECTION_VARIABLE(name) __attribute__((section(#name))) -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#ifndef ATTRIBUTE_SECTION_VARIABLE -#define ATTRIBUTE_SECTION_VARIABLE(name) __attribute__((section(#name))) -#endif - -// -// Weak section declaration to be used as a global declaration -// for ATTRIBUTE_SECTION_START|STOP(name) to compile and link -// even without functions with ATTRIBUTE_SECTION(name). -// DEFINE_ATTRIBUTE_SECTION should be in the exactly one file; it's -// a no-op on ELF but not on Mach-O. -// -#ifndef ABSL_DECLARE_ATTRIBUTE_SECTION_VARS -#define ABSL_DECLARE_ATTRIBUTE_SECTION_VARS(name) \ - extern char __start_##name[] ATTRIBUTE_WEAK; \ - extern char __stop_##name[] ATTRIBUTE_WEAK -#endif -#ifndef ABSL_DEFINE_ATTRIBUTE_SECTION_VARS -#define ABSL_INIT_ATTRIBUTE_SECTION_VARS(name) -#define ABSL_DEFINE_ATTRIBUTE_SECTION_VARS(name) -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#ifndef DECLARE_ATTRIBUTE_SECTION_VARS -#define DECLARE_ATTRIBUTE_SECTION_VARS(name) \ - extern char __start_##name[] ATTRIBUTE_WEAK; \ - extern char __stop_##name[] ATTRIBUTE_WEAK -#endif -#ifndef DEFINE_ATTRIBUTE_SECTION_VARS -#define INIT_ATTRIBUTE_SECTION_VARS(name) -#define DEFINE_ATTRIBUTE_SECTION_VARS(name) -#endif - -// -// Return void* pointers to start/end of a section of code with -// functions having ATTRIBUTE_SECTION(name). -// Returns 0 if no such functions exits. -// One must DECLARE_ATTRIBUTE_SECTION_VARS(name) for this to compile and link. -// -#define ABSL_ATTRIBUTE_SECTION_START(name) (reinterpret_cast<void *>(__start_##name)) -#define ABSL_ATTRIBUTE_SECTION_STOP(name) (reinterpret_cast<void *>(__stop_##name)) - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#define ATTRIBUTE_SECTION_START(name) (reinterpret_cast<void *>(__start_##name)) -#define ATTRIBUTE_SECTION_STOP(name) (reinterpret_cast<void *>(__stop_##name)) - -#else // !ABSL_HAVE_ATTRIBUTE_SECTION - -#define ABSL_HAVE_ATTRIBUTE_SECTION 0 - -// provide dummy definitions -#define ABSL_ATTRIBUTE_SECTION(name) -#define ABSL_ATTRIBUTE_SECTION_VARIABLE(name) -#define ABSL_INIT_ATTRIBUTE_SECTION_VARS(name) -#define ABSL_DEFINE_ATTRIBUTE_SECTION_VARS(name) -#define ABSL_DECLARE_ATTRIBUTE_SECTION_VARS(name) -#define ABSL_ATTRIBUTE_SECTION_START(name) (reinterpret_cast<void *>(0)) -#define ABSL_ATTRIBUTE_SECTION_STOP(name) (reinterpret_cast<void *>(0)) - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#define ATTRIBUTE_SECTION(name) -#define ATTRIBUTE_SECTION_VARIABLE(name) -#define INIT_ATTRIBUTE_SECTION_VARS(name) -#define DEFINE_ATTRIBUTE_SECTION_VARS(name) -#define DECLARE_ATTRIBUTE_SECTION_VARS(name) -#define ATTRIBUTE_SECTION_START(name) (reinterpret_cast<void *>(0)) -#define ATTRIBUTE_SECTION_STOP(name) (reinterpret_cast<void *>(0)) - -#endif // ATTRIBUTE_SECTION - -// ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC -// Support for aligning the stack on 32-bit x86. -#if ABSL_HAVE_ATTRIBUTE(force_align_arg_pointer) || (defined(__GNUC__) && !defined(__clang__)) -#if defined(__i386__) -#define ABSL_ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC __attribute__((force_align_arg_pointer)) -#define ABSL_REQUIRE_STACK_ALIGN_TRAMPOLINE (0) -#elif defined(__x86_64__) -#define ABSL_REQUIRE_STACK_ALIGN_TRAMPOLINE (1) -#define ABSL_ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC -#else // !__i386__ && !__x86_64 -#define ABSL_REQUIRE_STACK_ALIGN_TRAMPOLINE (0) -#define ABSL_ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC -#endif // __i386__ -#else -#define ABSL_ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC -#define ABSL_REQUIRE_STACK_ALIGN_TRAMPOLINE (0) -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if ABSL_HAVE_ATTRIBUTE(force_align_arg_pointer) || (defined(__GNUC__) && !defined(__clang__)) -#if defined(__i386__) -#define ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC __attribute__((force_align_arg_pointer)) -#define REQUIRE_STACK_ALIGN_TRAMPOLINE (0) -#elif defined(__x86_64__) -#define REQUIRE_STACK_ALIGN_TRAMPOLINE (1) -#define ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC -#else // !__i386__ && !__x86_64 -#define REQUIRE_STACK_ALIGN_TRAMPOLINE (0) -#define ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC -#endif // __i386__ -#else -#define ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC -#define REQUIRE_STACK_ALIGN_TRAMPOLINE (0) -#endif - -// MUST_USE_RESULT -// Tell the compiler to warn about unused return values for functions declared -// with this macro. The macro must appear as the very first part of a function -// declaration or definition: -// -// MUST_USE_RESULT Sprocket* AllocateSprocket(); -// -// This placement has the broadest compatibility with GCC, Clang, and MSVC, with -// both defs and decls, and with GCC-style attributes, MSVC declspec, and C++11 -// attributes. Note: past advice was to place the macro after the argument list. -#if ABSL_HAVE_ATTRIBUTE(warn_unused_result) || (defined(__GNUC__) && !defined(__clang__)) -#define ABSL_MUST_USE_RESULT __attribute__((warn_unused_result)) -#else -#define ABSL_MUST_USE_RESULT -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if ABSL_HAVE_ATTRIBUTE(warn_unused_result) || (defined(__GNUC__) && !defined(__clang__)) -#define MUST_USE_RESULT __attribute__((warn_unused_result)) -#else -#define MUST_USE_RESULT -#endif - -// ATTRIBUTE_HOT, ATTRIBUTE_COLD -// Tell GCC that a function is hot or cold. GCC can use this information to -// improve static analysis, i.e. a conditional branch to a cold function -// is likely to be not-taken. -// This annotation is used for function declarations, e.g.: -// int foo() ATTRIBUTE_HOT; -#if ABSL_HAVE_ATTRIBUTE(hot) || (defined(__GNUC__) && !defined(__clang__)) -#define ABSL_ATTRIBUTE_HOT __attribute__((hot)) -#else -#define ABSL_ATTRIBUTE_HOT -#endif - -#if ABSL_HAVE_ATTRIBUTE(cold) || (defined(__GNUC__) && !defined(__clang__)) -#define ABSL_ATTRIBUTE_COLD __attribute__((cold)) -#else -#define ABSL_ATTRIBUTE_COLD -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if ABSL_HAVE_ATTRIBUTE(hot) || (defined(__GNUC__) && !defined(__clang__)) -#define ATTRIBUTE_HOT __attribute__((hot)) -#else -#define ATTRIBUTE_HOT -#endif - -#if ABSL_HAVE_ATTRIBUTE(cold) || (defined(__GNUC__) && !defined(__clang__)) -#define ATTRIBUTE_COLD __attribute__((cold)) -#else -#define ATTRIBUTE_COLD -#endif - -// ABSL_XRAY_ALWAYS_INSTRUMENT, ABSL_XRAY_NEVER_INSTRUMENT, ABSL_XRAY_LOG_ARGS -// -// We define the ABSL_XRAY_ALWAYS_INSTRUMENT and ABSL_XRAY_NEVER_INSTRUMENT -// macro used as an attribute to mark functions that must always or never be -// instrumented by XRay. Currently, this is only supported in Clang/LLVM. -// -// For reference on the LLVM XRay instrumentation, see -// http://llvm.org/docs/XRay.html. -// -// A function with the XRAY_ALWAYS_INSTRUMENT macro attribute in its declaration -// will always get the XRay instrumentation sleds. These sleds may introduce -// some binary size and runtime overhead and must be used sparingly. -// -// These attributes only take effect when the following conditions are met: -// -// - The file/target is built in at least C++11 mode, with a Clang compiler -// that supports XRay attributes. -// - The file/target is built with the -fxray-instrument flag set for the -// Clang/LLVM compiler. -// - The function is defined in the translation unit (the compiler honors the -// attribute in either the definition or the declaration, and must match). -// -// There are cases when, even when building with XRay instrumentation, users -// might want to control specifically which functions are instrumented for a -// particular build using special-case lists provided to the compiler. These -// special case lists are provided to Clang via the -// -fxray-always-instrument=... and -fxray-never-instrument=... flags. The -// attributes in source take precedence over these special-case lists. -// -// To disable the XRay attributes at build-time, users may define -// ABSL_NO_XRAY_ATTRIBUTES. Do NOT define ABSL_NO_XRAY_ATTRIBUTES on specific -// packages/targets, as this may lead to conflicting definitions of functions at -// link-time. -// -#if ABSL_HAVE_CPP_ATTRIBUTE(clang::xray_always_instrument) && !defined(ABSL_NO_XRAY_ATTRIBUTES) -#define ABSL_XRAY_ALWAYS_INSTRUMENT [[clang::xray_always_instrument]] -#define ABSL_XRAY_NEVER_INSTRUMENT [[clang::xray_never_instrument]] -#define ABSL_XRAY_LOG_ARGS(N) [[ clang::xray_always_instrument, clang::xray_log_args(N) ]] -#else -#define ABSL_XRAY_ALWAYS_INSTRUMENT -#define ABSL_XRAY_NEVER_INSTRUMENT -#define ABSL_XRAY_LOG_ARGS(N) -#endif - -// ----------------------------------------------------------------------------- -// Variable Attributes -// ----------------------------------------------------------------------------- - -// ATTRIBUTE_UNUSED -// Prevent the compiler from complaining about or optimizing away variables -// that appear unused. -#if ABSL_HAVE_ATTRIBUTE(unused) || (defined(__GNUC__) && !defined(__clang__)) -#undef ABSL_ATTRIBUTE_UNUSED -#define ABSL_ATTRIBUTE_UNUSED __attribute__((__unused__)) -#else -#define ABSL_ATTRIBUTE_UNUSED -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if ABSL_HAVE_ATTRIBUTE(unused) || (defined(__GNUC__) && !defined(__clang__)) -#undef ATTRIBUTE_UNUSED -#define ATTRIBUTE_UNUSED __attribute__((__unused__)) -#else -#define ATTRIBUTE_UNUSED -#endif - -// ATTRIBUTE_INITIAL_EXEC -// Tell the compiler to use "initial-exec" mode for a thread-local variable. -// See http://people.redhat.com/drepper/tls.pdf for the gory details. -#if ABSL_HAVE_ATTRIBUTE(tls_model) || (defined(__GNUC__) && !defined(__clang__)) -#define ABSL_ATTRIBUTE_INITIAL_EXEC __attribute__((tls_model("initial-exec"))) -#else -#define ABSL_ATTRIBUTE_INITIAL_EXEC -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if ABSL_HAVE_ATTRIBUTE(tls_model) || (defined(__GNUC__) && !defined(__clang__)) -#define ATTRIBUTE_INITIAL_EXEC __attribute__((tls_model("initial-exec"))) -#else -#define ATTRIBUTE_INITIAL_EXEC -#endif - -// ATTRIBUTE_PACKED -// Prevent the compiler from padding a structure to natural alignment -#if ABSL_HAVE_ATTRIBUTE(packed) || (defined(__GNUC__) && !defined(__clang__)) -#define ABSL_ATTRIBUTE_PACKED __attribute__((__packed__)) -#else -#define ABSL_ATTRIBUTE_PACKED -#endif - -// To be deleted macros. All macros are going te be renamed with ABSL_ prefix. -#if ABSL_HAVE_ATTRIBUTE(packed) || (defined(__GNUC__) && !defined(__clang__)) -#define ATTRIBUTE_PACKED __attribute__((__packed__)) -#else -#define ATTRIBUTE_PACKED -#endif - -// ABSL_CONST_INIT -// A variable declaration annotated with the ABSL_CONST_INIT attribute will -// not compile (on supported platforms) unless the variable has a constant -// initializer. This is useful for variables with static and thread storage -// duration, because it guarantees that they will not suffer from the so-called -// "static init order fiasco". -// -// Sample usage: -// -// ABSL_CONST_INIT static MyType my_var = MakeMyType(...); -// -// Note that this attribute is redundant if the variable is declared constexpr. -#if ABSL_HAVE_CPP_ATTRIBUTE(clang::require_constant_initialization) -// NOLINTNEXTLINE(whitespace/braces) (b/36288871) -#define ABSL_CONST_INIT [[clang::require_constant_initialization]] -#else -#define ABSL_CONST_INIT -#endif // ABSL_HAVE_CPP_ATTRIBUTE(clang::require_constant_initialization) - -#endif // THIRD_PARTY_ABSL_BASE_ATTRIBUTES_H_ |