diff options
Diffstat (limited to 'Firestore/third_party/abseil-cpp/absl/base')
17 files changed, 3146 insertions, 0 deletions
diff --git a/Firestore/third_party/abseil-cpp/absl/base/CMakeLists.txt b/Firestore/third_party/abseil-cpp/absl/base/CMakeLists.txt new file mode 100644 index 0000000..3e94d51 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/CMakeLists.txt @@ -0,0 +1,341 @@ +# +# Copyright 2017 The Abseil Authors. +# +# 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. +# + +list(APPEND BASE_PUBLIC_HEADERS + "attributes.h" + "call_once.h" + "casts.h" + "config.h" + "dynamic_annotations.h" + "macros.h" + "optimization.h" + "policy_checks.h" + "port.h" + "thread_annotations.h" +) + + +list(APPEND BASE_INTERNAL_HEADERS + "internal/atomic_hook.h" + "internal/cycleclock.h" + "internal/endian.h" + "internal/exception_testing.h" + "internal/identity.h" + "internal/invoke.h" + "internal/log_severity.h" + "internal/low_level_alloc.h" + "internal/low_level_scheduling.h" + "internal/malloc_extension_c.h" + "internal/malloc_extension.h" + "internal/malloc_hook_c.h" + "internal/malloc_hook.h" + "internal/malloc_hook_invoke.h" + "internal/per_thread_tls.h" + "internal/raw_logging.h" + "internal/scheduling_mode.h" + "internal/spinlock.h" + "internal/spinlock_wait.h" + "internal/sysinfo.h" + "internal/thread_identity.h" + "internal/throw_delegate.h" + "internal/tsan_mutex_interface.h" + "internal/unaligned_access.h" + "internal/unscaledcycleclock.h" +) + + +# absl_base main library +list(APPEND BASE_SRC + "internal/cycleclock.cc" + "internal/raw_logging.cc" + "internal/spinlock.cc" + "internal/sysinfo.cc" + "internal/thread_identity.cc" + "internal/unscaledcycleclock.cc" + "internal/low_level_alloc.cc" + "internal/malloc_hook.cc" + ${BASE_PUBLIC_HEADERS} + ${BASE_INTERNAL_HEADERS} +) + +absl_library( + TARGET + absl_base + SOURCES + ${BASE_SRC} + PUBLIC_LIBRARIES + absl_dynamic_annotations + absl_spinlock_wait + EXPORT_NAME + base +) + +# malloc extension library +set(MALLOC_EXTENSION_SRC "internal/malloc_extension.cc") +set(MALLOC_EXTENSION_PUBLIC_LIBRARIES absl::base) + +absl_library( + TARGET + absl_malloc_extension + SOURCES + ${MALLOC_EXTENSION_SRC} + PUBLIC_LIBRARIES + ${MALLOC_EXTENSION_PUBLIC_LIBRARIES} + EXPORT_NAME + malloc_extension +) + +# throw delegate library +set(THROW_DELEGATE_SRC "internal/throw_delegate.cc") + +absl_library( + TARGET + absl_throw_delegate + SOURCES + ${THROW_DELEGATE_SRC} + PUBLIC_LIBRARIES + ${THROW_DELEGATE_PUBLIC_LIBRARIES} + PRIVATE_COMPILE_FLAGS + ${ABSL_EXCEPTIONS_FLAG} + EXPORT_NAME + throw_delegate +) + + +# dynamic_annotations library +set(DYNAMIC_ANNOTATIONS_SRC "dynamic_annotations.cc") + +absl_library( + TARGET + absl_dynamic_annotations + SOURCES + ${DYNAMIC_ANNOTATIONS_SRC} +) + + +# spinlock_wait library +set(SPINLOCK_WAIT_SRC "internal/spinlock_wait.cc") + +absl_library( + TARGET + absl_spinlock_wait + SOURCES + ${SPINLOCK_WAIT_SRC} +) + + +# malloc_internal library +list(APPEND MALLOC_INTERNAL_SRC + "internal/low_level_alloc.cc" + "internal/malloc_hook.cc" + "internal/malloc_hook_mmap_linux.inc" +) + +absl_library( + TARGET + absl_malloc_internal + SOURCES + ${MALLOC_INTERNAL_SRC} + PUBLIC_LIBRARIES + absl_dynamic_annotations +) + + + +# +## TESTS +# + +# call once test +set(CALL_ONCE_TEST_SRC "call_once_test.cc") +set(CALL_ONCE_TEST_PUBLIC_LIBRARIES absl::base absl::synchronization) + +absl_test( + TARGET + call_once_test + SOURCES + ${CALL_ONCE_TEST_SRC} + PUBLIC_LIBRARIES + ${CALL_ONCE_TEST_PUBLIC_LIBRARIES} +) + + +# test bit_cast_test +set(BIT_CAST_TEST_SRC "bit_cast_test.cc") + +absl_test( + TARGET + bit_cast_test + SOURCES + ${BIT_CAST_TEST_SRC} +) + + +# test absl_throw_delegate_test +set(THROW_DELEGATE_TEST_SRC "throw_delegate_test.cc") +set(THROW_DELEGATE_TEST_PUBLIC_LIBRARIES absl::base absl_throw_delegate) + +absl_test( + TARGET + throw_delegate_test + SOURCES + ${THROW_DELEGATE_TEST_SRC} + PUBLIC_LIBRARIES + ${THROW_DELEGATE_TEST_PUBLIC_LIBRARIES} +) + + +# test invoke_test +set(INVOKE_TEST_SRC "invoke_test.cc") +set(INVOKE_TEST_PUBLIC_LIBRARIES absl::strings) + +absl_test( + TARGET + invoke_test + SOURCES + ${INVOKE_TEST_SRC} + PUBLIC_LIBRARIES + ${INVOKE_TEST_PUBLIC_LIBRARIES} +) + + +# test spinlock_test_common +set(SPINLOCK_TEST_COMMON_SRC "spinlock_test_common.cc") +set(SPINLOCK_TEST_COMMON_PUBLIC_LIBRARIES absl::base absl::synchronization) + +absl_test( + TARGET + spinlock_test_common + SOURCES + ${SPINLOCK_TEST_COMMON_SRC} + PUBLIC_LIBRARIES + ${SPINLOCK_TEST_COMMON_PUBLIC_LIBRARIES} +) + + +# test spinlock_test +set(SPINLOCK_TEST_SRC "spinlock_test_common.cc") +set(SPINLOCK_TEST_PUBLIC_LIBRARIES absl::base absl::synchronization) + +absl_test( + TARGET + spinlock_test + SOURCES + ${SPINLOCK_TEST_SRC} + PUBLIC_LIBRARIES + ${SPINLOCK_TEST_PUBLIC_LIBRARIES} +) + + +# test endian_test +set(ENDIAN_TEST_SRC "internal/endian_test.cc") + +absl_test( + TARGET + endian_test + SOURCES + ${ENDIAN_TEST_SRC} +) + + +# test config_test +set(CONFIG_TEST_SRC "config_test.cc") +set(CONFIG_TEST_PUBLIC_LIBRARIES absl::base absl::synchronization) +absl_test( + TARGET + config_test + SOURCES + ${CONFIG_TEST_SRC} + PUBLIC_LIBRARIES + ${CONFIG_TEST_PUBLIC_LIBRARIES} +) + + +# test raw_logging_test +set(RAW_LOGGING_TEST_SRC "raw_logging_test.cc") +set(RAW_LOGGING_TEST_PUBLIC_LIBRARIES absl::base) + +absl_test( + TARGET + raw_logging_test + SOURCES + ${RAW_LOGGING_TEST_SRC} + PUBLIC_LIBRARIES + ${RAW_LOGGING_TEST_PUBLIC_LIBRARIES} +) + + +# test sysinfo_test +set(SYSINFO_TEST_SRC "internal/sysinfo_test.cc") +set(SYSINFO_TEST_PUBLIC_LIBRARIES absl::base absl::synchronization) + +absl_test( + TARGET + sysinfo_test + SOURCES + ${SYSINFO_TEST_SRC} + PUBLIC_LIBRARIES + ${SYSINFO_TEST_PUBLIC_LIBRARIES} +) + + +# test low_level_alloc_test +set(LOW_LEVEL_ALLOC_TEST_SRC "internal/low_level_alloc_test.cc") +set(LOW_LEVEL_ALLOC_TEST_PUBLIC_LIBRARIES absl::base) + +absl_test( + TARGET + low_level_alloc_test + SOURCES + ${LOW_LEVEL_ALLOC_TEST_SRC} + PUBLIC_LIBRARIES + ${LOW_LEVEL_ALLOC_TEST_PUBLIC_LIBRARIES} +) + + +# test thread_identity_test +set(THREAD_IDENTITY_TEST_SRC "internal/thread_identity_test.cc") +set(THREAD_IDENTITY_TEST_PUBLIC_LIBRARIES absl::base absl::synchronization) + +absl_test( + TARGET + thread_identity_test + SOURCES + ${THREAD_IDENTITY_TEST_SRC} + PUBLIC_LIBRARIES + ${THREAD_IDENTITY_TEST_PUBLIC_LIBRARIES} +) + + +# test absl_malloc_extension_system_malloc_test +set(MALLOC_EXTENSION_SYSTEM_MALLOC_TEST_SRC "internal/malloc_extension_test.cc") +set(MALLOC_EXTENSION_SYSTEM_MALLOC_TEST_PUBLIC_LIBRARIES absl::base absl_malloc_extension) +set(MALLOC_EXTENSION_SYSTEM_MALLOC_TEST_PRIVATE_COMPILE_FLAGS "-DABSL_MALLOC_EXTENSION_TEST_ALLOW_MISSING_EXTENSION=1") + +absl_test( + TARGET + absl_malloc_extension_system_malloc_test + SOURCES + ${MALLOC_EXTENSION_SYSTEM_MALLOC_TEST_SRC} + PUBLIC_LIBRARIES + ${MALLOC_EXTENSION_SYSTEM_MALLOC_TEST_PUBLIC_LIBRARIES} + PRIVATE_COMPILE_FLAGS + ${MALLOC_EXTENSION_SYSTEM_MALLOC_TEST_PRIVATE_COMPILE_FLAGS} +) + + + + diff --git a/Firestore/third_party/abseil-cpp/absl/base/attributes.h b/Firestore/third_party/abseil-cpp/absl/base/attributes.h new file mode 100644 index 0000000..6f3cfe4 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/attributes.h @@ -0,0 +1,535 @@ +// Copyright 2017 The Abseil Authors. +// +// 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. +// +// This header file defines macros for declaring attributes for functions, +// types, and variables. +// +// These macros are used within Abseil and allow the compiler to optimize, where +// applicable, certain function calls. +// +// This file is used for both C and C++! +// +// 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). +// +// ----------------------------------------------------------------------------- +// Sanitizer Attributes +// ----------------------------------------------------------------------------- +// +// Sanitizer-related attributes are not "defined" in this file (and indeed +// are not defined as such in any file). To utilize the following +// sanitizer-related attributes within your builds, define the following macros +// within your build using a `-D` flag, along with the given value for +// `-fsanitize`: +// +// * `ADDRESS_SANITIZER` + `-fsanitize=address` (Clang, GCC 4.8) +// * `MEMORY_SANITIZER` + `-fsanitize=memory` (Clang-only) +// * `THREAD_SANITIZER + `-fsanitize=thread` (Clang, GCC 4.8+) +// * `UNDEFINED_BEHAVIOR_SANITIZER` + `-fsanitize=undefined` (Clang, GCC 4.9+) +// * `CONTROL_FLOW_INTEGRITY` + -fsanitize=cfi (Clang-only) +// +// Example: +// +// // Enable branches in the Abseil code that are tagged for ASan: +// $ bazel -D ADDRESS_SANITIZER -fsanitize=address *target* +// +// Since these macro names are only supported by GCC and Clang, we only check +// for `__GNUC__` (GCC or Clang) and the above macros. +#ifndef ABSL_BASE_ATTRIBUTES_H_ +#define ABSL_BASE_ATTRIBUTES_H_ + +// ABSL_HAVE_ATTRIBUTE +// +// A function-like feature checking macro that is a wrapper around +// `__has_attribute`, which is defined by GCC 5+ and Clang and 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 +// +// 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 + +// ABSL_PRINTF_ATTRIBUTE +// ABSL_SCANF_ATTRIBUTE +// +// Tells the compiler to perform `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>. +// +// 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." +#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 + +// ABSL_ATTRIBUTE_ALWAYS_INLINE +// ABSL_ATTRIBUTE_NOINLINE +// +// Forces functions to either 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 + +// ABSL_ATTRIBUTE_NO_TAIL_CALL +// +// Prevents 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 + +// ABSL_ATTRIBUTE_WEAK +// +// Tags a function as weak for the purposes of compilation and linking. +#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 + +// ABSL_ATTRIBUTE_NONNULL +// +// Tells the compiler either (a) that a particular function parameter +// should be a non-null pointer, or (b) 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. +// +// Example: +// +// /* arg_a cannot be null, but arg_b can */ +// void Function(void* arg_a, void* arg_b) ABSL_ATTRIBUTE_NONNULL(1); +// +// class C { +// /* arg_a cannot be null, but arg_b can */ +// void Method(void* arg_a, void* arg_b) ABSL_ATTRIBUTE_NONNULL(2); +// +// /* arg_a cannot be null, but arg_b can */ +// static void StaticMethod(void* arg_a, void* arg_b) +// ABSL_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) ABSL_ATTRIBUTE_NONNULL(); +// +// NOTE: The GCC nonnull attribute actually accepts a list of arguments, but +// ABSL_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 + +// ABSL_ATTRIBUTE_NORETURN +// +// Tells 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 + +// ABSL_ATTRIBUTE_NO_SANITIZE_ADDRESS +// +// Tells the 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 + +// ABSL_ATTRIBUTE_NO_SANITIZE_MEMORY +// +// Tells the 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 attribute is similar to the ADDRESS_SANITIZER attribute above, but deals +// with initialized-ness 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 + +// ABSL_ATTRIBUTE_NO_SANITIZE_THREAD +// +// Tells the ThreadSanitizer to not instrument a given function. +// 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 + +// ABSL_ATTRIBUTE_NO_SANITIZE_UNDEFINED +// +// Tells the UndefinedSanitizer to ignore a given function. Useful for cases +// where certain behavior (eg. division 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) || defined(ADDRESS_SANITIZER)) +#define ABSL_ATTRIBUTE_NO_SANITIZE_UNDEFINED \ + __attribute__((no_sanitize("undefined"))) +#else +#define ABSL_ATTRIBUTE_NO_SANITIZE_UNDEFINED +#endif + +// ABSL_ATTRIBUTE_NO_SANITIZE_CFI +// +// Tells the ControlFlowIntegrity sanitizer to not instrument a given function. +// See https://clang.llvm.org/docs/ControlFlowIntegrity.html for details. +#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 + +// ABSL_HAVE_ATTRIBUTE_SECTION +// +// Indicates whether labeled sections are supported. 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__) +#define ABSL_HAVE_ATTRIBUTE_SECTION 1 + +// ABSL_ATTRIBUTE_SECTION +// +// Tells 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 annotated with +// `ABSL_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 + +// ABSL_ATTRIBUTE_SECTION_VARIABLE +// +// Tells 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 + +// ABSL_DECLARE_ATTRIBUTE_SECTION_VARS +// +// A weak section declaration to be used as a global declaration +// for ABSL_ATTRIBUTE_SECTION_START|STOP(name) to compile and link +// even without functions with ABSL_ATTRIBUTE_SECTION(name). +// ABSL_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[] ABSL_ATTRIBUTE_WEAK; \ + extern char __stop_##name[] ABSL_ATTRIBUTE_WEAK +#endif +#ifndef ABSL_DEFINE_ATTRIBUTE_SECTION_VARS +#define ABSL_INIT_ATTRIBUTE_SECTION_VARS(name) +#define ABSL_DEFINE_ATTRIBUTE_SECTION_VARS(name) +#endif + +// ABSL_ATTRIBUTE_SECTION_START +// +// Returns `void*` pointers to start/end of a section of code with +// functions having ABSL_ATTRIBUTE_SECTION(name). +// Returns 0 if no such functions exist. +// One must ABSL_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)) +#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)) +#endif // ABSL_ATTRIBUTE_SECTION + +// ABSL_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 + +// ABSL_MUST_USE_RESULT +// +// Tells 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: +// +// Example: +// +// ABSL_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, C++11 +// and C++17 attributes. +// +// ABSL_MUST_USE_RESULT allows using cast-to-void to suppress the unused result +// warning. For that, warn_unused_result is used only for clang but not for gcc. +// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66425 +// +// Note: past advice was to place the macro after the argument list. +#if ABSL_HAVE_ATTRIBUTE(nodiscard) +#define ABSL_MUST_USE_RESULT [[nodiscard]] +#elif defined(__clang__) && ABSL_HAVE_ATTRIBUTE(warn_unused_result) +#define ABSL_MUST_USE_RESULT __attribute__((warn_unused_result)) +#else +#define ABSL_MUST_USE_RESULT +#endif + +// ABSL_ATTRIBUTE_HOT, ABSL_ATTRIBUTE_COLD +// +// Tells 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. +// +// Example: +// +// int foo() ABSL_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 + +// 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]] +#if ABSL_HAVE_CPP_ATTRIBUTE(clang::xray_log_args) +#define ABSL_XRAY_LOG_ARGS(N) \ + [[clang::xray_always_instrument, clang::xray_log_args(N)]] +#else +#define ABSL_XRAY_LOG_ARGS(N) [[clang::xray_always_instrument]] +#endif +#else +#define ABSL_XRAY_ALWAYS_INSTRUMENT +#define ABSL_XRAY_NEVER_INSTRUMENT +#define ABSL_XRAY_LOG_ARGS(N) +#endif + +// ----------------------------------------------------------------------------- +// Variable Attributes +// ----------------------------------------------------------------------------- + +// ABSL_ATTRIBUTE_UNUSED +// +// Prevents 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 + +// ABSL_ATTRIBUTE_INITIAL_EXEC +// +// Tells 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 + +// ABSL_ATTRIBUTE_PACKED +// +// Prevents 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 + +// 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". +// +// Example: +// +// 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) +#define ABSL_CONST_INIT [[clang::require_constant_initialization]] +#else +#define ABSL_CONST_INIT +#endif // ABSL_HAVE_CPP_ATTRIBUTE(clang::require_constant_initialization) + +#endif // ABSL_BASE_ATTRIBUTES_H_ diff --git a/Firestore/third_party/abseil-cpp/absl/base/config.h b/Firestore/third_party/abseil-cpp/absl/base/config.h new file mode 100644 index 0000000..8a44c06 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/config.h @@ -0,0 +1,399 @@ +// +// Copyright 2017 The Abseil Authors. +// +// 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. +// +// ----------------------------------------------------------------------------- +// File: config.h +// ----------------------------------------------------------------------------- +// +// This header file defines a set of macros for checking the presence of +// important compiler and platform features. Such macros can be used to +// produce portable code by parameterizing compilation based on the presence or +// lack of a given feature. +// +// We define a "feature" as some interface we wish to program to: for example, +// a library function or system call. A value of `1` indicates support for +// that feature; any other value indicates the feature support is undefined. +// +// Example: +// +// Suppose a programmer wants to write a program that uses the 'mmap()' system +// call. The Abseil macro for that feature (`ABSL_HAVE_MMAP`) allows you to +// selectively include the `mmap.h` header and bracket code using that feature +// in the macro: +// +// #include "absl/base/config.h" +// +// #ifdef ABSL_HAVE_MMAP +// #include "sys/mman.h" +// #endif //ABSL_HAVE_MMAP +// +// ... +// #ifdef ABSL_HAVE_MMAP +// void *ptr = mmap(...); +// ... +// #endif // ABSL_HAVE_MMAP + +#ifndef ABSL_BASE_CONFIG_H_ +#define ABSL_BASE_CONFIG_H_ + +// Included for the __GLIBC__ macro (or similar macros on other systems). +#include <limits.h> + +#ifdef __cplusplus +// Included for __GLIBCXX__, _LIBCPP_VERSION +#include <cstddef> +#endif // __cplusplus + +#if defined(__APPLE__) +// Included for TARGET_OS_IPHONE, __IPHONE_OS_VERSION_MIN_REQUIRED, +// __IPHONE_8_0. +#include <Availability.h> +#include <TargetConditionals.h> +#endif + +#include "absl/base/policy_checks.h" + +// ----------------------------------------------------------------------------- +// Compiler Feature Checks +// ----------------------------------------------------------------------------- + +// ABSL_HAVE_BUILTIN() +// +// Checks whether the compiler supports a Clang Feature Checking Macro, and if +// so, checks whether it supports the provided builtin function "x" where x +// is one of the functions noted in +// https://clang.llvm.org/docs/LanguageExtensions.html +// +// Note: Use this macro to avoid an extra level of #ifdef __has_builtin check. +// http://releases.llvm.org/3.3/tools/clang/docs/LanguageExtensions.html +#ifdef __has_builtin +#define ABSL_HAVE_BUILTIN(x) __has_builtin(x) +#else +#define ABSL_HAVE_BUILTIN(x) 0 +#endif + +// ABSL_HAVE_TLS is defined to 1 when __thread should be supported. +// We assume __thread is supported on Linux when compiled with Clang or compiled +// against libstdc++ with _GLIBCXX_HAVE_TLS defined. +#ifdef ABSL_HAVE_TLS +#error ABSL_HAVE_TLS cannot be directly set +#elif defined(__linux__) && (defined(__clang__) || defined(_GLIBCXX_HAVE_TLS)) +#define ABSL_HAVE_TLS 1 +#endif + +// ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE +// +// Checks whether `std::is_trivially_destructible<T>` is supported. +// +// Notes: All supported compilers using libc++ support this feature, as does +// gcc >= 4.8.1 using libstdc++, and Visual Studio. +#ifdef ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE +#error ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE cannot be directly set +#elif defined(_LIBCPP_VERSION) || \ + (!defined(__clang__) && defined(__GNUC__) && defined(__GLIBCXX__) && \ + (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))) || \ + defined(_MSC_VER) +#define ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE 1 +#endif + +// ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE +// +// Checks whether `std::is_trivially_default_constructible<T>` and +// `std::is_trivially_copy_constructible<T>` are supported. + +// ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE +// +// Checks whether `std::is_trivially_copy_assignable<T>` is supported. + +// Notes: Clang with libc++ supports these features, as does gcc >= 5.1 with +// either libc++ or libstdc++, and Visual Studio. +#if defined(ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE) +#error ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE cannot be directly set +#elif defined(ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE) +#error ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE cannot directly set +#elif (defined(__clang__) && defined(_LIBCPP_VERSION)) || \ + (!defined(__clang__) && defined(__GNUC__) && \ + (__GNUC__ > 5 || (__GNUC__ == 5 && __GNUC_MINOR__ >= 1)) && \ + (defined(_LIBCPP_VERSION) || defined(__GLIBCXX__))) || \ + defined(_MSC_VER) +#define ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE 1 +#define ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE 1 +#endif + +// ABSL_HAVE_THREAD_LOCAL +// +// Checks whether C++11's `thread_local` storage duration specifier is +// supported. +#ifdef ABSL_HAVE_THREAD_LOCAL +#error ABSL_HAVE_THREAD_LOCAL cannot be directly set +#elif !defined(__apple_build_version__) || \ + ((__apple_build_version__ >= 8000042) && \ + !(TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_9_0)) +// Notes: Xcode's clang did not support `thread_local` until version +// 8, and even then not for all iOS < 9.0. +#define ABSL_HAVE_THREAD_LOCAL 1 +#endif + +// There are platforms for which TLS should not be used even though the compiler +// makes it seem like it's supported (Android NDK < r12b for example). +// This is primarily because of linker problems and toolchain misconfiguration: +// Abseil does not intend to support this indefinitely. Currently, the newest +// toolchain that we intend to support that requires this behavior is the +// r11 NDK - allowing for a 5 year support window on that means this option +// is likely to be removed around June of 2021. +// TLS isn't supported until NDK r12b per +// https://developer.android.com/ndk/downloads/revision_history.html +// Since NDK r16, `__NDK_MAJOR__` and `__NDK_MINOR__` are defined in +// <android/ndk-version.h>. For NDK < r16, users should define these macros, +// e.g. `-D__NDK_MAJOR__=11 -D__NKD_MINOR__=0` for NDK r11. +#if defined(__ANDROID__) && defined(__clang__) +#if __has_include(<android/ndk-version.h>) +#include <android/ndk-version.h> +#endif // __has_include(<android/ndk-version.h>) +#if defined(__ANDROID__) && defined(__clang__) && defined(__NDK_MAJOR__) && \ + defined(__NDK_MINOR__) && \ + ((__NDK_MAJOR__ < 12) || ((__NDK_MAJOR__ == 12) && (__NDK_MINOR__ < 1))) +#undef ABSL_HAVE_TLS +#undef ABSL_HAVE_THREAD_LOCAL +#endif +#endif // defined(__ANDROID__) && defined(__clang__) + +// ABSL_HAVE_INTRINSIC_INT128 +// +// Checks whether the __int128 compiler extension for a 128-bit integral type is +// supported. +// +// Notes: __SIZEOF_INT128__ is defined by Clang and GCC when __int128 is +// supported, except on ppc64 and aarch64 where __int128 exists but has exhibits +// a sporadic compiler crashing bug. Nvidia's nvcc also defines __GNUC__ and +// __SIZEOF_INT128__ but not all versions actually support __int128. +#ifdef ABSL_HAVE_INTRINSIC_INT128 +#error ABSL_HAVE_INTRINSIC_INT128 cannot be directly set +#elif (defined(__clang__) && defined(__SIZEOF_INT128__) && \ + !defined(__aarch64__)) || \ + (defined(__CUDACC__) && defined(__SIZEOF_INT128__) && \ + __CUDACC_VER_MAJOR__ >= 9) || \ + (!defined(__clang__) && !defined(__CUDACC__) && defined(__GNUC__) && \ + defined(__SIZEOF_INT128__)) +#define ABSL_HAVE_INTRINSIC_INT128 1 +// __CUDACC_VER__ is a full version number before CUDA 9, and is defined to a +// std::string explaining that it has been removed starting with CUDA 9. We can't +// compare both variants in a single boolean expression because there is no +// short-circuiting in the preprocessor. +#elif defined(__CUDACC__) && defined(__SIZEOF_INT128__) && \ + __CUDACC_VER__ >= 7000 +#define ABSL_HAVE_INTRINSIC_INT128 1 +#endif + +// ABSL_HAVE_EXCEPTIONS +// +// Checks whether the compiler both supports and enables exceptions. Many +// compilers support a "no exceptions" mode that disables exceptions. +// +// Generally, when ABSL_HAVE_EXCEPTIONS is not defined: +// +// * Code using `throw` and `try` may not compile. +// * The `noexcept` specifier will still compile and behave as normal. +// * The `noexcept` operator may still return `false`. +// +// For further details, consult the compiler's documentation. +#ifdef ABSL_HAVE_EXCEPTIONS +#error ABSL_HAVE_EXCEPTIONS cannot be directly set. + +#elif defined(__clang__) +// TODO(calabrese) +// Switch to using __cpp_exceptions when we no longer support versions < 3.6. +// For details on this check, see: +// http://releases.llvm.org/3.6.0/tools/clang/docs/ReleaseNotes.html#the-exceptions-macro +#if defined(__EXCEPTIONS) && __has_feature(cxx_exceptions) +#define ABSL_HAVE_EXCEPTIONS 1 +#endif // defined(__EXCEPTIONS) && __has_feature(cxx_exceptions) + +// Handle remaining special cases and default to exceptions being supported. +#elif !(defined(__GNUC__) && (__GNUC__ < 5) && !defined(__EXCEPTIONS)) && \ + !(defined(__GNUC__) && (__GNUC__ >= 5) && !defined(__cpp_exceptions)) && \ + !(defined(_MSC_VER) && !defined(_CPPUNWIND)) +#define ABSL_HAVE_EXCEPTIONS 1 +#endif + +// ----------------------------------------------------------------------------- +// Platform Feature Checks +// ----------------------------------------------------------------------------- + +// Currently supported operating systems and associated preprocessor +// symbols: +// +// Linux and Linux-derived __linux__ +// Android __ANDROID__ (implies __linux__) +// Linux (non-Android) __linux__ && !__ANDROID__ +// Darwin (Mac OS X and iOS) __APPLE__ +// Akaros (http://akaros.org) __ros__ +// Windows _WIN32 +// NaCL __native_client__ +// AsmJS __asmjs__ +// Fuschia __Fuchsia__ +// +// Note that since Android defines both __ANDROID__ and __linux__, one +// may probe for either Linux or Android by simply testing for __linux__. + +// ABSL_HAVE_MMAP +// +// Checks whether the platform has an mmap(2) implementation as defined in +// POSIX.1-2001. +#ifdef ABSL_HAVE_MMAP +#error ABSL_HAVE_MMAP cannot be directly set +#elif defined(__linux__) || defined(__APPLE__) || defined(__ros__) || \ + defined(__native_client__) || defined(__asmjs__) || defined(__Fuchsia__) +#define ABSL_HAVE_MMAP 1 +#endif + +// ABSL_HAVE_PTHREAD_GETSCHEDPARAM +// +// Checks whether the platform implements the pthread_(get|set)schedparam(3) +// functions as defined in POSIX.1-2001. +#ifdef ABSL_HAVE_PTHREAD_GETSCHEDPARAM +#error ABSL_HAVE_PTHREAD_GETSCHEDPARAM cannot be directly set +#elif defined(__linux__) || defined(__APPLE__) || defined(__ros__) +#define ABSL_HAVE_PTHREAD_GETSCHEDPARAM 1 +#endif + +// ABSL_HAVE_SCHED_YIELD +// +// Checks whether the platform implements sched_yield(2) as defined in +// POSIX.1-2001. +#ifdef ABSL_HAVE_SCHED_YIELD +#error ABSL_HAVE_SCHED_YIELD cannot be directly set +#elif defined(__linux__) || defined(__ros__) || defined(__native_client__) +#define ABSL_HAVE_SCHED_YIELD 1 +#endif + +// ABSL_HAVE_SEMAPHORE_H +// +// Checks whether the platform supports the <semaphore.h> header and sem_open(3) +// family of functions as standardized in POSIX.1-2001. +// +// Note: While Apple provides <semaphore.h> for both iOS and macOS, it is +// explicity deprecated and will cause build failures if enabled for those +// platforms. We side-step the issue by not defining it here for Apple +// platforms. +#ifdef ABSL_HAVE_SEMAPHORE_H +#error ABSL_HAVE_SEMAPHORE_H cannot be directly set +#elif defined(__linux__) || defined(__ros__) +#define ABSL_HAVE_SEMAPHORE_H 1 +#endif + +// ABSL_HAVE_ALARM +// +// Checks whether the platform supports the <signal.h> header and alarm(2) +// function as standardized in POSIX.1-2001. +#ifdef ABSL_HAVE_ALARM +#error ABSL_HAVE_ALARM cannot be directly set +#elif defined(__GOOGLE_GRTE_VERSION__) +// feature tests for Google's GRTE +#define ABSL_HAVE_ALARM 1 +#elif defined(__GLIBC__) +// feature test for glibc +#define ABSL_HAVE_ALARM 1 +#elif defined(_MSC_VER) +// feature tests for Microsoft's library +#elif defined(__native_client__) +#else +// other standard libraries +#define ABSL_HAVE_ALARM 1 +#endif + +// ABSL_IS_LITTLE_ENDIAN +// ABSL_IS_BIG_ENDIAN +// +// Checks the endianness of the platform. +// +// Notes: uses the built in endian macros provided by GCC (since 4.6) and +// Clang (since 3.2); see +// https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html. +// Otherwise, if _WIN32, assume little endian. Otherwise, bail with an error. +#if defined(ABSL_IS_BIG_ENDIAN) +#error "ABSL_IS_BIG_ENDIAN cannot be directly set." +#endif +#if defined(ABSL_IS_LITTLE_ENDIAN) +#error "ABSL_IS_LITTLE_ENDIAN cannot be directly set." +#endif + +#if (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && \ + __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) +#define ABSL_IS_LITTLE_ENDIAN 1 +#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \ + __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ +#define ABSL_IS_BIG_ENDIAN 1 +#elif defined(_WIN32) +#define ABSL_IS_LITTLE_ENDIAN 1 +#else +#error "absl endian detection needs to be set up for your compiler" +#endif + +// ABSL_HAVE_STD_ANY +// +// Checks whether C++17 std::any is available by checking whether <any> exists. +#ifdef ABSL_HAVE_STD_ANY +#error "ABSL_HAVE_STD_ANY cannot be directly set." +#endif + +#ifdef __has_include +#if __has_include(<any>) && __cplusplus >= 201703L +#define ABSL_HAVE_STD_ANY 1 +#endif +#endif + +// ABSL_HAVE_STD_OPTIONAL +// +// Checks whether C++17 std::optional is available. +#ifdef ABSL_HAVE_STD_OPTIONAL +#error "ABSL_HAVE_STD_OPTIONAL cannot be directly set." +#endif + +#ifdef __has_include +#if __has_include(<optional>) && __cplusplus >= 201703L +#define ABSL_HAVE_STD_OPTIONAL 1 +#endif +#endif + +// ABSL_HAVE_STD_STRING_VIEW +// +// Checks whether C++17 std::string_view is available. +#ifdef ABSL_HAVE_STD_STRING_VIEW +#error "ABSL_HAVE_STD_STRING_VIEW cannot be directly set." +#endif + +#ifdef __has_include +#if __has_include(<string_view>) && __cplusplus >= 201703L +#define ABSL_HAVE_STD_STRING_VIEW 1 +#endif +#endif + +// For MSVC, `__has_include` is supported in VS 2017 15.3, which is later than +// the support for <optional>, <any>, <string_view>. So we use _MSC_VER to check +// whether we have VS 2017 RTM (when <optional>, <any>, <string_view> is +// implemented) or higher. +// Also, `__cplusplus` is not correctly set by MSVC, so we use `_MSVC_LANG` to +// check the language version. +// TODO(zhangxy): fix tests before enabling aliasing for `std::any`, +// `std::string_view`. +#if defined(_MSC_VER) && _MSC_VER >= 1910 && \ + ((defined(_MSVC_LANG) && _MSVC_LANG > 201402) || __cplusplus > 201402) +// #define ABSL_HAVE_STD_ANY 1 +#define ABSL_HAVE_STD_OPTIONAL 1 +// #define ABSL_HAVE_STD_STRING_VIEW 1 +#endif + +#endif // ABSL_BASE_CONFIG_H_ diff --git a/Firestore/third_party/abseil-cpp/absl/base/config_test.cc b/Firestore/third_party/abseil-cpp/absl/base/config_test.cc new file mode 100644 index 0000000..c839712 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/config_test.cc @@ -0,0 +1,60 @@ +// Copyright 2017 The Abseil Authors. +// +// 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. + +#include "absl/base/config.h" + +#include <cstdint> + +#include "gtest/gtest.h" +#include "absl/synchronization/internal/thread_pool.h" + +namespace { + +TEST(ConfigTest, Endianness) { + union { + uint32_t value; + uint8_t data[sizeof(uint32_t)]; + } number; + number.data[0] = 0x00; + number.data[1] = 0x01; + number.data[2] = 0x02; + number.data[3] = 0x03; +#if defined(ABSL_IS_LITTLE_ENDIAN) && defined(ABSL_IS_BIG_ENDIAN) +#error Both ABSL_IS_LITTLE_ENDIAN and ABSL_IS_BIG_ENDIAN are defined +#elif defined(ABSL_IS_LITTLE_ENDIAN) + EXPECT_EQ(UINT32_C(0x03020100), number.value); +#elif defined(ABSL_IS_BIG_ENDIAN) + EXPECT_EQ(UINT32_C(0x00010203), number.value); +#else +#error Unknown endianness +#endif +} + +#if defined(ABSL_HAVE_THREAD_LOCAL) +TEST(ConfigTest, ThreadLocal) { + static thread_local int mine_mine_mine = 16; + EXPECT_EQ(16, mine_mine_mine); + { + absl::synchronization_internal::ThreadPool pool(1); + pool.Schedule([&] { + EXPECT_EQ(16, mine_mine_mine); + mine_mine_mine = 32; + EXPECT_EQ(32, mine_mine_mine); + }); + } + EXPECT_EQ(16, mine_mine_mine); +} +#endif + +} // namespace diff --git a/Firestore/third_party/abseil-cpp/absl/base/dynamic_annotations.cc b/Firestore/third_party/abseil-cpp/absl/base/dynamic_annotations.cc new file mode 100644 index 0000000..08c27e5 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/dynamic_annotations.cc @@ -0,0 +1,129 @@ +// Copyright 2017 The Abseil Authors. +// +// 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. + +#include <stdlib.h> +#include <string.h> + +#include "absl/base/dynamic_annotations.h" + +#ifndef __has_feature +#define __has_feature(x) 0 +#endif + +/* Compiler-based ThreadSanitizer defines + DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL = 1 + and provides its own definitions of the functions. */ + +#ifndef DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL +# define DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL 0 +#endif + +/* Each function is empty and called (via a macro) only in debug mode. + The arguments are captured by dynamic tools at runtime. */ + +#if DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL == 0 && !defined(__native_client__) + +#if __has_feature(memory_sanitizer) +#include <sanitizer/msan_interface.h> +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +void AnnotateRWLockCreate(const char *, int, + const volatile void *){} +void AnnotateRWLockDestroy(const char *, int, + const volatile void *){} +void AnnotateRWLockAcquired(const char *, int, + const volatile void *, long){} +void AnnotateRWLockReleased(const char *, int, + const volatile void *, long){} +void AnnotateBenignRace(const char *, int, + const volatile void *, + const char *){} +void AnnotateBenignRaceSized(const char *, int, + const volatile void *, + size_t, + const char *) {} +void AnnotateThreadName(const char *, int, + const char *){} +void AnnotateIgnoreReadsBegin(const char *, int){} +void AnnotateIgnoreReadsEnd(const char *, int){} +void AnnotateIgnoreWritesBegin(const char *, int){} +void AnnotateIgnoreWritesEnd(const char *, int){} +void AnnotateEnableRaceDetection(const char *, int, int){} +void AnnotateMemoryIsInitialized(const char *, int, + const volatile void *mem, size_t size) { +#if __has_feature(memory_sanitizer) + __msan_unpoison(mem, size); +#else + (void)mem; + (void)size; +#endif +} + +void AnnotateMemoryIsUninitialized(const char *, int, + const volatile void *mem, size_t size) { +#if __has_feature(memory_sanitizer) + __msan_allocated_memory(mem, size); +#else + (void)mem; + (void)size; +#endif +} + +static int GetRunningOnValgrind(void) { +#ifdef RUNNING_ON_VALGRIND + if (RUNNING_ON_VALGRIND) return 1; +#endif + char *running_on_valgrind_str = getenv("RUNNING_ON_VALGRIND"); + if (running_on_valgrind_str) { + return strcmp(running_on_valgrind_str, "0") != 0; + } + return 0; +} + +/* See the comments in dynamic_annotations.h */ +int RunningOnValgrind(void) { + static volatile int running_on_valgrind = -1; + int local_running_on_valgrind = running_on_valgrind; + /* C doesn't have thread-safe initialization of statics, and we + don't want to depend on pthread_once here, so hack it. */ + ANNOTATE_BENIGN_RACE(&running_on_valgrind, "safe hack"); + if (local_running_on_valgrind == -1) + running_on_valgrind = local_running_on_valgrind = GetRunningOnValgrind(); + return local_running_on_valgrind; +} + +/* See the comments in dynamic_annotations.h */ +double ValgrindSlowdown(void) { + /* Same initialization hack as in RunningOnValgrind(). */ + static volatile double slowdown = 0.0; + double local_slowdown = slowdown; + ANNOTATE_BENIGN_RACE(&slowdown, "safe hack"); + if (RunningOnValgrind() == 0) { + return 1.0; + } + if (local_slowdown == 0.0) { + char *env = getenv("VALGRIND_SLOWDOWN"); + slowdown = local_slowdown = env ? atof(env) : 50.0; + } + return local_slowdown; +} + +#ifdef __cplusplus +} // extern "C" +#endif +#endif /* DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL == 0 */ diff --git a/Firestore/third_party/abseil-cpp/absl/base/dynamic_annotations.h b/Firestore/third_party/abseil-cpp/absl/base/dynamic_annotations.h new file mode 100644 index 0000000..3b6d6ef --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/dynamic_annotations.h @@ -0,0 +1,409 @@ +/* + * Copyright 2017 The Abseil Authors. + * + * 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. + */ +/* This file defines dynamic annotations for use with dynamic analysis + tool such as valgrind, PIN, etc. + + Dynamic annotation is a source code annotation that affects + the generated code (that is, the annotation is not a comment). + Each such annotation is attached to a particular + instruction and/or to a particular object (address) in the program. + + The annotations that should be used by users are macros in all upper-case + (e.g., ANNOTATE_THREAD_NAME). + + Actual implementation of these macros may differ depending on the + dynamic analysis tool being used. + + This file supports the following configurations: + - Dynamic Annotations enabled (with static thread-safety warnings disabled). + In this case, macros expand to functions implemented by Thread Sanitizer, + when building with TSan. When not provided an external implementation, + dynamic_annotations.cc provides no-op implementations. + + - Static Clang thread-safety warnings enabled. + When building with a Clang compiler that supports thread-safety warnings, + a subset of annotations can be statically-checked at compile-time. We + expand these macros to static-inline functions that can be analyzed for + thread-safety, but afterwards elided when building the final binary. + + - All annotations are disabled. + If neither Dynamic Annotations nor Clang thread-safety warnings are + enabled, then all annotation-macros expand to empty. */ + +#ifndef ABSL_BASE_DYNAMIC_ANNOTATIONS_H_ +#define ABSL_BASE_DYNAMIC_ANNOTATIONS_H_ + +#ifndef DYNAMIC_ANNOTATIONS_ENABLED +# define DYNAMIC_ANNOTATIONS_ENABLED 0 +#endif + +#if defined(__native_client__) + #include "nacl/dynamic_annotations.h" + + // Stub out the macros missing from the NaCl version. + #ifndef ANNOTATE_CONTIGUOUS_CONTAINER + #define ANNOTATE_CONTIGUOUS_CONTAINER(beg, end, old_mid, new_mid) + #endif + #ifndef ANNOTATE_RWLOCK_CREATE_STATIC + #define ANNOTATE_RWLOCK_CREATE_STATIC(lock) + #endif + #ifndef ADDRESS_SANITIZER_REDZONE + #define ADDRESS_SANITIZER_REDZONE(name) + #endif + #ifndef ANNOTATE_MEMORY_IS_UNINITIALIZED + #define ANNOTATE_MEMORY_IS_UNINITIALIZED(address, size) + #endif + +#else /* !__native_client__ */ + +#if DYNAMIC_ANNOTATIONS_ENABLED != 0 + + /* ------------------------------------------------------------- + Annotations that suppress errors. It is usually better to express the + program's synchronization using the other annotations, but these can + be used when all else fails. */ + + /* Report that we may have a benign race at "pointer", with size + "sizeof(*(pointer))". "pointer" must be a non-void* pointer. Insert at the + point where "pointer" has been allocated, preferably close to the point + where the race happens. See also ANNOTATE_BENIGN_RACE_STATIC. */ + #define ANNOTATE_BENIGN_RACE(pointer, description) \ + AnnotateBenignRaceSized(__FILE__, __LINE__, pointer, \ + sizeof(*(pointer)), description) + + /* Same as ANNOTATE_BENIGN_RACE(address, description), but applies to + the memory range [address, address+size). */ + #define ANNOTATE_BENIGN_RACE_SIZED(address, size, description) \ + AnnotateBenignRaceSized(__FILE__, __LINE__, address, size, description) + + /* Enable (enable!=0) or disable (enable==0) race detection for all threads. + This annotation could be useful if you want to skip expensive race analysis + during some period of program execution, e.g. during initialization. */ + #define ANNOTATE_ENABLE_RACE_DETECTION(enable) \ + AnnotateEnableRaceDetection(__FILE__, __LINE__, enable) + + /* ------------------------------------------------------------- + Annotations useful for debugging. */ + + /* Report the current thread name to a race detector. */ + #define ANNOTATE_THREAD_NAME(name) \ + AnnotateThreadName(__FILE__, __LINE__, name) + + /* ------------------------------------------------------------- + Annotations useful when implementing locks. They are not + normally needed by modules that merely use locks. + The "lock" argument is a pointer to the lock object. */ + + /* Report that a lock has been created at address "lock". */ + #define ANNOTATE_RWLOCK_CREATE(lock) \ + AnnotateRWLockCreate(__FILE__, __LINE__, lock) + + /* Report that a linker initialized lock has been created at address "lock". + */ +#ifdef THREAD_SANITIZER + #define ANNOTATE_RWLOCK_CREATE_STATIC(lock) \ + AnnotateRWLockCreateStatic(__FILE__, __LINE__, lock) +#else + #define ANNOTATE_RWLOCK_CREATE_STATIC(lock) ANNOTATE_RWLOCK_CREATE(lock) +#endif + + /* Report that the lock at address "lock" is about to be destroyed. */ + #define ANNOTATE_RWLOCK_DESTROY(lock) \ + AnnotateRWLockDestroy(__FILE__, __LINE__, lock) + + /* Report that the lock at address "lock" has been acquired. + is_w=1 for writer lock, is_w=0 for reader lock. */ + #define ANNOTATE_RWLOCK_ACQUIRED(lock, is_w) \ + AnnotateRWLockAcquired(__FILE__, __LINE__, lock, is_w) + + /* Report that the lock at address "lock" is about to be released. */ + #define ANNOTATE_RWLOCK_RELEASED(lock, is_w) \ + AnnotateRWLockReleased(__FILE__, __LINE__, lock, is_w) + +#else /* DYNAMIC_ANNOTATIONS_ENABLED == 0 */ + + #define ANNOTATE_RWLOCK_CREATE(lock) /* empty */ + #define ANNOTATE_RWLOCK_CREATE_STATIC(lock) /* empty */ + #define ANNOTATE_RWLOCK_DESTROY(lock) /* empty */ + #define ANNOTATE_RWLOCK_ACQUIRED(lock, is_w) /* empty */ + #define ANNOTATE_RWLOCK_RELEASED(lock, is_w) /* empty */ + #define ANNOTATE_BENIGN_RACE(address, description) /* empty */ + #define ANNOTATE_BENIGN_RACE_SIZED(address, size, description) /* empty */ + #define ANNOTATE_THREAD_NAME(name) /* empty */ + #define ANNOTATE_ENABLE_RACE_DETECTION(enable) /* empty */ + +#endif /* DYNAMIC_ANNOTATIONS_ENABLED */ + +/* These annotations are also made available to LLVM's Memory Sanitizer */ +#if DYNAMIC_ANNOTATIONS_ENABLED == 1 || defined(MEMORY_SANITIZER) + #define ANNOTATE_MEMORY_IS_INITIALIZED(address, size) \ + AnnotateMemoryIsInitialized(__FILE__, __LINE__, address, size) + + #define ANNOTATE_MEMORY_IS_UNINITIALIZED(address, size) \ + AnnotateMemoryIsUninitialized(__FILE__, __LINE__, address, size) +#else + #define ANNOTATE_MEMORY_IS_INITIALIZED(address, size) /* empty */ + #define ANNOTATE_MEMORY_IS_UNINITIALIZED(address, size) /* empty */ +#endif /* DYNAMIC_ANNOTATIONS_ENABLED || MEMORY_SANITIZER */ +/* TODO(delesley) -- Replace __CLANG_SUPPORT_DYN_ANNOTATION__ with the + appropriate feature ID. */ +#if defined(__clang__) && (!defined(SWIG)) \ + && defined(__CLANG_SUPPORT_DYN_ANNOTATION__) + + #if DYNAMIC_ANNOTATIONS_ENABLED == 0 + #define ANNOTALYSIS_ENABLED + #endif + + /* When running in opt-mode, GCC will issue a warning, if these attributes are + compiled. Only include them when compiling using Clang. */ + #define ATTRIBUTE_IGNORE_READS_BEGIN \ + __attribute((exclusive_lock_function("*"))) + #define ATTRIBUTE_IGNORE_READS_END \ + __attribute((unlock_function("*"))) +#else + #define ATTRIBUTE_IGNORE_READS_BEGIN /* empty */ + #define ATTRIBUTE_IGNORE_READS_END /* empty */ +#endif /* defined(__clang__) && ... */ + +#if (DYNAMIC_ANNOTATIONS_ENABLED != 0) || defined(ANNOTALYSIS_ENABLED) + #define ANNOTATIONS_ENABLED +#endif + +#if (DYNAMIC_ANNOTATIONS_ENABLED != 0) + + /* Request the analysis tool to ignore all reads in the current thread + until ANNOTATE_IGNORE_READS_END is called. + Useful to ignore intentional racey reads, while still checking + other reads and all writes. + See also ANNOTATE_UNPROTECTED_READ. */ + #define ANNOTATE_IGNORE_READS_BEGIN() \ + AnnotateIgnoreReadsBegin(__FILE__, __LINE__) + + /* Stop ignoring reads. */ + #define ANNOTATE_IGNORE_READS_END() \ + AnnotateIgnoreReadsEnd(__FILE__, __LINE__) + + /* Similar to ANNOTATE_IGNORE_READS_BEGIN, but ignore writes instead. */ + #define ANNOTATE_IGNORE_WRITES_BEGIN() \ + AnnotateIgnoreWritesBegin(__FILE__, __LINE__) + + /* Stop ignoring writes. */ + #define ANNOTATE_IGNORE_WRITES_END() \ + AnnotateIgnoreWritesEnd(__FILE__, __LINE__) + +/* Clang provides limited support for static thread-safety analysis + through a feature called Annotalysis. We configure macro-definitions + according to whether Annotalysis support is available. */ +#elif defined(ANNOTALYSIS_ENABLED) + + #define ANNOTATE_IGNORE_READS_BEGIN() \ + StaticAnnotateIgnoreReadsBegin(__FILE__, __LINE__) + + #define ANNOTATE_IGNORE_READS_END() \ + StaticAnnotateIgnoreReadsEnd(__FILE__, __LINE__) + + #define ANNOTATE_IGNORE_WRITES_BEGIN() \ + StaticAnnotateIgnoreWritesBegin(__FILE__, __LINE__) + + #define ANNOTATE_IGNORE_WRITES_END() \ + StaticAnnotateIgnoreWritesEnd(__FILE__, __LINE__) + +#else + #define ANNOTATE_IGNORE_READS_BEGIN() /* empty */ + #define ANNOTATE_IGNORE_READS_END() /* empty */ + #define ANNOTATE_IGNORE_WRITES_BEGIN() /* empty */ + #define ANNOTATE_IGNORE_WRITES_END() /* empty */ +#endif + +/* Implement the ANNOTATE_IGNORE_READS_AND_WRITES_* annotations using the more + primitive annotations defined above. */ +#if defined(ANNOTATIONS_ENABLED) + + /* Start ignoring all memory accesses (both reads and writes). */ + #define ANNOTATE_IGNORE_READS_AND_WRITES_BEGIN() \ + do { \ + ANNOTATE_IGNORE_READS_BEGIN(); \ + ANNOTATE_IGNORE_WRITES_BEGIN(); \ + }while (0) + + /* Stop ignoring both reads and writes. */ + #define ANNOTATE_IGNORE_READS_AND_WRITES_END() \ + do { \ + ANNOTATE_IGNORE_WRITES_END(); \ + ANNOTATE_IGNORE_READS_END(); \ + }while (0) + +#else + #define ANNOTATE_IGNORE_READS_AND_WRITES_BEGIN() /* empty */ + #define ANNOTATE_IGNORE_READS_AND_WRITES_END() /* empty */ +#endif + +/* Use the macros above rather than using these functions directly. */ +#include <stddef.h> +#ifdef __cplusplus +extern "C" { +#endif +void AnnotateRWLockCreate(const char *file, int line, + const volatile void *lock); +void AnnotateRWLockCreateStatic(const char *file, int line, + const volatile void *lock); +void AnnotateRWLockDestroy(const char *file, int line, + const volatile void *lock); +void AnnotateRWLockAcquired(const char *file, int line, + const volatile void *lock, long is_w); /* NOLINT */ +void AnnotateRWLockReleased(const char *file, int line, + const volatile void *lock, long is_w); /* NOLINT */ +void AnnotateBenignRace(const char *file, int line, + const volatile void *address, + const char *description); +void AnnotateBenignRaceSized(const char *file, int line, + const volatile void *address, + size_t size, + const char *description); +void AnnotateThreadName(const char *file, int line, + const char *name); +void AnnotateEnableRaceDetection(const char *file, int line, int enable); +void AnnotateMemoryIsInitialized(const char *file, int line, + const volatile void *mem, size_t size); +void AnnotateMemoryIsUninitialized(const char *file, int line, + const volatile void *mem, size_t size); + +/* Annotations expand to these functions, when Dynamic Annotations are enabled. + These functions are either implemented as no-op calls, if no Sanitizer is + attached, or provided with externally-linked implementations by a library + like ThreadSanitizer. */ +void AnnotateIgnoreReadsBegin(const char *file, int line) + ATTRIBUTE_IGNORE_READS_BEGIN; +void AnnotateIgnoreReadsEnd(const char *file, int line) + ATTRIBUTE_IGNORE_READS_END; +void AnnotateIgnoreWritesBegin(const char *file, int line); +void AnnotateIgnoreWritesEnd(const char *file, int line); + +#if defined(ANNOTALYSIS_ENABLED) +/* When Annotalysis is enabled without Dynamic Annotations, the use of + static-inline functions allows the annotations to be read at compile-time, + while still letting the compiler elide the functions from the final build. + + TODO(delesley) -- The exclusive lock here ignores writes as well, but + allows IGNORE_READS_AND_WRITES to work properly. */ +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wunused-function" +static inline void StaticAnnotateIgnoreReadsBegin(const char *file, int line) + ATTRIBUTE_IGNORE_READS_BEGIN { (void)file; (void)line; } +static inline void StaticAnnotateIgnoreReadsEnd(const char *file, int line) + ATTRIBUTE_IGNORE_READS_END { (void)file; (void)line; } +static inline void StaticAnnotateIgnoreWritesBegin( + const char *file, int line) { (void)file; (void)line; } +static inline void StaticAnnotateIgnoreWritesEnd( + const char *file, int line) { (void)file; (void)line; } +#pragma GCC diagnostic pop +#endif + +/* Return non-zero value if running under valgrind. + + If "valgrind.h" is included into dynamic_annotations.cc, + the regular valgrind mechanism will be used. + See http://valgrind.org/docs/manual/manual-core-adv.html about + RUNNING_ON_VALGRIND and other valgrind "client requests". + The file "valgrind.h" may be obtained by doing + svn co svn://svn.valgrind.org/valgrind/trunk/include + + If for some reason you can't use "valgrind.h" or want to fake valgrind, + there are two ways to make this function return non-zero: + - Use environment variable: export RUNNING_ON_VALGRIND=1 + - Make your tool intercept the function RunningOnValgrind() and + change its return value. + */ +int RunningOnValgrind(void); + +/* ValgrindSlowdown returns: + * 1.0, if (RunningOnValgrind() == 0) + * 50.0, if (RunningOnValgrind() != 0 && getenv("VALGRIND_SLOWDOWN") == NULL) + * atof(getenv("VALGRIND_SLOWDOWN")) otherwise + This function can be used to scale timeout values: + EXAMPLE: + for (;;) { + DoExpensiveBackgroundTask(); + SleepForSeconds(5 * ValgrindSlowdown()); + } + */ +double ValgrindSlowdown(void); + +#ifdef __cplusplus +} +#endif + +/* ANNOTATE_UNPROTECTED_READ is the preferred way to annotate racey reads. + + Instead of doing + ANNOTATE_IGNORE_READS_BEGIN(); + ... = x; + ANNOTATE_IGNORE_READS_END(); + one can use + ... = ANNOTATE_UNPROTECTED_READ(x); */ +#if defined(__cplusplus) && defined(ANNOTATIONS_ENABLED) +template <typename T> +inline T ANNOTATE_UNPROTECTED_READ(const volatile T &x) { /* NOLINT */ + ANNOTATE_IGNORE_READS_BEGIN(); + T res = x; + ANNOTATE_IGNORE_READS_END(); + return res; + } +#else + #define ANNOTATE_UNPROTECTED_READ(x) (x) +#endif + +#if DYNAMIC_ANNOTATIONS_ENABLED != 0 && defined(__cplusplus) + /* Apply ANNOTATE_BENIGN_RACE_SIZED to a static variable. */ + #define ANNOTATE_BENIGN_RACE_STATIC(static_var, description) \ + namespace { \ + class static_var ## _annotator { \ + public: \ + static_var ## _annotator() { \ + ANNOTATE_BENIGN_RACE_SIZED(&static_var, \ + sizeof(static_var), \ + # static_var ": " description); \ + } \ + }; \ + static static_var ## _annotator the ## static_var ## _annotator;\ + } // namespace +#else /* DYNAMIC_ANNOTATIONS_ENABLED == 0 */ + #define ANNOTATE_BENIGN_RACE_STATIC(static_var, description) /* empty */ +#endif /* DYNAMIC_ANNOTATIONS_ENABLED */ + +#ifdef ADDRESS_SANITIZER +/* Describe the current state of a contiguous container such as e.g. + * std::vector or std::string. For more details see + * sanitizer/common_interface_defs.h, which is provided by the compiler. */ +#include <sanitizer/common_interface_defs.h> +#define ANNOTATE_CONTIGUOUS_CONTAINER(beg, end, old_mid, new_mid) \ + __sanitizer_annotate_contiguous_container(beg, end, old_mid, new_mid) +#define ADDRESS_SANITIZER_REDZONE(name) \ + struct { char x[8] __attribute__ ((aligned (8))); } name +#else +#define ANNOTATE_CONTIGUOUS_CONTAINER(beg, end, old_mid, new_mid) +#define ADDRESS_SANITIZER_REDZONE(name) +#endif // ADDRESS_SANITIZER + +/* Undefine the macros intended only in this file. */ +#undef ANNOTALYSIS_ENABLED +#undef ANNOTATIONS_ENABLED +#undef ATTRIBUTE_IGNORE_READS_BEGIN +#undef ATTRIBUTE_IGNORE_READS_END + +#endif /* !__native_client__ */ + +#endif /* ABSL_BASE_DYNAMIC_ANNOTATIONS_H_ */ diff --git a/Firestore/third_party/abseil-cpp/absl/base/internal/atomic_hook.h b/Firestore/third_party/abseil-cpp/absl/base/internal/atomic_hook.h new file mode 100644 index 0000000..47d4013 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/internal/atomic_hook.h @@ -0,0 +1,150 @@ +// Copyright 2017 The Abseil Authors. +// +// 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. +// + +#ifndef ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_ +#define ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_ + +#include <atomic> +#include <cassert> +#include <cstdint> +#include <utility> + +namespace absl { +namespace base_internal { + +template <typename T> +class AtomicHook; + +// AtomicHook is a helper class, templatized on a raw function pointer type, for +// implementing Abseil customization hooks. It is a callable object that +// dispatches to the registered hook, or performs a no-op (and returns a default +// constructed object) if no hook has been registered. +// +// Reads and writes guarantee memory_order_acquire/memory_order_release +// semantics. +template <typename ReturnType, typename... Args> +class AtomicHook<ReturnType (*)(Args...)> { + public: + using FnPtr = ReturnType (*)(Args...); + + constexpr AtomicHook() : hook_(kInitialValue) {} + + // Stores the provided function pointer as the value for this hook. + // + // This is intended to be called once. Multiple calls are legal only if the + // same function pointer is provided for each call. The store is implemented + // as a memory_order_release operation, and read accesses are implemented as + // memory_order_acquire. + void Store(FnPtr fn) { + bool success = DoStore(fn); + static_cast<void>(success); + assert(success); + } + + // Invokes the registered callback. If no callback has yet been registered, a + // default-constructed object of the appropriate type is returned instead. + template <typename... CallArgs> + ReturnType operator()(CallArgs&&... args) const { + return DoLoad()(std::forward<CallArgs>(args)...); + } + + // Returns the registered callback, or nullptr if none has been registered. + // Useful if client code needs to conditionalize behavior based on whether a + // callback was registered. + // + // Note that atomic_hook.Load()() and atomic_hook() have different semantics: + // operator()() will perform a no-op if no callback was registered, while + // Load()() will dereference a null function pointer. Prefer operator()() to + // Load()() unless you must conditionalize behavior on whether a hook was + // registered. + FnPtr Load() const { + FnPtr ptr = DoLoad(); + return (ptr == DummyFunction) ? nullptr : ptr; + } + + private: + static ReturnType DummyFunction(Args...) { + return ReturnType(); + } + + // Current versions of MSVC (as of September 2017) have a broken + // implementation of std::atomic<T*>: Its constructor attempts to do the + // equivalent of a reinterpret_cast in a constexpr context, which is not + // allowed. + // + // This causes an issue when building with LLVM under Windows. To avoid this, + // we use a less-efficient, intptr_t-based implementation on Windows. + +#ifdef _MSC_FULL_VER +#define ABSL_HAVE_WORKING_ATOMIC_POINTER 0 +#else +#define ABSL_HAVE_WORKING_ATOMIC_POINTER 1 +#endif + +#if ABSL_HAVE_WORKING_ATOMIC_POINTER + static constexpr FnPtr kInitialValue = &DummyFunction; + + // Return the stored value, or DummyFunction if no value has been stored. + FnPtr DoLoad() const { return hook_.load(std::memory_order_acquire); } + + // Store the given value. Returns false if a different value was already + // stored to this object. + bool DoStore(FnPtr fn) { + assert(fn); + FnPtr expected = DummyFunction; + hook_.compare_exchange_strong(expected, fn, std::memory_order_acq_rel, + std::memory_order_acquire); + const bool store_succeeded = (expected == DummyFunction); + const bool same_value_already_stored = (expected == fn); + return store_succeeded || same_value_already_stored; + } + + std::atomic<FnPtr> hook_; +#else // !ABSL_HAVE_WORKING_ATOMIC_POINTER + // Use a sentinel value unlikely to be the address of an actual function. + static constexpr intptr_t kInitialValue = 0; + + static_assert(sizeof(intptr_t) >= sizeof(FnPtr), + "intptr_t can't contain a function pointer"); + + FnPtr DoLoad() const { + const intptr_t value = hook_.load(std::memory_order_acquire); + if (value == 0) { + return DummyFunction; + } + return reinterpret_cast<FnPtr>(value); + } + + bool DoStore(FnPtr fn) { + assert(fn); + const auto value = reinterpret_cast<intptr_t>(fn); + intptr_t expected = 0; + hook_.compare_exchange_strong(expected, value, std::memory_order_acq_rel, + std::memory_order_acquire); + const bool store_succeeded = (expected == 0); + const bool same_value_already_stored = (expected == value); + return store_succeeded || same_value_already_stored; + } + + std::atomic<intptr_t> hook_; +#endif +}; + +#undef ABSL_HAVE_WORKING_ATOMIC_POINTER + +} // namespace base_internal +} // namespace absl + +#endif // ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_ diff --git a/Firestore/third_party/abseil-cpp/absl/base/internal/log_severity.h b/Firestore/third_party/abseil-cpp/absl/base/internal/log_severity.h new file mode 100644 index 0000000..deaf6a5 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/internal/log_severity.h @@ -0,0 +1,52 @@ +// Copyright 2017 The Abseil Authors. +// +// 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. +// + +#ifndef ABSL_BASE_INTERNAL_LOG_SEVERITY_H_ +#define ABSL_BASE_INTERNAL_LOG_SEVERITY_H_ + +#include "absl/base/attributes.h" + +namespace absl { + +enum class LogSeverity : int { + kInfo = 0, + kWarning = 1, + kError = 2, + kFatal = 3, +}; + +constexpr const char* LogSeverityName(absl::LogSeverity s) { + return s == absl::LogSeverity::kInfo + ? "INFO" + : s == absl::LogSeverity::kWarning + ? "WARNING" + : s == absl::LogSeverity::kError + ? "ERROR" + : s == absl::LogSeverity::kFatal ? "FATAL" : "UNKNOWN"; +} + +// Note that out-of-range large severities normalize to kError, not kFatal. +constexpr absl::LogSeverity NormalizeLogSeverity(absl::LogSeverity s) { + return s < absl::LogSeverity::kInfo + ? absl::LogSeverity::kInfo + : s > absl::LogSeverity::kFatal ? absl::LogSeverity::kError : s; +} +constexpr absl::LogSeverity NormalizeLogSeverity(int s) { + return NormalizeLogSeverity(static_cast<absl::LogSeverity>(s)); +} + +} // namespace absl + +#endif // ABSL_BASE_INTERNAL_LOG_SEVERITY_H_ diff --git a/Firestore/third_party/abseil-cpp/absl/base/internal/raw_logging.cc b/Firestore/third_party/abseil-cpp/absl/base/internal/raw_logging.cc new file mode 100644 index 0000000..1b849ab --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/internal/raw_logging.cc @@ -0,0 +1,222 @@ +// Copyright 2017 The Abseil Authors. +// +// 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. + +#include "absl/base/internal/raw_logging.h" + +#include <stddef.h> +#include <cstdarg> +#include <cstdio> +#include <cstdlib> +#include <cstring> + +#include "absl/base/config.h" +#include "absl/base/internal/atomic_hook.h" +#include "absl/base/internal/log_severity.h" + +// We know how to perform low-level writes to stderr in POSIX and Windows. For +// these platforms, we define the token ABSL_LOW_LEVEL_WRITE_SUPPORTED. +// Much of raw_logging.cc becomes a no-op when we can't output messages, +// although a FATAL ABSL_RAW_LOG message will still abort the process. + +// ABSL_HAVE_POSIX_WRITE is defined when the platform provides posix write() +// (as from unistd.h) +// +// This preprocessor token is also defined in raw_io.cc. If you need to copy +// this, consider moving both to config.h instead. +#if defined(__linux__) || defined(__APPLE__) || defined(__Fuchsia__) +#include <unistd.h> + + +#define ABSL_HAVE_POSIX_WRITE 1 +#define ABSL_LOW_LEVEL_WRITE_SUPPORTED 1 +#else +#undef ABSL_HAVE_POSIX_WRITE +#endif + +// ABSL_HAVE_SYSCALL_WRITE is defined when the platform provides the syscall +// syscall(SYS_write, /*int*/ fd, /*char* */ buf, /*size_t*/ len); +// for low level operations that want to avoid libc. +#if defined(__linux__) && !defined(__ANDROID__) +#include <sys/syscall.h> +#define ABSL_HAVE_SYSCALL_WRITE 1 +#define ABSL_LOW_LEVEL_WRITE_SUPPORTED 1 +#else +#undef ABSL_HAVE_SYSCALL_WRITE +#endif + +#ifdef _WIN32 +#include <io.h> + +#define ABSL_HAVE_RAW_IO 1 +#define ABSL_LOW_LEVEL_WRITE_SUPPORTED 1 +#else +#undef ABSL_HAVE_RAW_IO +#endif + +// TODO(gfalcon): We want raw-logging to work on as many platforms as possible. +// Explicitly #error out when not ABSL_LOW_LEVEL_WRITE_SUPPORTED, except for a +// whitelisted set of platforms for which we expect not to be able to raw log. + +ABSL_CONST_INIT static absl::base_internal::AtomicHook< + absl::raw_logging_internal::LogPrefixHook> log_prefix_hook; +ABSL_CONST_INIT static absl::base_internal::AtomicHook< + absl::raw_logging_internal::AbortHook> abort_hook; + +#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED +static const char kTruncated[] = " ... (message truncated)\n"; + +// sprintf the format to the buffer, adjusting *buf and *size to reflect the +// consumed bytes, and return whether the message fit without truncation. If +// truncation occurred, if possible leave room in the buffer for the message +// kTruncated[]. +inline static bool VADoRawLog(char** buf, int* size, + const char* format, va_list ap) { + int n = vsnprintf(*buf, *size, format, ap); + bool result = true; + if (n < 0 || n > *size) { + result = false; + if (static_cast<size_t>(*size) > sizeof(kTruncated)) { + n = *size - sizeof(kTruncated); // room for truncation message + } else { + n = 0; // no room for truncation message + } + } + *size -= n; + *buf += n; + return result; +} +#endif // ABSL_LOW_LEVEL_WRITE_SUPPORTED + +static constexpr int kLogBufSize = 3000; + +namespace absl { +namespace raw_logging_internal { +void SafeWriteToStderr(const char *s, size_t len); +} // namespace raw_logging_internal +} // namespace absl + +namespace { + +// CAVEAT: vsnprintf called from *DoRawLog below has some (exotic) code paths +// that invoke malloc() and getenv() that might acquire some locks. + +// Helper for RawLog below. +// *DoRawLog writes to *buf of *size and move them past the written portion. +// It returns true iff there was no overflow or error. +bool DoRawLog(char** buf, int* size, const char* format, ...) + ABSL_PRINTF_ATTRIBUTE(3, 4); +bool DoRawLog(char** buf, int* size, const char* format, ...) { + va_list ap; + va_start(ap, format); + int n = vsnprintf(*buf, *size, format, ap); + va_end(ap); + if (n < 0 || n > *size) return false; + *size -= n; + *buf += n; + return true; +} + +void RawLogVA(absl::LogSeverity severity, const char* file, int line, + const char* format, va_list ap) { + char buffer[kLogBufSize]; + char* buf = buffer; + int size = sizeof(buffer); +#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED + bool enabled = true; +#else + bool enabled = false; +#endif + +#ifdef ABSL_MIN_LOG_LEVEL + if (static_cast<int>(severity) < ABSL_MIN_LOG_LEVEL && + severity < absl::LogSeverity::kFatal) { + enabled = false; + } +#endif + + auto log_prefix_hook_ptr = log_prefix_hook.Load(); + if (log_prefix_hook_ptr) { + enabled = log_prefix_hook_ptr(severity, file, line, &buf, &size); + } else { + if (enabled) { + DoRawLog(&buf, &size, "[%s : %d] RAW: ", file, line); + } + } + const char* const prefix_end = buf; + +#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED + if (enabled) { + bool no_chop = VADoRawLog(&buf, &size, format, ap); + if (no_chop) { + DoRawLog(&buf, &size, "\n"); + } else { + DoRawLog(&buf, &size, "%s", kTruncated); + } + absl::raw_logging_internal::SafeWriteToStderr(buffer, strlen(buffer)); + } +#else + static_cast<void>(format); + static_cast<void>(ap); +#endif + + // Abort the process after logging a FATAL message, even if the output itself + // was suppressed. + if (severity == absl::LogSeverity::kFatal) { + abort_hook(file, line, buffer, prefix_end, buffer + kLogBufSize); + abort(); + } +} + +} // namespace + +namespace absl { +namespace raw_logging_internal { + +// Writes the provided buffer directly to stderr, in a safe, low-level manner. +// +// In POSIX this means calling write(), which is async-signal safe and does +// not malloc. If the platform supports the SYS_write syscall, we invoke that +// directly to side-step any libc interception. +void SafeWriteToStderr(const char *s, size_t len) { +#if defined(ABSL_HAVE_SYSCALL_WRITE) + syscall(SYS_write, STDERR_FILENO, s, len); +#elif defined(ABSL_HAVE_POSIX_WRITE) + write(STDERR_FILENO, s, len); +#elif defined(ABSL_HAVE_RAW_IO) + _write(/* stderr */ 2, s, len); +#else + // stderr logging unsupported on this platform + (void) s; + (void) len; +#endif +} + +void RawLog(absl::LogSeverity severity, const char* file, int line, + const char* format, ...) { + va_list ap; + va_start(ap, format); + RawLogVA(severity, file, line, format, ap); + va_end(ap); +} + +bool RawLoggingFullySupported() { +#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED + return true; +#else // !ABSL_LOW_LEVEL_WRITE_SUPPORTED + return false; +#endif // !ABSL_LOW_LEVEL_WRITE_SUPPORTED +} + +} // namespace raw_logging_internal +} // namespace absl diff --git a/Firestore/third_party/abseil-cpp/absl/base/internal/raw_logging.h b/Firestore/third_party/abseil-cpp/absl/base/internal/raw_logging.h new file mode 100644 index 0000000..568d2af --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/internal/raw_logging.h @@ -0,0 +1,130 @@ +// Copyright 2017 The Abseil Authors. +// +// 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. +// +// Thread-safe logging routines that do not allocate any memory or +// acquire any locks, and can therefore be used by low-level memory +// allocation, synchronization, and signal-handling code. + +#ifndef ABSL_BASE_INTERNAL_RAW_LOGGING_H_ +#define ABSL_BASE_INTERNAL_RAW_LOGGING_H_ + +#include "absl/base/attributes.h" +#include "absl/base/internal/log_severity.h" +#include "absl/base/macros.h" +#include "absl/base/port.h" + +// This is similar to LOG(severity) << format..., but +// * it is to be used ONLY by low-level modules that can't use normal LOG() +// * it is designed to be a low-level logger that does not allocate any +// memory and does not need any locks, hence: +// * it logs straight and ONLY to STDERR w/o buffering +// * it uses an explicit printf-format and arguments list +// * it will silently chop off really long message strings +// Usage example: +// ABSL_RAW_LOG(ERROR, "Failed foo with %i: %s", status, error); +// This will print an almost standard log line like this to stderr only: +// E0821 211317 file.cc:123] RAW: Failed foo with 22: bad_file +#define ABSL_RAW_LOG(severity, ...) \ + do { \ + constexpr const char* absl_raw_logging_internal_basename = \ + ::absl::raw_logging_internal::Basename(__FILE__, \ + sizeof(__FILE__) - 1); \ + ::absl::raw_logging_internal::RawLog(ABSL_RAW_LOGGING_INTERNAL_##severity, \ + absl_raw_logging_internal_basename, \ + __LINE__, __VA_ARGS__); \ + } while (0) + +// Similar to CHECK(condition) << message, but for low-level modules: +// we use only ABSL_RAW_LOG that does not allocate memory. +// We do not want to provide args list here to encourage this usage: +// if (!cond) ABSL_RAW_LOG(FATAL, "foo ...", hard_to_compute_args); +// so that the args are not computed when not needed. +#define ABSL_RAW_CHECK(condition, message) \ + do { \ + if (ABSL_PREDICT_FALSE(!(condition))) { \ + ABSL_RAW_LOG(FATAL, "Check %s failed: %s", #condition, message); \ + } \ + } while (0) + +#define ABSL_RAW_LOGGING_INTERNAL_INFO ::absl::LogSeverity::kInfo +#define ABSL_RAW_LOGGING_INTERNAL_WARNING ::absl::LogSeverity::kWarning +#define ABSL_RAW_LOGGING_INTERNAL_ERROR ::absl::LogSeverity::kError +#define ABSL_RAW_LOGGING_INTERNAL_FATAL ::absl::LogSeverity::kFatal +#define ABSL_RAW_LOGGING_INTERNAL_LEVEL(severity) \ + ::absl::NormalizeLogSeverity(severity) + +namespace absl { +namespace raw_logging_internal { + +// Helper function to implement ABSL_RAW_LOG +// Logs format... at "severity" level, reporting it +// as called from file:line. +// This does not allocate memory or acquire locks. +void RawLog(absl::LogSeverity severity, const char* file, int line, + const char* format, ...) ABSL_PRINTF_ATTRIBUTE(4, 5); + +// compile-time function to get the "base" filename, that is, the part of +// a filename after the last "/" or "\" path separator. The search starts at +// the end of the std::string; the second parameter is the length of the std::string. +constexpr const char* Basename(const char* fname, int offset) { + return offset == 0 || fname[offset - 1] == '/' || fname[offset - 1] == '\\' + ? fname + offset + : Basename(fname, offset - 1); +} + +// For testing only. +// Returns true if raw logging is fully supported. When it is not +// fully supported, no messages will be emitted, but a log at FATAL +// severity will cause an abort. +// +// TODO(gfalcon): Come up with a better name for this method. +bool RawLoggingFullySupported(); + +// Function type for a raw_logging customization hook for suppressing messages +// by severity, and for writing custom prefixes on non-suppressed messages. +// +// The installed hook is called for every raw log invocation. The message will +// be logged to stderr only if the hook returns true. FATAL errors will cause +// the process to abort, even if writing to stderr is suppressed. The hook is +// also provided with an output buffer, where it can write a custom log message +// prefix. +// +// The raw_logging system does not allocate memory or grab locks. User-provided +// hooks must avoid these operations, and must not throw exceptions. +// +// 'severity' is the severity level of the message being written. +// 'file' and 'line' are the file and line number where the ABSL_RAW_LOG macro +// was located. +// 'buffer' and 'buf_size' are pointers to the buffer and buffer size. If the +// hook writes a prefix, it must increment *buffer and decrement *buf_size +// accordingly. +using LogPrefixHook = bool (*)(absl::LogSeverity severity, const char* file, + int line, char** buffer, int* buf_size); + +// Function type for a raw_logging customization hook called to abort a process +// when a FATAL message is logged. If the provided AbortHook() returns, the +// logging system will call abort(). +// +// 'file' and 'line' are the file and line number where the ABSL_RAW_LOG macro +// was located. +// The null-terminated logged message lives in the buffer between 'buf_start' +// and 'buf_end'. 'prefix_end' points to the first non-prefix character of the +// buffer (as written by the LogPrefixHook.) +using AbortHook = void (*)(const char* file, int line, const char* buf_start, + const char* prefix_end, const char* buf_end); + +} // namespace raw_logging_internal +} // namespace absl + +#endif // ABSL_BASE_INTERNAL_RAW_LOGGING_H_ diff --git a/Firestore/third_party/abseil-cpp/absl/base/internal/throw_delegate.cc b/Firestore/third_party/abseil-cpp/absl/base/internal/throw_delegate.cc new file mode 100644 index 0000000..46dc573 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/internal/throw_delegate.cc @@ -0,0 +1,106 @@ +// Copyright 2017 The Abseil Authors. +// +// 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. + +#include "absl/base/internal/throw_delegate.h" + +#include <cstdlib> +#include <functional> +#include <new> +#include <stdexcept> +#include "absl/base/config.h" +#include "absl/base/internal/raw_logging.h" + +namespace absl { +namespace base_internal { + +namespace { +template <typename T> +[[noreturn]] void Throw(const T& error) { +#ifdef ABSL_HAVE_EXCEPTIONS + throw error; +#else + ABSL_RAW_LOG(ERROR, "%s", error.what()); + abort(); +#endif +} +} // namespace + +void ThrowStdLogicError(const std::string& what_arg) { + Throw(std::logic_error(what_arg)); +} +void ThrowStdLogicError(const char* what_arg) { + Throw(std::logic_error(what_arg)); +} +void ThrowStdInvalidArgument(const std::string& what_arg) { + Throw(std::invalid_argument(what_arg)); +} +void ThrowStdInvalidArgument(const char* what_arg) { + Throw(std::invalid_argument(what_arg)); +} + +void ThrowStdDomainError(const std::string& what_arg) { + Throw(std::domain_error(what_arg)); +} +void ThrowStdDomainError(const char* what_arg) { + Throw(std::domain_error(what_arg)); +} + +void ThrowStdLengthError(const std::string& what_arg) { + Throw(std::length_error(what_arg)); +} +void ThrowStdLengthError(const char* what_arg) { + Throw(std::length_error(what_arg)); +} + +void ThrowStdOutOfRange(const std::string& what_arg) { + Throw(std::out_of_range(what_arg)); +} +void ThrowStdOutOfRange(const char* what_arg) { + Throw(std::out_of_range(what_arg)); +} + +void ThrowStdRuntimeError(const std::string& what_arg) { + Throw(std::runtime_error(what_arg)); +} +void ThrowStdRuntimeError(const char* what_arg) { + Throw(std::runtime_error(what_arg)); +} + +void ThrowStdRangeError(const std::string& what_arg) { + Throw(std::range_error(what_arg)); +} +void ThrowStdRangeError(const char* what_arg) { + Throw(std::range_error(what_arg)); +} + +void ThrowStdOverflowError(const std::string& what_arg) { + Throw(std::overflow_error(what_arg)); +} +void ThrowStdOverflowError(const char* what_arg) { + Throw(std::overflow_error(what_arg)); +} + +void ThrowStdUnderflowError(const std::string& what_arg) { + Throw(std::underflow_error(what_arg)); +} +void ThrowStdUnderflowError(const char* what_arg) { + Throw(std::underflow_error(what_arg)); +} + +void ThrowStdBadFunctionCall() { Throw(std::bad_function_call()); } + +void ThrowStdBadAlloc() { Throw(std::bad_alloc()); } + +} // namespace base_internal +} // namespace absl diff --git a/Firestore/third_party/abseil-cpp/absl/base/internal/throw_delegate.h b/Firestore/third_party/abseil-cpp/absl/base/internal/throw_delegate.h new file mode 100644 index 0000000..70e2d77 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/internal/throw_delegate.h @@ -0,0 +1,71 @@ +// +// Copyright 2017 The Abseil Authors. +// +// 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. +// + +#ifndef ABSL_BASE_INTERNAL_THROW_DELEGATE_H_ +#define ABSL_BASE_INTERNAL_THROW_DELEGATE_H_ + +#include <string> + +namespace absl { +namespace base_internal { + +// Helper functions that allow throwing exceptions consistently from anywhere. +// The main use case is for header-based libraries (eg templates), as they will +// be built by many different targets with their own compiler options. +// In particular, this will allow a safe way to throw exceptions even if the +// caller is compiled with -fno-exceptions. This is intended for implementing +// things like map<>::at(), which the standard documents as throwing an +// exception on error. +// +// Using other techniques like #if tricks could lead to ODR violations. +// +// You shouldn't use it unless you're writing code that you know will be built +// both with and without exceptions and you need to conform to an interface +// that uses exceptions. + +[[noreturn]] void ThrowStdLogicError(const std::string& what_arg); +[[noreturn]] void ThrowStdLogicError(const char* what_arg); +[[noreturn]] void ThrowStdInvalidArgument(const std::string& what_arg); +[[noreturn]] void ThrowStdInvalidArgument(const char* what_arg); +[[noreturn]] void ThrowStdDomainError(const std::string& what_arg); +[[noreturn]] void ThrowStdDomainError(const char* what_arg); +[[noreturn]] void ThrowStdLengthError(const std::string& what_arg); +[[noreturn]] void ThrowStdLengthError(const char* what_arg); +[[noreturn]] void ThrowStdOutOfRange(const std::string& what_arg); +[[noreturn]] void ThrowStdOutOfRange(const char* what_arg); +[[noreturn]] void ThrowStdRuntimeError(const std::string& what_arg); +[[noreturn]] void ThrowStdRuntimeError(const char* what_arg); +[[noreturn]] void ThrowStdRangeError(const std::string& what_arg); +[[noreturn]] void ThrowStdRangeError(const char* what_arg); +[[noreturn]] void ThrowStdOverflowError(const std::string& what_arg); +[[noreturn]] void ThrowStdOverflowError(const char* what_arg); +[[noreturn]] void ThrowStdUnderflowError(const std::string& what_arg); +[[noreturn]] void ThrowStdUnderflowError(const char* what_arg); + +[[noreturn]] void ThrowStdBadFunctionCall(); +[[noreturn]] void ThrowStdBadAlloc(); + +// ThrowStdBadArrayNewLength() cannot be consistently supported because +// std::bad_array_new_length is missing in libstdc++ until 4.9.0. +// https://gcc.gnu.org/onlinedocs/gcc-4.8.3/libstdc++/api/a01379_source.html +// https://gcc.gnu.org/onlinedocs/gcc-4.9.0/libstdc++/api/a01327_source.html +// libcxx (as of 3.2) and msvc (as of 2015) both have it. +// [[noreturn]] void ThrowStdBadArrayNewLength(); + +} // namespace base_internal +} // namespace absl + +#endif // ABSL_BASE_INTERNAL_THROW_DELEGATE_H_ diff --git a/Firestore/third_party/abseil-cpp/absl/base/macros.h b/Firestore/third_party/abseil-cpp/absl/base/macros.h new file mode 100644 index 0000000..d414087 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/macros.h @@ -0,0 +1,202 @@ +// +// Copyright 2017 The Abseil Authors. +// +// 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. +// +// ----------------------------------------------------------------------------- +// File: macros.h +// ----------------------------------------------------------------------------- +// +// This header file defines the set of language macros used within Abseil code. +// For the set of macros used to determine supported compilers and platforms, +// see absl/base/config.h instead. +// +// This code is compiled directly on many platforms, including client +// platforms like Windows, Mac, and embedded systems. Before making +// any changes here, make sure that you're not breaking any platforms. +// + +#ifndef ABSL_BASE_MACROS_H_ +#define ABSL_BASE_MACROS_H_ + +#include <cassert> +#include <cstddef> + +#include "absl/base/port.h" + +// ABSL_ARRAYSIZE() +// +// Returns the # of elements in an array as a compile-time constant, which can +// be used in defining new arrays. If you use this macro on a pointer by +// mistake, you will get a compile-time error. +// +// Note: this template function declaration is used in defining arraysize. +// Note that the function doesn't need an implementation, as we only +// use its type. +namespace absl { +namespace macros_internal { +template <typename T, size_t N> +char (&ArraySizeHelper(T (&array)[N]))[N]; +} // namespace macros_internal +} // namespace absl +#define ABSL_ARRAYSIZE(array) \ + (sizeof(::absl::macros_internal::ArraySizeHelper(array))) + +// kLinkerInitialized +// +// An enum used only as a constructor argument to indicate that a variable has +// static storage duration, and that the constructor should do nothing to its +// state. Use of this macro indicates to the reader that it is legal to +// declare a static instance of the class, provided the constructor is given +// the absl::base_internal::kLinkerInitialized argument. +// +// Normally, it is unsafe to declare a static variable that has a constructor or +// a destructor because invocation order is undefined. However, if the type can +// be zero-initialized (which the loader does for static variables) into a valid +// state and the type's destructor does not affect storage, then a constructor +// for static initialization can be declared. +// +// Example: +// // Declaration +// explicit MyClass(absl::base_internal:LinkerInitialized x) {} +// +// // Invocation +// static MyClass my_global(absl::base_internal::kLinkerInitialized); +namespace absl { +namespace base_internal { +enum LinkerInitialized { + kLinkerInitialized = 0, +}; +} // namespace base_internal +} // namespace absl + +// ABSL_FALLTHROUGH_INTENDED +// +// Annotates implicit fall-through between switch labels, allowing a case to +// indicate intentional fallthrough and turn off warnings about any lack of a +// `break` statement. The ABSL_FALLTHROUGH_INTENDED macro should be followed by +// a semicolon and can be used in most places where `break` can, provided that +// no statements exist between it and the next switch label. +// +// Example: +// +// switch (x) { +// case 40: +// case 41: +// if (truth_is_out_there) { +// ++x; +// ABSL_FALLTHROUGH_INTENDED; // Use instead of/along with annotations +// // in comments +// } else { +// return x; +// } +// case 42: +// ... +// +// Notes: when compiled with clang in C++11 mode, the ABSL_FALLTHROUGH_INTENDED +// macro is expanded to the [[clang::fallthrough]] attribute, which is analysed +// when performing switch labels fall-through diagnostic +// (`-Wimplicit-fallthrough`). See clang documentation on language extensions +// for details: +// http://clang.llvm.org/docs/AttributeReference.html#fallthrough-clang-fallthrough +// +// When used with unsupported compilers, the ABSL_FALLTHROUGH_INTENDED macro +// has no effect on diagnostics. In any case this macro has no effect on runtime +// behavior and performance of code. +#ifdef ABSL_FALLTHROUGH_INTENDED +#error "ABSL_FALLTHROUGH_INTENDED should not be defined." +#endif + +// TODO(zhangxy): Use c++17 standard [[fallthrough]] macro, when supported. +#if defined(__clang__) && defined(__has_warning) +#if __has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough") +#define ABSL_FALLTHROUGH_INTENDED [[clang::fallthrough]] +#endif +#elif defined(__GNUC__) && __GNUC__ >= 7 +#define ABSL_FALLTHROUGH_INTENDED [[gnu::fallthrough]] +#endif + +#ifndef ABSL_FALLTHROUGH_INTENDED +#define ABSL_FALLTHROUGH_INTENDED \ + do { \ + } while (0) +#endif + +// ABSL_DEPRECATED() +// +// Marks a deprecated class, struct, enum, function, method and variable +// declarations. The macro argument is used as a custom diagnostic message (e.g. +// suggestion of a better alternative). +// +// Example: +// +// class ABSL_DEPRECATED("Use Bar instead") Foo {...}; +// ABSL_DEPRECATED("Use Baz instead") void Bar() {...} +// +// Every usage of a deprecated entity will trigger a warning when compiled with +// clang's `-Wdeprecated-declarations` option. This option is turned off by +// default, but the warnings will be reported by clang-tidy. +#if defined(__clang__) && __cplusplus >= 201103L && defined(__has_warning) +#define ABSL_DEPRECATED(message) __attribute__((deprecated(message))) +#endif + +#ifndef ABSL_DEPRECATED +#define ABSL_DEPRECATED(message) +#endif + +// ABSL_BAD_CALL_IF() +// +// Used on a function overload to trap bad calls: any call that matches the +// overload will cause a compile-time error. This macro uses a clang-specific +// "enable_if" attribute, as described at +// http://clang.llvm.org/docs/AttributeReference.html#enable-if +// +// Overloads which use this macro should be bracketed by +// `#ifdef ABSL_BAD_CALL_IF`. +// +// Example: +// +// int isdigit(int c); +// #ifdef ABSL_BAD_CALL_IF +// int isdigit(int c) +// ABSL_BAD_CALL_IF(c <= -1 || c > 255, +// "'c' must have the value of an unsigned char or EOF"); +// #endif // ABSL_BAD_CALL_IF + +#if defined(__clang__) +# if __has_attribute(enable_if) +# define ABSL_BAD_CALL_IF(expr, msg) \ + __attribute__((enable_if(expr, "Bad call trap"), unavailable(msg))) +# endif +#endif + +// ABSL_ASSERT() +// +// In C++11, `assert` can't be used portably within constexpr functions. +// ABSL_ASSERT functions as a runtime assert but works in C++11 constexpr +// functions. Example: +// +// constexpr double Divide(double a, double b) { +// return ABSL_ASSERT(b != 0), a / b; +// } +// +// This macro is inspired by +// https://akrzemi1.wordpress.com/2017/05/18/asserts-in-constexpr-functions/ +#if defined(NDEBUG) +#define ABSL_ASSERT(expr) (false ? (void)(expr) : (void)0) +#else +#define ABSL_ASSERT(expr) \ + (ABSL_PREDICT_TRUE((expr)) ? (void)0 : [] { assert(false && #expr); }()) +#endif + +#endif // ABSL_BASE_MACROS_H_ diff --git a/Firestore/third_party/abseil-cpp/absl/base/optimization.h b/Firestore/third_party/abseil-cpp/absl/base/optimization.h new file mode 100644 index 0000000..aaaffa4 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/optimization.h @@ -0,0 +1,165 @@ +// +// Copyright 2017 The Abseil Authors. +// +// 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. +// +// ----------------------------------------------------------------------------- +// File: optimization.h +// ----------------------------------------------------------------------------- +// +// This header file defines portable macros for performance optimization. + +#ifndef ABSL_BASE_OPTIMIZATION_H_ +#define ABSL_BASE_OPTIMIZATION_H_ + +#include "absl/base/config.h" + +// ABSL_BLOCK_TAIL_CALL_OPTIMIZATION +// +// Instructs the compiler to avoid optimizing tail-call recursion. Use of this +// macro is useful when you wish to preserve the existing function order within +// a stack trace for logging, debugging, or profiling purposes. +// +// Example: +// +// int f() { +// int result = g(); +// ABSL_BLOCK_TAIL_CALL_OPTIMIZATION(); +// return result; +// } +#if defined(__pnacl__) +#define ABSL_BLOCK_TAIL_CALL_OPTIMIZATION() if (volatile int x = 0) { (void)x; } +#elif defined(__clang__) +// Clang will not tail call given inline volatile assembly. +#define ABSL_BLOCK_TAIL_CALL_OPTIMIZATION() __asm__ __volatile__("") +#elif defined(__GNUC__) +// GCC will not tail call given inline volatile assembly. +#define ABSL_BLOCK_TAIL_CALL_OPTIMIZATION() __asm__ __volatile__("") +#elif defined(_MSC_VER) +#include <intrin.h> +// The __nop() intrinsic blocks the optimisation. +#define ABSL_BLOCK_TAIL_CALL_OPTIMIZATION() __nop() +#else +#define ABSL_BLOCK_TAIL_CALL_OPTIMIZATION() if (volatile int x = 0) { (void)x; } +#endif + +// ABSL_CACHELINE_SIZE +// +// Explicitly defines the size of the L1 cache for purposes of alignment. +// Setting the cacheline size allows you to specify that certain objects be +// aligned on a cacheline boundary with `ABSL_CACHELINE_ALIGNED` declarations. +// (See below.) +// +// NOTE: this macro should be replaced with the following C++17 features, when +// those are generally available: +// +// * `std::hardware_constructive_interference_size` +// * `std::hardware_destructive_interference_size` +// +// See http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0154r1.html +// for more information. +#if defined(__GNUC__) +// Cache line alignment +#if defined(__i386__) || defined(__x86_64__) +#define ABSL_CACHELINE_SIZE 64 +#elif defined(__powerpc64__) +#define ABSL_CACHELINE_SIZE 128 +#elif defined(__aarch64__) +// We would need to read special register ctr_el0 to find out L1 dcache size. +// This value is a good estimate based on a real aarch64 machine. +#define ABSL_CACHELINE_SIZE 64 +#elif defined(__arm__) +// Cache line sizes for ARM: These values are not strictly correct since +// cache line sizes depend on implementations, not architectures. There +// are even implementations with cache line sizes configurable at boot +// time. +#if defined(__ARM_ARCH_5T__) +#define ABSL_CACHELINE_SIZE 32 +#elif defined(__ARM_ARCH_7A__) +#define ABSL_CACHELINE_SIZE 64 +#endif +#endif + +#ifndef ABSL_CACHELINE_SIZE +// A reasonable default guess. Note that overestimates tend to waste more +// space, while underestimates tend to waste more time. +#define ABSL_CACHELINE_SIZE 64 +#endif + +// ABSL_CACHELINE_ALIGNED +// +// Indicates that the declared object be cache aligned using +// `ABSL_CACHELINE_SIZE` (see above). Cacheline aligning objects allows you to +// load a set of related objects in the L1 cache for performance improvements. +// Cacheline aligning objects properly allows constructive memory sharing and +// prevents destructive (or "false") memory sharing. +// +// NOTE: this macro should be replaced with usage of `alignas()` using +// `std::hardware_constructive_interference_size` and/or +// `std::hardware_destructive_interference_size` when available within C++17. +// +// See http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0154r1.html +// for more information. +// +// On some compilers, `ABSL_CACHELINE_ALIGNED` expands to +// `__attribute__((aligned(ABSL_CACHELINE_SIZE)))`. For compilers where this is +// not known to work, the macro expands to nothing. +// +// No further guarantees are made here. The result of applying the macro +// to variables and types is always implementation-defined. +// +// WARNING: It is easy to use this attribute incorrectly, even to the point +// of causing bugs that are difficult to diagnose, crash, etc. It does not +// of itself guarantee that objects are aligned to a cache line. +// +// Recommendations: +// +// 1) Consult compiler documentation; this comment is not kept in sync as +// toolchains evolve. +// 2) Verify your use has the intended effect. This often requires inspecting +// the generated machine code. +// 3) Prefer applying this attribute to individual variables. Avoid +// applying it to types. This tends to localize the effect. +#define ABSL_CACHELINE_ALIGNED __attribute__((aligned(ABSL_CACHELINE_SIZE))) + +#else // not GCC +#define ABSL_CACHELINE_SIZE 64 +#define ABSL_CACHELINE_ALIGNED +#endif + +// ABSL_PREDICT_TRUE, ABSL_PREDICT_FALSE +// +// Enables the compiler to prioritize compilation using static analysis for +// likely paths within a boolean branch. +// +// Example: +// +// if (ABSL_PREDICT_TRUE(expression)) { +// return result; // Faster if more likely +// } else { +// return 0; +// } +// +// Compilers can use the information that a certain branch is not likely to be +// taken (for instance, a CHECK failure) to optimize for the common case in +// the absence of better information (ie. compiling gcc with `-fprofile-arcs`). +#if ABSL_HAVE_BUILTIN(__builtin_expect) || \ + (defined(__GNUC__) && !defined(__clang__)) +#define ABSL_PREDICT_FALSE(x) (__builtin_expect(x, 0)) +#define ABSL_PREDICT_TRUE(x) (__builtin_expect(!!(x), 1)) +#else +#define ABSL_PREDICT_FALSE(x) x +#define ABSL_PREDICT_TRUE(x) x +#endif + +#endif // ABSL_BASE_OPTIMIZATION_H_ diff --git a/Firestore/third_party/abseil-cpp/absl/base/policy_checks.h b/Firestore/third_party/abseil-cpp/absl/base/policy_checks.h new file mode 100644 index 0000000..17c05c1 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/policy_checks.h @@ -0,0 +1,99 @@ +// Copyright 2017 The Abseil Authors. +// +// 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. +// +// ----------------------------------------------------------------------------- +// File: policy_checks.h +// ----------------------------------------------------------------------------- +// +// This header enforces a minimum set of policies at build time, such as the +// supported compiler and library versions. Unsupported configurations are +// reported with `#error`. This enforcement is best effort, so successfully +// compiling this header does not guarantee a supported configuration. + +#ifndef ABSL_BASE_POLICY_CHECKS_H_ +#define ABSL_BASE_POLICY_CHECKS_H_ + +// Included for the __GLIBC_PREREQ macro used below. +#include <limits.h> + +// Included for the _STLPORT_VERSION macro used below. +#if defined(__cplusplus) +#include <cstddef> +#endif + +// ----------------------------------------------------------------------------- +// Operating System Check +// ----------------------------------------------------------------------------- + +#if defined(__CYGWIN__) +#error "Cygwin is not supported." +#endif + +// ----------------------------------------------------------------------------- +// Compiler Check +// ----------------------------------------------------------------------------- + +// We support MSVC++ 14.0 update 2 and later. +// This minimum will go up. +#if defined(_MSC_FULL_VER) && _MSC_FULL_VER < 190023918 +#error "This package requires Visual Studio 2015 Update 2 or higher" +#endif + +// We support gcc 4.7 and later. +// This minimum will go up. +#if defined(__GNUC__) && !defined(__clang__) +#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 7) +#error "This package requires gcc 4.7 or higher" +#endif +#endif + +// We support Apple Xcode clang 4.2.1 (version 421.11.65) and later. +// This corresponds to Apple Xcode version 4.5. +// This minimum will go up. +#if defined(__apple_build_version__) && __apple_build_version__ < 4211165 +#error "This package requires __apple_build_version__ of 4211165 or higher" +#endif + +// ----------------------------------------------------------------------------- +// C++ Version Check +// ----------------------------------------------------------------------------- + +// Enforce C++11 as the minimum. Note that Visual Studio has not +// advanced __cplusplus despite being good enough for our purposes, so +// so we exempt it from the check. +#if defined(__cplusplus) && !defined(_MSC_VER) +#if __cplusplus < 201103L +#error "C++ versions less than C++11 are not supported." +#endif +#endif + +// ----------------------------------------------------------------------------- +// Standard Library Check +// ----------------------------------------------------------------------------- + +// We have chosen glibc 2.12 as the minimum as it was tagged for release +// in May, 2010 and includes some functionality used in Google software +// (for instance pthread_setname_np): +// https://sourceware.org/ml/libc-alpha/2010-05/msg00000.html +#ifdef __GLIBC_PREREQ +#if !__GLIBC_PREREQ(2, 12) +#error "Minimum required version of glibc is 2.12." +#endif +#endif + +#if defined(_STLPORT_VERSION) +#error "STLPort is not supported." +#endif + +#endif // ABSL_BASE_POLICY_CHECKS_H_ diff --git a/Firestore/third_party/abseil-cpp/absl/base/port.h b/Firestore/third_party/abseil-cpp/absl/base/port.h new file mode 100644 index 0000000..1c67257 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/port.h @@ -0,0 +1,26 @@ +// Copyright 2017 The Abseil Authors. +// +// 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. +// +// This files is a forwarding header for other headers containing various +// portability macros and functions. +// This file is used for both C and C++! + +#ifndef ABSL_BASE_PORT_H_ +#define ABSL_BASE_PORT_H_ + +#include "absl/base/attributes.h" +#include "absl/base/config.h" +#include "absl/base/optimization.h" + +#endif // ABSL_BASE_PORT_H_ diff --git a/Firestore/third_party/abseil-cpp/absl/base/raw_logging_test.cc b/Firestore/third_party/abseil-cpp/absl/base/raw_logging_test.cc new file mode 100644 index 0000000..dae4b35 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/base/raw_logging_test.cc @@ -0,0 +1,50 @@ +// Copyright 2017 The Abseil Authors. +// +// 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. + +// This test serves primarily as a compilation test for base/raw_logging.h. +// Raw logging testing is covered by logging_unittest.cc, which is not as +// portable as this test. + +#include "absl/base/internal/raw_logging.h" + +#include "gtest/gtest.h" + +namespace { + +TEST(RawLoggingCompilationTest, Log) { + ABSL_RAW_LOG(INFO, "RAW INFO: %d", 1); + ABSL_RAW_LOG(ERROR, "RAW ERROR: %d", 1); +} + +TEST(RawLoggingCompilationTest, PassingCheck) { + ABSL_RAW_CHECK(true, "RAW CHECK"); +} + +// Not all platforms support output from raw log, so we don't verify any +// particular output for RAW check failures (expecting the empty std::string +// accomplishes this). This test is primarily a compilation test, but we +// are verifying process death when EXPECT_DEATH works for a platform. +const char kExpectedDeathOutput[] = ""; + +TEST(RawLoggingDeathTest, FailingCheck) { + EXPECT_DEATH_IF_SUPPORTED(ABSL_RAW_CHECK(1 == 0, "explanation"), + kExpectedDeathOutput); +} + +TEST(RawLoggingDeathTest, LogFatal) { + EXPECT_DEATH_IF_SUPPORTED(ABSL_RAW_LOG(FATAL, "my dog has fleas"), + kExpectedDeathOutput); +} + +} // namespace |