| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___CONFIG |
| #define _LIBCPP___CONFIG |
| |
| #include <__config_site> |
| |
| #ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER |
| # pragma GCC system_header |
| #endif |
| |
| #ifdef __cplusplus |
| |
| # include <__configuration/abi.h> |
| # include <__configuration/attributes.h> |
| # include <__configuration/availability.h> |
| # include <__configuration/compiler.h> |
| # include <__configuration/experimental.h> |
| # include <__configuration/hardening.h> |
| # include <__configuration/language.h> |
| # include <__configuration/platform.h> |
| |
| // The attributes supported by clang are documented at https://clang.llvm.org/docs/AttributeReference.html |
| |
| // _LIBCPP_VERSION represents the version of libc++, which matches the version of LLVM. |
| // Given a LLVM release LLVM XX.YY.ZZ (e.g. LLVM 17.0.1 == 17.00.01), _LIBCPP_VERSION is |
| // defined to XXYYZZ. |
| # define _LIBCPP_VERSION 230000 |
| |
| # define _LIBCPP_CONCAT_IMPL(_X, _Y) _X##_Y |
| # define _LIBCPP_CONCAT(_X, _Y) _LIBCPP_CONCAT_IMPL(_X, _Y) |
| # define _LIBCPP_CONCAT3(X, Y, Z) _LIBCPP_CONCAT(X, _LIBCPP_CONCAT(Y, Z)) |
| |
| # define _LIBCPP_TOSTRING2(x) #x |
| # define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) |
| |
| # ifndef __has_constexpr_builtin |
| # define __has_constexpr_builtin(x) 0 |
| # endif |
| |
| // This checks wheter a Clang module is built |
| # ifndef __building_module |
| # define __building_module(...) 0 |
| # endif |
| |
| // '__is_identifier' returns '0' if '__x' is a reserved identifier provided by |
| // the compiler and '1' otherwise. |
| # ifndef __is_identifier |
| # define __is_identifier(__x) 1 |
| # endif |
| |
| # define __has_keyword(__x) !(__is_identifier(__x)) |
| |
| # ifndef __has_warning |
| # define __has_warning(...) 0 |
| # endif |
| |
| # if !defined(_LIBCPP_COMPILER_CLANG_BASED) && __cplusplus < 201103L |
| # error "libc++ only supports C++03 with Clang-based compilers. Please enable C++11" |
| # endif |
| |
| # if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_NO_VCRUNTIME) |
| # define _LIBCPP_ABI_VCRUNTIME |
| # endif |
| |
| # if defined(__MVS__) |
| # include <features.h> // for __NATIVE_ASCII_F |
| # endif |
| |
| # if defined(_WIN32) |
| # define _LIBCPP_WIN32API |
| # define _LIBCPP_SHORT_WCHAR 1 |
| // Both MinGW and native MSVC provide a "MSVC"-like environment |
| # define _LIBCPP_MSVCRT_LIKE |
| // If mingw not explicitly detected, assume using MS C runtime only if |
| // a MS compatibility version is specified. |
| # if defined(_MSC_VER) && !defined(__MINGW32__) |
| # define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library |
| # endif |
| # if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) |
| # define _LIBCPP_HAS_BITSCAN64 1 |
| # else |
| # define _LIBCPP_HAS_BITSCAN64 0 |
| # endif |
| # define _LIBCPP_HAS_OPEN_WITH_WCHAR 1 |
| # else |
| # define _LIBCPP_HAS_OPEN_WITH_WCHAR 0 |
| # define _LIBCPP_HAS_BITSCAN64 0 |
| # endif // defined(_WIN32) |
| |
| # if defined(_AIX) && !defined(__64BIT__) |
| // The size of wchar is 2 byte on 32-bit mode on AIX. |
| # define _LIBCPP_SHORT_WCHAR 1 |
| # endif |
| |
| // Libc++ supports various implementations of std::random_device. |
| // |
| // _LIBCPP_USING_DEV_RANDOM |
| // Read entropy from the given file, by default `/dev/urandom`. |
| // If a token is provided, it is assumed to be the path to a file |
| // to read entropy from. This is the default behavior if nothing |
| // else is specified. This implementation requires storing state |
| // inside `std::random_device`. |
| // |
| // _LIBCPP_USING_ARC4_RANDOM |
| // Use arc4random(). This allows obtaining random data even when |
| // using sandboxing mechanisms. On some platforms like Apple, this |
| // is the recommended source of entropy for user-space programs. |
| // When this option is used, the token passed to `std::random_device`'s |
| // constructor *must* be "/dev/urandom" -- anything else is an error. |
| // |
| // _LIBCPP_USING_GETENTROPY |
| // Use getentropy(). |
| // When this option is used, the token passed to `std::random_device`'s |
| // constructor *must* be "/dev/urandom" -- anything else is an error. |
| // |
| // _LIBCPP_USING_FUCHSIA_CPRNG |
| // Use Fuchsia's zx_cprng_draw() system call, which is specified to |
| // deliver high-quality entropy and cannot fail. |
| // When this option is used, the token passed to `std::random_device`'s |
| // constructor *must* be "/dev/urandom" -- anything else is an error. |
| // |
| // _LIBCPP_USING_WIN32_RANDOM |
| // Use rand_s(), for use on Windows. |
| // When this option is used, the token passed to `std::random_device`'s |
| // constructor *must* be "/dev/urandom" -- anything else is an error. |
| # if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || \ |
| defined(__DragonFly__) |
| # define _LIBCPP_USING_ARC4_RANDOM |
| # elif defined(__wasi__) || defined(__EMSCRIPTEN__) |
| # define _LIBCPP_USING_GETENTROPY |
| # elif defined(__Fuchsia__) |
| # define _LIBCPP_USING_FUCHSIA_CPRNG |
| # elif defined(_LIBCPP_WIN32API) |
| # define _LIBCPP_USING_WIN32_RANDOM |
| # else |
| # define _LIBCPP_USING_DEV_RANDOM |
| # endif |
| |
| # ifndef _LIBCPP_CXX03_LANG |
| |
| # define _LIBCPP_ALIGNOF(...) alignof(__VA_ARGS__) |
| # define _ALIGNAS_TYPE(x) alignas(x) |
| # define _ALIGNAS(x) alignas(x) |
| # define _NOEXCEPT noexcept |
| # define _NOEXCEPT_(...) noexcept(__VA_ARGS__) |
| # define _LIBCPP_CONSTEXPR constexpr |
| |
| # else |
| |
| # define _LIBCPP_ALIGNOF(...) _Alignof(__VA_ARGS__) |
| # define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) |
| # define _ALIGNAS(x) __attribute__((__aligned__(x))) |
| # define nullptr __nullptr |
| # define _NOEXCEPT throw() |
| # define _NOEXCEPT_(...) |
| # define static_assert(...) _Static_assert(__VA_ARGS__) |
| # define decltype(...) __decltype(__VA_ARGS__) |
| # define _LIBCPP_CONSTEXPR |
| |
| typedef __char16_t char16_t; |
| typedef __char32_t char32_t; |
| |
| # endif |
| |
| # define _LIBCPP_PREFERRED_ALIGNOF(_Tp) __alignof(_Tp) |
| |
| # if __has_extension(blocks) && defined(__APPLE__) |
| # define _LIBCPP_HAS_BLOCKS_RUNTIME 1 |
| # else |
| # define _LIBCPP_HAS_BLOCKS_RUNTIME 0 |
| # endif |
| |
| # ifdef _LIBCPP_COMPILER_CLANG_BASED |
| # define _LIBCPP_DIAGNOSTIC_PUSH _Pragma("clang diagnostic push") |
| # define _LIBCPP_DIAGNOSTIC_POP _Pragma("clang diagnostic pop") |
| # define _LIBCPP_CLANG_DIAGNOSTIC_IGNORED(str) _Pragma(_LIBCPP_TOSTRING(clang diagnostic ignored str)) |
| # define _LIBCPP_GCC_DIAGNOSTIC_IGNORED(str) |
| # elif defined(_LIBCPP_COMPILER_GCC) |
| # define _LIBCPP_DIAGNOSTIC_PUSH _Pragma("GCC diagnostic push") |
| # define _LIBCPP_DIAGNOSTIC_POP _Pragma("GCC diagnostic pop") |
| # define _LIBCPP_CLANG_DIAGNOSTIC_IGNORED(str) |
| # define _LIBCPP_GCC_DIAGNOSTIC_IGNORED(str) _Pragma(_LIBCPP_TOSTRING(GCC diagnostic ignored str)) |
| # else |
| # define _LIBCPP_DIAGNOSTIC_PUSH |
| # define _LIBCPP_DIAGNOSTIC_POP |
| # define _LIBCPP_CLANG_DIAGNOSTIC_IGNORED(str) |
| # define _LIBCPP_GCC_DIAGNOSTIC_IGNORED(str) |
| # endif |
| |
| // Macros to enter and leave a state where deprecation warnings are suppressed. |
| # define _LIBCPP_SUPPRESS_DEPRECATED_PUSH \ |
| _LIBCPP_DIAGNOSTIC_PUSH _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated") \ |
| _LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations") |
| # define _LIBCPP_SUPPRESS_DEPRECATED_POP _LIBCPP_DIAGNOSTIC_POP |
| |
| // Clang modules take a significant compile time hit when pushing and popping diagnostics. |
| // Since all the headers are marked as system headers unless _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER is defined, we can |
| // simply disable this pushing and popping when _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER isn't defined. |
| # ifdef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER |
| # define _LIBCPP_PUSH_EXTENSION_DIAGNOSTICS \ |
| _LIBCPP_DIAGNOSTIC_PUSH \ |
| _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wc++11-extensions") \ |
| _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wc++14-extensions") \ |
| _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wc++17-extensions") \ |
| _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wc++20-extensions") \ |
| _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wc++23-extensions") \ |
| _LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wc++14-extensions") \ |
| _LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wc++17-extensions") \ |
| _LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wc++20-extensions") \ |
| _LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wc++23-extensions") |
| # define _LIBCPP_POP_EXTENSION_DIAGNOSTICS _LIBCPP_DIAGNOSTIC_POP |
| # else |
| # define _LIBCPP_PUSH_EXTENSION_DIAGNOSTICS |
| # define _LIBCPP_POP_EXTENSION_DIAGNOSTICS |
| # endif |
| |
| // clang-format off |
| |
| // The unversioned namespace is used when we want to be ABI compatible with other standard libraries in some way. There |
| // are two main categories where that's the case: |
| // - Historically, we have made exception types ABI compatible with libstdc++ to allow throwing them between libstdc++ |
| // and libc++. This is not used anymore for new exception types, since there is no use-case for it anymore. |
| // - Types and functions which are used by the compiler are in the unversioned namespace, since the compiler has to know |
| // their mangling without the appropriate declaration in some cases. |
| // If it's not clear whether using the unversioned namespace is the correct thing to do, it's not. The versioned |
| // namespace (_LIBCPP_BEGIN_NAMESPACE_STD) should almost always be used. |
| # define _LIBCPP_BEGIN_UNVERSIONED_NAMESPACE_STD \ |
| _LIBCPP_PUSH_EXTENSION_DIAGNOSTICS namespace _LIBCPP_NAMESPACE_VISIBILITY std { |
| |
| # define _LIBCPP_END_UNVERSIONED_NAMESPACE_STD } _LIBCPP_POP_EXTENSION_DIAGNOSTICS |
| |
| # define _LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_BEGIN_UNVERSIONED_NAMESPACE_STD inline namespace _LIBCPP_ABI_NAMESPACE { |
| # define _LIBCPP_END_NAMESPACE_STD } _LIBCPP_END_UNVERSIONED_NAMESPACE_STD |
| |
| // TODO: This should really be in the versioned namespace |
| #define _LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL _LIBCPP_BEGIN_UNVERSIONED_NAMESPACE_STD namespace experimental { |
| #define _LIBCPP_END_NAMESPACE_EXPERIMENTAL } _LIBCPP_END_UNVERSIONED_NAMESPACE_STD |
| |
| #define _LIBCPP_BEGIN_NAMESPACE_LFTS _LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL inline namespace fundamentals_v1 { |
| #define _LIBCPP_END_NAMESPACE_LFTS } _LIBCPP_END_NAMESPACE_EXPERIMENTAL |
| |
| #define _LIBCPP_BEGIN_NAMESPACE_LFTS_V2 _LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL inline namespace fundamentals_v2 { |
| #define _LIBCPP_END_NAMESPACE_LFTS_V2 } _LIBCPP_END_NAMESPACE_EXPERIMENTAL |
| |
| #ifdef _LIBCPP_ABI_NO_FILESYSTEM_INLINE_NAMESPACE |
| # define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM _LIBCPP_BEGIN_NAMESPACE_STD namespace filesystem { |
| # define _LIBCPP_END_NAMESPACE_FILESYSTEM } _LIBCPP_END_NAMESPACE_STD |
| #else |
| # define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM _LIBCPP_BEGIN_NAMESPACE_STD \ |
| inline namespace __fs { namespace filesystem { |
| |
| # define _LIBCPP_END_NAMESPACE_FILESYSTEM }} _LIBCPP_END_NAMESPACE_STD |
| #endif |
| |
| // clang-format on |
| |
| # if !defined(__SIZEOF_INT128__) || defined(_MSC_VER) |
| # define _LIBCPP_HAS_INT128 0 |
| # else |
| # define _LIBCPP_HAS_INT128 1 |
| # endif |
| |
| # ifdef _LIBCPP_CXX03_LANG |
| # define _LIBCPP_DECLARE_STRONG_ENUM(x) \ |
| struct _LIBCPP_EXPORTED_FROM_ABI x { \ |
| enum __lx |
| // clang-format off |
| # define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ |
| __lx __v_; \ |
| _LIBCPP_HIDE_FROM_ABI x(__lx __v) : __v_(__v) {} \ |
| _LIBCPP_HIDE_FROM_ABI explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ |
| _LIBCPP_HIDE_FROM_ABI operator int() const { return __v_; } \ |
| }; |
| // clang-format on |
| |
| # else // _LIBCPP_CXX03_LANG |
| # define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class x |
| # define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) |
| # endif // _LIBCPP_CXX03_LANG |
| |
| # ifdef __FreeBSD__ |
| # define _DECLARE_C99_LDBL_MATH 1 |
| # endif |
| |
| // If we are getting operator new from the MSVC CRT, then allocation overloads |
| // for align_val_t were added in 19.12, aka VS 2017 version 15.3. |
| # if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 |
| # define _LIBCPP_HAS_LIBRARY_ALIGNED_ALLOCATION 0 |
| # elif defined(_LIBCPP_ABI_VCRUNTIME) && !defined(__cpp_aligned_new) |
| // We're deferring to Microsoft's STL to provide aligned new et al. We don't |
| // have it unless the language feature test macro is defined. |
| # define _LIBCPP_HAS_LIBRARY_ALIGNED_ALLOCATION 0 |
| # elif defined(__MVS__) |
| # define _LIBCPP_HAS_LIBRARY_ALIGNED_ALLOCATION 0 |
| # else |
| # define _LIBCPP_HAS_LIBRARY_ALIGNED_ALLOCATION 1 |
| # endif |
| |
| # if !_LIBCPP_HAS_LIBRARY_ALIGNED_ALLOCATION || (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606) |
| # define _LIBCPP_HAS_ALIGNED_ALLOCATION 0 |
| # else |
| # define _LIBCPP_HAS_ALIGNED_ALLOCATION 1 |
| # endif |
| |
| # if defined(__APPLE__) || defined(__FreeBSD__) |
| # define _LIBCPP_WCTYPE_IS_MASK |
| # endif |
| |
| // FIXME: using `#warning` causes diagnostics from system headers which include deprecated headers. This can only be |
| // enabled again once https://github.com/llvm/llvm-project/pull/168041 (or a similar feature) has landed, since that |
| // allows suppression in system headers. |
| # if defined(__DEPRECATED) && __DEPRECATED && !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) && 0 |
| # define _LIBCPP_DIAGNOSE_DEPRECATED_HEADERS 1 |
| # else |
| # define _LIBCPP_DIAGNOSE_DEPRECATED_HEADERS 0 |
| # endif |
| |
| # if _LIBCPP_STD_VER <= 11 |
| # define _LIBCPP_EXPLICIT_SINCE_CXX14 |
| # else |
| # define _LIBCPP_EXPLICIT_SINCE_CXX14 explicit |
| # endif |
| |
| # if _LIBCPP_STD_VER >= 23 |
| # define _LIBCPP_EXPLICIT_SINCE_CXX23 explicit |
| # else |
| # define _LIBCPP_EXPLICIT_SINCE_CXX23 |
| # endif |
| |
| # if _LIBCPP_STD_VER >= 14 |
| # define _LIBCPP_CONSTEXPR_SINCE_CXX14 constexpr |
| # else |
| # define _LIBCPP_CONSTEXPR_SINCE_CXX14 |
| # endif |
| |
| # if _LIBCPP_STD_VER >= 17 |
| # define _LIBCPP_CONSTEXPR_SINCE_CXX17 constexpr |
| # else |
| # define _LIBCPP_CONSTEXPR_SINCE_CXX17 |
| # endif |
| |
| # if _LIBCPP_STD_VER >= 20 |
| # define _LIBCPP_CONSTEXPR_SINCE_CXX20 constexpr |
| # else |
| # define _LIBCPP_CONSTEXPR_SINCE_CXX20 |
| # endif |
| |
| # if _LIBCPP_STD_VER >= 23 |
| # define _LIBCPP_CONSTEXPR_SINCE_CXX23 constexpr |
| # else |
| # define _LIBCPP_CONSTEXPR_SINCE_CXX23 |
| # endif |
| |
| # if _LIBCPP_STD_VER >= 26 |
| # define _LIBCPP_CONSTEXPR_SINCE_CXX26 constexpr |
| # else |
| # define _LIBCPP_CONSTEXPR_SINCE_CXX26 |
| # endif |
| |
| // Thread API |
| // clang-format off |
| # if _LIBCPP_HAS_THREADS && \ |
| !_LIBCPP_HAS_THREAD_API_PTHREAD && \ |
| !_LIBCPP_HAS_THREAD_API_WIN32 && \ |
| !_LIBCPP_HAS_THREAD_API_EXTERNAL |
| |
| # if defined(__FreeBSD__) || \ |
| defined(__wasi__) || \ |
| defined(__NetBSD__) || \ |
| defined(__OpenBSD__) || \ |
| defined(__NuttX__) || \ |
| defined(__linux__) || \ |
| defined(__GNU__) || \ |
| defined(__APPLE__) || \ |
| defined(__MVS__) || \ |
| defined(_AIX) || \ |
| defined(__EMSCRIPTEN__) |
| // clang-format on |
| # undef _LIBCPP_HAS_THREAD_API_PTHREAD |
| # define _LIBCPP_HAS_THREAD_API_PTHREAD 1 |
| # elif defined(__Fuchsia__) |
| // TODO(44575): Switch to C11 thread API when possible. |
| # undef _LIBCPP_HAS_THREAD_API_PTHREAD |
| # define _LIBCPP_HAS_THREAD_API_PTHREAD 1 |
| # elif defined(_LIBCPP_WIN32API) |
| # undef _LIBCPP_HAS_THREAD_API_WIN32 |
| # define _LIBCPP_HAS_THREAD_API_WIN32 1 |
| # else |
| # error "No thread API" |
| # endif // _LIBCPP_HAS_THREAD_API |
| # endif // _LIBCPP_HAS_THREADS |
| |
| # if !_LIBCPP_HAS_THREAD_API_PTHREAD |
| # define _LIBCPP_HAS_COND_CLOCKWAIT 0 |
| # elif (defined(__ANDROID__) && __ANDROID_API__ >= 30) || _LIBCPP_GLIBC_PREREQ(2, 30) |
| # define _LIBCPP_HAS_COND_CLOCKWAIT 1 |
| # else |
| # define _LIBCPP_HAS_COND_CLOCKWAIT 0 |
| # endif |
| |
| # if !_LIBCPP_HAS_THREADS && _LIBCPP_HAS_THREAD_API_PTHREAD |
| # error _LIBCPP_HAS_THREAD_API_PTHREAD may only be true when _LIBCPP_HAS_THREADS is true. |
| # endif |
| |
| # if !_LIBCPP_HAS_THREADS && _LIBCPP_HAS_THREAD_API_EXTERNAL |
| # error _LIBCPP_HAS_THREAD_API_EXTERNAL may only be true when _LIBCPP_HAS_THREADS is true. |
| # endif |
| |
| # if !_LIBCPP_HAS_MONOTONIC_CLOCK && _LIBCPP_HAS_THREADS |
| # error _LIBCPP_HAS_MONOTONIC_CLOCK may only be false when _LIBCPP_HAS_THREADS is false. |
| # endif |
| |
| # if _LIBCPP_HAS_THREADS && !defined(__STDCPP_THREADS__) |
| # define __STDCPP_THREADS__ 1 |
| # endif |
| |
| // The glibc and Bionic implementation of pthreads implements |
| // pthread_mutex_destroy as nop for regular mutexes. Additionally, Win32 |
| // mutexes have no destroy mechanism. |
| // |
| // This optimization can't be performed on Apple platforms, where |
| // pthread_mutex_destroy can allow the kernel to release resources. |
| // See https://llvm.org/D64298 for details. |
| // |
| // TODO(EricWF): Enable this optimization on Bionic after speaking to their |
| // respective stakeholders. |
| // clang-format off |
| # if (_LIBCPP_HAS_THREAD_API_PTHREAD && defined(__GLIBC__)) || \ |
| (_LIBCPP_HAS_THREAD_API_C11 && defined(__Fuchsia__)) || \ |
| _LIBCPP_HAS_THREAD_API_WIN32 |
| // clang-format on |
| # define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION 1 |
| # else |
| # define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION 0 |
| # endif |
| |
| // Destroying a condvar is a nop on Windows. |
| // |
| // This optimization can't be performed on Apple platforms, where |
| // pthread_cond_destroy can allow the kernel to release resources. |
| // See https://llvm.org/D64298 for details. |
| // |
| // TODO(EricWF): This is potentially true for some pthread implementations |
| // as well. |
| # if (_LIBCPP_HAS_THREAD_API_C11 && defined(__Fuchsia__)) || _LIBCPP_HAS_THREAD_API_WIN32 |
| # define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION 1 |
| # else |
| # define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION 0 |
| # endif |
| |
| # if defined(__BIONIC__) || defined(__NuttX__) || defined(__Fuchsia__) || defined(__wasi__) || \ |
| _LIBCPP_HAS_MUSL_LIBC || defined(__OpenBSD__) || _LIBCPP_LIBC_LLVM_LIBC |
| # define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE |
| # endif |
| |
| # if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) |
| # define _LIBCPP_HAS_C_ATOMIC_IMP 1 |
| # define _LIBCPP_HAS_GCC_ATOMIC_IMP 0 |
| # define _LIBCPP_HAS_EXTERNAL_ATOMIC_IMP 0 |
| # elif defined(_LIBCPP_COMPILER_GCC) |
| # define _LIBCPP_HAS_C_ATOMIC_IMP 0 |
| # define _LIBCPP_HAS_GCC_ATOMIC_IMP 1 |
| # define _LIBCPP_HAS_EXTERNAL_ATOMIC_IMP 0 |
| # endif |
| |
| # if !_LIBCPP_HAS_C_ATOMIC_IMP && !_LIBCPP_HAS_GCC_ATOMIC_IMP && !_LIBCPP_HAS_EXTERNAL_ATOMIC_IMP |
| # define _LIBCPP_HAS_ATOMIC_HEADER 0 |
| # else |
| # define _LIBCPP_HAS_ATOMIC_HEADER 1 |
| # ifndef _LIBCPP_ATOMIC_FLAG_TYPE |
| # define _LIBCPP_ATOMIC_FLAG_TYPE bool |
| # endif |
| # endif |
| |
| // We often repeat things just for handling wide characters in the library. |
| // When wide characters are disabled, it can be useful to have a quick way of |
| // disabling it without having to resort to #if-#endif, which has a larger |
| // impact on readability. |
| # if !_LIBCPP_HAS_WIDE_CHARACTERS |
| # define _LIBCPP_IF_WIDE_CHARACTERS(...) |
| # else |
| # define _LIBCPP_IF_WIDE_CHARACTERS(...) __VA_ARGS__ |
| # endif |
| |
| // clang-format off |
| # define _LIBCPP_PUSH_MACROS _Pragma("push_macro(\"min\")") _Pragma("push_macro(\"max\")") _Pragma("push_macro(\"refresh\")") _Pragma("push_macro(\"move\")") _Pragma("push_macro(\"erase\")") |
| # define _LIBCPP_POP_MACROS _Pragma("pop_macro(\"min\")") _Pragma("pop_macro(\"max\")") _Pragma("pop_macro(\"refresh\")") _Pragma("pop_macro(\"move\")") _Pragma("pop_macro(\"erase\")") |
| // clang-format on |
| |
| # ifndef _LIBCPP_NO_AUTO_LINK |
| # if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) |
| # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) |
| # pragma comment(lib, "c++.lib") |
| # else |
| # pragma comment(lib, "libc++.lib") |
| # endif |
| # endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) |
| # endif // _LIBCPP_NO_AUTO_LINK |
| |
| // Configures the fopen close-on-exec mode character, if any. This string will |
| // be appended to any mode string used by fstream for fopen/fdopen. |
| // |
| // Not all platforms support this, but it helps avoid fd-leaks on platforms that |
| // do. |
| # if defined(__BIONIC__) |
| # define _LIBCPP_FOPEN_CLOEXEC_MODE "e" |
| # else |
| # define _LIBCPP_FOPEN_CLOEXEC_MODE |
| # endif |
| |
| // c8rtomb() and mbrtoc8() were added in C++20 and C23. Support for these |
| // functions is gradually being added to existing C libraries. The conditions |
| // below check for known C library versions and conditions under which these |
| // functions are declared by the C library. |
| // |
| // GNU libc 2.36 and newer declare c8rtomb() and mbrtoc8() in C++ modes if |
| // __cpp_char8_t is defined or if C2X extensions are enabled. Determining |
| // the latter depends on internal GNU libc details that are not appropriate |
| // to depend on here, so any declarations present when __cpp_char8_t is not |
| // defined are ignored. |
| # if _LIBCPP_GLIBC_PREREQ(2, 36) && defined(__cpp_char8_t) |
| # define _LIBCPP_HAS_C8RTOMB_MBRTOC8 1 |
| # else |
| # define _LIBCPP_HAS_C8RTOMB_MBRTOC8 0 |
| # endif |
| |
| // There are a handful of public standard library types that are intended to |
| // support CTAD but don't need any explicit deduction guides to do so. This |
| // macro is used to mark them as such, which suppresses the |
| // '-Wctad-maybe-unsupported' compiler warning when CTAD is used in user code |
| // with these classes. |
| # if _LIBCPP_STD_VER >= 17 |
| # ifdef _LIBCPP_COMPILER_CLANG_BASED |
| # define _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(_ClassName) \ |
| template <class... _Tag> \ |
| [[maybe_unused]] _ClassName(typename _Tag::__allow_ctad...)->_ClassName<_Tag...> |
| # else |
| # define _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(ClassName) \ |
| template <class... _Tag> \ |
| ClassName(typename _Tag::__allow_ctad...)->ClassName<_Tag...> |
| # endif |
| # else |
| # define _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(_ClassName) static_assert(true, "") |
| # endif |
| |
| # if defined(__OBJC__) && defined(_LIBCPP_APPLE_CLANG_VER) |
| # define _LIBCPP_WORKAROUND_OBJCXX_COMPILER_INTRINSICS |
| # endif |
| |
| # define _PSTL_PRAGMA(x) _Pragma(#x) |
| |
| // Enable SIMD for compilers that support OpenMP 4.0 |
| # if (defined(_OPENMP) && _OPENMP >= 201307) |
| |
| # define _PSTL_UDR_PRESENT |
| # define _PSTL_PRAGMA_SIMD _PSTL_PRAGMA(omp simd) |
| # define _PSTL_PRAGMA_DECLARE_SIMD _PSTL_PRAGMA(omp declare simd) |
| # define _PSTL_PRAGMA_SIMD_REDUCTION(PRM) _PSTL_PRAGMA(omp simd reduction(PRM)) |
| # define _PSTL_PRAGMA_SIMD_SCAN(PRM) _PSTL_PRAGMA(omp simd reduction(inscan, PRM)) |
| # define _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN(PRM) _PSTL_PRAGMA(omp scan inclusive(PRM)) |
| # define _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN(PRM) _PSTL_PRAGMA(omp scan exclusive(PRM)) |
| |
| // Declaration of reduction functor, where |
| // NAME - the name of the functor |
| // OP - type of the callable object with the reduction operation |
| // omp_in - refers to the local partial result |
| // omp_out - refers to the final value of the combiner operator |
| // omp_priv - refers to the private copy of the initial value |
| // omp_orig - refers to the original variable to be reduced |
| # define _PSTL_PRAGMA_DECLARE_REDUCTION(NAME, OP) \ |
| _PSTL_PRAGMA(omp declare reduction(NAME:OP : omp_out(omp_in)) initializer(omp_priv = omp_orig)) |
| |
| # elif defined(_LIBCPP_COMPILER_CLANG_BASED) |
| |
| # define _PSTL_PRAGMA_SIMD _Pragma("clang loop vectorize(enable) interleave(enable)") |
| # define _PSTL_PRAGMA_DECLARE_SIMD |
| # define _PSTL_PRAGMA_SIMD_REDUCTION(PRM) _Pragma("clang loop vectorize(enable) interleave(enable)") |
| # define _PSTL_PRAGMA_SIMD_SCAN(PRM) _Pragma("clang loop vectorize(enable) interleave(enable)") |
| # define _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN(PRM) |
| # define _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN(PRM) |
| # define _PSTL_PRAGMA_DECLARE_REDUCTION(NAME, OP) |
| |
| # else // (defined(_OPENMP) && _OPENMP >= 201307) |
| |
| # define _PSTL_PRAGMA_SIMD |
| # define _PSTL_PRAGMA_DECLARE_SIMD |
| # define _PSTL_PRAGMA_SIMD_REDUCTION(PRM) |
| # define _PSTL_PRAGMA_SIMD_SCAN(PRM) |
| # define _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN(PRM) |
| # define _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN(PRM) |
| # define _PSTL_PRAGMA_DECLARE_REDUCTION(NAME, OP) |
| |
| # endif // (defined(_OPENMP) && _OPENMP >= 201307) |
| |
| # define _PSTL_USE_NONTEMPORAL_STORES_IF_ALLOWED |
| |
| #endif // __cplusplus |
| |
| #endif // _LIBCPP___CONFIG |
