diff options
author | maxim-yurchuk <[email protected]> | 2024-10-09 12:29:46 +0300 |
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committer | maxim-yurchuk <[email protected]> | 2024-10-09 13:14:22 +0300 |
commit | 9731d8a4bb7ee2cc8554eaf133bb85498a4c7d80 (patch) | |
tree | a8fb3181d5947c0d78cf402aa56e686130179049 /contrib/libs/cxxsupp/libcxx/src | |
parent | a44b779cd359f06c3ebbef4ec98c6b38609d9d85 (diff) |
publishFullContrib: true for ydb
<HIDDEN_URL>
commit_hash:c82a80ac4594723cebf2c7387dec9c60217f603e
Diffstat (limited to 'contrib/libs/cxxsupp/libcxx/src')
7 files changed, 566 insertions, 0 deletions
diff --git a/contrib/libs/cxxsupp/libcxx/src/experimental/memory_resource.cpp b/contrib/libs/cxxsupp/libcxx/src/experimental/memory_resource.cpp new file mode 100644 index 00000000000..0798d2e72ce --- /dev/null +++ b/contrib/libs/cxxsupp/libcxx/src/experimental/memory_resource.cpp @@ -0,0 +1,149 @@ +//===----------------------------------------------------------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +#include <experimental/memory_resource> + +_LIBCPP_SUPPRESS_DEPRECATED_PUSH + +#ifndef _LIBCPP_HAS_NO_ATOMIC_HEADER +# include <atomic> +#elif !defined(_LIBCPP_HAS_NO_THREADS) +# include <mutex> +# if defined(__ELF__) && defined(_LIBCPP_LINK_PTHREAD_LIB) +# pragma comment(lib, "pthread") +# endif +#endif + +_LIBCPP_BEGIN_NAMESPACE_LFTS_PMR + +// memory_resource + +//memory_resource::~memory_resource() {} + +// new_delete_resource() + +class _LIBCPP_EXPORTED_FROM_ABI __new_delete_memory_resource_imp + : public memory_resource +{ + void *do_allocate(size_t size, size_t align) override { +#ifdef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION + if (__is_overaligned_for_new(align)) + __throw_bad_alloc(); +#endif + return _VSTD::__libcpp_allocate(size, align); + } + + void do_deallocate(void *p, size_t n, size_t align) override { + _VSTD::__libcpp_deallocate(p, n, align); + } + + bool do_is_equal(memory_resource const & other) const noexcept override + { return &other == this; } + +public: + ~__new_delete_memory_resource_imp() override = default; +}; + +// null_memory_resource() + +class _LIBCPP_EXPORTED_FROM_ABI __null_memory_resource_imp + : public memory_resource +{ +public: + ~__null_memory_resource_imp() = default; + +protected: + virtual void* do_allocate(size_t, size_t) { + __throw_bad_alloc(); + } + virtual void do_deallocate(void *, size_t, size_t) {} + virtual bool do_is_equal(memory_resource const & __other) const noexcept + { return &__other == this; } +}; + +namespace { + +union ResourceInitHelper { + struct { + __new_delete_memory_resource_imp new_delete_res; + __null_memory_resource_imp null_res; + } resources; + char dummy; + constexpr ResourceInitHelper() : resources() {} + ~ResourceInitHelper() {} +}; + +// Pretend we're inside a system header so the compiler doesn't flag the use of the init_priority +// attribute with a value that's reserved for the implementation (we're the implementation). +#include "memory_resource_init_helper.h" + +} // end namespace + + +memory_resource * new_delete_resource() noexcept { + return &res_init.resources.new_delete_res; +} + +memory_resource * null_memory_resource() noexcept { + return &res_init.resources.null_res; +} + +// default_memory_resource() + +static memory_resource * +__default_memory_resource(bool set = false, memory_resource * new_res = nullptr) noexcept +{ +#ifndef _LIBCPP_HAS_NO_ATOMIC_HEADER + static constinit atomic<memory_resource*> __res{&res_init.resources.new_delete_res}; + if (set) { + new_res = new_res ? new_res : new_delete_resource(); + // TODO: Can a weaker ordering be used? + return _VSTD::atomic_exchange_explicit( + &__res, new_res, memory_order_acq_rel); + } + else { + return _VSTD::atomic_load_explicit( + &__res, memory_order_acquire); + } +#elif !defined(_LIBCPP_HAS_NO_THREADS) + static constinit memory_resource *res = &res_init.resources.new_delete_res; + static mutex res_lock; + if (set) { + new_res = new_res ? new_res : new_delete_resource(); + lock_guard<mutex> guard(res_lock); + memory_resource * old_res = res; + res = new_res; + return old_res; + } else { + lock_guard<mutex> guard(res_lock); + return res; + } +#else + static constinit memory_resource *res = &res_init.resources.new_delete_res; + if (set) { + new_res = new_res ? new_res : new_delete_resource(); + memory_resource * old_res = res; + res = new_res; + return old_res; + } else { + return res; + } +#endif +} + +memory_resource * get_default_resource() noexcept +{ + return __default_memory_resource(); +} + +memory_resource * set_default_resource(memory_resource * __new_res) noexcept +{ + return __default_memory_resource(true, __new_res); +} + +_LIBCPP_END_NAMESPACE_LFTS_PMR diff --git a/contrib/libs/cxxsupp/libcxx/src/experimental/memory_resource_init_helper.h b/contrib/libs/cxxsupp/libcxx/src/experimental/memory_resource_init_helper.h new file mode 100644 index 00000000000..032edc12fa2 --- /dev/null +++ b/contrib/libs/cxxsupp/libcxx/src/experimental/memory_resource_init_helper.h @@ -0,0 +1,2 @@ +#pragma GCC system_header +static constinit ResourceInitHelper res_init _LIBCPP_INIT_PRIORITY_MAX; diff --git a/contrib/libs/cxxsupp/libcxx/src/filesystem/int128_builtins.cpp b/contrib/libs/cxxsupp/libcxx/src/filesystem/int128_builtins.cpp new file mode 100644 index 00000000000..96bcc5fa67e --- /dev/null +++ b/contrib/libs/cxxsupp/libcxx/src/filesystem/int128_builtins.cpp @@ -0,0 +1,54 @@ +/*===-- int128_builtins.cpp - Implement __muloti4 --------------------------=== + * + * 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 + * + * ===----------------------------------------------------------------------=== + * + * This file implements __muloti4, and is stolen from the compiler_rt library. + * + * FIXME: we steal and re-compile it into filesystem, which uses __int128_t, + * and requires this builtin when sanitized. See llvm.org/PR30643 + * + * ===----------------------------------------------------------------------=== + */ +#include <__config> +#include <climits> + +#if !defined(_LIBCPP_HAS_NO_INT128) + +extern "C" __attribute__((no_sanitize("undefined"))) _LIBCPP_EXPORTED_FROM_ABI +__int128_t __muloti4(__int128_t a, __int128_t b, int* overflow) { + const int N = (int)(sizeof(__int128_t) * CHAR_BIT); + const __int128_t MIN = (__int128_t)1 << (N - 1); + const __int128_t MAX = ~MIN; + *overflow = 0; + __int128_t result = a * b; + if (a == MIN) { + if (b != 0 && b != 1) + *overflow = 1; + return result; + } + if (b == MIN) { + if (a != 0 && a != 1) + *overflow = 1; + return result; + } + __int128_t sa = a >> (N - 1); + __int128_t abs_a = (a ^ sa) - sa; + __int128_t sb = b >> (N - 1); + __int128_t abs_b = (b ^ sb) - sb; + if (abs_a < 2 || abs_b < 2) + return result; + if (sa == sb) { + if (abs_a > MAX / abs_b) + *overflow = 1; + } else { + if (abs_a > MIN / -abs_b) + *overflow = 1; + } + return result; +} + +#endif diff --git a/contrib/libs/cxxsupp/libcxx/src/pstl/libdispatch.cpp b/contrib/libs/cxxsupp/libcxx/src/pstl/libdispatch.cpp new file mode 100644 index 00000000000..52d4afbcce6 --- /dev/null +++ b/contrib/libs/cxxsupp/libcxx/src/pstl/libdispatch.cpp @@ -0,0 +1,35 @@ +//===----------------------------------------------------------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +#include <__algorithm/min.h> +#include <__algorithm/pstl_backends/cpu_backends/libdispatch.h> +#include <__config> +#include <dispatch/dispatch.h> + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace __par_backend::inline __libdispatch { + +void __dispatch_apply(size_t chunk_count, void* context, void (*func)(void* context, size_t chunk)) noexcept { + ::dispatch_apply_f(chunk_count, DISPATCH_APPLY_AUTO, context, func); +} + +__chunk_partitions __partition_chunks(ptrdiff_t element_count) noexcept { + __chunk_partitions partitions; + partitions.__chunk_count_ = std::max<ptrdiff_t>(1, element_count / 256); + partitions.__chunk_size_ = element_count / partitions.__chunk_count_; + partitions.__first_chunk_size_ = element_count - (partitions.__chunk_count_ - 1) * partitions.__chunk_size_; + if (partitions.__chunk_count_ == 0 && element_count > 0) + partitions.__chunk_count_ = 1; + return partitions; +} + +// NOLINTNEXTLINE(llvm-namespace-comment) // This is https://llvm.org/PR56804 +} // namespace __par_backend::inline __libdispatch + +_LIBCPP_END_NAMESPACE_STD diff --git a/contrib/libs/cxxsupp/libcxx/src/support/ibm/mbsnrtowcs.cpp b/contrib/libs/cxxsupp/libcxx/src/support/ibm/mbsnrtowcs.cpp new file mode 100644 index 00000000000..6edc3c254de --- /dev/null +++ b/contrib/libs/cxxsupp/libcxx/src/support/ibm/mbsnrtowcs.cpp @@ -0,0 +1,95 @@ +//===----------------------------------------------------------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +#include <cstddef> // size_t +#include <cwchar> // mbstate_t +#include <limits.h> // MB_LEN_MAX +#include <string.h> // wmemcpy + +// Returns the number of wide characters found in the multi byte sequence `src` +// (of `src_size_bytes`), that fit in the buffer `dst` (of `max_dest_chars` +// elements size). The count returned excludes the null terminator. +// When `dst` is NULL, no characters are copied to `dst`. +// Returns (size_t) -1 when an invalid sequence is encountered. +// Leaves *`src` pointing to the next character to convert or NULL +// if a null character was converted from *`src`. +_LIBCPP_EXPORTED_FROM_ABI +size_t mbsnrtowcs(wchar_t *__restrict dst, const char **__restrict src, + size_t src_size_bytes, size_t max_dest_chars, + mbstate_t *__restrict ps) { + const size_t terminated_sequence = static_cast<size_t>(0); + const size_t invalid_sequence = static_cast<size_t>(-1); + const size_t incomplete_sequence = static_cast<size_t>(-2); + + size_t source_converted; + size_t dest_converted; + size_t result = 0; + + // If `dst` is null then `max_dest_chars` should be ignored according to the + // standard. Setting `max_dest_chars` to a large value has this effect. + if (dst == nullptr) + max_dest_chars = static_cast<size_t>(-1); + + for (dest_converted = source_converted = 0; + source_converted < src_size_bytes && (!dst || dest_converted < max_dest_chars); + ++dest_converted, source_converted += result) { + // Converts one multi byte character. + // If result (char_size) is greater than 0, it's the size in bytes of that character. + // If result (char_size) is zero, it indicates that the null character has been found. + // Otherwise, it's an error and errno may be set. + size_t source_remaining = src_size_bytes - source_converted; + size_t dest_remaining = max_dest_chars - dest_converted; + + if (dst == nullptr) { + result = mbrtowc(NULL, *src + source_converted, source_remaining, ps); + } else if (dest_remaining >= source_remaining) { + // dst has enough space to translate in-place. + result = mbrtowc(dst + dest_converted, *src + source_converted, source_remaining, ps); + } else { + /* + * dst may not have enough space, so use a temporary buffer. + * + * We need to save a copy of the conversion state + * here so we can restore it if the multibyte + * character is too long for the buffer. + */ + wchar_t buff[MB_LEN_MAX]; + mbstate_t mbstate_tmp; + + if (ps != nullptr) + mbstate_tmp = *ps; + result = mbrtowc(buff, *src + source_converted, source_remaining, ps); + + if (result > dest_remaining) { + // Multi-byte sequence for character won't fit. + if (ps != nullptr) + *ps = mbstate_tmp; + break; + } else { + // The buffer was used, so we need copy the translation to dst. + wmemcpy(dst, buff, result); + } + } + + // Don't do anything to change errno from here on. + if (result == invalid_sequence || result == terminated_sequence || result == incomplete_sequence) { + break; + } + } + + if (dst) { + if (result == terminated_sequence) + *src = NULL; + else + *src += source_converted; + } + if (result == invalid_sequence) + return invalid_sequence; + + return dest_converted; +} diff --git a/contrib/libs/cxxsupp/libcxx/src/support/ibm/wcsnrtombs.cpp b/contrib/libs/cxxsupp/libcxx/src/support/ibm/wcsnrtombs.cpp new file mode 100644 index 00000000000..d6333fe5f1f --- /dev/null +++ b/contrib/libs/cxxsupp/libcxx/src/support/ibm/wcsnrtombs.cpp @@ -0,0 +1,93 @@ +//===----------------------------------------------------------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +#include <cwchar> // mbstate_t +#include <limits.h> // MB_LEN_MAX +#include <stdlib.h> // MB_CUR_MAX, size_t +#include <string.h> // memcpy + +// Converts `max_source_chars` from the wide character buffer pointer to by *`src`, +// into the multi byte character sequence buffer stored at `dst`, which must be +// `dst_size_bytes` bytes in size. Returns the number of bytes in the sequence +// converted from *src, excluding the null terminator. +// Returns (size_t) -1 if an error occurs and sets errno. +// If `dst` is NULL, `dst_size_bytes` is ignored and no bytes are copied to `dst`. +_LIBCPP_EXPORTED_FROM_ABI +size_t wcsnrtombs(char *__restrict dst, const wchar_t **__restrict src, + size_t max_source_chars, size_t dst_size_bytes, + mbstate_t *__restrict ps) { + + const size_t invalid_wchar = static_cast<size_t>(-1); + + size_t source_converted; + size_t dest_converted; + size_t result = 0; + + // If `dst` is null then `dst_size_bytes` should be ignored according to the + // standard. Setting dst_size_bytes to a large value has this effect. + if (dst == nullptr) + dst_size_bytes = static_cast<size_t>(-1); + + for (dest_converted = source_converted = 0; + source_converted < max_source_chars && (!dst || dest_converted < dst_size_bytes); + ++source_converted, dest_converted += result) { + wchar_t c = (*src)[source_converted]; + size_t dest_remaining = dst_size_bytes - dest_converted; + + if (dst == nullptr) { + result = wcrtomb(NULL, c, ps); + } else if (dest_remaining >= static_cast<size_t>(MB_CUR_MAX)) { + // dst has enough space to translate in-place. + result = wcrtomb(dst + dest_converted, c, ps); + } else { + /* + * dst may not have enough space, so use a temporary buffer. + * + * We need to save a copy of the conversion state + * here so we can restore it if the multibyte + * character is too long for the buffer. + */ + char buff[MB_LEN_MAX]; + mbstate_t mbstate_tmp; + + if (ps != nullptr) + mbstate_tmp = *ps; + result = wcrtomb(buff, c, ps); + + if (result > dest_remaining) { + // Multi-byte sequence for character won't fit. + if (ps != nullptr) + *ps = mbstate_tmp; + if (result != invalid_wchar) + break; + } else { + // The buffer was used, so we need copy the translation to dst. + memcpy(dst, buff, result); + } + } + + // result (char_size) contains the size of the multi-byte-sequence converted. + // Otherwise, result (char_size) is (size_t) -1 and wcrtomb() sets the errno. + if (result == invalid_wchar) { + if (dst) + *src = *src + source_converted; + return invalid_wchar; + } + + if (c == L'\0') { + if (dst) + *src = NULL; + return dest_converted; + } + } + + if (dst) + *src = *src + source_converted; + + return dest_converted; +} diff --git a/contrib/libs/cxxsupp/libcxx/src/support/ibm/xlocale_zos.cpp b/contrib/libs/cxxsupp/libcxx/src/support/ibm/xlocale_zos.cpp new file mode 100644 index 00000000000..034a5b96605 --- /dev/null +++ b/contrib/libs/cxxsupp/libcxx/src/support/ibm/xlocale_zos.cpp @@ -0,0 +1,138 @@ +//===----------------------------------------------------------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +#include <__assert> +#include <__support/ibm/xlocale.h> +#include <sstream> +#include <vector> + +#ifdef __cplusplus +extern "C" { +#endif // __cplusplus + +locale_t newlocale(int category_mask, const char* locale, locale_t base) { + // Maintain current locale name(s) to restore later. + std::string current_loc_name(setlocale(LC_ALL, 0)); + + // Check for errors. + if (category_mask == LC_ALL_MASK && setlocale(LC_ALL, locale) == NULL) { + errno = EINVAL; + return (locale_t)0; + } else { + for (int _Cat = 0; _Cat <= _LC_MAX; ++_Cat) { + if ((_CATMASK(_Cat) & category_mask) != 0 && setlocale(_Cat, locale) == NULL) { + setlocale(LC_ALL, current_loc_name.c_str()); + errno = EINVAL; + return (locale_t)0; + } + } + } + + // Create new locale. + locale_t newloc = new locale_struct(); + + if (base) { + if (category_mask != LC_ALL_MASK) { + // Copy base when it will not be overwritten. + memcpy(newloc, base, sizeof (locale_struct)); + newloc->category_mask = category_mask | base->category_mask; + } + delete base; + } else { + newloc->category_mask = category_mask; + } + + if (category_mask & LC_COLLATE_MASK) + newloc->lc_collate = locale; + if (category_mask & LC_CTYPE_MASK) + newloc->lc_ctype = locale; + if (category_mask & LC_MONETARY_MASK) + newloc->lc_monetary = locale; + if (category_mask & LC_NUMERIC_MASK) + newloc->lc_numeric = locale; + if (category_mask & LC_TIME_MASK) + newloc->lc_time = locale; + if (category_mask & LC_MESSAGES_MASK) + newloc->lc_messages = locale; + + // Restore current locale. + setlocale(LC_ALL, current_loc_name.c_str()); + return (locale_t)newloc; +} + +void freelocale(locale_t locobj) { + delete locobj; +} + +locale_t uselocale(locale_t newloc) { + // Maintain current locale name(s). + std::string current_loc_name(setlocale(LC_ALL, 0)); + + if (newloc) { + // Set locales and check for errors. + bool is_error = + (newloc->category_mask & LC_COLLATE_MASK && + setlocale(LC_COLLATE, newloc->lc_collate.c_str()) == NULL) || + (newloc->category_mask & LC_CTYPE_MASK && + setlocale(LC_CTYPE, newloc->lc_ctype.c_str()) == NULL) || + (newloc->category_mask & LC_MONETARY_MASK && + setlocale(LC_MONETARY, newloc->lc_monetary.c_str()) == NULL) || + (newloc->category_mask & LC_NUMERIC_MASK && + setlocale(LC_NUMERIC, newloc->lc_numeric.c_str()) == NULL) || + (newloc->category_mask & LC_TIME_MASK && + setlocale(LC_TIME, newloc->lc_time.c_str()) == NULL) || + (newloc->category_mask & LC_MESSAGES_MASK && + setlocale(LC_MESSAGES, newloc->lc_messages.c_str()) == NULL); + + if (is_error) { + setlocale(LC_ALL, current_loc_name.c_str()); + errno = EINVAL; + return (locale_t)0; + } + } + + // Construct and return previous locale. + locale_t previous_loc = new locale_struct(); + + // current_loc_name might be a comma-separated locale name list. + if (current_loc_name.find(',') != std::string::npos) { + // Tokenize locale name list. + const char delimiter = ','; + std::vector<std::string> tokenized; + std::stringstream ss(current_loc_name); + std::string s; + + while (std::getline(ss, s, delimiter)) { + tokenized.push_back(s); + } + + _LIBCPP_ASSERT_UNCATEGORIZED(tokenized.size() >= _NCAT, "locale-name list is too short"); + + previous_loc->lc_collate = tokenized[LC_COLLATE]; + previous_loc->lc_ctype = tokenized[LC_CTYPE]; + previous_loc->lc_monetary = tokenized[LC_MONETARY]; + previous_loc->lc_numeric = tokenized[LC_NUMERIC]; + previous_loc->lc_time = tokenized[LC_TIME]; + // Skip LC_TOD. + previous_loc->lc_messages = tokenized[LC_MESSAGES]; + } else { + previous_loc->lc_collate = current_loc_name; + previous_loc->lc_ctype = current_loc_name; + previous_loc->lc_monetary = current_loc_name; + previous_loc->lc_numeric = current_loc_name; + previous_loc->lc_time = current_loc_name; + previous_loc->lc_messages = current_loc_name; + } + + previous_loc->category_mask = LC_ALL_MASK; + return previous_loc; +} + +#ifdef __cplusplus +} +#endif // __cplusplus |