d6832a611a
Many headers include `<cstddef>` just for size_t, and pulling in additional content (e.g. the traits used for std::byte) is unnecessary. To solve this problem, this patch splits up `<cstddef>` into subcomponents so that headers can include only the parts that they actually require. This has the added benefit of making the modules build a lot stricter with respect to IWYU, and also providing a canonical location where we define `std::size_t` and friends (which were previously defined in multiple headers like `<cstddef>` and `<ctime>`). After this patch, there's still many places in the codebase where we include `<cstddef>` when `<__cstddef/size_t.h>` would be sufficient. This patch focuses on removing `<cstddef>` includes from __type_traits to make these headers non-circular with `<cstddef>`. Additional refactorings can be tackled separately.
87 lines
2.1 KiB
C++
87 lines
2.1 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_CTIME
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#define _LIBCPP_CTIME
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/*
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ctime synopsis
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Macros:
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NULL
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CLOCKS_PER_SEC
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TIME_UTC // C++17
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namespace std
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{
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Types:
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clock_t
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size_t
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time_t
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tm
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timespec // C++17
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clock_t clock();
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double difftime(time_t time1, time_t time0);
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time_t mktime(tm* timeptr);
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time_t time(time_t* timer);
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char* asctime(const tm* timeptr);
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char* ctime(const time_t* timer);
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tm* gmtime(const time_t* timer);
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tm* localtime(const time_t* timer);
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size_t strftime(char* restrict s, size_t maxsize, const char* restrict format,
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const tm* restrict timeptr);
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int timespec_get( struct timespec *ts, int base); // C++17
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} // std
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*/
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#include <__config>
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#include <__cstddef/size_t.h>
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// <time.h> is not provided by libc++
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#if __has_include(<time.h>)
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# include <time.h>
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# ifdef _LIBCPP_TIME_H
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# error "If libc++ starts defining <time.h>, the __has_include check should move to libc++'s <time.h>"
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# endif
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#endif
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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using ::clock_t _LIBCPP_USING_IF_EXISTS;
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using ::time_t _LIBCPP_USING_IF_EXISTS;
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using ::tm _LIBCPP_USING_IF_EXISTS;
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#if _LIBCPP_STD_VER >= 17
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using ::timespec _LIBCPP_USING_IF_EXISTS;
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#endif
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using ::clock _LIBCPP_USING_IF_EXISTS;
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using ::difftime _LIBCPP_USING_IF_EXISTS;
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using ::mktime _LIBCPP_USING_IF_EXISTS;
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using ::time _LIBCPP_USING_IF_EXISTS;
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using ::asctime _LIBCPP_USING_IF_EXISTS;
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using ::ctime _LIBCPP_USING_IF_EXISTS;
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using ::gmtime _LIBCPP_USING_IF_EXISTS;
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using ::localtime _LIBCPP_USING_IF_EXISTS;
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using ::strftime _LIBCPP_USING_IF_EXISTS;
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#if _LIBCPP_STD_VER >= 17
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using ::timespec_get _LIBCPP_USING_IF_EXISTS;
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#endif
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_CTIME
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