mirror of
https://github.com/jart/cosmopolitan.git
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Upgrade to 2022-era LLVM LIBCXX
This commit is contained in:
Justine Tunney
parent
2f4ca71f26
commit
8e68384e15
2078 changed files with 165657 additions and 65010 deletions
251
third_party/libcxx/thread
vendored
251
third_party/libcxx/thread
vendored
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@ -1,5 +1,5 @@
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// -*- C++ -*-
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//===--------------------------- thread -----------------------------------===//
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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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@ -10,33 +10,6 @@
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#ifndef _LIBCPP_THREAD
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#define _LIBCPP_THREAD
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#include "third_party/libcxx/__config"
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#include "third_party/libcxx/iosfwd"
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#include "third_party/libcxx/__functional_base"
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#include "third_party/libcxx/type_traits"
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#include "third_party/libcxx/cstddef"
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#include "third_party/libcxx/functional"
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#include "third_party/libcxx/memory"
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#include "third_party/libcxx/system_error"
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#include "third_party/libcxx/chrono"
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#include "third_party/libcxx/__mutex_base"
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#ifndef _LIBCPP_CXX03_LANG
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#include "third_party/libcxx/tuple"
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#endif
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#include "third_party/libcxx/__threading_support"
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#include "third_party/libcxx/__debug"
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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_PUSH_MACROS
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#include "third_party/libcxx/__undef_macros"
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#ifndef _LIBCPP_HAS_NO_THREADS
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_LIBCPP_BEGIN_NAMESPACE_STD
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/*
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thread synopsis
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@ -80,16 +53,20 @@ public:
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};
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bool operator==(thread::id x, thread::id y) noexcept;
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bool operator!=(thread::id x, thread::id y) noexcept;
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bool operator< (thread::id x, thread::id y) noexcept;
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bool operator<=(thread::id x, thread::id y) noexcept;
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bool operator> (thread::id x, thread::id y) noexcept;
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bool operator>=(thread::id x, thread::id y) noexcept;
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bool operator!=(thread::id x, thread::id y) noexcept; // removed in C++20
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bool operator< (thread::id x, thread::id y) noexcept; // removed in C++20
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bool operator<=(thread::id x, thread::id y) noexcept; // removed in C++20
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bool operator> (thread::id x, thread::id y) noexcept; // removed in C++20
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bool operator>=(thread::id x, thread::id y) noexcept; // removed in C++20
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strong_ordering operator<=>(thread::id x, thread::id y) noexcept; // C++20
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template<class charT, class traits>
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basic_ostream<charT, traits>&
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operator<<(basic_ostream<charT, traits>& out, thread::id id);
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template<class charT>
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struct formatter<thread::id, charT>;
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namespace this_thread
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{
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@ -109,6 +86,54 @@ void sleep_for(const chrono::duration<Rep, Period>& rel_time);
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*/
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#include <__assert> // all public C++ headers provide the assertion handler
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#include <__availability>
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#include <__chrono/steady_clock.h>
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#include <__chrono/time_point.h>
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#include <__concepts/arithmetic.h>
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#include <__condition_variable/condition_variable.h>
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#include <__config>
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#include <__exception/terminate.h>
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#include <__format/concepts.h>
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#include <__format/format_parse_context.h>
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#include <__format/formatter.h>
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#include <__format/formatter_integral.h>
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#include <__format/parser_std_format_spec.h>
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#include <__functional/hash.h>
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#include <__functional/unary_function.h>
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#include <__memory/addressof.h>
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#include <__memory/unique_ptr.h>
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#include <__mutex/mutex.h>
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#include <__mutex/unique_lock.h>
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#include <__system_error/system_error.h>
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#include <__thread/poll_with_backoff.h>
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#include <__thread/timed_backoff_policy.h>
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#include <__threading_support>
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#include <__utility/forward.h>
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#include <cstddef>
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#include <cstdint>
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#include <iosfwd>
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#include <tuple>
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#include <version>
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// standard-mandated includes
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// [thread.syn]
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#include <compare>
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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_PUSH_MACROS
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#include <__undef_macros>
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#ifdef _LIBCPP_HAS_NO_THREADS
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# error "<thread> is not supported since libc++ has been configured without support for threads."
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class _Tp> class __thread_specific_ptr;
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class _LIBCPP_TYPE_VIS __thread_struct;
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class _LIBCPP_HIDDEN __thread_struct_imp;
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@ -191,12 +216,12 @@ __thread_specific_ptr<_Tp>::set_pointer(pointer __p)
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{
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_LIBCPP_ASSERT(get() == nullptr,
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"Attempting to overwrite thread local data");
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__libcpp_tls_set(__key_, __p);
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std::__libcpp_tls_set(__key_, __p);
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}
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template<>
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struct _LIBCPP_TEMPLATE_VIS hash<__thread_id>
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: public unary_function<__thread_id, size_t>
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: public __unary_function<__thread_id, size_t>
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{
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_LIBCPP_INLINE_VISIBILITY
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size_t operator()(__thread_id __v) const _NOEXCEPT
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@ -211,6 +236,46 @@ basic_ostream<_CharT, _Traits>&
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operator<<(basic_ostream<_CharT, _Traits>& __os, __thread_id __id)
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{return __os << __id.__id_;}
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#if _LIBCPP_STD_VER >= 23
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS formatter<__thread_id, _CharT> {
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public:
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template <class _ParseContext>
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_LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) {
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return __parser_.__parse(__ctx, __format_spec::__fields_fill_align_width);
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}
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template <class _FormatContext>
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_LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(__thread_id __id, _FormatContext& __ctx) const {
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// In __threading_support __libcpp_thread_id is either a
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// unsigned long long or a pthread_t.
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//
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// The type of pthread_t is left unspecified in POSIX so it can be any
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// type. The most logical types are an integral or pointer.
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// On Linux systems pthread_t is an unsigned long long.
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// On Apple systems pthread_t is a pointer type.
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//
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// Note the output should match what the stream operator does. Since
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// the ostream operator has been shipped years before this formatter
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// was added to the Standard, this formatter does what the stream
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// operator does. This may require platform specific changes.
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using _Tp = decltype(__get_underlying_id(__id));
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using _Cp = conditional_t<integral<_Tp>, _Tp, conditional_t<is_pointer_v<_Tp>, uintptr_t, void>>;
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static_assert(!is_same_v<_Cp, void>, "unsupported thread::id type, please file a bug report");
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__format_spec::__parsed_specifications<_CharT> __specs = __parser_.__get_parsed_std_specifications(__ctx);
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if constexpr (is_pointer_v<_Tp>) {
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__specs.__std_.__alternate_form_ = true;
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__specs.__std_.__type_ = __format_spec::__type::__hexadecimal_lower_case;
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}
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return __formatter::__format_integer(reinterpret_cast<_Cp>(__get_underlying_id(__id)), __ctx, __specs);
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}
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__format_spec::__parser<_CharT> __parser_{.__alignment_ = __format_spec::__alignment::__right};
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};
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#endif // _LIBCPP_STD_VER >= 23
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class _LIBCPP_TYPE_VIS thread
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{
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__libcpp_thread_t __t_;
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@ -225,11 +290,7 @@ public:
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thread() _NOEXCEPT : __t_(_LIBCPP_NULL_THREAD) {}
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#ifndef _LIBCPP_CXX03_LANG
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template <class _Fp, class ..._Args,
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class = typename enable_if
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<
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!is_same<typename __uncvref<_Fp>::type, thread>::value
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>::type
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>
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class = __enable_if_t<!is_same<__remove_cvref_t<_Fp>, thread>::value> >
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_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
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explicit thread(_Fp&& __f, _Args&&... __args);
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#else // _LIBCPP_CXX03_LANG
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@ -239,12 +300,19 @@ public:
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#endif
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~thread();
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#ifndef _LIBCPP_CXX03_LANG
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_LIBCPP_INLINE_VISIBILITY
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thread(thread&& __t) _NOEXCEPT : __t_(__t.__t_) {__t.__t_ = _LIBCPP_NULL_THREAD;}
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thread(thread&& __t) _NOEXCEPT : __t_(__t.__t_) {
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__t.__t_ = _LIBCPP_NULL_THREAD;
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}
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_LIBCPP_INLINE_VISIBILITY
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thread& operator=(thread&& __t) _NOEXCEPT;
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#endif // _LIBCPP_CXX03_LANG
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thread& operator=(thread&& __t) _NOEXCEPT {
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if (!__libcpp_thread_isnull(&__t_))
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terminate();
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__t_ = __t.__t_;
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__t.__t_ = _LIBCPP_NULL_THREAD;
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return *this;
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}
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_LIBCPP_INLINE_VISIBILITY
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void swap(thread& __t) _NOEXCEPT {_VSTD::swap(__t_, __t.__t_);}
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@ -268,17 +336,18 @@ inline _LIBCPP_INLINE_VISIBILITY
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void
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__thread_execute(tuple<_TSp, _Fp, _Args...>& __t, __tuple_indices<_Indices...>)
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{
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__invoke(_VSTD::move(_VSTD::get<1>(__t)), _VSTD::move(_VSTD::get<_Indices>(__t))...);
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_VSTD::__invoke(_VSTD::move(_VSTD::get<1>(__t)), _VSTD::move(_VSTD::get<_Indices>(__t))...);
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}
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template <class _Fp>
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_LIBCPP_INLINE_VISIBILITY
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void* __thread_proxy(void* __vp)
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{
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// _Fp = std::tuple< unique_ptr<__thread_struct>, Functor, Args...>
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std::unique_ptr<_Fp> __p(static_cast<_Fp*>(__vp));
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__thread_local_data().set_pointer(_VSTD::get<0>(*__p).release());
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// _Fp = tuple< unique_ptr<__thread_struct>, Functor, Args...>
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unique_ptr<_Fp> __p(static_cast<_Fp*>(__vp));
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__thread_local_data().set_pointer(_VSTD::get<0>(*__p.get()).release());
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typedef typename __make_tuple_indices<tuple_size<_Fp>::value, 2>::type _Index;
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__thread_execute(*__p, _Index());
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_VSTD::__thread_execute(*__p.get(), _Index());
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return nullptr;
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}
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@ -289,29 +358,18 @@ thread::thread(_Fp&& __f, _Args&&... __args)
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{
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typedef unique_ptr<__thread_struct> _TSPtr;
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_TSPtr __tsp(new __thread_struct);
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typedef tuple<_TSPtr, typename decay<_Fp>::type, typename decay<_Args>::type...> _Gp;
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_VSTD::unique_ptr<_Gp> __p(
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new _Gp(std::move(__tsp),
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__decay_copy(_VSTD::forward<_Fp>(__f)),
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__decay_copy(_VSTD::forward<_Args>(__args))...));
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int __ec = __libcpp_thread_create(&__t_, &__thread_proxy<_Gp>, __p.get());
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typedef tuple<_TSPtr, __decay_t<_Fp>, __decay_t<_Args>...> _Gp;
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unique_ptr<_Gp> __p(
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new _Gp(_VSTD::move(__tsp),
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_VSTD::forward<_Fp>(__f),
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_VSTD::forward<_Args>(__args)...));
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int __ec = _VSTD::__libcpp_thread_create(&__t_, &__thread_proxy<_Gp>, __p.get());
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if (__ec == 0)
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__p.release();
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else
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__throw_system_error(__ec, "thread constructor failed");
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}
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inline
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thread&
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thread::operator=(thread&& __t) _NOEXCEPT
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{
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if (!__libcpp_thread_isnull(&__t_))
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terminate();
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__t_ = __t.__t_;
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__t.__t_ = _LIBCPP_NULL_THREAD;
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return *this;
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}
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#else // _LIBCPP_CXX03_LANG
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template <class _Fp>
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@ -319,15 +377,15 @@ struct __thread_invoke_pair {
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// This type is used to pass memory for thread local storage and a functor
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// to a newly created thread because std::pair doesn't work with
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// std::unique_ptr in C++03.
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__thread_invoke_pair(_Fp& __f) : __tsp_(new __thread_struct), __fn_(__f) {}
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_LIBCPP_HIDE_FROM_ABI __thread_invoke_pair(_Fp& __f) : __tsp_(new __thread_struct), __fn_(__f) {}
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unique_ptr<__thread_struct> __tsp_;
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_Fp __fn_;
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};
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template <class _Fp>
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void* __thread_proxy_cxx03(void* __vp)
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_LIBCPP_HIDE_FROM_ABI void* __thread_proxy_cxx03(void* __vp)
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{
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std::unique_ptr<_Fp> __p(static_cast<_Fp*>(__vp));
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unique_ptr<_Fp> __p(static_cast<_Fp*>(__vp));
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__thread_local_data().set_pointer(__p->__tsp_.release());
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(__p->__fn_)();
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return nullptr;
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@ -338,16 +396,16 @@ thread::thread(_Fp __f)
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{
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typedef __thread_invoke_pair<_Fp> _InvokePair;
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typedef std::unique_ptr<_InvokePair> _PairPtr;
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typedef unique_ptr<_InvokePair> _PairPtr;
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_PairPtr __pp(new _InvokePair(__f));
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int __ec = __libcpp_thread_create(&__t_, &__thread_proxy_cxx03<_InvokePair>, __pp.get());
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int __ec = _VSTD::__libcpp_thread_create(&__t_, &__thread_proxy_cxx03<_InvokePair>, __pp.get());
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if (__ec == 0)
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__pp.release();
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else
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__throw_system_error(__ec, "thread constructor failed");
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}
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#endif // _LIBCPP_CXX03_LANG
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#endif // _LIBCPP_CXX03_LANG
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inline _LIBCPP_INLINE_VISIBILITY
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void swap(thread& __x, thread& __y) _NOEXCEPT {__x.swap(__y);}
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@ -358,36 +416,33 @@ namespace this_thread
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_LIBCPP_FUNC_VIS void sleep_for(const chrono::nanoseconds& __ns);
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template <class _Rep, class _Period>
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void
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_LIBCPP_HIDE_FROM_ABI void
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sleep_for(const chrono::duration<_Rep, _Period>& __d)
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{
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using namespace chrono;
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if (__d > duration<_Rep, _Period>::zero())
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if (__d > chrono::duration<_Rep, _Period>::zero())
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{
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#if defined(_LIBCPP_COMPILER_GCC) && (__powerpc__ || __POWERPC__)
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// GCC's long double const folding is incomplete for IBM128 long doubles.
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_LIBCPP_CONSTEXPR duration<long double> _Max = nanoseconds::max();
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#else
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_LIBCPP_CONSTEXPR duration<long double> _Max = duration<long double>(ULLONG_MAX/1000000000ULL) ;
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#endif
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nanoseconds __ns;
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if (__d < _Max)
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// The standard guarantees a 64bit signed integer resolution for nanoseconds,
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// so use INT64_MAX / 1e9 as cut-off point. Use a constant to avoid <climits>
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// and issues with long double folding on PowerPC with GCC.
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_LIBCPP_CONSTEXPR chrono::duration<long double> __max =
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chrono::duration<long double>(9223372036.0L);
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chrono::nanoseconds __ns;
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if (__d < __max)
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{
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__ns = duration_cast<nanoseconds>(__d);
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__ns = chrono::duration_cast<chrono::nanoseconds>(__d);
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if (__ns < __d)
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++__ns;
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}
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else
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__ns = nanoseconds::max();
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sleep_for(__ns);
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__ns = chrono::nanoseconds::max();
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this_thread::sleep_for(__ns);
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}
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}
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template <class _Clock, class _Duration>
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void
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_LIBCPP_HIDE_FROM_ABI void
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sleep_until(const chrono::time_point<_Clock, _Duration>& __t)
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{
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using namespace chrono;
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mutex __mut;
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condition_variable __cv;
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unique_lock<mutex> __lk(__mut);
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@ -400,19 +455,27 @@ inline _LIBCPP_INLINE_VISIBILITY
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void
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sleep_until(const chrono::time_point<chrono::steady_clock, _Duration>& __t)
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{
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using namespace chrono;
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sleep_for(__t - steady_clock::now());
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this_thread::sleep_for(__t - chrono::steady_clock::now());
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}
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inline _LIBCPP_INLINE_VISIBILITY
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void yield() _NOEXCEPT {__libcpp_thread_yield();}
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} // this_thread
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} // namespace this_thread
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_LIBCPP_END_NAMESPACE_STD
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#endif // !_LIBCPP_HAS_NO_THREADS
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_LIBCPP_POP_MACROS
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#endif // _LIBCPP_THREAD
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#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 17
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# include <chrono>
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#endif
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#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
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# include <cstring>
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# include <functional>
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# include <new>
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# include <system_error>
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#endif
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#endif // _LIBCPP_THREAD
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