Remove old code

Signed-off-by: Richard Qin <richard.qin.x@gmail.com>

1 files changed, 0 insertions, 189 deletions

diff --git a/third_party/libcxx/include/c++/v1/semaphore b/third_party/libcxx/include/c++/v1/semaphore
deleted file mode 100644
index d411d20..0000000
--- a/third_party/libcxx/include/c++/v1/semaphore
+++ /dev/null
@@ -1,189 +0,0 @@
-// -*- 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_SEMAPHORE
-#define _LIBCPP_SEMAPHORE
-
-/*
-    semaphore synopsis
-
-namespace std {
-
-template<ptrdiff_t least_max_value = implementation-defined>
-class counting_semaphore                          // since C++20
-{
-public:
-static constexpr ptrdiff_t max() noexcept;
-
-constexpr explicit counting_semaphore(ptrdiff_t desired);
-~counting_semaphore();
-
-counting_semaphore(const counting_semaphore&) = delete;
-counting_semaphore& operator=(const counting_semaphore&) = delete;
-
-void release(ptrdiff_t update = 1);
-void acquire();
-bool try_acquire() noexcept;
-template<class Rep, class Period>
-    bool try_acquire_for(const chrono::duration<Rep, Period>& rel_time);
-template<class Clock, class Duration>
-    bool try_acquire_until(const chrono::time_point<Clock, Duration>& abs_time);
-
-private:
-ptrdiff_t counter; // exposition only
-};
-
-using binary_semaphore = counting_semaphore<1>; // since C++20
-
-}
-
-*/
-
-#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
-#  include <__cxx03/__config>
-#else
-#  include <__config>
-
-#  if _LIBCPP_HAS_THREADS
-
-#    include <__assert>
-#    include <__atomic/atomic.h>
-#    include <__atomic/atomic_sync.h>
-#    include <__atomic/atomic_sync_timed.h>
-#    include <__atomic/memory_order.h>
-#    include <__chrono/time_point.h>
-#    include <__cstddef/ptrdiff_t.h>
-#    include <__thread/support.h>
-#    include <limits>
-#    include <version>
-
-#    if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#      pragma GCC system_header
-#    endif
-
-_LIBCPP_PUSH_MACROS
-#    include <__undef_macros>
-
-#    if _LIBCPP_STD_VER >= 20
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-/*
-
-__atomic_semaphore_base is the general-case implementation.
-It is a typical Dijkstra semaphore algorithm over atomics, wait and notify
-functions. It avoids contention against users' own use of those facilities.
-
-*/
-
-#      define _LIBCPP_SEMAPHORE_MAX (numeric_limits<ptrdiff_t>::max())
-
-class __atomic_semaphore_base {
-  atomic<ptrdiff_t> __a_;
-
-public:
-  _LIBCPP_HIDE_FROM_ABI constexpr explicit __atomic_semaphore_base(ptrdiff_t __count) : __a_(__count) {}
-  _LIBCPP_HIDE_FROM_ABI void release(ptrdiff_t __update = 1) {
-    auto __old = __a_.fetch_add(__update, memory_order_release);
-    _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
-        __update <= _LIBCPP_SEMAPHORE_MAX - __old, "update is greater than the expected value");
-    if (__old == 0) {
-      __a_.notify_all();
-    }
-  }
-  _LIBCPP_HIDE_FROM_ABI void acquire() {
-    std::__atomic_wait_unless(__a_, memory_order_relaxed, [this](ptrdiff_t& __old) {
-      return __try_acquire_impl(__old);
-    });
-  }
-  template <class _Rep, class _Period>
-  _LIBCPP_HIDE_FROM_ABI bool try_acquire_for(chrono::duration<_Rep, _Period> const& __rel_time) {
-    if (__rel_time == chrono::duration<_Rep, _Period>::zero())
-      return try_acquire();
-
-    return std::__atomic_wait_unless_with_timeout(
-        __a_, memory_order_relaxed, [this](ptrdiff_t& __old) { return __try_acquire_impl(__old); }, __rel_time);
-  }
-  _LIBCPP_HIDE_FROM_ABI bool try_acquire() {
-    auto __old = __a_.load(memory_order_relaxed);
-    return __try_acquire_impl(__old);
-  }
-
-private:
-  _LIBCPP_HIDE_FROM_ABI bool __try_acquire_impl(ptrdiff_t& __old) {
-    while (true) {
-      if (__old == 0)
-        return false;
-      if (__a_.compare_exchange_weak(__old, __old - 1, memory_order_acquire, memory_order_relaxed))
-        return true;
-    }
-  }
-};
-
-template <ptrdiff_t __least_max_value = _LIBCPP_SEMAPHORE_MAX>
-class counting_semaphore {
-  __atomic_semaphore_base __semaphore_;
-
-public:
-  static_assert(__least_max_value >= 0, "The least maximum value must be a positive number");
-
-  [[nodiscard]] static constexpr ptrdiff_t max() noexcept { return __least_max_value; }
-
-  _LIBCPP_HIDE_FROM_ABI constexpr explicit counting_semaphore(ptrdiff_t __count) : __semaphore_(__count) {
-    _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
-        __count >= 0,
-        "counting_semaphore::counting_semaphore(ptrdiff_t): counting_semaphore cannot be "
-        "initialized with a negative value");
-    _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
-        __count <= max(),
-        "counting_semaphore::counting_semaphore(ptrdiff_t): counting_semaphore cannot be "
-        "initialized with a value greater than max()");
-  }
-  ~counting_semaphore() = default;
-
-  counting_semaphore(const counting_semaphore&)            = delete;
-  counting_semaphore& operator=(const counting_semaphore&) = delete;
-
-  _LIBCPP_HIDE_FROM_ABI void release(ptrdiff_t __update = 1) {
-    _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(__update >= 0, "counting_semaphore:release called with a negative value");
-    __semaphore_.release(__update);
-  }
-  _LIBCPP_HIDE_FROM_ABI void acquire() { __semaphore_.acquire(); }
-  template <class _Rep, class _Period>
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool try_acquire_for(chrono::duration<_Rep, _Period> const& __rel_time) {
-    return __semaphore_.try_acquire_for(chrono::duration_cast<chrono::nanoseconds>(__rel_time));
-  }
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool try_acquire() { return __semaphore_.try_acquire(); }
-  template <class _Clock, class _Duration>
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool try_acquire_until(chrono::time_point<_Clock, _Duration> const& __abs_time) {
-    auto const __current = _Clock::now();
-    if (__current >= __abs_time)
-      return try_acquire();
-    else
-      return try_acquire_for(__abs_time - __current);
-  }
-};
-
-using binary_semaphore = counting_semaphore<1>;
-
-_LIBCPP_END_NAMESPACE_STD
-
-#    endif // _LIBCPP_STD_VER >= 20
-
-_LIBCPP_POP_MACROS
-
-#  endif // _LIBCPP_HAS_THREADS
-
-#  if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
-#    include <atomic>
-#    include <cstddef>
-#  endif
-#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
-
-#endif // _LIBCPP_SEMAPHORE