Remove old code

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

1 files changed, 0 insertions, 137 deletions

diff --git a/third_party/libcxx/include/c++/v1/latch b/third_party/libcxx/include/c++/v1/latch
deleted file mode 100644
index 33268d9..0000000
--- a/third_party/libcxx/include/c++/v1/latch
+++ /dev/null
@@ -1,137 +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_LATCH
-#define _LIBCPP_LATCH
-
-/*
-    latch synopsis
-
-namespace std
-{
-
-  class latch                                     // since C++20
-  {
-  public:
-    static constexpr ptrdiff_t max() noexcept;
-
-    constexpr explicit latch(ptrdiff_t __expected);
-    ~latch();
-
-    latch(const latch&) = delete;
-    latch& operator=(const latch&) = delete;
-
-    void count_down(ptrdiff_t __update = 1);
-    bool try_wait() const noexcept;
-    void wait() const;
-    void arrive_and_wait(ptrdiff_t __update = 1);
-
-  private:
-    ptrdiff_t __counter; // exposition only
-  };
-
-}
-
-*/
-
-#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/memory_order.h>
-#    include <__cstddef/ptrdiff_t.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
-
-class latch {
-  atomic<ptrdiff_t> __a_;
-
-public:
-  [[nodiscard]] static _LIBCPP_HIDE_FROM_ABI constexpr ptrdiff_t max() noexcept {
-    return numeric_limits<ptrdiff_t>::max();
-  }
-
-  inline _LIBCPP_HIDE_FROM_ABI constexpr explicit latch(ptrdiff_t __expected) : __a_(__expected) {
-    _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
-        __expected >= 0,
-        "latch::latch(ptrdiff_t): latch cannot be "
-        "initialized with a negative value");
-    _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
-        __expected <= max(),
-        "latch::latch(ptrdiff_t): latch cannot be "
-        "initialized with a value greater than max()");
-  }
-
-  _LIBCPP_HIDE_FROM_ABI ~latch() = default;
-  latch(const latch&)            = delete;
-  latch& operator=(const latch&) = delete;
-
-  inline _LIBCPP_HIDE_FROM_ABI void count_down(ptrdiff_t __update = 1) {
-    _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(__update >= 0, "latch::count_down called with a negative value");
-    auto const __old = __a_.fetch_sub(__update, memory_order_release);
-    _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
-        __update <= __old,
-        "latch::count_down called with a value greater "
-        "than the internal counter");
-    if (__old == __update)
-      __a_.notify_all();
-  }
-  [[nodiscard]] inline _LIBCPP_HIDE_FROM_ABI bool try_wait() const noexcept {
-    auto __value = __a_.load(memory_order_acquire);
-    return try_wait_impl(__value);
-  }
-  inline _LIBCPP_HIDE_FROM_ABI void wait() const {
-    std::__atomic_wait_unless(__a_, memory_order_acquire, [this](ptrdiff_t& __value) -> bool {
-      return try_wait_impl(__value);
-    });
-  }
-  inline _LIBCPP_HIDE_FROM_ABI void arrive_and_wait(ptrdiff_t __update = 1) {
-    _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(__update >= 0, "latch::arrive_and_wait called with a negative value");
-    // other preconditions on __update are checked in count_down()
-
-    count_down(__update);
-    wait();
-  }
-
-private:
-  _LIBCPP_HIDE_FROM_ABI bool try_wait_impl(ptrdiff_t& __value) const noexcept { return __value == 0; }
-};
-
-_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_LATCH