vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
136 lines
3.9 KiB
C++
136 lines
3.9 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_LATCH
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#define _LIBCPP_LATCH
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/*
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latch synopsis
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namespace std
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{
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class latch // since C++20
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{
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public:
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static constexpr ptrdiff_t max() noexcept;
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constexpr explicit latch(ptrdiff_t __expected);
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~latch();
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latch(const latch&) = delete;
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latch& operator=(const latch&) = delete;
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void count_down(ptrdiff_t __update = 1);
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bool try_wait() const noexcept;
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void wait() const;
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void arrive_and_wait(ptrdiff_t __update = 1);
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private:
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ptrdiff_t __counter; // exposition only
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};
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}
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*/
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#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
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# include <__cxx03/__config>
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#else
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# include <__config>
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# if _LIBCPP_HAS_THREADS
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# include <__assert>
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# include <__atomic/atomic.h>
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# include <__atomic/atomic_sync.h>
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# include <__atomic/memory_order.h>
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# include <__cstddef/ptrdiff_t.h>
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# include <limits>
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# include <version>
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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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# if _LIBCPP_STD_VER >= 20
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_LIBCPP_BEGIN_NAMESPACE_STD
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class latch {
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atomic<ptrdiff_t> __a_;
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public:
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static _LIBCPP_HIDE_FROM_ABI constexpr ptrdiff_t max() noexcept { return numeric_limits<ptrdiff_t>::max(); }
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inline _LIBCPP_HIDE_FROM_ABI constexpr explicit latch(ptrdiff_t __expected) : __a_(__expected) {
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_LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
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__expected >= 0,
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"latch::latch(ptrdiff_t): latch cannot be "
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"initialized with a negative value");
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_LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
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__expected <= max(),
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"latch::latch(ptrdiff_t): latch cannot be "
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"initialized with a value greater than max()");
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}
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_LIBCPP_HIDE_FROM_ABI ~latch() = default;
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latch(const latch&) = delete;
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latch& operator=(const latch&) = delete;
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inline _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void count_down(ptrdiff_t __update = 1) {
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_LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(__update >= 0, "latch::count_down called with a negative value");
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auto const __old = __a_.fetch_sub(__update, memory_order_release);
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_LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
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__update <= __old,
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"latch::count_down called with a value greater "
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"than the internal counter");
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if (__old == __update)
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__a_.notify_all();
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}
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inline _LIBCPP_HIDE_FROM_ABI bool try_wait() const noexcept {
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auto __value = __a_.load(memory_order_acquire);
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return try_wait_impl(__value);
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}
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inline _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void wait() const {
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std::__atomic_wait_unless(__a_, memory_order_acquire, [this](ptrdiff_t& __value) -> bool {
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return try_wait_impl(__value);
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});
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}
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inline _LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void arrive_and_wait(ptrdiff_t __update = 1) {
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_LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(__update >= 0, "latch::arrive_and_wait called with a negative value");
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// other preconditions on __update are checked in count_down()
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count_down(__update);
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wait();
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}
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private:
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_LIBCPP_HIDE_FROM_ABI bool try_wait_impl(ptrdiff_t& __value) const noexcept { return __value == 0; }
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};
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_LIBCPP_END_NAMESPACE_STD
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# endif // _LIBCPP_STD_VER >= 20
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_LIBCPP_POP_MACROS
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# endif // _LIBCPP_HAS_THREADS
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# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
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# include <atomic>
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# include <cstddef>
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# endif
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#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
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#endif // _LIBCPP_LATCH
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