mirror of
https://github.com/azahar-emu/ext-boost
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103 lines
2.0 KiB
C++
103 lines
2.0 KiB
C++
//
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// Copyright (c) 2022 Vinnie Falco (vinnie.falco@gmail.com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// Official repository: https://github.com/boostorg/url
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//
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#ifndef BOOST_URL_GRAMMAR_DETAIL_IMPL_RECYCLED_IPP
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#define BOOST_URL_GRAMMAR_DETAIL_IMPL_RECYCLED_IPP
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#include <cstdlib>
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#include <utility>
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#include <atomic>
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#ifdef BOOST_URL_REPORT
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# ifdef _MSC_VER
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# include <intrin.h>
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# endif
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#endif
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namespace boost {
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namespace urls {
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namespace grammar {
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namespace detail {
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struct all_reports
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{
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// current count
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std::atomic<std::size_t> count = {0};
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// current bytes
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std::atomic<std::size_t> bytes = {0};
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// highest total ptr count
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std::atomic<std::size_t> count_max = {0};
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// highest total bytes
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std::atomic<std::size_t> bytes_max = {0};
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// largest single allocation
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std::atomic<std::size_t> alloc_max = {0};
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~all_reports()
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{
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// breakpoint here to view report
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#ifdef BOOST_URL_REPORT
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# ifdef _MSC_VER
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if(count_max > 0)
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::__debugbreak();
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# endif
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#endif
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}
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};
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static all_reports all_reports_;
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void
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recycled_add_impl(
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std::size_t n) noexcept
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{
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auto& a = all_reports_;
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std::size_t new_count = ++a.count;
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std::size_t old_count_max = a.count_max;
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while (
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old_count_max < new_count &&
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!a.count_max.compare_exchange_weak(
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old_count_max, new_count))
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{}
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std::size_t new_bytes = a.bytes.fetch_add(n) + n;
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std::size_t old_bytes_max = a.bytes_max;
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while (
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old_bytes_max < new_bytes &&
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!a.bytes_max.compare_exchange_weak(
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old_bytes_max, new_bytes))
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{}
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std::size_t old_alloc_max = a.alloc_max;
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while (
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old_alloc_max < n &&
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!a.alloc_max.compare_exchange_weak(
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old_alloc_max, n))
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{}
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}
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void
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recycled_remove_impl(
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std::size_t n) noexcept
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{
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all_reports_.count--;
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all_reports_.bytes-=n;
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}
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} // detail
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} // grammar
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} // urls
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} // boost
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#endif
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