131 lines
3.0 KiB
C++
131 lines
3.0 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022
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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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#pragma once
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#include "td/utils/port/config.h"
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#ifdef TD_THREAD_STL
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#include "td/utils/common.h"
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#include "td/utils/invoke.h"
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#include "td/utils/port/detail/ThreadIdGuard.h"
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#include "td/utils/port/thread_local.h"
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#include "td/utils/Slice.h"
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#include "td/utils/Status.h"
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#include <thread>
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#include <tuple>
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#include <type_traits>
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#include <utility>
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namespace td {
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namespace detail {
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class ThreadStl {
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public:
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ThreadStl() = default;
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ThreadStl(const ThreadStl &other) = delete;
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ThreadStl &operator=(const ThreadStl &other) = delete;
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ThreadStl(ThreadStl &&) = default;
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ThreadStl &operator=(ThreadStl &&) = default;
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~ThreadStl() {
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join();
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}
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template <class Function, class... Args>
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explicit ThreadStl(Function &&f, Args &&...args) {
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thread_ = std::thread([args = std::make_tuple(decay_copy(std::forward<Function>(f)),
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decay_copy(std::forward<Args>(args))...)]() mutable {
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ThreadIdGuard thread_id_guard;
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invoke_tuple(std::move(args));
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clear_thread_locals();
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});
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}
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void join() {
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if (thread_.joinable()) {
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thread_.join();
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}
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}
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void detach() {
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if (thread_.joinable()) {
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thread_.detach();
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}
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}
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void set_name(CSlice name) {
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// not supported
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}
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static unsigned hardware_concurrency() {
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return std::thread::hardware_concurrency();
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}
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#if TD_WINDOWS
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using id = HANDLE;
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#else
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using id = std::thread::id;
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#endif
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static void send_real_time_signal(id thread_id, int real_time_signal_number) {
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// not supported
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}
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static Status set_affinity_mask(id thread_id, uint64 mask) {
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#if TD_WINDOWS
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if (static_cast<DWORD_PTR>(mask) != mask) {
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return Status::Error("Invalid thread affinity mask specified");
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}
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if (SetThreadAffinityMask(thread_id, static_cast<DWORD_PTR>(mask))) {
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return Status::OK();
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}
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return OS_ERROR("Failed to set thread affinity mask");
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#else
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return Status::Error("Unsupported");
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#endif
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}
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static uint64 get_affinity_mask(id thread_id) {
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#if TD_WINDOWS
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DWORD_PTR process_mask = 0;
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DWORD_PTR system_mask = 0;
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if (GetProcessAffinityMask(GetCurrentProcess(), &process_mask, &system_mask)) {
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auto result = SetThreadAffinityMask(thread_id, process_mask);
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if (result != 0 && result != process_mask) {
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SetThreadAffinityMask(thread_id, result);
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}
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return result;
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}
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#endif
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return 0;
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}
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private:
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std::thread thread_;
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template <class T>
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std::decay_t<T> decay_copy(T &&v) {
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return std::forward<T>(v);
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}
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};
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namespace this_thread_stl {
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#if TD_WINDOWS
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inline ThreadStl::id get_id() {
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return GetCurrentThread();
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}
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#else
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using std::this_thread::get_id;
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#endif
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} // namespace this_thread_stl
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} // namespace detail
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} // namespace td
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#endif
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