d8fc2db910
The "::" to explicitly refer to the global namespace appeared like a good idea in C++, but it breaks with C libraries that implement standard functions using macros (e.g. musl).
100 lines
2.0 KiB
C++
100 lines
2.0 KiB
C++
/*
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* Copyright (C) 2003-2013 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_THREAD_ID_HXX
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#define MPD_THREAD_ID_HXX
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#include "Compiler.h"
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#ifdef WIN32
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#include <windows.h>
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#else
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#include <pthread.h>
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#endif
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/**
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* A low-level identification for a thread. Designed to work with
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* existing threads, such as the main thread. Mostly useful for
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* debugging code.
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*/
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class ThreadId {
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#ifdef WIN32
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DWORD id;
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#else
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pthread_t id;
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#endif
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public:
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/**
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* No initialisation.
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*/
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ThreadId() = default;
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#ifdef WIN32
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constexpr ThreadId(DWORD _id):id(_id) {}
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#else
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constexpr ThreadId(pthread_t _id):id(_id) {}
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#endif
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gcc_const
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static ThreadId Null() {
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#ifdef WIN32
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return 0;
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#else
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static ThreadId null;
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return null;
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#endif
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}
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gcc_pure
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bool IsNull() const {
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return *this == Null();
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}
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/**
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* Return the current thread's id .
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*/
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gcc_pure
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static const ThreadId GetCurrent() {
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#ifdef WIN32
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return ::GetCurrentThreadId();
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#else
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return pthread_self();
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#endif
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}
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gcc_pure
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bool operator==(const ThreadId &other) const {
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#ifdef WIN32
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return id == other.id;
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#else
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return pthread_equal(id, other.id);
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#endif
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}
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/**
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* Check if this thread is the current thread.
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*/
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bool IsInside() const {
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return *this == GetCurrent();
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}
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};
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#endif
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