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minetest/src/threads.h
sfan5 0a16e53b40 Fix C++11 Windows build of threading code
The initial problem was that mutex_auto_lock.h tries to use std::unique_lock<std::mutex>
	despite mutex.h not using C++11's std::mutex on Windows. The problem here is the mismatch
	between C++11 usage conditions of the two headers. This commit moves the decision logic
	to threads.h and makes sure mutex.h, mutex_auto_lock.h and event.h all use the same features.
2016-10-06 22:37:30 +02:00

111 lines
2.5 KiB
C++

/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef THREADS_HEADER
#define THREADS_HEADER
//
// Determine which threading APIs we will use
//
#if __cplusplus >= 201103L
#define USE_CPP11_THREADS 1
#elif defined(_WIN32)
#define USE_WIN_THREADS 1
#else
#define USE_POSIX_THREADS 1
#endif
#if defined(_WIN32)
// Prefer critical section API because std::mutex is much slower on Windows
#define USE_WIN_MUTEX 1
#elif __cplusplus >= 201103L
#define USE_CPP11_MUTEX 1
#else
#define USE_POSIX_MUTEX 1
#endif
///////////////
#if USE_CPP11_THREADS
#include <thread>
#elif USE_POSIX_THREADS
#include <pthread.h>
#else
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#endif
#include "threading/mutex.h"
//
// threadid_t, threadhandle_t
//
#if USE_CPP11_THREADS
typedef std::thread::id threadid_t;
typedef std::thread::native_handle_type threadhandle_t;
#elif USE_WIN_THREADS
typedef DWORD threadid_t;
typedef HANDLE threadhandle_t;
#elif USE_POSIX_THREADS
typedef pthread_t threadid_t;
typedef pthread_t threadhandle_t;
#endif
//
// ThreadStartFunc
//
#if USE_CPP11_THREADS || USE_POSIX_THREADS
typedef void *ThreadStartFunc(void *param);
#elif defined(_WIN32_WCE)
typedef DWORD ThreadStartFunc(LPVOID param);
#elif defined(_WIN32)
typedef DWORD WINAPI ThreadStartFunc(LPVOID param);
#endif
inline threadid_t thr_get_current_thread_id()
{
#if USE_CPP11_THREADS
return std::this_thread::get_id();
#elif USE_WIN_THREADS
return GetCurrentThreadId();
#elif USE_POSIX_THREADS
return pthread_self();
#endif
}
inline bool thr_compare_thread_id(threadid_t thr1, threadid_t thr2)
{
#if USE_POSIX_THREADS
return pthread_equal(thr1, thr2);
#else
return thr1 == thr2;
#endif
}
inline bool thr_is_current_thread(threadid_t thr)
{
return thr_compare_thread_id(thr_get_current_thread_id(), thr);
}
#endif