75 lines
2.2 KiB
C++
75 lines
2.2 KiB
C++
/*
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Stockfish, a UCI chess playing engine derived from Glaurung 2.1
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Copyright (C) 2004-2021 The Stockfish developers (see AUTHORS file)
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Stockfish 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 3 of the License, or
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(at your option) any later version.
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Stockfish 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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef THREAD_WIN32_OSX_H_INCLUDED
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#define THREAD_WIN32_OSX_H_INCLUDED
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#include <thread>
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/// On OSX threads other than the main thread are created with a reduced stack
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/// size of 512KB by default, this is too low for deep searches, which require
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/// somewhat more than 1MB stack, so adjust it to TH_STACK_SIZE.
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/// The implementation calls pthread_create() with the stack size parameter
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/// equal to the linux 8MB default, on platforms that support it.
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#if defined(__APPLE__) || defined(__MINGW32__) || defined(__MINGW64__) || defined(USE_PTHREADS)
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#include <pthread.h>
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namespace Stockfish {
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static const size_t TH_STACK_SIZE = 8 * 1024 * 1024;
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template <class T, class P = std::pair<T*, void(T::*)()>>
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void* start_routine(void* ptr)
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{
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P* p = reinterpret_cast<P*>(ptr);
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(p->first->*(p->second))(); // Call member function pointer
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delete p;
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return NULL;
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}
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class NativeThread {
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pthread_t thread;
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public:
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template<class T, class P = std::pair<T*, void(T::*)()>>
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explicit NativeThread(void(T::*fun)(), T* obj) {
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pthread_attr_t attr_storage, *attr = &attr_storage;
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pthread_attr_init(attr);
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pthread_attr_setstacksize(attr, TH_STACK_SIZE);
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pthread_create(&thread, attr, start_routine<T>, new P(obj, fun));
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}
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void join() { pthread_join(thread, NULL); }
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};
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} // namespace Stockfish
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#else // Default case: use STL classes
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namespace Stockfish {
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typedef std::thread NativeThread;
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} // namespace Stockfish
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#endif
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#endif // #ifndef THREAD_WIN32_OSX_H_INCLUDED
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