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2d0237db3f
This introduces clang-format to enforce a consistent code style for Stockfish. Having a documented and consistent style across the code will make contributing easier for new developers, and will make larger changes to the codebase easier to make. To facilitate formatting, this PR includes a Makefile target (`make format`) to format the code, this requires clang-format (version 17 currently) to be installed locally. Installing clang-format is straightforward on most OS and distros (e.g. with https://apt.llvm.org/, brew install clang-format, etc), as this is part of quite commonly used suite of tools and compilers (llvm / clang). Additionally, a CI action is present that will verify if the code requires formatting, and comment on the PR as needed. Initially, correct formatting is not required, it will be done by maintainers as part of the merge or in later commits, but obviously this is encouraged. fixes https://github.com/official-stockfish/Stockfish/issues/3608 closes https://github.com/official-stockfish/Stockfish/pull/4790 Co-Authored-By: Joost VandeVondele <Joost.VandeVondele@gmail.com>
74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
/*
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Stockfish, a UCI chess playing engine derived from Glaurung 2.1
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Copyright (C) 2004-2023 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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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 nullptr;
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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, nullptr); }
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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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using NativeThread = std::thread;
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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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