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Member "stockfish-11-linux/src/thread_win32_osx.h" (18 Jan 2020, 2291 Bytes) of package /linux/privat/stockfish-11-linux.zip:


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    1 /*
    2   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
    3   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
    4   Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
    5   Copyright (C) 2015-2020 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
    6 
    7   Stockfish is free software: you can redistribute it and/or modify
    8   it under the terms of the GNU General Public License as published by
    9   the Free Software Foundation, either version 3 of the License, or
   10   (at your option) any later version.
   11 
   12   Stockfish is distributed in the hope that it will be useful,
   13   but WITHOUT ANY WARRANTY; without even the implied warranty of
   14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15   GNU General Public License for more details.
   16 
   17   You should have received a copy of the GNU General Public License
   18   along with this program.  If not, see <http://www.gnu.org/licenses/>.
   19 */
   20 
   21 #ifndef THREAD_WIN32_OSX_H_INCLUDED
   22 #define THREAD_WIN32_OSX_H_INCLUDED
   23 
   24 #include <thread>
   25 
   26 /// On OSX threads other than the main thread are created with a reduced stack
   27 /// size of 512KB by default, this is too low for deep searches, which require
   28 /// somewhat more than 1MB stack, so adjust it to TH_STACK_SIZE.
   29 /// The implementation calls pthread_create() with the stack size parameter
   30 /// equal to the linux 8MB default, on platforms that support it.
   31 
   32 #if defined(__APPLE__) || defined(__MINGW32__) || defined(__MINGW64__)
   33 
   34 #include <pthread.h>
   35 
   36 static const size_t TH_STACK_SIZE = 8 * 1024 * 1024;
   37 
   38 template <class T, class P = std::pair<T*, void(T::*)()>>
   39 void* start_routine(void* ptr)
   40 {
   41    P* p = reinterpret_cast<P*>(ptr);
   42    (p->first->*(p->second))(); // Call member function pointer
   43    delete p;
   44    return NULL;
   45 }
   46 
   47 class NativeThread {
   48 
   49    pthread_t thread;
   50 
   51 public:
   52   template<class T, class P = std::pair<T*, void(T::*)()>>
   53   explicit NativeThread(void(T::*fun)(), T* obj) {
   54     pthread_attr_t attr_storage, *attr = &attr_storage;
   55     pthread_attr_init(attr);
   56     pthread_attr_setstacksize(attr, TH_STACK_SIZE);
   57     pthread_create(&thread, attr, start_routine<T>, new P(obj, fun));
   58   }
   59   void join() { pthread_join(thread, NULL); }
   60 };
   61 
   62 #else // Default case: use STL classes
   63 
   64 typedef std::thread NativeThread;
   65 
   66 #endif
   67 
   68 #endif // #ifndef THREAD_WIN32_OSX_H_INCLUDED