1 /* 2 Copyright 2005-2014 Intel Corporation. All Rights Reserved. 3 4 This file is part of Threading Building Blocks. Threading Building Blocks is free software; 5 you can redistribute it and/or modify it under the terms of the GNU General Public License 6 version 2 as published by the Free Software Foundation. Threading Building Blocks is 7 distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the 8 implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 9 See the GNU General Public License for more details. You should have received a copy of 10 the GNU General Public License along with Threading Building Blocks; if not, write to the 11 Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 12 13 As a special exception, you may use this file as part of a free software library without 14 restriction. Specifically, if other files instantiate templates or use macros or inline 15 functions from this file, or you compile this file and link it with other files to produce 16 an executable, this file does not by itself cause the resulting executable to be covered 17 by the GNU General Public License. This exception does not however invalidate any other 18 reasons why the executable file might be covered by the GNU General Public License. 19 */ 20 21 #ifndef __TBB_combinable_H 22 #define __TBB_combinable_H 23 24 #include "enumerable_thread_specific.h" 25 #include "cache_aligned_allocator.h" 26 27 namespace tbb { 28 /** \name combinable 29 **/ 30 //@{ 31 //! Thread-local storage with optional reduction 32 /** @ingroup containers */ 33 template <typename T> 34 class combinable { 35 private: 36 typedef typename tbb::cache_aligned_allocator<T> my_alloc; 37 38 typedef typename tbb::enumerable_thread_specific<T, my_alloc, ets_no_key> my_ets_type; 39 my_ets_type my_ets; 40 41 public: 42 combinable()43 combinable() { } 44 45 template <typename finit> combinable(finit _finit)46 combinable( finit _finit) : my_ets(_finit) { } 47 48 //! destructor ~combinable()49 ~combinable() { 50 } 51 combinable(const combinable & other)52 combinable(const combinable& other) : my_ets(other.my_ets) { } 53 54 combinable & operator=( const combinable & other) { my_ets = other.my_ets; return *this; } 55 clear()56 void clear() { my_ets.clear(); } 57 local()58 T& local() { return my_ets.local(); } 59 local(bool & exists)60 T& local(bool & exists) { return my_ets.local(exists); } 61 62 // combine_func_t has signature T(T,T) or T(const T&, const T&) 63 template <typename combine_func_t> combine(combine_func_t f_combine)64 T combine(combine_func_t f_combine) { return my_ets.combine(f_combine); } 65 66 // combine_func_t has signature void(T) or void(const T&) 67 template <typename combine_func_t> combine_each(combine_func_t f_combine)68 void combine_each(combine_func_t f_combine) { my_ets.combine_each(f_combine); } 69 70 }; 71 } // namespace tbb 72 #endif /* __TBB_combinable_H */ 73