1/*
2 Copyright (c) 2005-2019 Intel Corporation
3
4 Licensed under the Apache License, Version 2.0 (the "License");
5 you may not use this file except in compliance with the License.
6 You may obtain a copy of the License at
7
8 http://www.apache.org/licenses/LICENSE-2.0
9
10 Unless required by applicable law or agreed to in writing, software
11 distributed under the License is distributed on an "AS IS" BASIS,
12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 See the License for the specific language governing permissions and
14 limitations under the License.
15*/
16
17#ifndef __TBB_combinable_H
18#define __TBB_combinable_H
19
20#include "enumerable_thread_specific.h"
21#include "cache_aligned_allocator.h"
22
23namespace tbb {
24/** \name combinable
25 **/
26//@{
27//! Thread-local storage with optional reduction
28/** @ingroup containers */
29 template <typename T>
30 class combinable {
31
32 private:
33 typedef typename tbb::cache_aligned_allocator<T> my_alloc;
34 typedef typename tbb::enumerable_thread_specific<T, my_alloc, ets_no_key> my_ets_type;
35 my_ets_type my_ets;
36
37 public:
38
39 combinable() { }
40
41 template <typename finit>
42 explicit combinable( finit _finit) : my_ets(_finit) { }
43
44 //! destructor
45 ~combinable() { }
46
47 combinable( const combinable& other) : my_ets(other.my_ets) { }
48
49#if __TBB_ETS_USE_CPP11
50 combinable( combinable&& other) : my_ets( std::move(other.my_ets)) { }
51#endif
52
53 combinable & operator=( const combinable & other) {
54 my_ets = other.my_ets;
55 return *this;
56 }
57
58#if __TBB_ETS_USE_CPP11
59 combinable & operator=( combinable && other) {
60 my_ets=std::move(other.my_ets);
61 return *this;
62 }
63#endif
64
65 void clear() { my_ets.clear(); }
66
67 T& local() { return my_ets.local(); }
68
69 T& local(bool & exists) { return my_ets.local(exists); }
70
71 // combine_func_t has signature T(T,T) or T(const T&, const T&)
72 template <typename combine_func_t>
73 T combine(combine_func_t f_combine) { return my_ets.combine(f_combine); }
74
75 // combine_func_t has signature void(T) or void(const T&)
76 template <typename combine_func_t>
77 void combine_each(combine_func_t f_combine) { my_ets.combine_each(f_combine); }
78
79 };
80} // namespace tbb
81#endif /* __TBB_combinable_H */
82