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c2ba9709 JS |
1 | // -*- C++ -*- |
2 | ||
748086b7 | 3 | // Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc. |
c2ba9709 JS |
4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the terms | |
7 | // of the GNU General Public License as published by the Free Software | |
748086b7 | 8 | // Foundation; either version 3, or (at your option) any later |
c2ba9709 JS |
9 | // version. |
10 | ||
11 | // This library is distributed in the hope that it will be useful, but | |
12 | // WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | // General Public License for more details. | |
15 | ||
748086b7 JJ |
16 | // Under Section 7 of GPL version 3, you are granted additional |
17 | // permissions described in the GCC Runtime Library Exception, version | |
18 | // 3.1, as published by the Free Software Foundation. | |
19 | ||
20 | // You should have received a copy of the GNU General Public License and | |
21 | // a copy of the GCC Runtime Library Exception along with this program; | |
22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | // <http://www.gnu.org/licenses/>. | |
c2ba9709 JS |
24 | |
25 | /** @file parallel/types.h | |
847eb551 | 26 | * @brief Basic types and typedefs. |
c2ba9709 JS |
27 | * This file is a GNU parallel extension to the Standard C++ Library. |
28 | */ | |
29 | ||
30 | // Written by Johannes Singler and Felix Putze. | |
31 | ||
32 | #ifndef _GLIBCXX_PARALLEL_TYPES_H | |
33 | #define _GLIBCXX_PARALLEL_TYPES_H 1 | |
34 | ||
35 | #include <cstdlib> | |
36 | ||
37 | namespace __gnu_parallel | |
38 | { | |
847eb551 BK |
39 | // Enumerated types. |
40 | ||
ee1b5fc5 BK |
41 | /// Run-time equivalents for the compile-time tags. |
42 | enum _Parallelism | |
847eb551 BK |
43 | { |
44 | /// Not parallel. | |
45 | sequential, | |
46 | ||
47 | /// Parallel unbalanced (equal-sized chunks). | |
48 | parallel_unbalanced, | |
49 | ||
50 | /// Parallel balanced (work-stealing). | |
51 | parallel_balanced, | |
52 | ||
53 | /// Parallel with OpenMP dynamic load-balancing. | |
54 | parallel_omp_loop, | |
55 | ||
56 | /// Parallel with OpenMP static load-balancing. | |
57 | parallel_omp_loop_static, | |
58 | ||
59 | /// Parallel with OpenMP taskqueue construct. | |
60 | parallel_taskqueue | |
61 | }; | |
62 | ||
ee1b5fc5 BK |
63 | /// Strategies for run-time algorithm selection: |
64 | // force_sequential, force_parallel, heuristic. | |
65 | enum _AlgorithmStrategy | |
66 | { | |
67 | heuristic, | |
68 | force_sequential, | |
69 | force_parallel | |
70 | }; | |
71 | ||
72 | /// Sorting algorithms: | |
73 | // multi-way mergesort, quicksort, load-balanced quicksort. | |
74 | enum _SortAlgorithm | |
75 | { | |
76 | MWMS, | |
77 | QS, | |
78 | QS_BALANCED | |
79 | }; | |
80 | ||
81 | /// Merging algorithms: | |
82 | // bubblesort-alike, loser-tree variants, enum sentinel. | |
83 | enum _MultiwayMergeAlgorithm | |
f9985df5 JS |
84 | { |
85 | LOSER_TREE | |
ee1b5fc5 | 86 | }; |
f9985df5 | 87 | |
ee1b5fc5 BK |
88 | /// Partial sum algorithms: recursive, linear. |
89 | enum _PartialSumAlgorithm | |
90 | { | |
91 | RECURSIVE, | |
92 | LINEAR | |
93 | }; | |
94 | ||
95 | /// Sorting/merging algorithms: sampling, exact. | |
96 | enum _SplittingAlgorithm | |
97 | { | |
98 | SAMPLING, | |
99 | EXACT | |
100 | }; | |
847eb551 | 101 | |
ee1b5fc5 BK |
102 | /// Find algorithms: |
103 | // growing blocks, equal-sized blocks, equal splitting. | |
104 | enum _FindAlgorithm | |
105 | { | |
106 | GROWING_BLOCKS, | |
107 | CONSTANT_SIZE_BLOCKS, | |
108 | EQUAL_SPLIT | |
109 | }; | |
110 | ||
111 | /// Integer Types. | |
6df548d2 PC |
112 | // XXX need to use <cstdint> |
113 | /** @brief 16-bit signed integer. */ | |
114 | typedef short int16; | |
847eb551 | 115 | |
6df548d2 PC |
116 | /** @brief 16-bit unsigned integer. */ |
117 | typedef unsigned short uint16; | |
847eb551 | 118 | |
6df548d2 PC |
119 | /** @brief 32-bit signed integer. */ |
120 | typedef int int32; | |
121 | ||
122 | /** @brief 32-bit unsigned integer. */ | |
123 | typedef unsigned int uint32; | |
124 | ||
125 | /** @brief 64-bit signed integer. */ | |
126 | typedef long long int64; | |
127 | ||
128 | /** @brief 64-bit unsigned integer. */ | |
129 | typedef unsigned long long uint64; | |
c2ba9709 JS |
130 | |
131 | /** | |
132 | * @brief Unsigned integer to index elements. | |
133 | * The total number of elements for each algorithm must fit into this type. | |
134 | */ | |
6df548d2 | 135 | typedef uint64 sequence_index_t; |
c2ba9709 JS |
136 | |
137 | /** | |
138 | * @brief Unsigned integer to index a thread number. | |
139 | * The maximum thread number (for each processor) must fit into this type. | |
140 | */ | |
6df548d2 | 141 | typedef uint16 thread_index_t; |
c2ba9709 | 142 | |
847eb551 | 143 | // XXX atomics interface? |
ee1b5fc5 | 144 | /// Longest compare-and-swappable integer type on this platform. |
6df548d2 | 145 | typedef int64 lcas_t; |
c2ba9709 | 146 | |
847eb551 | 147 | // XXX numeric_limits::digits? |
ee1b5fc5 | 148 | /// Number of bits of ::lcas_t. |
c2ba9709 JS |
149 | static const int lcas_t_bits = sizeof(lcas_t) * 8; |
150 | ||
ee1b5fc5 | 151 | /// ::lcas_t with the right half of bits set to 1. |
847eb551 | 152 | static const lcas_t lcas_t_mask = ((lcas_t(1) << (lcas_t_bits / 2)) - 1); |
c2ba9709 JS |
153 | } |
154 | ||
cbcd1e45 | 155 | #endif /* _GLIBCXX_PARALLEL_TYPES_H */ |