]>
Commit | Line | Data |
---|---|---|
c2ba9709 JS |
1 | // -*- C++ -*- |
2 | ||
847eb551 | 3 | // Copyright (C) 2007, 2008 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 | |
8 | // Foundation; either version 2, or (at your option) any later | |
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 | ||
16 | // You should have received a copy of the GNU General Public License | |
17 | // along with this library; see the file COPYING. If not, write to | |
18 | // the Free Software Foundation, 59 Temple Place - Suite 330, Boston, | |
19 | // MA 02111-1307, USA. | |
20 | ||
21 | // As a special exception, you may use this file as part of a free | |
22 | // software library without restriction. Specifically, if other files | |
23 | // instantiate templates or use macros or inline functions from this | |
24 | // file, or you compile this file and link it with other files to | |
25 | // produce an executable, this file does not by itself cause the | |
26 | // resulting executable to be covered by the GNU General Public | |
27 | // License. This exception does not however invalidate any other | |
28 | // reasons why the executable file might be covered by the GNU General | |
29 | // Public License. | |
30 | ||
31 | /** @file parallel/types.h | |
847eb551 | 32 | * @brief Basic types and typedefs. |
c2ba9709 JS |
33 | * This file is a GNU parallel extension to the Standard C++ Library. |
34 | */ | |
35 | ||
36 | // Written by Johannes Singler and Felix Putze. | |
37 | ||
38 | #ifndef _GLIBCXX_PARALLEL_TYPES_H | |
39 | #define _GLIBCXX_PARALLEL_TYPES_H 1 | |
40 | ||
41 | #include <cstdlib> | |
42 | ||
43 | namespace __gnu_parallel | |
44 | { | |
847eb551 BK |
45 | // Enumerated types. |
46 | ||
ee1b5fc5 BK |
47 | /// Run-time equivalents for the compile-time tags. |
48 | enum _Parallelism | |
847eb551 BK |
49 | { |
50 | /// Not parallel. | |
51 | sequential, | |
52 | ||
53 | /// Parallel unbalanced (equal-sized chunks). | |
54 | parallel_unbalanced, | |
55 | ||
56 | /// Parallel balanced (work-stealing). | |
57 | parallel_balanced, | |
58 | ||
59 | /// Parallel with OpenMP dynamic load-balancing. | |
60 | parallel_omp_loop, | |
61 | ||
62 | /// Parallel with OpenMP static load-balancing. | |
63 | parallel_omp_loop_static, | |
64 | ||
65 | /// Parallel with OpenMP taskqueue construct. | |
66 | parallel_taskqueue | |
67 | }; | |
68 | ||
ee1b5fc5 BK |
69 | /// Strategies for run-time algorithm selection: |
70 | // force_sequential, force_parallel, heuristic. | |
71 | enum _AlgorithmStrategy | |
72 | { | |
73 | heuristic, | |
74 | force_sequential, | |
75 | force_parallel | |
76 | }; | |
77 | ||
78 | /// Sorting algorithms: | |
79 | // multi-way mergesort, quicksort, load-balanced quicksort. | |
80 | enum _SortAlgorithm | |
81 | { | |
82 | MWMS, | |
83 | QS, | |
84 | QS_BALANCED | |
85 | }; | |
86 | ||
87 | /// Merging algorithms: | |
88 | // bubblesort-alike, loser-tree variants, enum sentinel. | |
89 | enum _MultiwayMergeAlgorithm | |
f9985df5 JS |
90 | { |
91 | LOSER_TREE | |
ee1b5fc5 | 92 | }; |
f9985df5 | 93 | |
ee1b5fc5 BK |
94 | /// Partial sum algorithms: recursive, linear. |
95 | enum _PartialSumAlgorithm | |
96 | { | |
97 | RECURSIVE, | |
98 | LINEAR | |
99 | }; | |
100 | ||
101 | /// Sorting/merging algorithms: sampling, exact. | |
102 | enum _SplittingAlgorithm | |
103 | { | |
104 | SAMPLING, | |
105 | EXACT | |
106 | }; | |
847eb551 | 107 | |
ee1b5fc5 BK |
108 | /// Find algorithms: |
109 | // growing blocks, equal-sized blocks, equal splitting. | |
110 | enum _FindAlgorithm | |
111 | { | |
112 | GROWING_BLOCKS, | |
113 | CONSTANT_SIZE_BLOCKS, | |
114 | EQUAL_SPLIT | |
115 | }; | |
116 | ||
117 | /// Integer Types. | |
6df548d2 PC |
118 | // XXX need to use <cstdint> |
119 | /** @brief 16-bit signed integer. */ | |
120 | typedef short int16; | |
847eb551 | 121 | |
6df548d2 PC |
122 | /** @brief 16-bit unsigned integer. */ |
123 | typedef unsigned short uint16; | |
847eb551 | 124 | |
6df548d2 PC |
125 | /** @brief 32-bit signed integer. */ |
126 | typedef int int32; | |
127 | ||
128 | /** @brief 32-bit unsigned integer. */ | |
129 | typedef unsigned int uint32; | |
130 | ||
131 | /** @brief 64-bit signed integer. */ | |
132 | typedef long long int64; | |
133 | ||
134 | /** @brief 64-bit unsigned integer. */ | |
135 | typedef unsigned long long uint64; | |
c2ba9709 JS |
136 | |
137 | /** | |
138 | * @brief Unsigned integer to index elements. | |
139 | * The total number of elements for each algorithm must fit into this type. | |
140 | */ | |
6df548d2 | 141 | typedef uint64 sequence_index_t; |
c2ba9709 JS |
142 | |
143 | /** | |
144 | * @brief Unsigned integer to index a thread number. | |
145 | * The maximum thread number (for each processor) must fit into this type. | |
146 | */ | |
6df548d2 | 147 | typedef uint16 thread_index_t; |
c2ba9709 | 148 | |
847eb551 | 149 | // XXX atomics interface? |
ee1b5fc5 | 150 | /// Longest compare-and-swappable integer type on this platform. |
6df548d2 | 151 | typedef int64 lcas_t; |
c2ba9709 | 152 | |
847eb551 | 153 | // XXX numeric_limits::digits? |
ee1b5fc5 | 154 | /// Number of bits of ::lcas_t. |
c2ba9709 JS |
155 | static const int lcas_t_bits = sizeof(lcas_t) * 8; |
156 | ||
ee1b5fc5 | 157 | /// ::lcas_t with the right half of bits set to 1. |
847eb551 | 158 | static const lcas_t lcas_t_mask = ((lcas_t(1) << (lcas_t_bits / 2)) - 1); |
c2ba9709 JS |
159 | } |
160 | ||
161 | #endif /* _GLIBCXX_TYPES_H */ |