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1 /*
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2 Copyright (c) 2014-2016 Intel Corporation. All Rights Reserved.
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3
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4 Redistribution and use in source and binary forms, with or without
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5 modification, are permitted provided that the following conditions
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6 are met:
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7
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8 * Redistributions of source code must retain the above copyright
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9 notice, this list of conditions and the following disclaimer.
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10 * Redistributions in binary form must reproduce the above copyright
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11 notice, this list of conditions and the following disclaimer in the
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12 documentation and/or other materials provided with the distribution.
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13 * Neither the name of Intel Corporation nor the names of its
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14 contributors may be used to endorse or promote products derived
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15 from this software without specific prior written permission.
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16
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17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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18 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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19 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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20 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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21 HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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22 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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23 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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24 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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25 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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26 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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27 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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28 */
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29
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30
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31 #ifndef CEAN_UTIL_H_INCLUDED
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32 #define CEAN_UTIL_H_INCLUDED
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33
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34 #include <stdint.h>
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35 #include "offload_util.h"
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36
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37 // CEAN expression representation
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38 struct Dim_Desc {
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39 int64_t size; // Length of data type
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40 int64_t lindex; // Lower index
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41 int64_t lower; // Lower section bound
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42 int64_t upper; // Upper section bound
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43 int64_t stride; // Stride
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44 };
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45
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46 struct Arr_Desc {
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47 int64_t base; // Base address
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48 int64_t rank; // Rank of array
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49 Dim_Desc dim[1];
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50 };
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51
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52 struct CeanReadDim {
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53 int64_t count; // The number of elements in this dimension
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54 int64_t size; // The number of bytes between successive
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55 // elements in this dimension.
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56 };
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57
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58 struct CeanReadRanges {
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59 Arr_Desc* arr_desc;
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60 void * ptr;
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61 int64_t current_number; // the number of ranges read
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62 int64_t range_max_number; // number of contiguous ranges
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63 int64_t range_size; // size of max contiguous range
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64 int last_noncont_ind; // size of Dim array
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65 int64_t init_offset; // offset of 1-st element from array left bound
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66 CeanReadDim Dim[1];
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67 };
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68
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69 struct IntervalDesc {
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70 int64_t lower; // Lower index
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71 int64_t size; // Size of each element at this interval
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72 };
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73
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74 struct NonContigDesc {
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75 int64_t base; // Base address
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76 int64_t interval_cnt; // Number of intervals
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77 struct IntervalDesc interval[1];
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78 };
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79
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80 // array descriptor length
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81 #define __arr_desc_length(rank) \
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82 (sizeof(int64_t) + sizeof(Dim_Desc) * (rank))
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83
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84 // returns offset and length of the data to be transferred
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85 DLL_LOCAL void __arr_data_offset_and_length(const Arr_Desc *adp,
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86 int64_t &offset,
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87 int64_t &length);
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88
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89 // define if data array described by argument is contiguous one
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90 DLL_LOCAL bool is_arr_desc_contiguous(const Arr_Desc *ap);
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91
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92 // allocate element of CeanReadRanges type initialized
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93 // to read consequently contiguous ranges described by "ap" argument
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94 DLL_LOCAL CeanReadRanges * init_read_ranges_arr_desc(const Arr_Desc *ap);
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95
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96 // check if ranges described by 1 argument could be transferred into ranges
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97 // described by 2-nd one
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98 DLL_LOCAL bool cean_ranges_match(
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99 CeanReadRanges * read_rng1,
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100 CeanReadRanges * read_rng2
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101 );
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102
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103 // first argument - returned value by call to init_read_ranges_arr_desc.
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104 // returns true if offset and length of next range is set successfuly.
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105 // returns false if the ranges is over.
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106 DLL_LOCAL bool get_next_range(
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107 CeanReadRanges * read_rng,
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108 int64_t *offset
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109 );
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110
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111 // returns number of transferred bytes
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112 DLL_LOCAL int64_t cean_get_transf_size(CeanReadRanges * read_rng);
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113
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114 #if OFFLOAD_DEBUG > 0
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115 // prints array descriptor contents to stderr
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116 DLL_LOCAL void __arr_desc_dump(
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117 const char *spaces,
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118 const char *name,
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119 const Arr_Desc *adp,
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120 bool dereference,
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121 bool print_values);
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122
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123 DLL_LOCAL void noncont_struct_dump(
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124 const char *spaces,
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125 const char *name,
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126 struct NonContigDesc *desc_p);
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127
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128 DLL_LOCAL int64_t get_noncont_struct_size(struct NonContigDesc *desc_p);
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129
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130 #define ARRAY_DESC_DUMP(spaces, name, adp, dereference, print_values) \
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131 if (console_enabled >= 2) \
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132 __arr_desc_dump(spaces, name, adp, dereference, print_values);
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133 #else
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134 #define ARRAY_DESC_DUMP(spaces, name, adp, dereference, print_values)
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135 #endif // OFFLOAD_DEBUG
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136
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137 #endif // CEAN_UTIL_H_INCLUDED
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