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119 lines
4.4 KiB
C
119 lines
4.4 KiB
C
/*
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Copyright (c) 2014-2015 Intel Corporation. All Rights Reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef CEAN_UTIL_H_INCLUDED
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#define CEAN_UTIL_H_INCLUDED
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#include <stdint.h>
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#include "offload_util.h"
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// CEAN expression representation
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struct Dim_Desc {
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int64_t size; // Length of data type
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int64_t lindex; // Lower index
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int64_t lower; // Lower section bound
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int64_t upper; // Upper section bound
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int64_t stride; // Stride
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};
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struct Arr_Desc {
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int64_t base; // Base address
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int64_t rank; // Rank of array
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Dim_Desc dim[1];
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};
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struct CeanReadDim {
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int64_t count; // The number of elements in this dimension
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int64_t size; // The number of bytes between successive
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// elements in this dimension.
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};
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struct CeanReadRanges {
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Arr_Desc* arr_desc;
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void * ptr;
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int64_t current_number; // the number of ranges read
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int64_t range_max_number; // number of contiguous ranges
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int64_t range_size; // size of max contiguous range
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int last_noncont_ind; // size of Dim array
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int64_t init_offset; // offset of 1-st element from array left bound
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CeanReadDim Dim[1];
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};
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// array descriptor length
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#define __arr_desc_length(rank) \
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(sizeof(int64_t) + sizeof(Dim_Desc) * (rank))
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// returns offset and length of the data to be transferred
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DLL_LOCAL void __arr_data_offset_and_length(const Arr_Desc *adp,
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int64_t &offset,
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int64_t &length);
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// define if data array described by argument is contiguous one
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DLL_LOCAL bool is_arr_desc_contiguous(const Arr_Desc *ap);
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// allocate element of CeanReadRanges type initialized
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// to read consequently contiguous ranges described by "ap" argument
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DLL_LOCAL CeanReadRanges * init_read_ranges_arr_desc(const Arr_Desc *ap);
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// check if ranges described by 1 argument could be transferred into ranges
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// described by 2-nd one
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DLL_LOCAL bool cean_ranges_match(
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CeanReadRanges * read_rng1,
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CeanReadRanges * read_rng2
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);
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// first argument - returned value by call to init_read_ranges_arr_desc.
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// returns true if offset and length of next range is set successfuly.
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// returns false if the ranges is over.
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DLL_LOCAL bool get_next_range(
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CeanReadRanges * read_rng,
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int64_t *offset
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);
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// returns number of transferred bytes
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DLL_LOCAL int64_t cean_get_transf_size(CeanReadRanges * read_rng);
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#if OFFLOAD_DEBUG > 0
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// prints array descriptor contents to stderr
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DLL_LOCAL void __arr_desc_dump(
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const char *spaces,
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const char *name,
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const Arr_Desc *adp,
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bool dereference,
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bool print_values);
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#define ARRAY_DESC_DUMP(spaces, name, adp, dereference, print_values) \
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if (console_enabled >= 2) \
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__arr_desc_dump(spaces, name, adp, dereference, print_values);
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#else
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#define ARRAY_DESC_DUMP(spaces, name, adp, dereference, print_values)
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#endif // OFFLOAD_DEBUG
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#endif // CEAN_UTIL_H_INCLUDED
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