Retro68/gcc/liboffloadmic/runtime/cean_util.h
2015-08-28 17:33:40 +02:00

117 lines
4.1 KiB
C

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