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/* Copyright (C) 2021-2025 Free Software Foundation, Inc.
Contributed by Oracle.
This file is part of GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "mydefs.h"
/*
* -----------------------------------------------------------------------------
* This function determines the number of rows each thread will be working on
* and also how many threads will be active.
* -----------------------------------------------------------------------------
*/
void get_workload_stats (int64_t number_of_threads,
int64_t number_of_rows,
int64_t number_of_columns,
int64_t *rows_per_thread,
int64_t *remainder_rows,
int64_t *active_threads)
{
if (number_of_threads <= number_of_rows)
{
*remainder_rows = number_of_rows%number_of_threads;
*rows_per_thread = (number_of_rows - (*remainder_rows))/number_of_threads;
}
else
{
*remainder_rows = 0;
*rows_per_thread = 1;
}
*active_threads = number_of_threads < number_of_rows
? number_of_threads : number_of_rows;
if (verbose)
{
printf ("Rows per thread = %ld remainder = %ld\n",
*rows_per_thread, *remainder_rows);
printf ("Number of active threads = %ld\n", *active_threads);
}
}
/*
* -----------------------------------------------------------------------------
* This function determines which rows each thread will be working on.
* -----------------------------------------------------------------------------
*/
void determine_work_per_thread (int64_t TID, int64_t rows_per_thread,
int64_t remainder_rows,
int64_t *row_index_start,
int64_t *row_index_end)
{
int64_t chunk_per_thread;
if (TID < remainder_rows)
{
chunk_per_thread = rows_per_thread + 1;
*row_index_start = TID * chunk_per_thread;
*row_index_end = (TID + 1) * chunk_per_thread - 1;
}
else
{
chunk_per_thread = rows_per_thread;
*row_index_start = remainder_rows * (rows_per_thread + 1)
+ (TID - remainder_rows) * chunk_per_thread;
*row_index_end = remainder_rows * (rows_per_thread + 1)
+ (TID - remainder_rows) * chunk_per_thread
+ chunk_per_thread - 1;
}
if (verbose)
{
printf ("TID = %ld row_index_start = %ld row_index_end = %ld\n",
TID, *row_index_start, *row_index_end);
}
}
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