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// See LICENSE for license details.
//**************************************************************************
// Memcpy benchmark
//--------------------------------------------------------------------------
// Author : Jerry Zhao
// TA :
// Student :
//
// This benchmark tests the memcpy implementation in syscalls.c.
// The input data (and reference data) should be generated using
// the memcpy_gendata.pl perl script and dumped to a file named
// dataset1.h.
//--------------------------------------------------------------------------
// Includes
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
//--------------------------------------------------------------------------
// Input/Reference Data
#include "dataset1.h"
//--------------------------------------------------------------------------
// Basic Utilities and Multi-thread Support
#include "util.h"
//--------------------------------------------------------------------------
// Main
//
// all threads start executing thread_entry(). Use their "coreid" to
// differentiate between threads (each thread is running on a separate core).
void thread_entry(int cid, int nc)
{
// static allocates data in the binary, which is visible to both threads
static long results_data[DATA_SIZE];
size_t block = (DATA_SIZE / nc) + 1;
size_t n = (nc == cid + 1) ? DATA_SIZE - cid * block : block;
// First do out-of-place memcpy
#if PREALLOCATE
barrier(nc);
memcpy(results_data + block * cid, input_data + block * cid, sizeof(long) * n);
#endif
barrier(nc);
stats(memcpy(results_data + block * cid, input_data + block * cid, sizeof(long) * n); barrier(nc), DATA_SIZE);
barrier(nc);
if (cid == 0) {
int res = verify(DATA_SIZE * sizeof(long) / sizeof(int), (int*) results_data, (int*) input_data);
if (res) exit(res);
}
barrier(nc);
exit(0);
}
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