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/**********************************************************************
Copyright(c) 2011-2015 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
OWNER 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.
**********************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h> // for memset, memcmp
#include <assert.h>
#include "erasure_code.h"
#include "test.h"
#ifndef GT_L3_CACHE
#define GT_L3_CACHE 32 * 1024 * 1024 /* some number > last level cache */
#endif
#if !defined(COLD_TEST) && !defined(TEST_CUSTOM)
// Cached test, loop many times over small dataset
#define TEST_SOURCES 32
#define TEST_LEN(m) ((128 * 1024 / m) & ~(64 - 1))
#define TEST_TYPE_STR "_warm"
#elif defined(COLD_TEST)
// Uncached test. Pull from large mem base.
#define TEST_SOURCES 32
#define TEST_LEN(m) ((GT_L3_CACHE / m) & ~(64 - 1))
#define TEST_TYPE_STR "_cold"
#elif defined(TEST_CUSTOM)
#define TEST_TYPE_STR "_cus"
#endif
#define MMAX TEST_SOURCES
#define KMAX TEST_SOURCES
#define BAD_MATRIX -1
typedef unsigned char u8;
void
ec_encode_perf(int m, int k, u8 *a, u8 *g_tbls, u8 **buffs)
{
ec_init_tables_base(k, m - k, &a[k * k], g_tbls);
ec_encode_data_base(TEST_LEN(m), k, m - k, g_tbls, buffs, &buffs[k]);
}
int
ec_decode_perf(int m, int k, u8 *a, u8 *g_tbls, u8 **buffs, u8 *src_in_err, u8 *src_err_list,
int nerrs, u8 **temp_buffs)
{
int i, j, r;
u8 b[MMAX * KMAX], c[MMAX * KMAX], d[MMAX * KMAX];
u8 *recov[TEST_SOURCES];
// Construct b by removing error rows
for (i = 0, r = 0; i < k; i++, r++) {
while (src_in_err[r])
r++;
recov[i] = buffs[r];
for (j = 0; j < k; j++)
b[k * i + j] = a[k * r + j];
}
if (gf_invert_matrix(b, d, k) < 0)
return BAD_MATRIX;
for (i = 0; i < nerrs; i++)
for (j = 0; j < k; j++)
c[k * i + j] = d[k * src_err_list[i] + j];
// Recover data
ec_init_tables_base(k, nerrs, c, g_tbls);
ec_encode_data_base(TEST_LEN(m), k, nerrs, g_tbls, recov, temp_buffs);
return 0;
}
int
main(int argc, char *argv[])
{
int i, j, m, k, nerrs, check;
void *buf;
u8 *temp_buffs[TEST_SOURCES], *buffs[TEST_SOURCES];
u8 a[MMAX * KMAX];
u8 g_tbls[KMAX * TEST_SOURCES * 32], src_in_err[TEST_SOURCES];
u8 src_err_list[TEST_SOURCES];
struct perf start;
// Pick test parameters
m = 14;
k = 10;
nerrs = 4;
const u8 err_list[] = { 2, 4, 5, 7 };
printf("erasure_code_base_perf: %dx%d %d\n", m, TEST_LEN(m), nerrs);
// check input parameters
assert(!(m > MMAX || k > KMAX || nerrs > (m - k)));
memcpy(src_err_list, err_list, nerrs);
memset(src_in_err, 0, TEST_SOURCES);
for (i = 0; i < nerrs; i++)
src_in_err[src_err_list[i]] = 1;
// Allocate the arrays
for (i = 0; i < m; i++) {
if (posix_memalign(&buf, 64, TEST_LEN(m))) {
printf("alloc error: Fail\n");
return -1;
}
buffs[i] = buf;
}
for (i = 0; i < (m - k); i++) {
if (posix_memalign(&buf, 64, TEST_LEN(m))) {
printf("alloc error: Fail\n");
return -1;
}
temp_buffs[i] = buf;
}
// Make random data
for (i = 0; i < k; i++)
for (j = 0; j < TEST_LEN(m); j++)
buffs[i][j] = rand();
gf_gen_rs_matrix(a, m, k);
// Start encode test
BENCHMARK(&start, BENCHMARK_TIME, ec_encode_perf(m, k, a, g_tbls, buffs));
printf("erasure_code_base_encode" TEST_TYPE_STR ": ");
perf_print(start, (long long) (TEST_LEN(m)) * (m));
// Start decode test
BENCHMARK(&start, BENCHMARK_TIME,
check = ec_decode_perf(m, k, a, g_tbls, buffs, src_in_err, src_err_list, nerrs,
temp_buffs));
if (check == BAD_MATRIX) {
printf("BAD MATRIX\n");
return check;
}
for (i = 0; i < nerrs; i++) {
if (0 != memcmp(temp_buffs[i], buffs[src_err_list[i]], TEST_LEN(m))) {
printf("Fail error recovery (%d, %d, %d) - ", m, k, nerrs);
return -1;
}
}
printf("erasure_code_base_decode" TEST_TYPE_STR ": ");
perf_print(start, (long long) (TEST_LEN(m)) * (k + nerrs));
printf("done all: Pass\n");
return 0;
}
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