isa-l/raid/xor_gen_test.c

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#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include "raid.h"
#include "test.h"

#define TEST_SOURCES 16
#define TEST_LEN     1024
#define TEST_MEM     ((TEST_SOURCES + 1) * (TEST_LEN))
#ifndef TEST_SEED
#define TEST_SEED 0x1234
#endif

// Generates pseudo-random data

void
rand_buffer(unsigned char *buf, long buffer_size)
{
        long i;
        for (i = 0; i < buffer_size; i++)
                buf[i] = rand();
}

int
main(int argc, char *argv[])
{
        int i, j, k, ret, fail = 0;
        void *buffs[TEST_SOURCES + 1] = { NULL };
        char *tmp_buf[TEST_SOURCES + 1] = { NULL };

        printf("Test xor_gen_test ");

        srand(TEST_SEED);

        // Allocate the arrays
        for (i = 0; i < TEST_SOURCES + 1; i++) {
                void *buf;
                ret = posix_memalign(&buf, 32, TEST_LEN);
                if (ret) {
                        printf("alloc error: Fail");
                        fail = 1;
                        goto exit;
                }
                buffs[i] = buf;
        }

        // Test of all zeros
        for (i = 0; i < TEST_SOURCES + 1; i++)
                memset(buffs[i], 0, TEST_LEN);

        xor_gen(TEST_SOURCES + 1, TEST_LEN, buffs);

        for (i = 0; i < TEST_LEN; i++) {
                if (((char *) buffs[TEST_SOURCES])[i] != 0)
                        fail++;
        }

        if (fail > 0) {
                printf("fail zero test");
                goto exit;
        }
#ifdef TEST_VERBOSE
        putchar('.');
#endif

        // Test rand1
        for (i = 0; i < TEST_SOURCES + 1; i++)
                rand_buffer(buffs[i], TEST_LEN);

        xor_gen(TEST_SOURCES + 1, TEST_LEN, buffs);

        fail |= xor_check_base(TEST_SOURCES + 1, TEST_LEN, buffs);

        if (fail > 0) {
                printf("fail rand test %d\n", fail);
                goto exit;
        }
#ifdef TEST_VERBOSE
        putchar('.');
#endif

        // Test various number of sources
        for (j = 3; j <= TEST_SOURCES + 1; j++) {
                for (i = 0; i < j; i++)
                        rand_buffer(buffs[i], TEST_LEN);

                xor_gen(j, TEST_LEN, buffs);
                fail |= xor_check_base(j, TEST_LEN, buffs);

                if (fail > 0) {
                        printf("fail rand test %d sources\n", j);
                        goto exit;
                }
#ifdef TEST_VERBOSE
                putchar('.');
#endif
        }

        fflush(0);

        // Test various number of sources and len
        k = 0;
        while (k <= TEST_LEN) {
                for (j = 3; j <= TEST_SOURCES + 1; j++) {
                        for (i = 0; i < j; i++)
                                rand_buffer(buffs[i], k);

                        xor_gen(j, k, buffs);
                        fail |= xor_check_base(j, k, buffs);

                        if (fail > 0) {
                                printf("fail rand test %d sources, len=%d, ret=%d\n", j, k, fail);
                                goto exit;
                        }
                }
#ifdef TEST_VERBOSE
                putchar('.');
#endif
                k += 1;
        }

        // Test at the end of buffer
        for (i = 0; i < TEST_LEN; i += 32) {
                for (j = 0; j < TEST_SOURCES + 1; j++) {
                        rand_buffer((unsigned char *) buffs[j] + i, TEST_LEN - i);
                        tmp_buf[j] = (char *) buffs[j] + i;
                }

                xor_gen(TEST_SOURCES + 1, TEST_LEN - i, (void *) tmp_buf);
                fail |= xor_check_base(TEST_SOURCES + 1, TEST_LEN - i, (void *) tmp_buf);

                if (fail > 0) {
                        printf("fail end test - offset: %d, len: %d\n", i, TEST_LEN - i);
                        goto exit;
                }
#ifdef TEST_VERBOSE
                putchar('.');
#endif
                fflush(0);
        }

        if (!fail)
                printf(" done: Pass\n");

exit:
        for (i = 0; i < TEST_SOURCES + 1; i++)
                aligned_free(buffs[i]);

        return fail;
}