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-rw-r--r--src/isa-l/mem/mem_zero_detect_test.c226
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diff --git a/src/isa-l/mem/mem_zero_detect_test.c b/src/isa-l/mem/mem_zero_detect_test.c
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+/**********************************************************************
+ Copyright(c) 2011-2018 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 <string.h>
+#include <stdlib.h>
+#include <limits.h>
+#include "mem_routines.h"
+#include "types.h"
+
+#define TEST_MEM 10*1024*1024
+#define TEST_LEN 8*1024
+#define RAND_ALIGN 32
+#define BORDER_BYTES (5*RAND_ALIGN + 7)
+
+#ifndef RANDOMS
+# define RANDOMS 2000
+#endif
+#ifndef TEST_SEED
+# define TEST_SEED 0x1234
+#endif
+
+int main(int argc, char *argv[])
+{
+ int i, j, sign;
+ long long r, l;
+ void *buf;
+ unsigned char *a;
+ int failures = 0, ret_neg = 1;
+
+ printf("mem_zero_detect_test %d bytes, %d randoms, seed=0x%x ", TEST_MEM, RANDOMS,
+ TEST_SEED);
+ if (posix_memalign(&buf, 64, TEST_MEM)) {
+ printf("alloc error: Fail");
+ return -1;
+ }
+
+ srand(TEST_SEED);
+
+ // Test full zero buffer
+ memset(buf, 0, TEST_MEM);
+ failures = isal_zero_detect(buf, TEST_MEM);
+
+ if (failures) {
+ printf("Fail large buf test\n");
+ return failures;
+ }
+ putchar('.');
+
+ // Test small buffers
+ for (i = 0; i < TEST_LEN; i++) {
+ failures |= isal_zero_detect(buf, i);
+ if (failures) {
+ printf("Fail len=%d\n", i);
+ return failures;
+ }
+ }
+ putchar('.');
+
+ // Test small buffers near end of alloc region
+ a = buf;
+ for (i = 0; i < TEST_LEN; i++)
+ failures |= isal_zero_detect(&a[TEST_LEN - i], i);
+
+ if (failures) {
+ printf("Fail:\n");
+ return failures;
+ }
+ putchar('.');
+
+ // Test for detect non zero
+ a[TEST_MEM / 2] = 1;
+ ret_neg = isal_zero_detect(a, TEST_MEM);
+ if (ret_neg == 0) {
+ printf("Fail on not detect\n");
+ return -1;
+ }
+ a[TEST_MEM / 2] = 0;
+ putchar('.');
+
+ // Test various non-zero offsets
+ for (i = 0; i < BORDER_BYTES; i++) {
+ for (j = 0; j < CHAR_BIT; j++) {
+ a[i] = 1 << j;
+ ret_neg = isal_zero_detect(a, TEST_MEM);
+ if (ret_neg == 0) {
+ printf("Fail on not detect offsets %d, %d\n", i, j);
+ return -1;
+ }
+ a[i] = 0;
+ }
+ }
+ putchar('.');
+ fflush(0);
+
+ // Test random non-zero offsets
+ for (i = 0; i < RANDOMS; i++) {
+ r = rand();
+ r = (r % TEST_LEN) ^ (r & (RAND_ALIGN - 1));
+ if (r >= TEST_LEN)
+ continue;
+
+ a[r] = 1 << (r & (CHAR_BIT - 1));
+ ret_neg = isal_zero_detect(a, TEST_MEM);
+ if (ret_neg == 0) {
+ printf("Fail on not detect rand %d, e=%lld\n", i, r);
+ return -1;
+ }
+ a[r] = 0;
+ }
+ putchar('.');
+ fflush(0);
+
+ // Test putting non-zero byte at end of buffer
+ for (i = 1; i < BORDER_BYTES; i++) {
+ for (j = 0; j < CHAR_BIT; j++) {
+ a[TEST_MEM - i] = 1 << j;
+ ret_neg = isal_zero_detect(a, TEST_MEM);
+ if (ret_neg == 0) {
+ printf("Fail on not detect rand offset=%d, idx=%d\n", i, j);
+ return -1;
+ }
+ a[TEST_MEM - i] = 0;
+ }
+ }
+ putchar('.');
+
+ // Test various size buffers and non-zero offsets
+ for (l = 1; l < TEST_LEN; l++) {
+ for (i = 0; i < l + BORDER_BYTES; i++) {
+ failures = isal_zero_detect(a, l);
+
+ if (failures) {
+ printf("Fail on detect non-zero with l=%lld\n", l);
+ return -1;
+ }
+
+ a[i] = 1;
+ ret_neg = isal_zero_detect(a, l);
+
+ if ((i < l) && (ret_neg == 0)) {
+ printf("Fail on non-zero buffer l=%lld err=%d\n", l, i);
+ return -1;
+ }
+ if ((i >= l) && (ret_neg != 0)) {
+ printf("Fail on bad pass detect l=%lld err=%d\n", l, i);
+ return -1;
+ }
+ a[i] = 0;
+ }
+ }
+ putchar('.');
+
+ // Test random test size and non-zero error offsets
+ for (i = 0; i < RANDOMS; i++) {
+ r = rand();
+ r = (r % TEST_LEN) ^ (r & (RAND_ALIGN - 1));
+ l = r + 1 + (rand() & (CHAR_BIT - 1));
+ a[r] = 1 << (r & (CHAR_BIT - 1));
+ ret_neg = isal_zero_detect(a, l);
+ if (ret_neg == 0) {
+ printf("Fail on not detect rand %d, l=%lld, e=%lld\n", i, l, r);
+ return -1;
+ }
+ a[r] = 0;
+ }
+ putchar('.');
+ fflush(0);
+
+ // Test combinations of zero and non-zero buffers
+ for (i = 0; i < RANDOMS; i++) {
+ r = rand();
+ r = (r % TEST_LEN) ^ (r & (RAND_ALIGN - 1));
+ sign = rand() & 1 ? 1 : -1;
+ l = r + sign * (rand() & (2 * RAND_ALIGN - 1));
+
+ if ((l >= TEST_LEN) || (l < 0) || (r >= TEST_LEN))
+ continue;
+
+ a[r] = 1 << (r & (CHAR_BIT - 1));
+ ret_neg = isal_zero_detect(a, l);
+
+ if ((r < l) && (ret_neg == 0)) {
+ printf("Fail on non-zero rand buffer %d, l=%lld, e=%lld\n", i, l, r);
+ return -1;
+ }
+ if ((r >= l) && (ret_neg != 0)) {
+ printf("Fail on bad pass zero detect rand %d, l=%lld, e=%lld\n", i, l,
+ r);
+ return -1;
+ }
+
+ a[r] = 0;
+ }
+ putchar('.');
+ fflush(0);
+
+ printf(failures == 0 ? " Pass\n" : " Fail\n");
+ return failures;
+}