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tests: Add test code for hbitmap serialization

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Signed-off-by: Fam Zheng <famz@redhat.com>
[Fixed minor constant issue. --js]
Signed-off-by: John Snow <jsnow@redhat.com>

Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1476395910-8697-10-git-send-email-jsnow@redhat.com
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Fam Zheng 2016-10-13 17:58:29 -04:00 committed by Max Reitz
parent 882c36f590
commit 2071f26e2d
1 changed files with 156 additions and 0 deletions
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156
tests/test-hbitmap.c
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@ -11,6 +11,7 @@
#include "qemu/osdep.h"
#include "qemu/hbitmap.h"
#include "qemu/bitmap.h"
#include "block/block.h"
#define LOG_BITS_PER_LONG (BITS_PER_LONG == 32 ? 5 : 6)
@ -737,6 +738,16 @@ static void test_hbitmap_meta_one(TestHBitmapData *data, const void *unused)
}
}
static void test_hbitmap_serialize_granularity(TestHBitmapData *data,
const void *unused)
{
int r;
hbitmap_test_init(data, L3 * 2, 3);
r = hbitmap_serialization_granularity(data->hb);
g_assert_cmpint(r, ==, 64 << 3);
}
static void test_hbitmap_meta_zero(TestHBitmapData *data, const void *unused)
{
hbitmap_test_init_meta(data, 0, 0, 1);
@ -744,6 +755,142 @@ static void test_hbitmap_meta_zero(TestHBitmapData *data, const void *unused)
hbitmap_check_meta(data, 0, 0);
}
static void hbitmap_test_serialize_range(TestHBitmapData *data,
uint8_t *buf, size_t buf_size,
uint64_t pos, uint64_t count)
{
size_t i;
unsigned long *el = (unsigned long *)buf;
assert(hbitmap_granularity(data->hb) == 0);
hbitmap_reset_all(data->hb);
memset(buf, 0, buf_size);
if (count) {
hbitmap_set(data->hb, pos, count);
}
hbitmap_serialize_part(data->hb, buf, 0, data->size);
/* Serialized buffer is inherently LE, convert it back manually to test */
for (i = 0; i < buf_size / sizeof(unsigned long); i++) {
el[i] = (BITS_PER_LONG == 32 ? le32_to_cpu(el[i]) : le64_to_cpu(el[i]));
}
for (i = 0; i < data->size; i++) {
int is_set = test_bit(i, (unsigned long *)buf);
if (i >= pos && i < pos + count) {
g_assert(is_set);
} else {
g_assert(!is_set);
}
}
/* Re-serialize for deserialization testing */
memset(buf, 0, buf_size);
hbitmap_serialize_part(data->hb, buf, 0, data->size);
hbitmap_reset_all(data->hb);
hbitmap_deserialize_part(data->hb, buf, 0, data->size, true);
for (i = 0; i < data->size; i++) {
int is_set = hbitmap_get(data->hb, i);
if (i >= pos && i < pos + count) {
g_assert(is_set);
} else {
g_assert(!is_set);
}
}
}
static void test_hbitmap_serialize_basic(TestHBitmapData *data,
const void *unused)
{
int i, j;
size_t buf_size;
uint8_t *buf;
uint64_t positions[] = { 0, 1, L1 - 1, L1, L2 - 1, L2, L2 + 1, L3 - 1 };
int num_positions = sizeof(positions) / sizeof(positions[0]);
hbitmap_test_init(data, L3, 0);
buf_size = hbitmap_serialization_size(data->hb, 0, data->size);
buf = g_malloc0(buf_size);
for (i = 0; i < num_positions; i++) {
for (j = 0; j < num_positions; j++) {
hbitmap_test_serialize_range(data, buf, buf_size,
positions[i],
MIN(positions[j], L3 - positions[i]));
}
}
g_free(buf);
}
static void test_hbitmap_serialize_part(TestHBitmapData *data,
const void *unused)
{
int i, j, k;
size_t buf_size;
uint8_t *buf;
uint64_t positions[] = { 0, 1, L1 - 1, L1, L2 - 1, L2, L2 + 1, L3 - 1 };
int num_positions = sizeof(positions) / sizeof(positions[0]);
hbitmap_test_init(data, L3, 0);
buf_size = L2;
buf = g_malloc0(buf_size);
for (i = 0; i < num_positions; i++) {
hbitmap_set(data->hb, positions[i], 1);
}
for (i = 0; i < data->size; i += buf_size) {
unsigned long *el = (unsigned long *)buf;
hbitmap_serialize_part(data->hb, buf, i, buf_size);
for (j = 0; j < buf_size / sizeof(unsigned long); j++) {
el[j] = (BITS_PER_LONG == 32 ? le32_to_cpu(el[j]) : le64_to_cpu(el[j]));
}
for (j = 0; j < buf_size; j++) {
bool should_set = false;
for (k = 0; k < num_positions; k++) {
if (positions[k] == j + i) {
should_set = true;
break;
}
}
g_assert_cmpint(should_set, ==, test_bit(j, (unsigned long *)buf));
}
}
g_free(buf);
}
static void test_hbitmap_serialize_zeroes(TestHBitmapData *data,
const void *unused)
{
int i;
HBitmapIter iter;
int64_t next;
uint64_t min_l1 = MAX(L1, 64);
uint64_t positions[] = { 0, min_l1, L2, L3 - min_l1};
int num_positions = sizeof(positions) / sizeof(positions[0]);
hbitmap_test_init(data, L3, 0);
for (i = 0; i < num_positions; i++) {
hbitmap_set(data->hb, positions[i], L1);
}
for (i = 0; i < num_positions; i++) {
hbitmap_deserialize_zeroes(data->hb, positions[i], min_l1, true);
hbitmap_iter_init(&iter, data->hb, 0);
next = hbitmap_iter_next(&iter);
if (i == num_positions - 1) {
g_assert_cmpint(next, ==, -1);
} else {
g_assert_cmpint(next, ==, positions[i + 1]);
}
}
}
static void hbitmap_test_add(const char *testpath,
void (*test_func)(TestHBitmapData *data, const void *user_data))
{
@ -799,6 +946,15 @@ int main(int argc, char **argv)
hbitmap_test_add("/hbitmap/meta/byte", test_hbitmap_meta_byte);
hbitmap_test_add("/hbitmap/meta/word", test_hbitmap_meta_word);
hbitmap_test_add("/hbitmap/meta/sector", test_hbitmap_meta_sector);
hbitmap_test_add("/hbitmap/serialize/granularity",
test_hbitmap_serialize_granularity);
hbitmap_test_add("/hbitmap/serialize/basic",
test_hbitmap_serialize_basic);
hbitmap_test_add("/hbitmap/serialize/part",
test_hbitmap_serialize_part);
hbitmap_test_add("/hbitmap/serialize/zeroes",
test_hbitmap_serialize_zeroes);
g_test_run();
return 0;