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tests: Add test code for meta bitmap 

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1476395910-8697-4-git-send-email-jsnow@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Fam Zheng 2016-10-13 17:58:23 -04:00 committed by Max Reitz
parent 07ac4cdb57
commit 4b62818a4f
1 changed files with 116 additions and 0 deletions
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116
tests/test-hbitmap.c
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@ -11,6 +11,7 @@
#include "qemu/osdep.h"
#include "qemu/hbitmap.h"
#include "block/block.h"
#define LOG_BITS_PER_LONG (BITS_PER_LONG == 32 ? 5 : 6)
@ -20,6 +21,7 @@
typedef struct TestHBitmapData {
HBitmap *hb;
HBitmap *meta;
unsigned long *bits;
size_t size;
size_t old_size;
@ -91,6 +93,14 @@ static void hbitmap_test_init(TestHBitmapData *data,
}
}
static void hbitmap_test_init_meta(TestHBitmapData *data,
uint64_t size, int granularity,
int meta_chunk)
{
hbitmap_test_init(data, size, granularity);
data->meta = hbitmap_create_meta(data->hb, meta_chunk);
}
static inline size_t hbitmap_test_array_size(size_t bits)
{
size_t n = DIV_ROUND_UP(bits, BITS_PER_LONG);
@ -133,6 +143,9 @@ static void hbitmap_test_teardown(TestHBitmapData *data,
const void *unused)
{
if (data->hb) {
if (data->meta) {
hbitmap_free_meta(data->hb);
}
hbitmap_free(data->hb);
data->hb = NULL;
}
@ -634,6 +647,103 @@ static void test_hbitmap_truncate_shrink_large(TestHBitmapData *data,
hbitmap_test_truncate(data, size, -diff, 0);
}
static void hbitmap_check_meta(TestHBitmapData *data,
int64_t start, int count)
{
int64_t i;
for (i = 0; i < data->size; i++) {
if (i >= start && i < start + count) {
g_assert(hbitmap_get(data->meta, i));
} else {
g_assert(!hbitmap_get(data->meta, i));
}
}
}
static void hbitmap_test_meta(TestHBitmapData *data,
int64_t start, int count,
int64_t check_start, int check_count)
{
hbitmap_reset_all(data->hb);
hbitmap_reset_all(data->meta);
/* Test "unset" -> "unset" will not update meta. */
hbitmap_reset(data->hb, start, count);
hbitmap_check_meta(data, 0, 0);
/* Test "unset" -> "set" will update meta */
hbitmap_set(data->hb, start, count);
hbitmap_check_meta(data, check_start, check_count);
/* Test "set" -> "set" will not update meta */
hbitmap_reset_all(data->meta);
hbitmap_set(data->hb, start, count);
hbitmap_check_meta(data, 0, 0);
/* Test "set" -> "unset" will update meta */
hbitmap_reset_all(data->meta);
hbitmap_reset(data->hb, start, count);
hbitmap_check_meta(data, check_start, check_count);
}
static void hbitmap_test_meta_do(TestHBitmapData *data, int chunk_size)
{
uint64_t size = chunk_size * 100;
hbitmap_test_init_meta(data, size, 0, chunk_size);
hbitmap_test_meta(data, 0, 1, 0, chunk_size);
hbitmap_test_meta(data, 0, chunk_size, 0, chunk_size);
hbitmap_test_meta(data, chunk_size - 1, 1, 0, chunk_size);
hbitmap_test_meta(data, chunk_size - 1, 2, 0, chunk_size * 2);
hbitmap_test_meta(data, chunk_size - 1, chunk_size + 1, 0, chunk_size * 2);
hbitmap_test_meta(data, chunk_size - 1, chunk_size + 2, 0, chunk_size * 3);
hbitmap_test_meta(data, 7 * chunk_size - 1, chunk_size + 2,
6 * chunk_size, chunk_size * 3);
hbitmap_test_meta(data, size - 1, 1, size - chunk_size, chunk_size);
hbitmap_test_meta(data, 0, size, 0, size);
}
static void test_hbitmap_meta_byte(TestHBitmapData *data, const void *unused)
{
hbitmap_test_meta_do(data, BITS_PER_BYTE);
}
static void test_hbitmap_meta_word(TestHBitmapData *data, const void *unused)
{
hbitmap_test_meta_do(data, BITS_PER_LONG);
}
static void test_hbitmap_meta_sector(TestHBitmapData *data, const void *unused)
{
hbitmap_test_meta_do(data, BDRV_SECTOR_SIZE * BITS_PER_BYTE);
}
/**
* Create an HBitmap and test set/unset.
*/
static void test_hbitmap_meta_one(TestHBitmapData *data, const void *unused)
{
int i;
int64_t offsets[] = {
0, 1, L1 - 1, L1, L1 + 1, L2 - 1, L2, L2 + 1, L3 - 1, L3, L3 + 1
};
hbitmap_test_init_meta(data, L3 * 2, 0, 1);
for (i = 0; i < ARRAY_SIZE(offsets); i++) {
hbitmap_test_meta(data, offsets[i], 1, offsets[i], 1);
hbitmap_test_meta(data, offsets[i], L1, offsets[i], L1);
hbitmap_test_meta(data, offsets[i], L2, offsets[i], L2);
}
}
static void test_hbitmap_meta_zero(TestHBitmapData *data, const void *unused)
{
hbitmap_test_init_meta(data, 0, 0, 1);
hbitmap_check_meta(data, 0, 0);
}
static void hbitmap_test_add(const char *testpath,
void (*test_func)(TestHBitmapData *data, const void *user_data))
{
@ -683,6 +793,12 @@ int main(int argc, char **argv)
test_hbitmap_truncate_grow_large);
hbitmap_test_add("/hbitmap/truncate/shrink/large",
test_hbitmap_truncate_shrink_large);
hbitmap_test_add("/hbitmap/meta/zero", test_hbitmap_meta_zero);
hbitmap_test_add("/hbitmap/meta/one", test_hbitmap_meta_one);
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);
g_test_run();
return 0;