Signed-off-by: Fam Zheng <f...@redhat.com>
Reviewed-by: John Snow <js...@redhat.com>
---
tests/test-hbitmap.c | 116 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 116 insertions(+)
diff --git a/tests/test-hbitmap.c b/tests/test-hbitmap.c
index abcea0c..a341803 100644
--- a/tests/test-hbitmap.c
+++ b/tests/test-hbitmap.c
@@ -14,6 +14,7 @@
#include <string.h>
#include <sys/types.h>
#include "qemu/hbitmap.h"
+#include "block/block.h"
#define LOG_BITS_PER_LONG (BITS_PER_LONG == 32 ? 5 : 6)
@@ -23,6 +24,7 @@
typedef struct TestHBitmapData {
HBitmap *hb;
+ HBitmap *meta;
unsigned long *bits;
size_t size;
size_t old_size;
@@ -94,6 +96,14 @@ 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 = (bits + BITS_PER_LONG - 1) / BITS_PER_LONG;
@@ -136,6 +146,9 @@ 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;
}
@@ -637,6 +650,103 @@ 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))
{
@@ -686,6 +796,12 @@ 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;
--
2.4.3
