diff options
| -rw-r--r-- | tests/test-hbitmap.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/tests/test-hbitmap.c b/tests/test-hbitmap.c index c0e9895fb9..e3abde1aae 100644 --- a/tests/test-hbitmap.c +++ b/tests/test-hbitmap.c @@ -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; |