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author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2020-02-05 14:20:37 +0300 |
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committer | John Snow <jsnow@redhat.com> | 2020-03-18 14:03:46 -0400 |
commit | 9399c54b7557a20bc78aaecf2d51983cfafbbf41 (patch) | |
tree | 19261c083bb14e67cdf630a36f08398daf778d7b /include/qemu | |
parent | 642700fda029ed6b4051db7eab8f704131217643 (diff) | |
download | qemu-9399c54b7557a20bc78aaecf2d51983cfafbbf41.zip qemu-9399c54b7557a20bc78aaecf2d51983cfafbbf41.tar.gz qemu-9399c54b7557a20bc78aaecf2d51983cfafbbf41.tar.bz2 |
block/dirty-bitmap: add _next_dirty API
We have bdrv_dirty_bitmap_next_zero, let's add corresponding
bdrv_dirty_bitmap_next_dirty, which is more comfortable to use than
bitmap iterators in some cases.
For test modify test_hbitmap_next_zero_check_range to check both
next_zero and next_dirty and add some new checks.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20200205112041.6003-7-vsementsov@virtuozzo.com
Signed-off-by: John Snow <jsnow@redhat.com>
Diffstat (limited to 'include/qemu')
-rw-r--r-- | include/qemu/hbitmap.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/qemu/hbitmap.h b/include/qemu/hbitmap.h index b6e85f3..6e9ae51 100644 --- a/include/qemu/hbitmap.h +++ b/include/qemu/hbitmap.h @@ -297,6 +297,19 @@ void hbitmap_free(HBitmap *hb); */ void hbitmap_iter_init(HBitmapIter *hbi, const HBitmap *hb, uint64_t first); +/* + * hbitmap_next_dirty: + * + * Find next dirty bit within selected range. If not found, return -1. + * + * @hb: The HBitmap to operate on + * @start: The bit to start from. + * @count: Number of bits to proceed. If @start+@count > bitmap size, the whole + * bitmap is looked through. You can use INT64_MAX as @count to search up to + * the bitmap end. + */ +int64_t hbitmap_next_dirty(const HBitmap *hb, int64_t start, int64_t count); + /* hbitmap_next_zero: * * Find next not dirty bit within selected range. If not found, return -1. |