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| author | Max Reitz <mreitz@redhat.com> | 2016-11-15 23:57:45 +0100 |
|---|---|---|
| committer | Fam Zheng <famz@redhat.com> | 2017-01-26 10:25:01 +0800 |
| commit | 20a579de8484096d18e65751ebe63fee31551f04 (patch) | |
| tree | b18432ea3cce4bb67817676b72a8c1e2ee0c3bb3 /include | |
| parent | c7f1cf01b8245762ca5864e835d84f6677ae8b1f (diff) | |
| download | qemu-20a579de8484096d18e65751ebe63fee31551f04.tar.gz | |
hbitmap: Add hbitmap_is_serializable()
Bitmaps with a granularity of 58 or above can be neither serialized nor
deserialized (see the comment in the function added in this series for
an explanation). This patch adds a function so that we can check whether
a bitmap actually can be (de-)serialized at all, thus avoiding failing
the necessary assertion in hbitmap_serialization_granularity().
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20161115225746.3590-2-mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Diffstat (limited to 'include')
| -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 eb464759d5..9239fe515e 100644 --- a/include/qemu/hbitmap.h +++ b/include/qemu/hbitmap.h @@ -146,6 +146,19 @@ void hbitmap_reset_all(HBitmap *hb); bool hbitmap_get(const HBitmap *hb, uint64_t item); /** + * hbitmap_is_serializable: + * @hb: HBitmap which should be (de-)serialized. + * + * Returns whether the bitmap can actually be (de-)serialized. Other + * (de-)serialization functions may only be invoked if this function returns + * true. + * + * Calling (de-)serialization functions does not affect a bitmap's + * (de-)serializability. + */ +bool hbitmap_is_serializable(const HBitmap *hb); + +/** * hbitmap_serialization_granularity: * @hb: HBitmap to operate on. * |