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| author | Vladimir Sementsov-Ogievskiy | 2019-06-04 18:15:04 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi | 2019-08-27 15:52:45 +0200 |
| commit | f76889e7b947d896db51be8a4d9c941c2f70365a (patch) | |
| tree | d233a85f4d166859d08cf38aa556f6297c5f59a6 /include/qemu | |
| parent | util/iov: introduce qemu_iovec_init_extended (diff) | |
| download | qemu-f76889e7b947d896db51be8a4d9c941c2f70365a.tar.gz qemu-f76889e7b947d896db51be8a4d9c941c2f70365a.tar.xz qemu-f76889e7b947d896db51be8a4d9c941c2f70365a.zip | |
util/iov: improve qemu_iovec_is_zero
We'll need to check a part of qiov soon, so implement it now.
Optimization with align down to 4 * sizeof(long) is dropped due to:
1. It is strange: it aligns length of the buffer, but where is a
guarantee that buffer pointer is aligned itself?
2. buffer_is_zero() is a better place for optimizations and it has
them.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190604161514.262241-3-vsementsov@virtuozzo.com
Message-Id: <20190604161514.262241-3-vsementsov@virtuozzo.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'include/qemu')
| -rw-r--r-- | include/qemu/iov.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/qemu/iov.h b/include/qemu/iov.h index f3787a0cf7..29957c8a72 100644 --- a/include/qemu/iov.h +++ b/include/qemu/iov.h @@ -212,7 +212,7 @@ void qemu_iovec_concat(QEMUIOVector *dst, size_t qemu_iovec_concat_iov(QEMUIOVector *dst, struct iovec *src_iov, unsigned int src_cnt, size_t soffset, size_t sbytes); -bool qemu_iovec_is_zero(QEMUIOVector *qiov); +bool qemu_iovec_is_zero(QEMUIOVector *qiov, size_t qiov_offeset, size_t bytes); void qemu_iovec_destroy(QEMUIOVector *qiov); void qemu_iovec_reset(QEMUIOVector *qiov); size_t qemu_iovec_to_buf(QEMUIOVector *qiov, size_t offset, |