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| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2019-06-04 19:15:03 +0300 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2019-08-27 14:52:45 +0100 |
| commit | d953169d4840f312d3b9a54952f4a7ccfcb3b311 (patch) | |
| tree | 79c227914cced3681a12abfd8c28f143f60419e0 /include/qemu | |
| parent | dac03af5d5482ec7ee9c23db467bb7230b33c0d9 (diff) | |
| download | qemu-d953169d4840f312d3b9a54952f4a7ccfcb3b311.zip qemu-d953169d4840f312d3b9a54952f4a7ccfcb3b311.tar.gz qemu-d953169d4840f312d3b9a54952f4a7ccfcb3b311.tar.bz2 | |
util/iov: introduce qemu_iovec_init_extended
Introduce new initialization API, to create requests with padding. Will
be used in the following patch. New API uses qemu_iovec_init_buf if
resulting io vector has only one element, to avoid extra allocations.
So, we need to update qemu_iovec_destroy to support destroying such
QIOVs.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190604161514.262241-2-vsementsov@virtuozzo.com
Message-Id: <20190604161514.262241-2-vsementsov@virtuozzo.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'include/qemu')
| -rw-r--r-- | include/qemu/iov.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/qemu/iov.h b/include/qemu/iov.h index 48b4598..f3787a0 100644 --- a/include/qemu/iov.h +++ b/include/qemu/iov.h @@ -199,6 +199,13 @@ static inline void *qemu_iovec_buf(QEMUIOVector *qiov) void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint); void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov); +void qemu_iovec_init_extended( + QEMUIOVector *qiov, + void *head_buf, size_t head_len, + QEMUIOVector *mid_qiov, size_t mid_offset, size_t mid_len, + void *tail_buf, size_t tail_len); +void qemu_iovec_init_slice(QEMUIOVector *qiov, QEMUIOVector *source, + size_t offset, size_t len); void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len); void qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t soffset, size_t sbytes); |