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Add qemu_iovec_reset() (Avi Kivity)

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Add a helper to zero out an existing iovec.  Removes the need to deallocate
and reallocate it.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6523 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2009-02-05 21:23:54 +00:00
parent 244ab90e17
commit be959463af
2 changed files with 7 additions and 0 deletions
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6
cutils.c
View File

@ -129,6 +129,12 @@ void qemu_iovec_destroy(QEMUIOVector *qiov)
qemu_free(qiov->iov);
}
void qemu_iovec_reset(QEMUIOVector *qiov)
{
qiov->niov = 0;
qiov->size = 0;
}
void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf)
{
uint8_t *p = (uint8_t *)buf;

1
qemu-common.h
View File

@ -201,6 +201,7 @@ typedef struct QEMUIOVector {
void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
void qemu_iovec_destroy(QEMUIOVector *qiov);
void qemu_iovec_reset(QEMUIOVector *qiov);
void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf);
void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);