Add qemu_iovec_reset() (Avi Kivity)
Add a helper to zero out an existing iovec. Removes the need to deallocate
and reallocate it.
Signed-off-by: Avi Kivity <[email protected]>
Signed-off-by: Anthony Liguori <[email protected]>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6523 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/cutils.c b/cutils.c
index 1090aa4..658746b 100644
--- a/cutils.c
+++ b/cutils.c
@@ -129,6 +129,12 @@
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;
diff --git a/qemu-common.h b/qemu-common.h
index 8aef558..db33493 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -201,6 +201,7 @@
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);
