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authorMarkus Armbruster <armbru@redhat.com>2017-04-26 09:36:38 +0200
committerMarkus Armbruster <armbru@redhat.com>2017-05-09 09:14:40 +0200
commit4626a19c86c30d96cedbac2bd44ef8103303cb37 (patch)
tree6b0046a6d3b2f57eb2cf9fcd562c60372c88b11e /qapi/qapi-clone-visitor.c
parent0785bd7a7c58ffaf533f484cb0661671a64ecffd (diff)
downloadfocaccia-qemu-4626a19c86c30d96cedbac2bd44ef8103303cb37.tar.gz
focaccia-qemu-4626a19c86c30d96cedbac2bd44ef8103303cb37.zip
qapi: New QAPI_CLONE_MEMBERS()
QAPI_CLONE() returns a newly allocated QAPI object.  Inconvenient when
we want to clone into an existing object.  QAPI_CLONE_MEMBERS() does
exactly that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1493192202-3184-4-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'qapi/qapi-clone-visitor.c')
-rw-r--r--qapi/qapi-clone-visitor.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/qapi/qapi-clone-visitor.c b/qapi/qapi-clone-visitor.c
index 34086cbfc0..de756bfb33 100644
--- a/qapi/qapi-clone-visitor.c
+++ b/qapi/qapi-clone-visitor.c
@@ -180,3 +180,16 @@ void *qapi_clone(const void *src, void (*visit_type)(Visitor *, const char *,
     visit_free(v);
     return dst;
 }
+
+void qapi_clone_members(void *dst, const void *src, size_t sz,
+                        void (*visit_type_members)(Visitor *, void *,
+                                                   Error **))
+{
+    Visitor *v;
+
+    v = qapi_clone_visitor_new();
+    memcpy(dst, src, sz);
+    to_qcv(v)->depth++;
+    visit_type_members(v, dst, &error_abort);
+    visit_free(v);
+}