aboutsummaryrefslogtreecommitdiff
path: root/include/qapi/clone-visitor.h
diff options
context:
space:
mode:
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 /include/qapi/clone-visitor.h
parent0785bd7a7c58ffaf533f484cb0661671a64ecffd (diff)
downloadqemu-4626a19c86c30d96cedbac2bd44ef8103303cb37.zip
qemu-4626a19c86c30d96cedbac2bd44ef8103303cb37.tar.gz
qemu-4626a19c86c30d96cedbac2bd44ef8103303cb37.tar.bz2
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 'include/qapi/clone-visitor.h')
-rw-r--r--include/qapi/clone-visitor.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/qapi/clone-visitor.h b/include/qapi/clone-visitor.h
index b16177e..a4915c7 100644
--- a/include/qapi/clone-visitor.h
+++ b/include/qapi/clone-visitor.h
@@ -24,6 +24,9 @@ typedef struct QapiCloneVisitor QapiCloneVisitor;
void *qapi_clone(const void *src, void (*visit_type)(Visitor *, const char *,
void **, Error **));
+void qapi_clone_members(void *dst, const void *src, size_t sz,
+ void (*visit_type_members)(Visitor *, void *,
+ Error **));
/*
* Deep-clone QAPI object @src of the given @type, and return the result.
@@ -36,4 +39,15 @@ void *qapi_clone(const void *src, void (*visit_type)(Visitor *, const char *,
(void (*)(Visitor *, const char *, void**, \
Error **))visit_type_ ## type))
+/*
+ * Copy deep clones of @type members from @src to @dst.
+ *
+ * Not usable on QAPI scalars (integers, strings, enums), nor on a
+ * QAPI object that references the 'any' type.
+ */
+#define QAPI_CLONE_MEMBERS(type, dst, src) \
+ qapi_clone_members(dst, src, sizeof(type), \
+ (void (*)(Visitor *, void *, \
+ Error **))visit_type_ ## type ## _members)
+
#endif