qapi: Add new visit_free() function
Making each visitor provide its own (awkwardly-named) FOO_cleanup()
is unusual, when we can instead have a polymorphic visit_free()
interface. Over the next few patches, we can use the polymorphic
functions to eliminate the need for a FOO_get_visitor() function
for accessing specific visitor functionality, once everything can
be accessed directly through the Visitor* interfaces.
The dealloc visitor is the first one converted to completely use
the new entry point, since qapi_dealloc_visitor_cleanup() was the
only reason that qapi_dealloc_get_visitor() existed, and only
generated and testsuite code was even using it. With the new
visit_free() entry point in place, we no longer need to expose
the QapiDeallocVisitor subtype through qapi_dealloc_visitor_new(),
and can get by with less generated code, with diffs that look like:
| void qapi_free_ACPIOSTInfo(ACPIOSTInfo *obj)
| {
|- QapiDeallocVisitor *qdv;
| Visitor *v;
|
| if (!obj) {
| return;
| }
|
|- qdv = qapi_dealloc_visitor_new();
|- v = qapi_dealloc_get_visitor(qdv);
|+ v = qapi_dealloc_visitor_new();
| visit_type_ACPIOSTInfo(v, NULL, &obj, NULL);
|- qapi_dealloc_visitor_cleanup(qdv);
|+ visit_free(v);
|}
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1465490926-28625-5-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
diff --git a/qapi/opts-visitor.c b/qapi/opts-visitor.c
index dcfbf92..72c95ac 100644
--- a/qapi/opts-visitor.c
+++ b/qapi/opts-visitor.c
@@ -513,6 +513,15 @@
}
+static void
+opts_free(Visitor *v)
+{
+ OptsVisitor *ov = to_ov(v);
+
+ opts_visitor_cleanup(ov);
+}
+
+
OptsVisitor *
opts_visitor_new(const QemuOpts *opts)
{
@@ -540,6 +549,7 @@
* skip some mandatory methods... */
ov->visitor.optional = &opts_optional;
+ ov->visitor.free = opts_free;
ov->opts_root = opts;
diff --git a/qapi/qapi-dealloc-visitor.c b/qapi/qapi-dealloc-visitor.c
index 9391dea..e39457b 100644
--- a/qapi/qapi-dealloc-visitor.c
+++ b/qapi/qapi-dealloc-visitor.c
@@ -107,17 +107,12 @@
{
}
-Visitor *qapi_dealloc_get_visitor(QapiDeallocVisitor *v)
+static void qapi_dealloc_free(Visitor *v)
{
- return &v->visitor;
+ g_free(container_of(v, QapiDeallocVisitor, visitor));
}
-void qapi_dealloc_visitor_cleanup(QapiDeallocVisitor *v)
-{
- g_free(v);
-}
-
-QapiDeallocVisitor *qapi_dealloc_visitor_new(void)
+Visitor *qapi_dealloc_visitor_new(void)
{
QapiDeallocVisitor *v;
@@ -138,6 +133,7 @@
v->visitor.type_number = qapi_dealloc_type_number;
v->visitor.type_any = qapi_dealloc_type_anything;
v->visitor.type_null = qapi_dealloc_type_null;
+ v->visitor.free = qapi_dealloc_free;
- return v;
+ return &v->visitor;
}
diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c
index dba11c6..5f68c25 100644
--- a/qapi/qapi-visit-core.c
+++ b/qapi/qapi-visit-core.c
@@ -20,6 +20,13 @@
#include "qapi/visitor.h"
#include "qapi/visitor-impl.h"
+void visit_free(Visitor *v)
+{
+ if (v) {
+ v->free(v);
+ }
+}
+
void visit_start_struct(Visitor *v, const char *name, void **obj,
size_t size, Error **errp)
{
diff --git a/qapi/qmp-input-visitor.c b/qapi/qmp-input-visitor.c
index e16b4b0..41b7f87 100644
--- a/qapi/qmp-input-visitor.c
+++ b/qapi/qmp-input-visitor.c
@@ -378,6 +378,13 @@
return &v->visitor;
}
+static void qmp_input_free(Visitor *v)
+{
+ QmpInputVisitor *qiv = to_qiv(v);
+
+ qmp_input_visitor_cleanup(qiv);
+}
+
void qmp_input_visitor_cleanup(QmpInputVisitor *v)
{
qobject_decref(v->root);
@@ -406,6 +413,7 @@
v->visitor.type_any = qmp_input_type_any;
v->visitor.type_null = qmp_input_type_null;
v->visitor.optional = qmp_input_optional;
+ v->visitor.free = qmp_input_free;
v->strict = strict;
v->root = obj;
diff --git a/qapi/qmp-output-visitor.c b/qapi/qmp-output-visitor.c
index dca8935..5f0035c 100644
--- a/qapi/qmp-output-visitor.c
+++ b/qapi/qmp-output-visitor.c
@@ -214,6 +214,13 @@
return &v->visitor;
}
+static void qmp_output_free(Visitor *v)
+{
+ QmpOutputVisitor *qov = to_qov(v);
+
+ qmp_output_visitor_cleanup(qov);
+}
+
void qmp_output_visitor_cleanup(QmpOutputVisitor *v)
{
QStackEntry *e, *tmp;
@@ -246,6 +253,7 @@
v->visitor.type_number = qmp_output_type_number;
v->visitor.type_any = qmp_output_type_any;
v->visitor.type_null = qmp_output_type_null;
+ v->visitor.free = qmp_output_free;
QTAILQ_INIT(&v->stack);
diff --git a/qapi/string-input-visitor.c b/qapi/string-input-visitor.c
index d7f3c2b..6fb1229 100644
--- a/qapi/string-input-visitor.c
+++ b/qapi/string-input-visitor.c
@@ -331,6 +331,13 @@
return &v->visitor;
}
+static void string_input_free(Visitor *v)
+{
+ StringInputVisitor *siv = to_siv(v);
+
+ string_input_visitor_cleanup(siv);
+}
+
void string_input_visitor_cleanup(StringInputVisitor *v)
{
g_list_foreach(v->ranges, free_range, NULL);
@@ -355,6 +362,7 @@
v->visitor.next_list = next_list;
v->visitor.end_list = end_list;
v->visitor.optional = parse_optional;
+ v->visitor.free = string_input_free;
v->string = str;
return v;
diff --git a/qapi/string-output-visitor.c b/qapi/string-output-visitor.c
index bdc0fd0..ff9ddf0 100644
--- a/qapi/string-output-visitor.c
+++ b/qapi/string-output-visitor.c
@@ -322,6 +322,13 @@
g_free(range);
}
+static void string_output_free(Visitor *v)
+{
+ StringOutputVisitor *sov = to_sov(v);
+
+ string_output_visitor_cleanup(sov);
+}
+
void string_output_visitor_cleanup(StringOutputVisitor *sov)
{
if (sov->string) {
@@ -351,6 +358,7 @@
v->visitor.start_list = start_list;
v->visitor.next_list = next_list;
v->visitor.end_list = end_list;
+ v->visitor.free = string_output_free;
return v;
}
