Type of Visitor class that can be passed into a qapi-generated C
type's visitor function to free() any heap-allocated data types.
Signed-off-by: Michael Roth <mdr...@linux.vnet.ibm.com>
---
Makefile.objs | 2 +-
qapi/qapi-dealloc-visitor.c | 138 +++++++++++++++++++++++++++++++++++++++++++
qapi/qapi-dealloc-visitor.h | 26 ++++++++
3 files changed, 165 insertions(+), 1 deletions(-)
create mode 100644 qapi/qapi-dealloc-visitor.c
create mode 100644 qapi/qapi-dealloc-visitor.h
diff --git a/Makefile.objs b/Makefile.objs
index 7f9cba5..08f69e5 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -375,7 +375,7 @@ libcacard-y = cac.o event.o vcard.o vreader.o
vcard_emul_nss.o vcard_emul_type.o
######################################################################
# qapi
-qapi-nested-y = qapi-visit-core.o qmp-input-visitor.o qmp-output-visitor.o
+qapi-nested-y = qapi-visit-core.o qmp-input-visitor.o qmp-output-visitor.o
qapi-dealloc-visitor.o
qapi-obj-y = $(addprefix qapi/, $(qapi-nested-y))
vl.o: QEMU_CFLAGS+=$(GPROF_CFLAGS)
diff --git a/qapi/qapi-dealloc-visitor.c b/qapi/qapi-dealloc-visitor.c
new file mode 100644
index 0000000..7525df3
--- /dev/null
+++ b/qapi/qapi-dealloc-visitor.c
@@ -0,0 +1,138 @@
+/*
+ * Dealloc Visitor
+ *
+ * Copyright IBM, Corp. 2011
+ *
+ * Authors:
+ * Michael Roth <mdr...@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ *
+ */
+
+#include "qapi-dealloc-visitor.h"
+#include "qemu-queue.h"
+#include "qemu-common.h"
+#include "qemu-objects.h"
+
+typedef struct StackEntry
+{
+ void *value;
+ QTAILQ_ENTRY(StackEntry) node;
+} StackEntry;
+
+struct QapiDeallocVisitor
+{
+ Visitor visitor;
+ QTAILQ_HEAD(, StackEntry) stack;
+};
+
+static QapiDeallocVisitor *to_qov(Visitor *v)
+{
+ return container_of(v, QapiDeallocVisitor, visitor);
+}
+
+static void qapi_dealloc_push(QapiDeallocVisitor *qov, void *value)
+{
+ StackEntry *e = qemu_mallocz(sizeof(*e));
+
+ e->value = value;
+ QTAILQ_INSERT_HEAD(&qov->stack, e, node);
+}
+
+static void *qapi_dealloc_pop(QapiDeallocVisitor *qov)
+{
+ StackEntry *e = QTAILQ_FIRST(&qov->stack);
+ QObject *value;
+ QTAILQ_REMOVE(&qov->stack, e, node);
+ value = e->value;
+ qemu_free(e);
+ return value;
+}
+
+static void qapi_dealloc_start_struct(Visitor *v, void **obj, const char
*kind, const char *name, size_t unused, Error **errp)
+{
+ QapiDeallocVisitor *qov = to_qov(v);
+ qapi_dealloc_push(qov, obj);
+}
+
+static void qapi_dealloc_end_struct(Visitor *v, Error **errp)
+{
+ QapiDeallocVisitor *qov = to_qov(v);
+ void **obj = qapi_dealloc_pop(qov);
+ if (obj) {
+ qemu_free(*obj);
+ }
+}
+
+static void qapi_dealloc_start_list(Visitor *v, const char *name, Error **errp)
+{
+}
+
+static GenericList *qapi_dealloc_next_list(Visitor *v, GenericList **list,
Error **errp)
+{
+ GenericList *retval = *list;
+ qemu_free(retval->value);
+ *list = retval->next;
+ return retval;
+}
+
+static void qapi_dealloc_end_list(Visitor *v, Error **errp)
+{
+}
+
+static void qapi_dealloc_type_str(Visitor *v, char **obj, const char *name,
Error **errp)
+{
+ if (obj) {
+ qemu_free(*obj);
+ }
+}
+
+static void qapi_dealloc_type_int(Visitor *v, int64_t *obj, const char *name,
Error **errp)
+{
+}
+
+static void qapi_dealloc_type_bool(Visitor *v, bool *obj, const char *name,
Error **errp)
+{
+}
+
+static void qapi_dealloc_type_number(Visitor *v, double *obj, const char
*name, Error **errp)
+{
+}
+
+static void qapi_dealloc_type_enum(Visitor *v, int *obj, const char *kind,
const char *name, Error **errp)
+{
+}
+
+Visitor *qapi_dealloc_get_visitor(QapiDeallocVisitor *v)
+{
+ return &v->visitor;
+}
+
+void qapi_dealloc_visitor_cleanup(QapiDeallocVisitor *v)
+{
+ qemu_free(v);
+}
+
+QapiDeallocVisitor *qapi_dealloc_visitor_new(void)
+{
+ QapiDeallocVisitor *v;
+
+ v = qemu_mallocz(sizeof(*v));
+
+ v->visitor.start_struct = qapi_dealloc_start_struct;
+ v->visitor.end_struct = qapi_dealloc_end_struct;
+ v->visitor.start_list = qapi_dealloc_start_list;
+ v->visitor.next_list = qapi_dealloc_next_list;
+ v->visitor.end_list = qapi_dealloc_end_list;
+ v->visitor.type_enum = qapi_dealloc_type_enum;
+ v->visitor.type_int = qapi_dealloc_type_int;
+ v->visitor.type_bool = qapi_dealloc_type_bool;
+ v->visitor.type_str = qapi_dealloc_type_str;
+ v->visitor.type_number = qapi_dealloc_type_number;
+
+ QTAILQ_INIT(&v->stack);
+
+ return v;
+}
diff --git a/qapi/qapi-dealloc-visitor.h b/qapi/qapi-dealloc-visitor.h
new file mode 100644
index 0000000..5842bc7
--- /dev/null
+++ b/qapi/qapi-dealloc-visitor.h
@@ -0,0 +1,26 @@
+/*
+ * Dealloc Visitor
+ *
+ * Copyright IBM, Corp. 2011
+ *
+ * Authors:
+ * Michael Roth <mdr...@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ *
+ */
+
+#ifndef QAPI_DEALLOC_VISITOR_H
+#define QAPI_DEALLOC_VISITOR_H
+
+#include "qapi-visit-core.h"
+
+typedef struct QapiDeallocVisitor QapiDeallocVisitor;
+
+QapiDeallocVisitor *qapi_dealloc_visitor_new(void);
+void qapi_dealloc_visitor_cleanup(QapiDeallocVisitor *d);
+
+Visitor *qapi_dealloc_get_visitor(QapiDeallocVisitor *v);
+
+#endif
--
1.7.0.4
