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[Qemu-devel] [PATCH v1][ 15/23] qapi: add QAPI dealloc visiter
From: |
Michael Roth |
Subject: |
[Qemu-devel] [PATCH v1][ 15/23] qapi: add QAPI dealloc visiter |
Date: |
Tue, 17 May 2011 19:52:02 -0500 |
Type of Visiter class that can be passed into a qapi-generated C
type's visiter function to free() any heap-allocated data types.
Signed-off-by: Michael Roth <address@hidden>
---
qapi/qapi-dealloc-visiter.c | 125 +++++++++++++++++++++++++++++++++++++++++++
qapi/qapi-dealloc-visiter.h | 13 +++++
2 files changed, 138 insertions(+), 0 deletions(-)
create mode 100644 qapi/qapi-dealloc-visiter.c
create mode 100644 qapi/qapi-dealloc-visiter.h
diff --git a/qapi/qapi-dealloc-visiter.c b/qapi/qapi-dealloc-visiter.c
new file mode 100644
index 0000000..3c669cc
--- /dev/null
+++ b/qapi/qapi-dealloc-visiter.c
@@ -0,0 +1,125 @@
+#include "qapi-dealloc-visiter.h"
+#include "qemu-queue.h"
+#include "qemu-common.h"
+#include "qemu-objects.h"
+
+typedef struct StackEntry
+{
+ void *value;
+ QTAILQ_ENTRY(StackEntry) node;
+} StackEntry;
+
+struct QapiDeallocVisiter
+{
+ Visiter visiter;
+ QTAILQ_HEAD(, StackEntry) stack;
+};
+
+static QapiDeallocVisiter *to_qov(Visiter *v)
+{
+ return container_of(v, QapiDeallocVisiter, visiter);
+}
+
+static void qapi_dealloc_push(QapiDeallocVisiter *qov, void *value)
+{
+ StackEntry *e = qemu_mallocz(sizeof(*e));
+
+ e->value = value;
+ QTAILQ_INSERT_HEAD(&qov->stack, e, node);
+}
+
+static void *qapi_dealloc_pop(QapiDeallocVisiter *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(Visiter *v, void **obj, const char
*kind, const char *name, Error **errp)
+{
+ QapiDeallocVisiter *qov = to_qov(v);
+ qapi_dealloc_push(qov, obj);
+}
+
+static void qapi_dealloc_end_struct(Visiter *v, Error **errp)
+{
+ QapiDeallocVisiter *qov = to_qov(v);
+ void **obj = qapi_dealloc_pop(qov);
+ if (obj && *obj) {
+ qemu_free(*obj);
+ }
+}
+
+static void qapi_dealloc_start_list(Visiter *v, const char *name, Error **errp)
+{
+}
+
+static GenericList *qapi_dealloc_next_list(Visiter *v, GenericList **list,
Error **errp)
+{
+ GenericList *retval = *list;
+ assert(retval->value);
+ qemu_free(retval->value);
+ *list = retval->next;
+ return retval;
+}
+
+static void qapi_dealloc_end_list(Visiter *v, Error **errp)
+{
+}
+
+static void qapi_dealloc_type_str(Visiter *v, char **obj, const char *name,
Error **errp)
+{
+ assert(obj && *obj);
+ qemu_free(*obj);
+}
+
+static void qapi_dealloc_type_int(Visiter *v, int64_t *obj, const char *name,
Error **errp)
+{
+}
+
+static void qapi_dealloc_type_bool(Visiter *v, bool *obj, const char *name,
Error **errp)
+{
+}
+
+static void qapi_dealloc_type_number(Visiter *v, double *obj, const char
*name, Error **errp)
+{
+}
+
+static void qapi_dealloc_type_enum(Visiter *v, int *obj, const char *kind,
const char *name, Error **errp)
+{
+}
+
+Visiter *qapi_dealloc_get_visiter(QapiDeallocVisiter *v)
+{
+ return &v->visiter;
+}
+
+void qapi_dealloc_visiter_cleanup(QapiDeallocVisiter *v)
+{
+ qemu_free(v);
+}
+
+QapiDeallocVisiter *qapi_dealloc_visiter_new(void)
+{
+ QapiDeallocVisiter *v;
+
+ v = qemu_mallocz(sizeof(*v));
+
+ v->visiter.start_struct = qapi_dealloc_start_struct;
+ v->visiter.end_struct = qapi_dealloc_end_struct;
+ v->visiter.start_list = qapi_dealloc_start_list;
+ v->visiter.next_list = qapi_dealloc_next_list;
+ v->visiter.end_list = qapi_dealloc_end_list;
+ v->visiter.type_enum = qapi_dealloc_type_enum;
+ v->visiter.type_int = qapi_dealloc_type_int;
+ v->visiter.type_bool = qapi_dealloc_type_bool;
+ v->visiter.type_str = qapi_dealloc_type_str;
+ v->visiter.type_number = qapi_dealloc_type_number;
+
+ QTAILQ_INIT(&v->stack);
+
+ return v;
+}
diff --git a/qapi/qapi-dealloc-visiter.h b/qapi/qapi-dealloc-visiter.h
new file mode 100644
index 0000000..df1fa20
--- /dev/null
+++ b/qapi/qapi-dealloc-visiter.h
@@ -0,0 +1,13 @@
+#ifndef QAPI_DEALLOC_VISITER_H
+#define QAPI_DEALLOC_VISITER_H
+
+#include "qapi-visit-core.h"
+
+typedef struct QapiDeallocVisiter QapiDeallocVisiter;
+
+QapiDeallocVisiter *qapi_dealloc_visiter_new(void);
+void qapi_dealloc_visiter_cleanup(QapiDeallocVisiter *d);
+
+Visiter *qapi_dealloc_get_visiter(QapiDeallocVisiter *v);
+
+#endif
--
1.7.0.4
- Re: [Qemu-devel] [PATCH v1][ 05/23] qlist: add qlist_first()/qlist_next(), (continued)
- [Qemu-devel] [PATCH v1][ 03/23] error-propagation: build qemu with with error-propagation bits, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 07/23] qapi: add ordereddict/qapi.py helper libraries, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 06/23] qapi: add module init types for qapi, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 08/23] qapi: add qapi-types.py code generator, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 09/23] qapi: add qapi-visit.py code generator, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 10/23] qapi: add qapi-commands.py code generator, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 11/23] qapi: add qapi-types-core.h, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 12/23] qapi: add qapi-visit-core.h, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 15/23] qapi: add QAPI dealloc visiter,
Michael Roth <=
- [Qemu-devel] [PATCH v1][ 13/23] qapi: add QMP input visiter, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 16/23] qapi: add command registration/lookup functions, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 14/23] qapi: add QMP output visiter, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 17/23] qapi: add QMP dispatch functions, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 19/23] qapi: test schema used for unit tests, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 20/23] qapi: add test-visiter, tests for gen. visiter code, Michael Roth, 2011/05/17
- [Qemu-devel] [PATCH v1][ 21/23] qapi: Makefile changes to build test-visiter, Michael Roth, 2011/05/17