|
1 |
/*
|
|
2 |
* Core Definitions for QAPI/QMP Command Registry
|
|
3 |
*
|
|
4 |
* Copyright IBM, Corp. 2011
|
|
5 |
*
|
|
6 |
* Authors:
|
|
7 |
* Anthony Liguori <aliguori@us.ibm.com>
|
|
8 |
*
|
|
9 |
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
|
|
10 |
* See the COPYING.LIB file in the top-level directory.
|
|
11 |
*
|
|
12 |
*/
|
|
13 |
|
|
14 |
#include "qmp-output-visitor.h"
|
|
15 |
#include "qemu-queue.h"
|
|
16 |
#include "qemu-common.h"
|
|
17 |
#include "qemu-objects.h"
|
|
18 |
#include "qerror.h"
|
|
19 |
|
|
20 |
typedef struct QStackEntry
|
|
21 |
{
|
|
22 |
QObject *value;
|
|
23 |
QTAILQ_ENTRY(QStackEntry) node;
|
|
24 |
} QStackEntry;
|
|
25 |
|
|
26 |
typedef QTAILQ_HEAD(QStack, QStackEntry) QStack;
|
|
27 |
|
|
28 |
struct QmpOutputVisitor
|
|
29 |
{
|
|
30 |
Visitor visitor;
|
|
31 |
QStack stack;
|
|
32 |
};
|
|
33 |
|
|
34 |
#define qmp_output_add(qov, name, value) \
|
|
35 |
qmp_output_add_obj(qov, name, QOBJECT(value))
|
|
36 |
#define qmp_output_push(qov, value) qmp_output_push_obj(qov, QOBJECT(value))
|
|
37 |
|
|
38 |
static QmpOutputVisitor *to_qov(Visitor *v)
|
|
39 |
{
|
|
40 |
return container_of(v, QmpOutputVisitor, visitor);
|
|
41 |
}
|
|
42 |
|
|
43 |
static void qmp_output_push_obj(QmpOutputVisitor *qov, QObject *value)
|
|
44 |
{
|
|
45 |
QStackEntry *e = qemu_mallocz(sizeof(*e));
|
|
46 |
|
|
47 |
e->value = value;
|
|
48 |
QTAILQ_INSERT_HEAD(&qov->stack, e, node);
|
|
49 |
}
|
|
50 |
|
|
51 |
static QObject *qmp_output_pop(QmpOutputVisitor *qov)
|
|
52 |
{
|
|
53 |
QStackEntry *e = QTAILQ_FIRST(&qov->stack);
|
|
54 |
QObject *value;
|
|
55 |
QTAILQ_REMOVE(&qov->stack, e, node);
|
|
56 |
value = e->value;
|
|
57 |
qemu_free(e);
|
|
58 |
return value;
|
|
59 |
}
|
|
60 |
|
|
61 |
static QObject *qmp_output_first(QmpOutputVisitor *qov)
|
|
62 |
{
|
|
63 |
QStackEntry *e = QTAILQ_LAST(&qov->stack, QStack);
|
|
64 |
return e->value;
|
|
65 |
}
|
|
66 |
|
|
67 |
static QObject *qmp_output_last(QmpOutputVisitor *qov)
|
|
68 |
{
|
|
69 |
QStackEntry *e = QTAILQ_FIRST(&qov->stack);
|
|
70 |
return e->value;
|
|
71 |
}
|
|
72 |
|
|
73 |
static void qmp_output_add_obj(QmpOutputVisitor *qov, const char *name,
|
|
74 |
QObject *value)
|
|
75 |
{
|
|
76 |
QObject *cur;
|
|
77 |
|
|
78 |
if (QTAILQ_EMPTY(&qov->stack)) {
|
|
79 |
qmp_output_push_obj(qov, value);
|
|
80 |
return;
|
|
81 |
}
|
|
82 |
|
|
83 |
cur = qmp_output_last(qov);
|
|
84 |
|
|
85 |
switch (qobject_type(cur)) {
|
|
86 |
case QTYPE_QDICT:
|
|
87 |
qdict_put_obj(qobject_to_qdict(cur), name, value);
|
|
88 |
break;
|
|
89 |
case QTYPE_QLIST:
|
|
90 |
qlist_append_obj(qobject_to_qlist(cur), value);
|
|
91 |
break;
|
|
92 |
default:
|
|
93 |
qobject_decref(qmp_output_pop(qov));
|
|
94 |
qmp_output_push_obj(qov, value);
|
|
95 |
break;
|
|
96 |
}
|
|
97 |
}
|
|
98 |
|
|
99 |
static void qmp_output_start_struct(Visitor *v, void **obj, const char *kind,
|
|
100 |
const char *name, size_t unused,
|
|
101 |
Error **errp)
|
|
102 |
{
|
|
103 |
QmpOutputVisitor *qov = to_qov(v);
|
|
104 |
QDict *dict = qdict_new();
|
|
105 |
|
|
106 |
qmp_output_add(qov, name, dict);
|
|
107 |
qmp_output_push(qov, dict);
|
|
108 |
}
|
|
109 |
|
|
110 |
static void qmp_output_end_struct(Visitor *v, Error **errp)
|
|
111 |
{
|
|
112 |
QmpOutputVisitor *qov = to_qov(v);
|
|
113 |
qmp_output_pop(qov);
|
|
114 |
}
|
|
115 |
|
|
116 |
static void qmp_output_start_list(Visitor *v, const char *name, Error **errp)
|
|
117 |
{
|
|
118 |
QmpOutputVisitor *qov = to_qov(v);
|
|
119 |
QList *list = qlist_new();
|
|
120 |
|
|
121 |
qmp_output_add(qov, name, list);
|
|
122 |
qmp_output_push(qov, list);
|
|
123 |
}
|
|
124 |
|
|
125 |
static GenericList *qmp_output_next_list(Visitor *v, GenericList **list,
|
|
126 |
Error **errp)
|
|
127 |
{
|
|
128 |
GenericList *retval = *list;
|
|
129 |
*list = retval->next;
|
|
130 |
return retval;
|
|
131 |
}
|
|
132 |
|
|
133 |
static void qmp_output_end_list(Visitor *v, Error **errp)
|
|
134 |
{
|
|
135 |
QmpOutputVisitor *qov = to_qov(v);
|
|
136 |
qmp_output_pop(qov);
|
|
137 |
}
|
|
138 |
|
|
139 |
static void qmp_output_type_int(Visitor *v, int64_t *obj, const char *name,
|
|
140 |
Error **errp)
|
|
141 |
{
|
|
142 |
QmpOutputVisitor *qov = to_qov(v);
|
|
143 |
qmp_output_add(qov, name, qint_from_int(*obj));
|
|
144 |
}
|
|
145 |
|
|
146 |
static void qmp_output_type_bool(Visitor *v, bool *obj, const char *name,
|
|
147 |
Error **errp)
|
|
148 |
{
|
|
149 |
QmpOutputVisitor *qov = to_qov(v);
|
|
150 |
qmp_output_add(qov, name, qbool_from_int(*obj));
|
|
151 |
}
|
|
152 |
|
|
153 |
static void qmp_output_type_str(Visitor *v, char **obj, const char *name,
|
|
154 |
Error **errp)
|
|
155 |
{
|
|
156 |
QmpOutputVisitor *qov = to_qov(v);
|
|
157 |
if (*obj) {
|
|
158 |
qmp_output_add(qov, name, qstring_from_str(*obj));
|
|
159 |
} else {
|
|
160 |
qmp_output_add(qov, name, qstring_from_str(""));
|
|
161 |
}
|
|
162 |
}
|
|
163 |
|
|
164 |
static void qmp_output_type_number(Visitor *v, double *obj, const char *name,
|
|
165 |
Error **errp)
|
|
166 |
{
|
|
167 |
QmpOutputVisitor *qov = to_qov(v);
|
|
168 |
qmp_output_add(qov, name, qfloat_from_double(*obj));
|
|
169 |
}
|
|
170 |
|
|
171 |
static void qmp_output_type_enum(Visitor *v, int *obj, const char *strings[],
|
|
172 |
const char *kind, const char *name,
|
|
173 |
Error **errp)
|
|
174 |
{
|
|
175 |
int i = 0;
|
|
176 |
int value = *obj;
|
|
177 |
char *enum_str;
|
|
178 |
|
|
179 |
assert(strings);
|
|
180 |
while (strings[i++] != NULL);
|
|
181 |
if (value >= i - 1) {
|
|
182 |
error_set(errp, QERR_INVALID_PARAMETER, name ? name : "null");
|
|
183 |
return;
|
|
184 |
}
|
|
185 |
|
|
186 |
enum_str = (char *)strings[value];
|
|
187 |
qmp_output_type_str(v, &enum_str, name, errp);
|
|
188 |
}
|
|
189 |
|
|
190 |
QObject *qmp_output_get_qobject(QmpOutputVisitor *qov)
|
|
191 |
{
|
|
192 |
QObject *obj = qmp_output_first(qov);
|
|
193 |
if (obj) {
|
|
194 |
qobject_incref(obj);
|
|
195 |
}
|
|
196 |
return obj;
|
|
197 |
}
|
|
198 |
|
|
199 |
Visitor *qmp_output_get_visitor(QmpOutputVisitor *v)
|
|
200 |
{
|
|
201 |
return &v->visitor;
|
|
202 |
}
|
|
203 |
|
|
204 |
void qmp_output_visitor_cleanup(QmpOutputVisitor *v)
|
|
205 |
{
|
|
206 |
QStackEntry *e, *tmp;
|
|
207 |
|
|
208 |
QTAILQ_FOREACH_SAFE(e, &v->stack, node, tmp) {
|
|
209 |
QTAILQ_REMOVE(&v->stack, e, node);
|
|
210 |
if (e->value) {
|
|
211 |
qobject_decref(e->value);
|
|
212 |
}
|
|
213 |
qemu_free(e);
|
|
214 |
}
|
|
215 |
|
|
216 |
qemu_free(v);
|
|
217 |
}
|
|
218 |
|
|
219 |
QmpOutputVisitor *qmp_output_visitor_new(void)
|
|
220 |
{
|
|
221 |
QmpOutputVisitor *v;
|
|
222 |
|
|
223 |
v = qemu_mallocz(sizeof(*v));
|
|
224 |
|
|
225 |
v->visitor.start_struct = qmp_output_start_struct;
|
|
226 |
v->visitor.end_struct = qmp_output_end_struct;
|
|
227 |
v->visitor.start_list = qmp_output_start_list;
|
|
228 |
v->visitor.next_list = qmp_output_next_list;
|
|
229 |
v->visitor.end_list = qmp_output_end_list;
|
|
230 |
v->visitor.type_enum = qmp_output_type_enum;
|
|
231 |
v->visitor.type_int = qmp_output_type_int;
|
|
232 |
v->visitor.type_bool = qmp_output_type_bool;
|
|
233 |
v->visitor.type_str = qmp_output_type_str;
|
|
234 |
v->visitor.type_number = qmp_output_type_number;
|
|
235 |
|
|
236 |
QTAILQ_INIT(&v->stack);
|
|
237 |
|
|
238 |
return v;
|
|
239 |
}
|