root / qapi / qapi-dealloc-visitor.c @ 3dce9cad
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1 | d5f3c29c | Michael Roth | /*
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2 | d5f3c29c | Michael Roth | * Dealloc Visitor
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3 | d5f3c29c | Michael Roth | *
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4 | d5f3c29c | Michael Roth | * Copyright IBM, Corp. 2011
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5 | d5f3c29c | Michael Roth | *
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6 | d5f3c29c | Michael Roth | * Authors:
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7 | d5f3c29c | Michael Roth | * Michael Roth <mdroth@linux.vnet.ibm.com>
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8 | d5f3c29c | Michael Roth | *
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9 | d5f3c29c | Michael Roth | * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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10 | d5f3c29c | Michael Roth | * See the COPYING.LIB file in the top-level directory.
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11 | d5f3c29c | Michael Roth | *
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12 | d5f3c29c | Michael Roth | */
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13 | d5f3c29c | Michael Roth | |
14 | 7b1b5d19 | Paolo Bonzini | #include "qapi/dealloc-visitor.h" |
15 | 1de7afc9 | Paolo Bonzini | #include "qemu/queue.h" |
16 | d5f3c29c | Michael Roth | #include "qemu-common.h" |
17 | 7b1b5d19 | Paolo Bonzini | #include "qapi/qmp/types.h" |
18 | 7b1b5d19 | Paolo Bonzini | #include "qapi/visitor-impl.h" |
19 | d5f3c29c | Michael Roth | |
20 | d5f3c29c | Michael Roth | typedef struct StackEntry |
21 | d5f3c29c | Michael Roth | { |
22 | d5f3c29c | Michael Roth | void *value;
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23 | 0b9d8542 | Michael Roth | bool is_list_head;
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24 | d5f3c29c | Michael Roth | QTAILQ_ENTRY(StackEntry) node; |
25 | d5f3c29c | Michael Roth | } StackEntry; |
26 | d5f3c29c | Michael Roth | |
27 | d5f3c29c | Michael Roth | struct QapiDeallocVisitor
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28 | d5f3c29c | Michael Roth | { |
29 | d5f3c29c | Michael Roth | Visitor visitor; |
30 | d5f3c29c | Michael Roth | QTAILQ_HEAD(, StackEntry) stack; |
31 | 5666dd19 | Michael Roth | bool is_list_head;
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32 | d5f3c29c | Michael Roth | }; |
33 | d5f3c29c | Michael Roth | |
34 | d5f3c29c | Michael Roth | static QapiDeallocVisitor *to_qov(Visitor *v)
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35 | d5f3c29c | Michael Roth | { |
36 | d5f3c29c | Michael Roth | return container_of(v, QapiDeallocVisitor, visitor);
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37 | d5f3c29c | Michael Roth | } |
38 | d5f3c29c | Michael Roth | |
39 | d5f3c29c | Michael Roth | static void qapi_dealloc_push(QapiDeallocVisitor *qov, void *value) |
40 | d5f3c29c | Michael Roth | { |
41 | 7267c094 | Anthony Liguori | StackEntry *e = g_malloc0(sizeof(*e));
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42 | d5f3c29c | Michael Roth | |
43 | d5f3c29c | Michael Roth | e->value = value; |
44 | 0b9d8542 | Michael Roth | |
45 | 0b9d8542 | Michael Roth | /* see if we're just pushing a list head tracker */
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46 | 0b9d8542 | Michael Roth | if (value == NULL) { |
47 | 0b9d8542 | Michael Roth | e->is_list_head = true;
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48 | 0b9d8542 | Michael Roth | } |
49 | d5f3c29c | Michael Roth | QTAILQ_INSERT_HEAD(&qov->stack, e, node); |
50 | d5f3c29c | Michael Roth | } |
51 | d5f3c29c | Michael Roth | |
52 | d5f3c29c | Michael Roth | static void *qapi_dealloc_pop(QapiDeallocVisitor *qov) |
53 | d5f3c29c | Michael Roth | { |
54 | d5f3c29c | Michael Roth | StackEntry *e = QTAILQ_FIRST(&qov->stack); |
55 | d5f3c29c | Michael Roth | QObject *value; |
56 | d5f3c29c | Michael Roth | QTAILQ_REMOVE(&qov->stack, e, node); |
57 | d5f3c29c | Michael Roth | value = e->value; |
58 | 7267c094 | Anthony Liguori | g_free(e); |
59 | d5f3c29c | Michael Roth | return value;
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60 | d5f3c29c | Michael Roth | } |
61 | d5f3c29c | Michael Roth | |
62 | d5f3c29c | Michael Roth | static void qapi_dealloc_start_struct(Visitor *v, void **obj, const char *kind, |
63 | d5f3c29c | Michael Roth | const char *name, size_t unused, |
64 | d5f3c29c | Michael Roth | Error **errp) |
65 | d5f3c29c | Michael Roth | { |
66 | d5f3c29c | Michael Roth | QapiDeallocVisitor *qov = to_qov(v); |
67 | d5f3c29c | Michael Roth | qapi_dealloc_push(qov, obj); |
68 | d5f3c29c | Michael Roth | } |
69 | d5f3c29c | Michael Roth | |
70 | d5f3c29c | Michael Roth | static void qapi_dealloc_end_struct(Visitor *v, Error **errp) |
71 | d5f3c29c | Michael Roth | { |
72 | d5f3c29c | Michael Roth | QapiDeallocVisitor *qov = to_qov(v); |
73 | d5f3c29c | Michael Roth | void **obj = qapi_dealloc_pop(qov);
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74 | d5f3c29c | Michael Roth | if (obj) {
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75 | 7267c094 | Anthony Liguori | g_free(*obj); |
76 | d5f3c29c | Michael Roth | } |
77 | d5f3c29c | Michael Roth | } |
78 | d5f3c29c | Michael Roth | |
79 | 3dce9cad | Wenchao Xia | static void qapi_dealloc_start_implicit_struct(Visitor *v, |
80 | 3dce9cad | Wenchao Xia | void **obj,
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81 | 3dce9cad | Wenchao Xia | size_t size, |
82 | 3dce9cad | Wenchao Xia | Error **errp) |
83 | 3dce9cad | Wenchao Xia | { |
84 | 3dce9cad | Wenchao Xia | QapiDeallocVisitor *qov = to_qov(v); |
85 | 3dce9cad | Wenchao Xia | qapi_dealloc_push(qov, obj); |
86 | 3dce9cad | Wenchao Xia | } |
87 | 3dce9cad | Wenchao Xia | |
88 | 3dce9cad | Wenchao Xia | static void qapi_dealloc_end_implicit_struct(Visitor *v, Error **errp) |
89 | 3dce9cad | Wenchao Xia | { |
90 | 3dce9cad | Wenchao Xia | QapiDeallocVisitor *qov = to_qov(v); |
91 | 3dce9cad | Wenchao Xia | void **obj = qapi_dealloc_pop(qov);
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92 | 3dce9cad | Wenchao Xia | if (obj) {
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93 | 3dce9cad | Wenchao Xia | g_free(*obj); |
94 | 3dce9cad | Wenchao Xia | } |
95 | 3dce9cad | Wenchao Xia | } |
96 | 3dce9cad | Wenchao Xia | |
97 | d5f3c29c | Michael Roth | static void qapi_dealloc_start_list(Visitor *v, const char *name, Error **errp) |
98 | d5f3c29c | Michael Roth | { |
99 | 5666dd19 | Michael Roth | QapiDeallocVisitor *qov = to_qov(v); |
100 | 0b9d8542 | Michael Roth | qapi_dealloc_push(qov, NULL);
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101 | d5f3c29c | Michael Roth | } |
102 | d5f3c29c | Michael Roth | |
103 | 5666dd19 | Michael Roth | static GenericList *qapi_dealloc_next_list(Visitor *v, GenericList **listp,
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104 | d5f3c29c | Michael Roth | Error **errp) |
105 | d5f3c29c | Michael Roth | { |
106 | 5666dd19 | Michael Roth | GenericList *list = *listp; |
107 | 5666dd19 | Michael Roth | QapiDeallocVisitor *qov = to_qov(v); |
108 | 0b9d8542 | Michael Roth | StackEntry *e = QTAILQ_FIRST(&qov->stack); |
109 | 5666dd19 | Michael Roth | |
110 | 0b9d8542 | Michael Roth | if (e && e->is_list_head) {
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111 | 0b9d8542 | Michael Roth | e->is_list_head = false;
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112 | 0b9d8542 | Michael Roth | return list;
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113 | 5666dd19 | Michael Roth | } |
114 | 5666dd19 | Michael Roth | |
115 | 0b9d8542 | Michael Roth | if (list) {
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116 | 0b9d8542 | Michael Roth | list = list->next; |
117 | 0b9d8542 | Michael Roth | g_free(*listp); |
118 | 0b9d8542 | Michael Roth | return list;
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119 | 0b9d8542 | Michael Roth | } |
120 | 0b9d8542 | Michael Roth | |
121 | 0b9d8542 | Michael Roth | return NULL; |
122 | d5f3c29c | Michael Roth | } |
123 | d5f3c29c | Michael Roth | |
124 | d5f3c29c | Michael Roth | static void qapi_dealloc_end_list(Visitor *v, Error **errp) |
125 | d5f3c29c | Michael Roth | { |
126 | 0b9d8542 | Michael Roth | QapiDeallocVisitor *qov = to_qov(v); |
127 | 0b9d8542 | Michael Roth | void *obj = qapi_dealloc_pop(qov);
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128 | 0b9d8542 | Michael Roth | assert(obj == NULL); /* should've been list head tracker with no payload */ |
129 | d5f3c29c | Michael Roth | } |
130 | d5f3c29c | Michael Roth | |
131 | d5f3c29c | Michael Roth | static void qapi_dealloc_type_str(Visitor *v, char **obj, const char *name, |
132 | d5f3c29c | Michael Roth | Error **errp) |
133 | d5f3c29c | Michael Roth | { |
134 | d5f3c29c | Michael Roth | if (obj) {
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135 | 7267c094 | Anthony Liguori | g_free(*obj); |
136 | d5f3c29c | Michael Roth | } |
137 | d5f3c29c | Michael Roth | } |
138 | d5f3c29c | Michael Roth | |
139 | d5f3c29c | Michael Roth | static void qapi_dealloc_type_int(Visitor *v, int64_t *obj, const char *name, |
140 | d5f3c29c | Michael Roth | Error **errp) |
141 | d5f3c29c | Michael Roth | { |
142 | d5f3c29c | Michael Roth | } |
143 | d5f3c29c | Michael Roth | |
144 | d5f3c29c | Michael Roth | static void qapi_dealloc_type_bool(Visitor *v, bool *obj, const char *name, |
145 | d5f3c29c | Michael Roth | Error **errp) |
146 | d5f3c29c | Michael Roth | { |
147 | d5f3c29c | Michael Roth | } |
148 | d5f3c29c | Michael Roth | |
149 | d5f3c29c | Michael Roth | static void qapi_dealloc_type_number(Visitor *v, double *obj, const char *name, |
150 | d5f3c29c | Michael Roth | Error **errp) |
151 | d5f3c29c | Michael Roth | { |
152 | d5f3c29c | Michael Roth | } |
153 | d5f3c29c | Michael Roth | |
154 | 1d162526 | Bruce Rogers | static void qapi_dealloc_type_size(Visitor *v, uint64_t *obj, const char *name, |
155 | 0c26f2ec | Stefan Hajnoczi | Error **errp) |
156 | 0c26f2ec | Stefan Hajnoczi | { |
157 | 0c26f2ec | Stefan Hajnoczi | } |
158 | 0c26f2ec | Stefan Hajnoczi | |
159 | d5f3c29c | Michael Roth | static void qapi_dealloc_type_enum(Visitor *v, int *obj, const char *strings[], |
160 | d5f3c29c | Michael Roth | const char *kind, const char *name, |
161 | d5f3c29c | Michael Roth | Error **errp) |
162 | d5f3c29c | Michael Roth | { |
163 | d5f3c29c | Michael Roth | } |
164 | d5f3c29c | Michael Roth | |
165 | d5f3c29c | Michael Roth | Visitor *qapi_dealloc_get_visitor(QapiDeallocVisitor *v) |
166 | d5f3c29c | Michael Roth | { |
167 | d5f3c29c | Michael Roth | return &v->visitor;
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168 | d5f3c29c | Michael Roth | } |
169 | d5f3c29c | Michael Roth | |
170 | d5f3c29c | Michael Roth | void qapi_dealloc_visitor_cleanup(QapiDeallocVisitor *v)
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171 | d5f3c29c | Michael Roth | { |
172 | 7267c094 | Anthony Liguori | g_free(v); |
173 | d5f3c29c | Michael Roth | } |
174 | d5f3c29c | Michael Roth | |
175 | d5f3c29c | Michael Roth | QapiDeallocVisitor *qapi_dealloc_visitor_new(void)
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176 | d5f3c29c | Michael Roth | { |
177 | d5f3c29c | Michael Roth | QapiDeallocVisitor *v; |
178 | d5f3c29c | Michael Roth | |
179 | 7267c094 | Anthony Liguori | v = g_malloc0(sizeof(*v));
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180 | d5f3c29c | Michael Roth | |
181 | d5f3c29c | Michael Roth | v->visitor.start_struct = qapi_dealloc_start_struct; |
182 | d5f3c29c | Michael Roth | v->visitor.end_struct = qapi_dealloc_end_struct; |
183 | 3dce9cad | Wenchao Xia | v->visitor.start_implicit_struct = qapi_dealloc_start_implicit_struct; |
184 | 3dce9cad | Wenchao Xia | v->visitor.end_implicit_struct = qapi_dealloc_end_implicit_struct; |
185 | d5f3c29c | Michael Roth | v->visitor.start_list = qapi_dealloc_start_list; |
186 | d5f3c29c | Michael Roth | v->visitor.next_list = qapi_dealloc_next_list; |
187 | d5f3c29c | Michael Roth | v->visitor.end_list = qapi_dealloc_end_list; |
188 | d5f3c29c | Michael Roth | v->visitor.type_enum = qapi_dealloc_type_enum; |
189 | d5f3c29c | Michael Roth | v->visitor.type_int = qapi_dealloc_type_int; |
190 | d5f3c29c | Michael Roth | v->visitor.type_bool = qapi_dealloc_type_bool; |
191 | d5f3c29c | Michael Roth | v->visitor.type_str = qapi_dealloc_type_str; |
192 | d5f3c29c | Michael Roth | v->visitor.type_number = qapi_dealloc_type_number; |
193 | 0c26f2ec | Stefan Hajnoczi | v->visitor.type_size = qapi_dealloc_type_size; |
194 | d5f3c29c | Michael Roth | |
195 | d5f3c29c | Michael Roth | QTAILQ_INIT(&v->stack); |
196 | d5f3c29c | Michael Roth | |
197 | d5f3c29c | Michael Roth | return v;
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198 | d5f3c29c | Michael Roth | } |