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