4 * Copyright (C) 2009 Red Hat Inc.
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.
13 #include "qemu/osdep.h"
14 #include "qapi/qmp/qbool.h"
15 #include "qapi/qmp/qlist.h"
16 #include "qapi/qmp/qnull.h"
17 #include "qapi/qmp/qnum.h"
18 #include "qapi/qmp/qstring.h"
19 #include "qemu/queue.h"
20 #include "qemu-common.h"
23 * qlist_new(): Create a new QList
25 * Return strong reference.
27 QList *qlist_new(void)
31 qlist = g_malloc(sizeof(*qlist));
32 qobject_init(QOBJECT(qlist), QTYPE_QLIST);
33 QTAILQ_INIT(&qlist->head);
38 static void qlist_copy_elem(QObject *obj, void *opaque)
43 qlist_append_obj(dst, obj);
46 QList *qlist_copy(QList *src)
48 QList *dst = qlist_new();
50 qlist_iter(src, qlist_copy_elem, dst);
56 * qlist_append_obj(): Append an QObject into QList
58 * NOTE: ownership of 'value' is transferred to the QList
60 void qlist_append_obj(QList *qlist, QObject *value)
64 entry = g_malloc(sizeof(*entry));
67 QTAILQ_INSERT_TAIL(&qlist->head, entry, next);
70 void qlist_append_int(QList *qlist, int64_t value)
72 qlist_append(qlist, qnum_from_int(value));
75 void qlist_append_bool(QList *qlist, bool value)
77 qlist_append(qlist, qbool_from_bool(value));
80 void qlist_append_str(QList *qlist, const char *value)
82 qlist_append(qlist, qstring_from_str(value));
85 void qlist_append_null(QList *qlist)
87 qlist_append(qlist, qnull());
91 * qlist_iter(): Iterate over all the list's stored values.
93 * This function allows the user to provide an iterator, which will be
94 * called for each stored value in the list.
96 void qlist_iter(const QList *qlist,
97 void (*iter)(QObject *obj, void *opaque), void *opaque)
101 QTAILQ_FOREACH(entry, &qlist->head, next)
102 iter(entry->value, opaque);
105 QObject *qlist_pop(QList *qlist)
110 if (qlist == NULL || QTAILQ_EMPTY(&qlist->head)) {
114 entry = QTAILQ_FIRST(&qlist->head);
115 QTAILQ_REMOVE(&qlist->head, entry, next);
123 QObject *qlist_peek(QList *qlist)
127 if (qlist == NULL || QTAILQ_EMPTY(&qlist->head)) {
131 entry = QTAILQ_FIRST(&qlist->head);
136 int qlist_empty(const QList *qlist)
138 return QTAILQ_EMPTY(&qlist->head);
141 static void qlist_size_iter(QObject *obj, void *opaque)
143 size_t *count = opaque;
147 size_t qlist_size(const QList *qlist)
150 qlist_iter(qlist, qlist_size_iter, &count);
155 * qobject_to_qlist(): Convert a QObject into a QList
157 QList *qobject_to_qlist(const QObject *obj)
159 if (!obj || qobject_type(obj) != QTYPE_QLIST) {
162 return container_of(obj, QList, base);
166 * qlist_is_equal(): Test whether the two QLists are equal
168 * In order to be considered equal, the respective two objects at each
169 * index of the two lists have to compare equal (regarding
170 * qobject_is_equal()), and both lists have to have the same number of
172 * That means both lists have to contain equal objects in equal order.
174 bool qlist_is_equal(const QObject *x, const QObject *y)
176 const QList *list_x = qobject_to_qlist(x);
177 const QList *list_y = qobject_to_qlist(y);
178 const QListEntry *entry_x, *entry_y;
180 entry_x = qlist_first(list_x);
181 entry_y = qlist_first(list_y);
183 while (entry_x && entry_y) {
184 if (!qobject_is_equal(qlist_entry_obj(entry_x),
185 qlist_entry_obj(entry_y)))
190 entry_x = qlist_next(entry_x);
191 entry_y = qlist_next(entry_y);
194 return !entry_x && !entry_y;
198 * qlist_destroy_obj(): Free all the memory allocated by a QList
200 void qlist_destroy_obj(QObject *obj)
203 QListEntry *entry, *next_entry;
206 qlist = qobject_to_qlist(obj);
208 QTAILQ_FOREACH_SAFE(entry, &qlist->head, next, next_entry) {
209 QTAILQ_REMOVE(&qlist->head, entry, next);
210 qobject_decref(entry->value);