qemu/qlist.h
Luiz Capitulino 59eb1c85cd QList: Introduce QLIST_FOREACH_ENTRY()
Iterate over QList entries, it's needed to call qlist_entry_obj()
to retrieve the stored QObject.

I'm not sure if it's ok to have this, because it's not as easy as
qlist_iter() and the QListEntry data type is now exposed to the
users, which means we have one more struct to be maintained when
we have libqmp.

Adding anyway, as it's more compact and people are asking for it.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-26 15:42:01 -06:00

52 lines
1.3 KiB
C

/*
* QList data type header.
*
* Copyright (C) 2009 Red Hat Inc.
*
* Authors:
* Luiz Capitulino <lcapitulino@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*/
#ifndef QLIST_H
#define QLIST_H
#include "qobject.h"
#include "qemu-queue.h"
#include "qemu-common.h"
typedef struct QListEntry {
QObject *value;
QTAILQ_ENTRY(QListEntry) next;
} QListEntry;
typedef struct QList {
QObject_HEAD;
QTAILQ_HEAD(,QListEntry) head;
} QList;
#define qlist_append(qlist, obj) \
qlist_append_obj(qlist, QOBJECT(obj))
#define QLIST_FOREACH_ENTRY(qlist, var) \
for ((var) = ((qlist)->head.tqh_first); \
(var); \
(var) = ((var)->next.tqe_next))
static inline QObject *qlist_entry_obj(const QListEntry *entry)
{
return entry->value;
}
QList *qlist_new(void);
QList *qlist_copy(QList *src);
void qlist_append_obj(QList *qlist, QObject *obj);
void qlist_iter(const QList *qlist,
void (*iter)(QObject *obj, void *opaque), void *opaque);
QObject *qlist_pop(QList *qlist);
QObject *qlist_peek(QList *qlist);
int qlist_empty(const QList *qlist);
QList *qobject_to_qlist(const QObject *obj);
#endif /* QLIST_H */