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9be385980d
Use Coccinelle script to replace 'ret = E; return ret' with 'return E'. The script will do the substitution only when the function return type and variable type are the same. Manual fixups: * audio/audio.c: coding style of "read (...)" and "write (...)" * block/qcow2-cluster.c: wrap line to make it shorter * block/qcow2-refcount.c: change indentation of wrapped line * target-tricore/op_helper.c: fix coding style of "remainder|quotient" * target-mips/dsp_helper.c: reverted changes because I don't want to argue about checkpatch.pl * ui/qemu-pixman.c: fix line indentation * block/rbd.c: restore blank line between declarations and statements Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1465855078-19435-4-git-send-email-ehabkost@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [Unused Coccinelle rule name dropped along with a redundant comment; whitespace touched up in block/qcow2-cluster.c; stale commit message paragraph deleted] Signed-off-by: Markus Armbruster <armbru@redhat.com>
161 lines
3.1 KiB
C
161 lines
3.1 KiB
C
/*
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* QList Module
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*
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* Copyright (C) 2009 Red Hat Inc.
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*
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* Authors:
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* Luiz Capitulino <lcapitulino@redhat.com>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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* See the COPYING.LIB file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qapi/qmp/qlist.h"
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#include "qapi/qmp/qobject.h"
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#include "qemu/queue.h"
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#include "qemu-common.h"
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/**
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* qlist_new(): Create a new QList
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*
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* Return strong reference.
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*/
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QList *qlist_new(void)
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{
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QList *qlist;
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qlist = g_malloc(sizeof(*qlist));
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qobject_init(QOBJECT(qlist), QTYPE_QLIST);
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QTAILQ_INIT(&qlist->head);
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return qlist;
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}
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static void qlist_copy_elem(QObject *obj, void *opaque)
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{
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QList *dst = opaque;
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qobject_incref(obj);
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qlist_append_obj(dst, obj);
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}
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QList *qlist_copy(QList *src)
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{
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QList *dst = qlist_new();
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qlist_iter(src, qlist_copy_elem, dst);
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return dst;
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}
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/**
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* qlist_append_obj(): Append an QObject into QList
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*
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* NOTE: ownership of 'value' is transferred to the QList
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*/
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void qlist_append_obj(QList *qlist, QObject *value)
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{
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QListEntry *entry;
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entry = g_malloc(sizeof(*entry));
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entry->value = value;
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QTAILQ_INSERT_TAIL(&qlist->head, entry, next);
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}
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/**
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* qlist_iter(): Iterate over all the list's stored values.
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*
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* This function allows the user to provide an iterator, which will be
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* called for each stored value in the list.
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*/
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void qlist_iter(const QList *qlist,
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void (*iter)(QObject *obj, void *opaque), void *opaque)
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{
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QListEntry *entry;
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QTAILQ_FOREACH(entry, &qlist->head, next)
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iter(entry->value, opaque);
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}
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QObject *qlist_pop(QList *qlist)
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{
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QListEntry *entry;
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QObject *ret;
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if (qlist == NULL || QTAILQ_EMPTY(&qlist->head)) {
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return NULL;
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}
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entry = QTAILQ_FIRST(&qlist->head);
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QTAILQ_REMOVE(&qlist->head, entry, next);
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ret = entry->value;
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g_free(entry);
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return ret;
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}
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QObject *qlist_peek(QList *qlist)
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{
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QListEntry *entry;
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if (qlist == NULL || QTAILQ_EMPTY(&qlist->head)) {
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return NULL;
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}
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entry = QTAILQ_FIRST(&qlist->head);
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return entry->value;
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}
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int qlist_empty(const QList *qlist)
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{
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return QTAILQ_EMPTY(&qlist->head);
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}
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static void qlist_size_iter(QObject *obj, void *opaque)
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{
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size_t *count = opaque;
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(*count)++;
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}
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size_t qlist_size(const QList *qlist)
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{
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size_t count = 0;
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qlist_iter(qlist, qlist_size_iter, &count);
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return count;
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}
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/**
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* qobject_to_qlist(): Convert a QObject into a QList
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*/
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QList *qobject_to_qlist(const QObject *obj)
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{
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if (!obj || qobject_type(obj) != QTYPE_QLIST) {
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return NULL;
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}
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return container_of(obj, QList, base);
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}
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/**
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* qlist_destroy_obj(): Free all the memory allocated by a QList
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*/
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void qlist_destroy_obj(QObject *obj)
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{
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QList *qlist;
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QListEntry *entry, *next_entry;
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assert(obj != NULL);
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qlist = qobject_to_qlist(obj);
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QTAILQ_FOREACH_SAFE(entry, &qlist->head, next, next_entry) {
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QTAILQ_REMOVE(&qlist->head, entry, next);
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qobject_decref(entry->value);
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g_free(entry);
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}
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g_free(qlist);
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}
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