diff options
Diffstat (limited to 'contrib/qemu/qobject/qdict.c')
| -rw-r--r-- | contrib/qemu/qobject/qdict.c | 478 | 
1 files changed, 0 insertions, 478 deletions
diff --git a/contrib/qemu/qobject/qdict.c b/contrib/qemu/qobject/qdict.c deleted file mode 100644 index ed381f9a507..00000000000 --- a/contrib/qemu/qobject/qdict.c +++ /dev/null @@ -1,478 +0,0 @@ -/* - * QDict Module - * - * Copyright (C) 2009 Red Hat Inc. - * - * Authors: - *  Luiz Capitulino <lcapitulino@redhat.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/qmp/qint.h" -#include "qapi/qmp/qfloat.h" -#include "qapi/qmp/qdict.h" -#include "qapi/qmp/qbool.h" -#include "qapi/qmp/qstring.h" -#include "qapi/qmp/qobject.h" -#include "qemu/queue.h" -#include "qemu-common.h" - -static void qdict_destroy_obj(QObject *obj); - -static const QType qdict_type = { -    .code = QTYPE_QDICT, -    .destroy = qdict_destroy_obj, -}; - -/** - * qdict_new(): Create a new QDict - * - * Return strong reference. - */ -QDict *qdict_new(void) -{ -    QDict *qdict; - -    qdict = g_malloc0(sizeof(*qdict)); -    QOBJECT_INIT(qdict, &qdict_type); - -    return qdict; -} - -/** - * qobject_to_qdict(): Convert a QObject into a QDict - */ -QDict *qobject_to_qdict(const QObject *obj) -{ -    if (qobject_type(obj) != QTYPE_QDICT) -        return NULL; - -    return container_of(obj, QDict, base); -} - -/** - * tdb_hash(): based on the hash agorithm from gdbm, via tdb - * (from module-init-tools) - */ -static unsigned int tdb_hash(const char *name) -{ -    unsigned value;	/* Used to compute the hash value.  */ -    unsigned   i;	/* Used to cycle through random values. */ - -    /* Set the initial value from the key size. */ -    for (value = 0x238F13AF * strlen(name), i=0; name[i]; i++) -        value = (value + (((const unsigned char *)name)[i] << (i*5 % 24))); - -    return (1103515243 * value + 12345); -} - -/** - * alloc_entry(): allocate a new QDictEntry - */ -static QDictEntry *alloc_entry(const char *key, QObject *value) -{ -    QDictEntry *entry; - -    entry = g_malloc0(sizeof(*entry)); -    entry->key = g_strdup(key); -    entry->value = value; - -    return entry; -} - -/** - * qdict_entry_value(): Return qdict entry value - * - * Return weak reference. - */ -QObject *qdict_entry_value(const QDictEntry *entry) -{ -    return entry->value; -} - -/** - * qdict_entry_key(): Return qdict entry key - * - * Return a *pointer* to the string, it has to be duplicated before being - * stored. - */ -const char *qdict_entry_key(const QDictEntry *entry) -{ -    return entry->key; -} - -/** - * qdict_find(): List lookup function - */ -static QDictEntry *qdict_find(const QDict *qdict, -                              const char *key, unsigned int bucket) -{ -    QDictEntry *entry; - -    QLIST_FOREACH(entry, &qdict->table[bucket], next) -        if (!strcmp(entry->key, key)) -            return entry; - -    return NULL; -} - -/** - * qdict_put_obj(): Put a new QObject into the dictionary - * - * Insert the pair 'key:value' into 'qdict', if 'key' already exists - * its 'value' will be replaced. - * - * This is done by freeing the reference to the stored QObject and - * storing the new one in the same entry. - * - * NOTE: ownership of 'value' is transferred to the QDict - */ -void qdict_put_obj(QDict *qdict, const char *key, QObject *value) -{ -    unsigned int bucket; -    QDictEntry *entry; - -    bucket = tdb_hash(key) % QDICT_BUCKET_MAX; -    entry = qdict_find(qdict, key, bucket); -    if (entry) { -        /* replace key's value */ -        qobject_decref(entry->value); -        entry->value = value; -    } else { -        /* allocate a new entry */ -        entry = alloc_entry(key, value); -        QLIST_INSERT_HEAD(&qdict->table[bucket], entry, next); -        qdict->size++; -    } -} - -/** - * qdict_get(): Lookup for a given 'key' - * - * Return a weak reference to the QObject associated with 'key' if - * 'key' is present in the dictionary, NULL otherwise. - */ -QObject *qdict_get(const QDict *qdict, const char *key) -{ -    QDictEntry *entry; - -    entry = qdict_find(qdict, key, tdb_hash(key) % QDICT_BUCKET_MAX); -    return (entry == NULL ? NULL : entry->value); -} - -/** - * qdict_haskey(): Check if 'key' exists - * - * Return 1 if 'key' exists in the dict, 0 otherwise - */ -int qdict_haskey(const QDict *qdict, const char *key) -{ -    unsigned int bucket = tdb_hash(key) % QDICT_BUCKET_MAX; -    return (qdict_find(qdict, key, bucket) == NULL ? 0 : 1); -} - -/** - * qdict_size(): Return the size of the dictionary - */ -size_t qdict_size(const QDict *qdict) -{ -    return qdict->size; -} - -/** - * qdict_get_obj(): Get a QObject of a specific type - */ -static QObject *qdict_get_obj(const QDict *qdict, const char *key, -                              qtype_code type) -{ -    QObject *obj; - -    obj = qdict_get(qdict, key); -    assert(obj != NULL); -    assert(qobject_type(obj) == type); - -    return obj; -} - -/** - * qdict_get_double(): Get an number mapped by 'key' - * - * This function assumes that 'key' exists and it stores a - * QFloat or QInt object. - * - * Return number mapped by 'key'. - */ -double qdict_get_double(const QDict *qdict, const char *key) -{ -    QObject *obj = qdict_get(qdict, key); - -    assert(obj); -    switch (qobject_type(obj)) { -    case QTYPE_QFLOAT: -        return qfloat_get_double(qobject_to_qfloat(obj)); -    case QTYPE_QINT: -        return qint_get_int(qobject_to_qint(obj)); -    default: -        abort(); -    } -} - -/** - * qdict_get_int(): Get an integer mapped by 'key' - * - * This function assumes that 'key' exists and it stores a - * QInt object. - * - * Return integer mapped by 'key'. - */ -int64_t qdict_get_int(const QDict *qdict, const char *key) -{ -    QObject *obj = qdict_get_obj(qdict, key, QTYPE_QINT); -    return qint_get_int(qobject_to_qint(obj)); -} - -/** - * qdict_get_bool(): Get a bool mapped by 'key' - * - * This function assumes that 'key' exists and it stores a - * QBool object. - * - * Return bool mapped by 'key'. - */ -int qdict_get_bool(const QDict *qdict, const char *key) -{ -    QObject *obj = qdict_get_obj(qdict, key, QTYPE_QBOOL); -    return qbool_get_int(qobject_to_qbool(obj)); -} - -/** - * qdict_get_qlist(): Get the QList mapped by 'key' - * - * This function assumes that 'key' exists and it stores a - * QList object. - * - * Return QList mapped by 'key'. - */ -QList *qdict_get_qlist(const QDict *qdict, const char *key) -{ -    return qobject_to_qlist(qdict_get_obj(qdict, key, QTYPE_QLIST)); -} - -/** - * qdict_get_qdict(): Get the QDict mapped by 'key' - * - * This function assumes that 'key' exists and it stores a - * QDict object. - * - * Return QDict mapped by 'key'. - */ -QDict *qdict_get_qdict(const QDict *qdict, const char *key) -{ -    return qobject_to_qdict(qdict_get_obj(qdict, key, QTYPE_QDICT)); -} - -/** - * qdict_get_str(): Get a pointer to the stored string mapped - * by 'key' - * - * This function assumes that 'key' exists and it stores a - * QString object. - * - * Return pointer to the string mapped by 'key'. - */ -const char *qdict_get_str(const QDict *qdict, const char *key) -{ -    QObject *obj = qdict_get_obj(qdict, key, QTYPE_QSTRING); -    return qstring_get_str(qobject_to_qstring(obj)); -} - -/** - * qdict_get_try_int(): Try to get integer mapped by 'key' - * - * Return integer mapped by 'key', if it is not present in - * the dictionary or if the stored object is not of QInt type - * 'def_value' will be returned. - */ -int64_t qdict_get_try_int(const QDict *qdict, const char *key, -                          int64_t def_value) -{ -    QObject *obj; - -    obj = qdict_get(qdict, key); -    if (!obj || qobject_type(obj) != QTYPE_QINT) -        return def_value; - -    return qint_get_int(qobject_to_qint(obj)); -} - -/** - * qdict_get_try_bool(): Try to get a bool mapped by 'key' - * - * Return bool mapped by 'key', if it is not present in the - * dictionary or if the stored object is not of QBool type - * 'def_value' will be returned. - */ -int qdict_get_try_bool(const QDict *qdict, const char *key, int def_value) -{ -    QObject *obj; - -    obj = qdict_get(qdict, key); -    if (!obj || qobject_type(obj) != QTYPE_QBOOL) -        return def_value; - -    return qbool_get_int(qobject_to_qbool(obj)); -} - -/** - * qdict_get_try_str(): Try to get a pointer to the stored string - * mapped by 'key' - * - * Return a pointer to the string mapped by 'key', if it is not present - * in the dictionary or if the stored object is not of QString type - * NULL will be returned. - */ -const char *qdict_get_try_str(const QDict *qdict, const char *key) -{ -    QObject *obj; - -    obj = qdict_get(qdict, key); -    if (!obj || qobject_type(obj) != QTYPE_QSTRING) -        return NULL; - -    return qstring_get_str(qobject_to_qstring(obj)); -} - -/** - * qdict_iter(): Iterate over all the dictionary's stored values. - * - * This function allows the user to provide an iterator, which will be - * called for each stored value in the dictionary. - */ -void qdict_iter(const QDict *qdict, -                void (*iter)(const char *key, QObject *obj, void *opaque), -                void *opaque) -{ -    int i; -    QDictEntry *entry; - -    for (i = 0; i < QDICT_BUCKET_MAX; i++) { -        QLIST_FOREACH(entry, &qdict->table[i], next) -            iter(entry->key, entry->value, opaque); -    } -} - -static QDictEntry *qdict_next_entry(const QDict *qdict, int first_bucket) -{ -    int i; - -    for (i = first_bucket; i < QDICT_BUCKET_MAX; i++) { -        if (!QLIST_EMPTY(&qdict->table[i])) { -            return QLIST_FIRST(&qdict->table[i]); -        } -    } - -    return NULL; -} - -/** - * qdict_first(): Return first qdict entry for iteration. - */ -const QDictEntry *qdict_first(const QDict *qdict) -{ -    return qdict_next_entry(qdict, 0); -} - -/** - * qdict_next(): Return next qdict entry in an iteration. - */ -const QDictEntry *qdict_next(const QDict *qdict, const QDictEntry *entry) -{ -    QDictEntry *ret; - -    ret = QLIST_NEXT(entry, next); -    if (!ret) { -        unsigned int bucket = tdb_hash(entry->key) % QDICT_BUCKET_MAX; -        ret = qdict_next_entry(qdict, bucket + 1); -    } - -    return ret; -} - -/** - * qdict_clone_shallow(): Clones a given QDict. Its entries are not copied, but - * another reference is added. - */ -QDict *qdict_clone_shallow(const QDict *src) -{ -    QDict *dest; -    QDictEntry *entry; -    int i; - -    dest = qdict_new(); - -    for (i = 0; i < QDICT_BUCKET_MAX; i++) { -        QLIST_FOREACH(entry, &src->table[i], next) { -            qobject_incref(entry->value); -            qdict_put_obj(dest, entry->key, entry->value); -        } -    } - -    return dest; -} - -/** - * qentry_destroy(): Free all the memory allocated by a QDictEntry - */ -static void qentry_destroy(QDictEntry *e) -{ -    assert(e != NULL); -    assert(e->key != NULL); -    assert(e->value != NULL); - -    qobject_decref(e->value); -    g_free(e->key); -    g_free(e); -} - -/** - * qdict_del(): Delete a 'key:value' pair from the dictionary - * - * This will destroy all data allocated by this entry. - */ -void qdict_del(QDict *qdict, const char *key) -{ -    QDictEntry *entry; - -    entry = qdict_find(qdict, key, tdb_hash(key) % QDICT_BUCKET_MAX); -    if (entry) { -        QLIST_REMOVE(entry, next); -        qentry_destroy(entry); -        qdict->size--; -    } -} - -/** - * qdict_destroy_obj(): Free all the memory allocated by a QDict - */ -static void qdict_destroy_obj(QObject *obj) -{ -    int i; -    QDict *qdict; - -    assert(obj != NULL); -    qdict = qobject_to_qdict(obj); - -    for (i = 0; i < QDICT_BUCKET_MAX; i++) { -        QDictEntry *entry = QLIST_FIRST(&qdict->table[i]); -        while (entry) { -            QDictEntry *tmp = QLIST_NEXT(entry, next); -            QLIST_REMOVE(entry, next); -            qentry_destroy(entry); -            entry = tmp; -        } -    } - -    g_free(qdict); -}  | 
