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authorLuiz Capitulino <lcapitulino@redhat.com>2009-08-28 15:27:05 -0300
committerAnthony Liguori <aliguori@us.ibm.com>2009-09-04 09:37:29 -0500
commit6b8d1ece705752cb0214fb89ccd3925eddc62df8 (patch)
tree450e655a60e90b51cb6cdbcf919dd8f8e229dd2e /qint.c
parent5a1a2356490399c9b7eb850f9065af554b18cfd1 (diff)
Introduce QInt
QInt is a high-level data type that can be used to represent integers, internally it stores an int64_t value. The following functions are available: - qint_from_int() Create a new QInt - qint_get_int() Get the stored integer Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'qint.c')
-rw-r--r--qint.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/qint.c b/qint.c
new file mode 100644
index 0000000000..9a56906895
--- /dev/null
+++ b/qint.c
@@ -0,0 +1,66 @@
+/*
+ * QInt data type.
+ *
+ * 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.
+ */
+#include "qint.h"
+#include "qobject.h"
+#include "qemu-common.h"
+
+static const QType qint_type;
+
+/**
+ * qint_from_int(): Create a new QInt from an int64_t
+ *
+ * Return strong reference.
+ */
+QInt *qint_from_int(int64_t value)
+{
+ QInt *qi;
+
+ qi = qemu_malloc(sizeof(*qi));
+ qi->value = value;
+ QOBJECT_INIT(qi, &qint_type);
+
+ return qi;
+}
+
+/**
+ * qint_get_int(): Get the stored integer
+ */
+int64_t qint_get_int(const QInt *qi)
+{
+ return qi->value;
+}
+
+/**
+ * qobject_to_qint(): Convert a QObject into a QInt
+ */
+QInt *qobject_to_qint(const QObject *obj)
+{
+ if (qobject_type(obj) != QTYPE_QINT)
+ return NULL;
+
+ return container_of(obj, QInt, base);
+}
+
+/**
+ * qint_destroy_obj(): Free all memory allocated by a
+ * QInt object
+ */
+static void qint_destroy_obj(QObject *obj)
+{
+ assert(obj != NULL);
+ qemu_free(qobject_to_qint(obj));
+}
+
+static const QType qint_type = {
+ .code = QTYPE_QINT,
+ .destroy = qint_destroy_obj,
+};