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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
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>
-rw-r--r--Makefile1
-rw-r--r--qint.c66
-rw-r--r--qint.h16
-rw-r--r--qobject.h1
4 files changed, 84 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index bdac9b331..9bf5fb5bf 100644
--- a/Makefile
+++ b/Makefile
@@ -91,6 +91,7 @@ obj-y += buffered_file.o migration.o migration-tcp.o net.o qemu-sockets.o
obj-y += qemu-char.o aio.o net-checksum.o savevm.o
obj-y += msmouse.o ps2.o
obj-y += qdev.o qdev-properties.o ssi.o
+obj-y += qint.o
obj-$(CONFIG_BRLAPI) += baum.o
obj-$(CONFIG_WIN32) += tap-win32.o
diff --git a/qint.c b/qint.c
new file mode 100644
index 000000000..9a5690689
--- /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,
+};
diff --git a/qint.h b/qint.h
new file mode 100644
index 000000000..672b32196
--- /dev/null
+++ b/qint.h
@@ -0,0 +1,16 @@
+#ifndef QINT_H
+#define QINT_H
+
+#include <stdint.h>
+#include "qobject.h"
+
+typedef struct QInt {
+ QObject_HEAD;
+ int64_t value;
+} QInt;
+
+QInt *qint_from_int(int64_t value);
+int64_t qint_get_int(const QInt *qi);
+QInt *qobject_to_qint(const QObject *obj);
+
+#endif /* QINT_H */
diff --git a/qobject.h b/qobject.h
index 80c85bad2..c6bee8ec6 100644
--- a/qobject.h
+++ b/qobject.h
@@ -37,6 +37,7 @@
typedef enum {
QTYPE_NONE,
+ QTYPE_QINT,
} qtype_code;
struct QObject;