Long live QDeadlineTimer

It's like QElapsedTimer, but marks a time in the future instead.

[ChangeLog][QtCore] Added QDeadlineTimer, a counterpart to
QElapsedTimer, used to mark a time point in the future (a deadline) and
determine whether such a deadline has passed.

Change-Id: Ifea6e497f11a461db432ffff144921f7fbc1d1d3
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 59 insertions, 0 deletions

diff --git a/src/corelib/kernel/qdeadlinetimer_p.h b/src/corelib/kernel/qdeadlinetimer_p.h
new file mode 100644
index 0000000000..94ded921e1
--- /dev/null
+++ b/src/corelib/kernel/qdeadlinetimer_p.h
@@ -0,0 +1,59 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QDEADLINETIMER_P_H
+#define QDEADLINETIMER_P_H
+
+#include <QtCore/qglobal.h>
+
+QT_BEGIN_NAMESPACE
+
+enum {
+#if defined(Q_OS_UNIX) && !defined(Q_OS_DARWIN)
+    // t1 contains seconds and t2 contains nanoseconds
+    QDeadlineTimerNanosecondsInT2 = 1
+#else
+    // t1 contains nanoseconds, t2 is always zero
+    QDeadlineTimerNanosecondsInT2 = 0
+#endif
+};
+
+QT_END_NAMESPACE
+
+#endif