1 /*
2 * Copyright (C) 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <gtest/gtest.h>
18 #include <gui/DisplayEventReceiver.h>
19
20 namespace android::test {
21
22 #define CHECK_OFFSET(type, member, expected_offset) \
23 static_assert((offsetof(type, member) == (expected_offset)), "")
24
TEST(DisplayEventStructLayoutTest,TestEventAlignment)25 TEST(DisplayEventStructLayoutTest, TestEventAlignment) {
26 CHECK_OFFSET(DisplayEventReceiver::Event, vsync, 24);
27 CHECK_OFFSET(DisplayEventReceiver::Event, hotplug, 24);
28 CHECK_OFFSET(DisplayEventReceiver::Event, modeChange, 24);
29
30 CHECK_OFFSET(DisplayEventReceiver::Event::Header, type, 0);
31 CHECK_OFFSET(DisplayEventReceiver::Event::Header, displayId, 8);
32 CHECK_OFFSET(DisplayEventReceiver::Event::Header, timestamp, 16);
33
34 CHECK_OFFSET(DisplayEventReceiver::Event::VSync, count, 0);
35 CHECK_OFFSET(DisplayEventReceiver::Event::VSync, expectedVSyncTimestamp, 8);
36 CHECK_OFFSET(DisplayEventReceiver::Event::VSync, deadlineTimestamp, 16);
37 CHECK_OFFSET(DisplayEventReceiver::Event::VSync, frameInterval, 24);
38 CHECK_OFFSET(DisplayEventReceiver::Event::VSync, vsyncId, 32);
39
40 CHECK_OFFSET(DisplayEventReceiver::Event::Hotplug, connected, 0);
41
42 CHECK_OFFSET(DisplayEventReceiver::Event::ModeChange, modeId, 0);
43 CHECK_OFFSET(DisplayEventReceiver::Event::ModeChange, vsyncPeriod, 8);
44
45 CHECK_OFFSET(DisplayEventReceiver::Event::FrameRateOverride, uid, 0);
46 CHECK_OFFSET(DisplayEventReceiver::Event::FrameRateOverride, frameRateHz, 8);
47 }
48
49 } // namespace android::test
50