x86_64: Align uint64_t/int64_t structure member to 8 bytes
To make sure the stature which pass between 32/64bit process have
same memory layout for 32/64bit.
Signed-off-by: Fengwei Yin <fengwei.yin@intel.com>
Co-Authored-by: Narayan Kamath <narayan@google.com> (Unit test only.)
Change-Id: I1bc2d12cce41ec0bc484adcaf968f274bec75c12
diff --git a/libs/input/tests/StructLayout_test.cpp b/libs/input/tests/StructLayout_test.cpp
new file mode 100644
index 0000000..83bc6ae
--- /dev/null
+++ b/libs/input/tests/StructLayout_test.cpp
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <input/InputTransport.h>
+#include <input/Input.h>
+
+namespace android {
+
+#define CHECK_OFFSET(type, member, expected_offset) \
+ static_assert((offsetof(type, member) == expected_offset), "")
+
+struct Foo {
+ uint32_t dummy;
+ PointerCoords coords;
+};
+
+void TestPointerCoordsAlignment() {
+ CHECK_OFFSET(Foo, coords, 8);
+}
+
+void TestInputMessageAlignment() {
+ CHECK_OFFSET(InputMessage, body, 8);
+
+ CHECK_OFFSET(InputMessage::Body::Key, seq, 0);
+ CHECK_OFFSET(InputMessage::Body::Key, eventTime, 8);
+ CHECK_OFFSET(InputMessage::Body::Key, deviceId, 16);
+ CHECK_OFFSET(InputMessage::Body::Key, source, 20);
+ CHECK_OFFSET(InputMessage::Body::Key, action, 24);
+ CHECK_OFFSET(InputMessage::Body::Key, flags, 28);
+ CHECK_OFFSET(InputMessage::Body::Key, keyCode, 32);
+ CHECK_OFFSET(InputMessage::Body::Key, scanCode, 36);
+ CHECK_OFFSET(InputMessage::Body::Key, metaState, 40);
+ CHECK_OFFSET(InputMessage::Body::Key, repeatCount, 44);
+ CHECK_OFFSET(InputMessage::Body::Key, downTime, 48);
+
+ CHECK_OFFSET(InputMessage::Body::Motion, seq, 0);
+ CHECK_OFFSET(InputMessage::Body::Motion, eventTime, 8);
+ CHECK_OFFSET(InputMessage::Body::Motion, deviceId, 16);
+ CHECK_OFFSET(InputMessage::Body::Motion, source, 20);
+ CHECK_OFFSET(InputMessage::Body::Motion, action, 24);
+ CHECK_OFFSET(InputMessage::Body::Motion, flags, 28);
+ CHECK_OFFSET(InputMessage::Body::Motion, metaState, 32);
+ CHECK_OFFSET(InputMessage::Body::Motion, buttonState, 36);
+ CHECK_OFFSET(InputMessage::Body::Motion, edgeFlags, 40);
+ CHECK_OFFSET(InputMessage::Body::Motion, downTime, 48);
+ CHECK_OFFSET(InputMessage::Body::Motion, xOffset, 56);
+ CHECK_OFFSET(InputMessage::Body::Motion, yOffset, 60);
+ CHECK_OFFSET(InputMessage::Body::Motion, xPrecision, 64);
+ CHECK_OFFSET(InputMessage::Body::Motion, yPrecision, 68);
+ CHECK_OFFSET(InputMessage::Body::Motion, pointerCount, 72);
+ CHECK_OFFSET(InputMessage::Body::Motion, pointers, 80);
+}
+
+} // namespace android