improve [un]marshalling of non-binder objects
this change introduces a new class LightFlattenable<> which is
a protocol to flatten simple objects that don't require
binders or file descriptors; the benefit of this protocol is that
it doesn't require the objects to have a virtual table and give us
a consitant way of doing this.
we also introduce an implementation of this protocol for
POD structures, LightFlattenablePod<>.
Parcel has been update to handle this protocol automatically.
Sensor, Rect, Point and Region now use this new protocol.
Change-Id: Icb3ce7fa1d785249eb666f39c2129f2fc143ea4a
diff --git a/include/gui/Sensor.h b/include/gui/Sensor.h
index e59757a..2af2307 100644
--- a/include/gui/Sensor.h
+++ b/include/gui/Sensor.h
@@ -41,7 +41,7 @@
// ----------------------------------------------------------------------------
-class Sensor : public ASensor, public Flattenable
+class Sensor : public ASensor, public LightFlattenable<Sensor>
{
public:
enum {
@@ -54,7 +54,7 @@
Sensor();
Sensor(struct sensor_t const* hwSensor);
- virtual ~Sensor();
+ ~Sensor();
const String8& getName() const;
const String8& getVendor() const;
@@ -68,13 +68,11 @@
nsecs_t getMinDelayNs() const;
int32_t getVersion() const;
- // Flattenable interface
- virtual size_t getFlattenedSize() const;
- virtual size_t getFdCount() const;
- virtual status_t flatten(void* buffer, size_t size,
- int fds[], size_t count) const;
- virtual status_t unflatten(void const* buffer, size_t size,
- int fds[], size_t count);
+ // LightFlattenable protocol
+ inline bool isFixedSize() const { return false; }
+ size_t getSize() const;
+ status_t flatten(void* buffer) const;
+ status_t unflatten(void const* buffer, size_t size);
private:
String8 mName;