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Commit c268068c authored by Aravind Akella's avatar Aravind Akella Committed by Android (Google) Code Review
Browse files

Merge "SensorService performance improvements." into lmp-dev

parents 22956874 56ae4261

include/gui/BitTube.h

+3 −0
Original line number Diff line number Diff line
@@ -48,6 +48,9 @@ public: 
    // get receive file-descriptor

    int getFd() const;



    // get the send file-descriptor.

    int getSendFd() const;



    // send objects (sized blobs). All objects are guaranteed to be written or the call fails.

    template <typename T>

    static ssize_t sendObjects(const sp<BitTube>& tube,

include/gui/ISensorEventConnection.h

+0 −1
Original line number Diff line number Diff line
@@ -40,7 +40,6 @@ public: 
                                   nsecs_t maxBatchReportLatencyNs, int reservedFlags) = 0;

    virtual status_t setEventRate(int handle, nsecs_t ns) = 0;

    virtual status_t flush() = 0;

    virtual void decreaseWakeLockRefCount() = 0;

};



// ----------------------------------------------------------------------------

libs/gui/BitTube.cpp

+5 −0
Original line number Diff line number Diff line
@@ -99,6 +99,11 @@ int BitTube::getFd() const 
    return mReceiveFd;

}



int BitTube::getSendFd() const

{

    return mSendFd;

}



ssize_t BitTube::write(void const* vaddr, size_t size)

{

    ssize_t err, len;

libs/gui/ISensorEventConnection.cpp

+1 −14
Original line number Diff line number Diff line
@@ -34,8 +34,7 @@ enum { 
    GET_SENSOR_CHANNEL = IBinder::FIRST_CALL_TRANSACTION,

    ENABLE_DISABLE,

    SET_EVENT_RATE,

    FLUSH_SENSOR,

    DECREASE_WAKE_LOCK_REFCOUNT

    FLUSH_SENSOR

};



class BpSensorEventConnection : public BpInterface<ISensorEventConnection>
@@ -84,13 +83,6 @@ public: 
        remote()->transact(FLUSH_SENSOR, data, &reply);

        return reply.readInt32();

    }



    virtual void decreaseWakeLockRefCount() {

        Parcel data, reply;

        data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());

        remote()->transact(DECREASE_WAKE_LOCK_REFCOUNT, data, &reply, IBinder::FLAG_ONEWAY);

        return;

    }

};



IMPLEMENT_META_INTERFACE(SensorEventConnection, "android.gui.SensorEventConnection");
@@ -133,11 +125,6 @@ status_t BnSensorEventConnection::onTransact( 
            reply->writeInt32(result);

            return NO_ERROR;

        } break;

        case DECREASE_WAKE_LOCK_REFCOUNT: {

            CHECK_INTERFACE(ISensorEventConnection, data, reply);

            decreaseWakeLockRefCount();

            return NO_ERROR;

        } break;

    }

    return BBinder::onTransact(code, data, reply, flags);

}

libs/gui/SensorEventQueue.cpp

+9 −1
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 


#include <stdint.h>

#include <sys/types.h>

#include <sys/socket.h>



#include <utils/Errors.h>

#include <utils/RefBase.h>
@@ -147,7 +148,14 @@ status_t SensorEventQueue::setEventRate(Sensor const* sensor, nsecs_t ns) const 
void SensorEventQueue::sendAck(const ASensorEvent* events, int count) {

    for (int i = 0; i < count; ++i) {

        if (events[i].flags & WAKE_UP_SENSOR_EVENT_NEEDS_ACK) {

            mSensorEventConnection->decreaseWakeLockRefCount();

            // Send just a byte of data to acknowledge for the wake up sensor events

            // received

            char buf = '1';

            ssize_t size = ::send(mSensorChannel->getFd(), &buf, sizeof(buf),

                                             MSG_DONTWAIT | MSG_NOSIGNAL);

            if (size < 0) {

                ALOGE("sendAck failure %d", size);

            }

        }

    }

    return;