SensorService performance improvements.

  i) Send ack for wake_up sensors on the socket connection instead of using Binder RPC.
  ii) Cache events per connection in case there are write failures. Compute cache size
      from FIFO counts of sensors.
 iii) Send FlushCompleteEvent only for apps that explicitly called flush().

Change-Id: I018969736b7794b1b930529586f2294a03ee8667

1 files changed, 5 insertions, 0 deletions

diff --git a/libs/gui/BitTube.cpp b/libs/gui/BitTube.cpp
index 0282834703..3ed1f370a5 100644
--- a/libs/gui/BitTube.cpp
+++ b/libs/gui/BitTube.cpp
@@ -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;