commit ffde786ffce1afcd7ee574e7b45026d651ac1779
author Fan Xu <fanxu@google.com> Thu Nov 08 16:29:13 2018 -0800
committer Fan Xu <fanxu@google.com> Wed Nov 14 10:42:21 2018 -0800
tree c6ee2a9f13c21b0125653b897402b8f7ec72606b
parent 18d90eaf05d8b3a21a68d84ebf23ea2326067aad

Add a service-unique ID to BufferNode

All the BufferNode allocated by bufferhub hwservice now will have a
unique ID generated and managed by the UniqueIdGenerator.

The idGenerator is placed in global static namespace because 1)
therefore it is process-unique 2) BufferNode could still access it
without a reference to the service instance.

Added UniqueIdGenerator_test.

Test: UniqueIdGenerator_test, BufferNode_test, buffer_hub-test,
BufferHubBuffer_test passed.
Fix: 118844348
Change-Id: I9c9adebab3af7b9de71dbe8728d3f24ed231338d

services/bufferhub/Android.bp

diff --git a/services/bufferhub/Android.bp b/services/bufferhub/Android.bp
index 8b43333..28a7501 100644
--- a/services/bufferhub/Android.bp
+++ b/services/bufferhub/Android.bp
@@ -25,6 +25,7 @@
         "BufferClient.cpp",
         "BufferHubService.cpp",
         "BufferNode.cpp",
+        "UniqueIdGenerator.cpp",
     ],
     header_libs: [
         "libbufferhub_headers",