fix an issue with vsync event delivery
vsync events were sometimes delivered to connected
client who didn't request them. this happened if
another client requested the delivery and that client
was first in the client list.
also fix the vsync test which didn't request any events as
well as DisplayEventReveiver documentation which was misleading
about the necessity to request vsync events.
Change-Id: Ie990fda3f337f8f0042745c4b2cde67936c45686
diff --git a/services/surfaceflinger/tests/vsync/vsync.cpp b/services/surfaceflinger/tests/vsync/vsync.cpp
index 4f79080..b0d54c4 100644
--- a/services/surfaceflinger/tests/vsync/vsync.cpp
+++ b/services/surfaceflinger/tests/vsync/vsync.cpp
@@ -55,6 +55,8 @@
loop->addFd(myDisplayEvent.getFd(), 0, ALOOPER_EVENT_INPUT, receiver,
&myDisplayEvent);
+ myDisplayEvent.setVsyncRate(1);
+
do {
//printf("about to poll...\n");
int32_t ret = loop->pollOnce(-1);