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fix a bug with vsync management 

this bug was introduced recently. we were signaling *all* clients
regardless of the vsync rate.

Change-Id: I2ae8a6c820a390f602382596ba75e8ed737fb2ef
This commit is contained in:
Mathias Agopian 2012-01-12 16:13:54 -08:00
parent e8045dc60e
commit 616c0cdf2c
1 changed files with 7 additions and 8 deletions
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15
services/surfaceflinger/EventThread.cpp
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@ -102,7 +102,7 @@ bool EventThread::threadLoop() {
nsecs_t timestamp;
DisplayEventReceiver::Event vsync;
KeyedVector< wp<DisplayEventConnection>, ConnectionInfo > displayEventConnections;
Vector< wp<DisplayEventConnection> > displayEventConnections;
{ // scope for the lock
Mutex::Autolock _l(mLock);
@ -153,6 +153,9 @@ bool EventThread::threadLoop() {
}
info.count--;
}
if (reportVsync) {
displayEventConnections.add(mDisplayEventConnections.keyAt(i));
}
}
if (reportVsync) {
@ -164,15 +167,11 @@ bool EventThread::threadLoop() {
vsync.header.type = DisplayEventReceiver::DISPLAY_EVENT_VSYNC;
vsync.header.timestamp = timestamp;
vsync.vsync.count = mDeliveredEvents;
// make a copy of our connection list, so we can
// dispatch events without holding mLock
displayEventConnections = mDisplayEventConnections;
}
const size_t count = displayEventConnections.size();
for (size_t i=0 ; i<count ; i++) {
sp<DisplayEventConnection> conn(displayEventConnections.keyAt(i).promote());
sp<DisplayEventConnection> conn(displayEventConnections[i].promote());
// make sure the connection didn't die
if (conn != NULL) {
status_t err = conn->postEvent(vsync);
@ -186,12 +185,12 @@ bool EventThread::threadLoop() {
// handle any other error on the pipe as fatal. the only
// reasonable thing to do is to clean-up this connection.
// The most common error we'll get here is -EPIPE.
removeDisplayEventConnection(displayEventConnections.keyAt(i));
removeDisplayEventConnection(displayEventConnections[i]);
}
} else {
// somehow the connection is dead, but we still have it in our list
// just clean the list.
removeDisplayEventConnection(displayEventConnections.keyAt(i));
removeDisplayEventConnection(displayEventConnections[i]);
}
}