SF: Add systrace lines for layer transactions
Adds new lines to systrace corresponding to when Layers have
transactions (including showing how many transactions are pending when
deferred transactions are used). The new lines are prefixed with "TX - "
to distinguish them from the usual queue occupancy lines.
Test: Manual inspection of systraces
Change-Id: Iebc165a187cf87b6bc1ed4de6595463f5ba9d4fe
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index ae731f7..3cbc2f4 100755
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -126,6 +126,7 @@
mPremultipliedAlpha = false;
mName = name;
+ mTransactionName = String8("TX - ") + mName;
mCurrentState.active.w = w;
mCurrentState.active.h = h;
@@ -1482,6 +1483,7 @@
mFlinger->setTransactionFlags(eTraversalNeeded);
}
mPendingStates.push_back(mCurrentState);
+ ATRACE_INT(mTransactionName.string(), mPendingStates.size());
}
void Layer::popPendingState(State* stateToCommit) {
@@ -1491,6 +1493,7 @@
(stateToCommit->flags & stateToCommit->mask);
mPendingStates.removeAt(0);
+ ATRACE_INT(mTransactionName.string(), mPendingStates.size());
}
bool Layer::applyPendingStates(State* stateToCommit) {