Add metrics for logging SurfaceControl events

Currently, we log whenever dataspaces change on a layer. We also log
when a layer is destroyed, so that we can log its last dataspace.

Bug: 329474645
Flag: EXEMPT logging
Test: GraphicsAtomTests

Change-Id: I06f4591a1b523cb565923c7d6e4103f0e294d8ad

1 files changed, 14 insertions, 0 deletions

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 8d16b9fe94..bbdfc1261a 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -83,6 +83,7 @@
 #include <renderengine/RenderEngine.h>
 #include <renderengine/impl/ExternalTexture.h>
 #include <scheduler/FrameTargeter.h>
+#include <statslog_surfaceflinger.h>
 #include <sys/types.h>
 #include <ui/ColorSpace.h>
 #include <ui/DebugUtils.h>
@@ -3157,6 +3158,19 @@ void SurfaceFlinger::onCompositionPresented(PhysicalDisplayId pacesetterId,
         mAddingHDRLayerInfoListener = false;
     }
 
+    for (const auto& layerEvent : mLayerEvents) {
+        auto result =
+                stats::stats_write(stats::SURFACE_CONTROL_EVENT,
+                                   static_cast<int32_t>(layerEvent.uid),
+                                   static_cast<int64_t>(layerEvent.timeSinceLastEvent.count()),
+                                   static_cast<int32_t>(layerEvent.dataspace));
+        if (result < 0) {
+            ALOGW("Failed to report layer event with error: %d", result);
+        }
+    }
+
+    mLayerEvents.clear();
+
     if (haveNewListeners || mHdrLayerInfoChanged) {
         for (auto& [compositionDisplay, listener] : hdrInfoListeners) {
             HdrLayerInfoReporter::HdrLayerInfo info;