SF: add trace points for dispatcher system
Adds initial tracing points for the dispatcher and predictor vsync
signal dispatch system, along with some helper classes to turn traces
on and off based on system properties.
Verbose tracing can be turned on with 'setprop debug.sf.vsp_trace 1'
Test: boot with tracepoints on, see intended traces
Bug: 144927823
Change-Id: Ib6764404b77881887f338a41a25daa1d7068dc1f
diff --git a/services/surfaceflinger/Scheduler/VSyncPredictor.h b/services/surfaceflinger/Scheduler/VSyncPredictor.h
index 4210b3c..4467c71 100644
--- a/services/surfaceflinger/Scheduler/VSyncPredictor.h
+++ b/services/surfaceflinger/Scheduler/VSyncPredictor.h
@@ -20,6 +20,7 @@
#include <mutex>
#include <unordered_map>
#include <vector>
+#include "SchedulerUtils.h"
#include "VSyncTracker.h"
namespace android::scheduler {
@@ -62,6 +63,9 @@
VSyncPredictor(VSyncPredictor const&) = delete;
VSyncPredictor& operator=(VSyncPredictor const&) = delete;
+ inline void traceInt64If(const char* name, int64_t value) const;
+ bool const mTraceOn;
+
size_t const kHistorySize;
size_t const kMinimumSamplesForPrediction;
size_t const kOutlierTolerancePercent;