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/SchedulerUtils.h b/services/surfaceflinger/Scheduler/SchedulerUtils.h
index d301b99..e7e73a3 100644
--- a/services/surfaceflinger/Scheduler/SchedulerUtils.h
+++ b/services/surfaceflinger/Scheduler/SchedulerUtils.h
@@ -16,6 +16,7 @@
#pragma once
+#include <utils/Timers.h>
#include <cinttypes>
#include <numeric>
#include <unordered_map>
@@ -70,6 +71,13 @@
return static_cast<int>(std::max_element(counts.begin(), counts.end(), compareCounts)->first);
}
+template <class T, size_t N>
+constexpr size_t arrayLen(T (&)[N]) {
+ return N;
+}
+
+static constexpr size_t max64print = std::numeric_limits<nsecs_t>::digits10 + 1;
+
} // namespace android::scheduler
namespace std {