Merge "Fix proportional counting for out-of-order timestamps" into tm-dev am: 80907f720d
Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/18062857
Change-Id: Ic1a764b100407f4f1336b558189dc24a7c86378d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/libs/battery/MultiStateCounter.h b/libs/battery/MultiStateCounter.h
index 0caf005..ce9cd1c 100644
--- a/libs/battery/MultiStateCounter.h
+++ b/libs/battery/MultiStateCounter.h
@@ -139,22 +139,35 @@
return;
}
- if (!enabled) {
+ if (isEnabled) {
// Confirm the current state for the side-effect of updating the time-in-state
// counter for the current state.
setState(currentState, timestamp);
- }
+ isEnabled = false;
+ } else {
+ // If the counter is being enabled with an out-of-order timestamp, just push back
+ // the timestamp to avoid having the situation where
+ // timeInStateSinceUpdate > timeSinceUpdate
+ if (timestamp < lastUpdateTimestamp) {
+ timestamp = lastUpdateTimestamp;
+ }
- isEnabled = enabled;
-
- if (lastStateChangeTimestamp >= 0) {
- lastStateChangeTimestamp = timestamp;
+ if (lastStateChangeTimestamp >= 0) {
+ lastStateChangeTimestamp = timestamp;
+ }
+ isEnabled = true;
}
}
template <class T>
void MultiStateCounter<T>::setState(state_t state, time_t timestamp) {
- if (isEnabled && lastStateChangeTimestamp >= 0) {
+ if (isEnabled && lastStateChangeTimestamp >= 0 && lastUpdateTimestamp >= 0) {
+ // If the update arrived out-of-order, just push back the timestamp to
+ // avoid having the situation where timeInStateSinceUpdate > timeSinceUpdate
+ if (timestamp < lastUpdateTimestamp) {
+ timestamp = lastUpdateTimestamp;
+ }
+
if (timestamp >= lastStateChangeTimestamp) {
states[currentState].timeInStateSinceUpdate += timestamp - lastStateChangeTimestamp;
} else {
@@ -185,6 +198,12 @@
// If the counter is disabled, we ignore the update, except when the counter got disabled after
// the previous update, in which case we still need to pick up the residual delta.
if (isEnabled || lastUpdateTimestamp < lastStateChangeTimestamp) {
+ // If the update arrived out of order, just push back the timestamp to
+ // avoid having the situation where timeInStateSinceUpdate > timeSinceUpdate
+ if (timestamp < lastStateChangeTimestamp) {
+ timestamp = lastStateChangeTimestamp;
+ }
+
// Confirm the current state for the side-effect of updating the time-in-state
// counter for the current state.
setState(currentState, timestamp);