LineageOS/android_packages_modules_Connectivity
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Merge "Fix incorrect interpolation of active bucket for partial requests."

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This commit is contained in:
Maciej Żenczykowski
2020-02-13 07:37:57 +00:00
committed by Gerrit Code Review
parent de345df19b c359926d90
commit 740fb7e003
1 changed files with 17 additions and 17 deletions
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34
core/java/android/net/NetworkStatsHistory.java
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@@ -548,32 +548,32 @@ public class NetworkStatsHistory implements Parcelable {
final int startIndex = getIndexAfter(end);
for (int i = startIndex; i >= 0; i--) {
final long curStart = bucketStart[i];
final long curEnd = curStart + bucketDuration;
long curEnd = curStart + bucketDuration;
// bucket is older than request; we're finished
if (curEnd <= start) break;
// bucket is newer than request; keep looking
if (curStart >= end) continue;
// include full value for active buckets, otherwise only fractional
final boolean activeBucket = curStart < now && curEnd > now;
final long overlap;
if (activeBucket) {
overlap = bucketDuration;
} else {
final long overlapEnd = curEnd < end ? curEnd : end;
final long overlapStart = curStart > start ? curStart : start;
overlap = overlapEnd - overlapStart;
}
// the active bucket is shorter then a normal completed bucket
if (curEnd > now) curEnd = now;
// usually this is simply bucketDuration
final long bucketSpan = curEnd - curStart;
// prevent division by zero
if (bucketSpan <= 0) continue;
final long overlapEnd = curEnd < end ? curEnd : end;
final long overlapStart = curStart > start ? curStart : start;
final long overlap = overlapEnd - overlapStart;
if (overlap <= 0) continue;
// integer math each time is faster than floating point
if (activeTime != null) entry.activeTime += activeTime[i] * overlap / bucketDuration;
if (rxBytes != null) entry.rxBytes += rxBytes[i] * overlap / bucketDuration;
if (rxPackets != null) entry.rxPackets += rxPackets[i] * overlap / bucketDuration;
if (txBytes != null) entry.txBytes += txBytes[i] * overlap / bucketDuration;
if (txPackets != null) entry.txPackets += txPackets[i] * overlap / bucketDuration;
if (operations != null) entry.operations += operations[i] * overlap / bucketDuration;
if (activeTime != null) entry.activeTime += activeTime[i] * overlap / bucketSpan;
if (rxBytes != null) entry.rxBytes += rxBytes[i] * overlap / bucketSpan;
if (rxPackets != null) entry.rxPackets += rxPackets[i] * overlap / bucketSpan;
if (txBytes != null) entry.txBytes += txBytes[i] * overlap / bucketSpan;
if (txPackets != null) entry.txPackets += txPackets[i] * overlap / bucketSpan;
if (operations != null) entry.operations += operations[i] * overlap / bucketSpan;
}
return entry;
}