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Merge "Improve UID ordering for connectivity callbacks." into sc-dev

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This commit is contained in:
Kweku Adams
2021-04-08 21:23:07 +00:00
committed by Android (Google) Code Review
parent 44763d1b5b eb3be08ea3
commit 6fbec6e775
1 changed files with 46 additions and 19 deletions
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65
apex/jobscheduler/service/java/com/android/server/job/controllers/ConnectivityController.java
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@@ -121,54 +121,81 @@ public final class ConnectivityController extends RestrictingController implemen
private final SparseArray<UidDefaultNetworkCallback> mCurrentDefaultNetworkCallbacks =
new SparseArray<>();
private final Comparator<UidStats> mUidStatsComparator = new Comparator<UidStats>() {
private int prioritizeExistence(int v1, int v2) {
if (v1 > 0 && v2 > 0) {
private int prioritizeExistenceOver(int threshold, int v1, int v2) {
// Check if they're both on the same side of the threshold.
if ((v1 > threshold && v2 > threshold) || (v1 <= threshold && v2 <= threshold)) {
return 0;
}
return v2 - v1;
// They're on opposite sides of the threshold.
if (v1 > threshold) {
return -1;
}
return 1;
}
@Override
public int compare(UidStats us1, UidStats us2) {
// TODO: build a better prioritization scheme
// Some things to use:
// * Proc state
// * IMPORTANT_WHILE_IN_FOREGROUND bit
final int runningPriority = prioritizeExistence(us1.numRunning, us2.numRunning);
// Prioritize a UID ahead of another based on:
// 1. Already running connectivity jobs (so we don't drop the listener)
// 2. Waiting connectivity jobs would be ready with connectivity
// 3. An existing network satisfies a waiting connectivity job's requirements
// 4. TOP proc state
// 5. Existence of treat-as-EJ EJs (not just requested EJs)
// 6. FGS proc state
// 7. EJ enqueue time
// 8. Any other important job priorities/proc states
// 9. Enqueue time
// TODO: maybe consider number of jobs
// TODO: consider IMPORTANT_WHILE_FOREGROUND bit
final int runningPriority = prioritizeExistenceOver(0, us1.numRunning, us2.numRunning);
if (runningPriority != 0) {
return runningPriority;
}
// Prioritize any UIDs that have jobs that would be ready ahead of UIDs that don't.
final int readyWithConnPriority =
prioritizeExistence(us1.numReadyWithConnectivity, us2.numReadyWithConnectivity);
final int readyWithConnPriority = prioritizeExistenceOver(0,
us1.numReadyWithConnectivity, us2.numReadyWithConnectivity);
if (readyWithConnPriority != 0) {
return readyWithConnPriority;
}
// They both have jobs that would be ready. Prioritize the UIDs whose requested
// network is available ahead of UIDs that don't have their requested network available.
final int reqAvailPriority = prioritizeExistence(
final int reqAvailPriority = prioritizeExistenceOver(0,
us1.numRequestedNetworkAvailable, us2.numRequestedNetworkAvailable);
if (reqAvailPriority != 0) {
return reqAvailPriority;
}
// They both have jobs with available networks. Prioritize based on:
// 1. (eventually) proc state
// 2. Existence of runnable EJs (not just requested)
// 3. Enqueue time
// TODO: maybe consider number of jobs
final int ejPriority = prioritizeExistence(us1.numEJs, us2.numEJs);
// Prioritize the top app. If neither are top apps, then use a later prioritization
// check.
final int topPriority = prioritizeExistenceOver(JobInfo.PRIORITY_TOP_APP - 1,
us1.basePriority, us2.basePriority);
if (topPriority != 0) {
return topPriority;
}
// They're either both TOP or both not TOP. Prioritize the app that has runnable EJs
// pending.
final int ejPriority = prioritizeExistenceOver(0, us1.numEJs, us2.numEJs);
if (ejPriority != 0) {
return ejPriority;
}
// They both have EJs. Order them by EJ enqueue time to help provide low EJ latency.
// They both have runnable EJs.
// Prioritize an FGS+ app. If neither are FGS+ apps, then use a later prioritization
// check.
final int fgsPriority = prioritizeExistenceOver(JobInfo.PRIORITY_FOREGROUND_SERVICE - 1,
us1.basePriority, us2.basePriority);
if (fgsPriority != 0) {
return fgsPriority;
}
// Order them by EJ enqueue time to help provide low EJ latency.
if (us1.earliestEJEnqueueTime < us2.earliestEJEnqueueTime) {
return -1;
} else if (us1.earliestEJEnqueueTime > us2.earliestEJEnqueueTime) {
return 1;
}
// Order by any latent important proc states.
if (us1.basePriority != us2.basePriority) {
return us2.basePriority - us1.basePriority;
}
// Order by enqueue time.
if (us1.earliestEnqueueTime < us2.earliestEnqueueTime) {
return -1;
}
@@ -480,7 +507,7 @@ public final class ConnectivityController extends RestrictingController implemen
UidStats uidStats = mUidStats.get(uid);
if (uidStats != null && uidStats.basePriority != newPriority) {
uidStats.basePriority = newPriority;
maybeAdjustRegisteredCallbacksLocked();
postAdjustCallbacks();
}
}