import static com.android.server.pm.PackageManagerService.DEBUG_DEXOPT;
import static com.android.server.pm.PackageManagerService.TAG;
+import android.annotation.NonNull;
import android.app.AppGlobals;
import android.content.Intent;
import android.content.pm.PackageParser;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
-import java.util.Comparator;
-import java.util.Date;
-import java.util.HashSet;
-import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
-import java.util.Set;
+import java.util.function.Predicate;
/**
* Class containing helper methods for the PackageManagerService.
return pkgNames;
}
- private static void filterRecentlyUsedApps(Collection<PackageParser.Package> pkgs,
- long estimatedPreviousSystemUseTime,
- long dexOptLRUThresholdInMills) {
- // Filter out packages that aren't recently used.
- int total = pkgs.size();
- int skipped = 0;
- for (Iterator<PackageParser.Package> i = pkgs.iterator(); i.hasNext();) {
- PackageParser.Package pkg = i.next();
- long then = pkg.getLatestForegroundPackageUseTimeInMills();
- if (then < estimatedPreviousSystemUseTime - dexOptLRUThresholdInMills) {
- if (DEBUG_DEXOPT) {
- Log.i(TAG, "Skipping dexopt of " + pkg.packageName +
- " last used in foreground: " +
- ((then == 0) ? "never" : new Date(then)));
- }
- i.remove();
- skipped++;
- } else {
- if (DEBUG_DEXOPT) {
- Log.i(TAG, "Will dexopt " + pkg.packageName +
- " last used in foreground: " +
- ((then == 0) ? "never" : new Date(then)));
- }
+ // Sort a list of apps by their last usage, most recently used apps first. The order of
+ // packages without usage data is undefined (but they will be sorted after the packages
+ // that do have usage data).
+ public static void sortPackagesByUsageDate(List<PackageParser.Package> pkgs,
+ PackageManagerService packageManagerService) {
+ if (!packageManagerService.isHistoricalPackageUsageAvailable()) {
+ return;
+ }
+
+ Collections.sort(pkgs, (pkg1, pkg2) ->
+ Long.compare(pkg2.getLatestForegroundPackageUseTimeInMills(),
+ pkg1.getLatestForegroundPackageUseTimeInMills()));
+ }
+
+ // Apply the given {@code filter} to all packages in {@code packages}. If tested positive, the
+ // package will be removed from {@code packages} and added to {@code result} with its
+ // dependencies. If usage data is available, the positive packages will be sorted by usage
+ // data (with {@code sortTemp} as temporary storage).
+ private static void applyPackageFilter(Predicate<PackageParser.Package> filter,
+ Collection<PackageParser.Package> result,
+ Collection<PackageParser.Package> packages,
+ @NonNull List<PackageParser.Package> sortTemp,
+ PackageManagerService packageManagerService) {
+ for (PackageParser.Package pkg : packages) {
+ if (filter.test(pkg)) {
+ sortTemp.add(pkg);
}
}
- if (DEBUG_DEXOPT) {
- Log.i(TAG, "Skipped dexopt " + skipped + " of " + total);
+
+ sortPackagesByUsageDate(sortTemp, packageManagerService);
+ packages.removeAll(sortTemp);
+
+ for (PackageParser.Package pkg : sortTemp) {
+ result.add(pkg);
+
+ Collection<PackageParser.Package> deps =
+ packageManagerService.findSharedNonSystemLibraries(pkg);
+ if (!deps.isEmpty()) {
+ deps.removeAll(result);
+ result.addAll(deps);
+ packages.removeAll(deps);
+ }
}
+
+ sortTemp.clear();
}
// Sort apps by importance for dexopt ordering. Important apps are given
PackageManagerService packageManagerService) {
ArrayList<PackageParser.Package> remainingPkgs = new ArrayList<>(packages);
LinkedList<PackageParser.Package> result = new LinkedList<>();
+ ArrayList<PackageParser.Package> sortTemp = new ArrayList<>(remainingPkgs.size());
// Give priority to core apps.
- for (PackageParser.Package pkg : remainingPkgs) {
- if (pkg.coreApp) {
- if (DEBUG_DEXOPT) {
- Log.i(TAG, "Adding core app " + result.size() + ": " + pkg.packageName);
- }
- result.add(pkg);
- }
- }
- remainingPkgs.removeAll(result);
+ applyPackageFilter((pkg) -> pkg.coreApp, result, remainingPkgs, sortTemp,
+ packageManagerService);
// Give priority to system apps that listen for pre boot complete.
Intent intent = new Intent(Intent.ACTION_PRE_BOOT_COMPLETED);
- ArraySet<String> pkgNames = getPackageNamesForIntent(intent, UserHandle.USER_SYSTEM);
- for (PackageParser.Package pkg : remainingPkgs) {
- if (pkgNames.contains(pkg.packageName)) {
- if (DEBUG_DEXOPT) {
- Log.i(TAG, "Adding pre boot system app " + result.size() + ": " +
- pkg.packageName);
- }
- result.add(pkg);
- }
- }
- remainingPkgs.removeAll(result);
+ final ArraySet<String> pkgNames = getPackageNamesForIntent(intent, UserHandle.USER_SYSTEM);
+ applyPackageFilter((pkg) -> pkgNames.contains(pkg.packageName), result, remainingPkgs,
+ sortTemp, packageManagerService);
// Give priority to apps used by other apps.
- for (PackageParser.Package pkg : remainingPkgs) {
- if (PackageDexOptimizer.isUsedByOtherApps(pkg)) {
- if (DEBUG_DEXOPT) {
- Log.i(TAG, "Adding app used by other apps " + result.size() + ": " +
- pkg.packageName);
- }
- result.add(pkg);
- }
- }
- remainingPkgs.removeAll(result);
+ applyPackageFilter((pkg) -> PackageDexOptimizer.isUsedByOtherApps(pkg), result,
+ remainingPkgs, sortTemp, packageManagerService);
// Filter out packages that aren't recently used, add all remaining apps.
// TODO: add a property to control this?
+ Predicate<PackageParser.Package> remainingPredicate;
if (!remainingPkgs.isEmpty() && packageManagerService.isHistoricalPackageUsageAvailable()) {
if (DEBUG_DEXOPT) {
Log.i(TAG, "Looking at historical package use");
lastUsed.getLatestForegroundPackageUseTimeInMills();
// Be defensive if for some reason package usage has bogus data.
if (estimatedPreviousSystemUseTime != 0) {
- filterRecentlyUsedApps(remainingPkgs, estimatedPreviousSystemUseTime,
- SEVEN_DAYS_IN_MILLISECONDS);
+ final long cutoffTime = estimatedPreviousSystemUseTime - SEVEN_DAYS_IN_MILLISECONDS;
+ remainingPredicate =
+ (pkg) -> pkg.getLatestForegroundPackageUseTimeInMills() >= cutoffTime;
+ } else {
+ // No meaningful historical info. Take all.
+ remainingPredicate = (pkg) -> true;
}
+ sortPackagesByUsageDate(remainingPkgs, packageManagerService);
+ } else {
+ // No historical info. Take all.
+ remainingPredicate = (pkg) -> true;
}
- result.addAll(remainingPkgs);
-
- // Now go ahead and also add the libraries required for these packages.
- // TODO: Think about interleaving things.
- Set<PackageParser.Package> dependencies = new HashSet<>();
- for (PackageParser.Package p : result) {
- dependencies.addAll(packageManagerService.findSharedNonSystemLibraries(p));
- }
- if (!dependencies.isEmpty()) {
- // We might have packages already in `result` that are dependencies
- // of other packages. Make sure we don't add those to the list twice.
- dependencies.removeAll(result);
- }
- result.addAll(dependencies);
+ applyPackageFilter(remainingPredicate, result, remainingPkgs, sortTemp,
+ packageManagerService);
if (DEBUG_DEXOPT) {
StringBuilder sb = new StringBuilder();
sb.append(pkg.packageName);
}
Log.i(TAG, "Packages to be dexopted: " + sb.toString());
+
+ sb.setLength(0);
+ for (PackageParser.Package pkg : remainingPkgs) {
+ if (sb.length() > 0) {
+ sb.append(", ");
+ }
+ sb.append(pkg.packageName);
+ }
+ Log.i(TAG, "Packages skipped from dexopt: " + sb.toString());
}
return result;