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BackgroundDexOptService: Check for low storage conditions.

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Abort the service (without an early reschedule) if we find that we're
running low on space. The low space check is performed (explicitly)
after every dexopt.

bug: 30865506
Change-Id: I8d31af8fe035701177f8b9a1eabb0b51f42027fe
This commit is contained in:
Narayan Kamath
2016-08-16 18:25:08 +01:00
parent 60ab8d072a
commit 8735f07a69
1 changed files with 40 additions and 0 deletions
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40
services/core/java/com/android/server/pm/BackgroundDexOptService.java
View File

@@ -28,10 +28,13 @@ import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.BatteryManager;
import android.os.Environment;
import android.os.ServiceManager;
import android.os.storage.StorageManager;
import android.util.ArraySet;
import android.util.Log;
import java.io.File;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.TimeUnit;
@@ -66,6 +69,8 @@ public class BackgroundDexOptService extends JobService {
*/
final AtomicBoolean mExitPostBootUpdate = new AtomicBoolean(false);
private final File dataDir = Environment.getDataDirectory();
public static void schedule(Context context) {
JobScheduler js = (JobScheduler) context.getSystemService(Context.JOB_SCHEDULER_SERVICE);
@@ -113,6 +118,16 @@ public class BackgroundDexOptService extends JobService {
return (100 * level / scale);
}
private long getLowStorageThreshold() {
@SuppressWarnings("deprecation")
final long lowThreshold = StorageManager.from(this).getStorageLowBytes(dataDir);
if (lowThreshold == 0) {
Log.e(TAG, "Invalid low storage threshold");
}
return lowThreshold;
}
private boolean runPostBootUpdate(final JobParameters jobParams,
final PackageManagerService pm, final ArraySet<String> pkgs) {
if (mExitPostBootUpdate.get()) {
@@ -124,6 +139,8 @@ public class BackgroundDexOptService extends JobService {
final int lowBatteryThreshold = getResources().getInteger(
com.android.internal.R.integer.config_lowBatteryWarningLevel);
final long lowThreshold = getLowStorageThreshold();
mAbortPostBootUpdate.set(false);
new Thread("BackgroundDexOptService_PostBootUpdate") {
@Override
@@ -141,6 +158,14 @@ public class BackgroundDexOptService extends JobService {
// Rather bail than completely drain the battery.
break;
}
long usableSpace = dataDir.getUsableSpace();
if (usableSpace < lowThreshold) {
// Rather bail than completely fill up the disk.
Log.w(TAG, "Aborting background dex opt job due to low storage: " +
usableSpace);
break;
}
if (DEBUG_DEXOPT) {
Log.i(TAG, "Updating package " + pkg);
}
@@ -171,6 +196,9 @@ public class BackgroundDexOptService extends JobService {
mExitPostBootUpdate.set(true);
mAbortIdleOptimization.set(false);
final long lowThreshold = getLowStorageThreshold();
new Thread("BackgroundDexOptService_IdleOptimization") {
@Override
public void run() {
@@ -183,6 +211,15 @@ public class BackgroundDexOptService extends JobService {
// Skip previously failing package
continue;
}
long usableSpace = dataDir.getUsableSpace();
if (usableSpace < lowThreshold) {
// Rather bail than completely fill up the disk.
Log.w(TAG, "Aborting background dex opt job due to low storage: " +
usableSpace);
break;
}
// Conservatively add package to the list of failing ones in case performDexOpt
// never returns.
synchronized (sFailedPackageNames) {
@@ -213,6 +250,9 @@ public class BackgroundDexOptService extends JobService {
Log.i(TAG, "onStartJob");
}
// NOTE: PackageManagerService.isStorageLow uses a different set of criteria from
// the checks above. This check is not "live" - the value is determined by a background
// restart with a period of ~1 minute.
PackageManagerService pm = (PackageManagerService)ServiceManager.getService("package");
if (pm.isStorageLow()) {
if (DEBUG_DEXOPT) {