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Schedule backup of a package on a background thread

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Scheduling involves writing to journal file. This part can be done on the
background thread in order to speed up the unlocking. Deferring writes to
journal file should be safe, because the system will reschedule backups in
case of a crash.

Bug: 29619732
Bug: 29645167
Change-Id: I0667ac2bf159e0f40b7a5066f41ea0841df98437
This commit is contained in:
Fyodor Kupolov
2016-06-30 14:20:02 -07:00
parent 8d90128bc9
commit 4e8ce9ec4e
1 changed files with 16 additions and 3 deletions
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19
services/backup/java/com/android/server/backup/BackupManagerService.java
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@@ -234,6 +234,7 @@ public class BackupManagerService {
private static final int MSG_WIDGET_BROADCAST = 13;
private static final int MSG_RUN_FULL_TRANSPORT_BACKUP = 14;
private static final int MSG_REQUEST_BACKUP = 15;
private static final int MSG_SCHEDULE_BACKUP_PACKAGE = 16;
// backup task state machine tick
static final int MSG_BACKUP_RESTORE_STEP = 20;
@@ -1037,6 +1038,16 @@ public class BackupManagerService {
sendMessage(pbtMessage);
break;
}
case MSG_SCHEDULE_BACKUP_PACKAGE:
{
String pkgName = (String)msg.obj;
if (MORE_DEBUG) {
Slog.d(TAG, "MSG_SCHEDULE_BACKUP_PACKAGE " + pkgName);
}
dataChangedImpl(pkgName);
break;
}
}
}
}
@@ -1216,7 +1227,7 @@ public class BackupManagerService {
// Now that we know about valid backup participants, parse any
// leftover journal files into the pending backup set
parseLeftoverJournals();
mBackupHandler.post(() -> parseLeftoverJournals());
// Power management
mWakelock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "*backup*");
@@ -2161,7 +2172,7 @@ public class BackupManagerService {
int uid = pkg.applicationInfo.uid;
HashSet<String> set = mBackupParticipants.get(uid);
if (set == null) {
set = new HashSet<String>();
set = new HashSet<>();
mBackupParticipants.put(uid, set);
}
set.add(pkg.packageName);
@@ -2169,7 +2180,9 @@ public class BackupManagerService {
// Schedule a backup for it on general principles
if (MORE_DEBUG) Slog.i(TAG, "Scheduling backup for new app " + pkg.packageName);
dataChangedImpl(pkg.packageName);
Message msg = mBackupHandler
.obtainMessage(MSG_SCHEDULE_BACKUP_PACKAGE, pkg.packageName);
mBackupHandler.sendMessage(msg);
}
}
}