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This will stop instances of the following from occuring in the logs on SMS migration: W/SQLiteCompiledSql: Releasing statement in a finalizer. Please ensure that you explicitly call close() on your cursor: INSERT INTO sms (address, person, date_sent, date, protocol, read, status, type, reply_path_present, net.sqlcipher.database.DatabaseObjectNotClosedException: Application did not close the cursor or database object that was opened here at net.sqlcipher.database.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:62) at net.sqlcipher.database.SQLiteProgram.<init>(SQLiteProgram.java:109) at net.sqlcipher.database.SQLiteStatement.<init>(SQLiteStatement.java:39) at net.sqlcipher.database.SQLiteDatabase.compileStatement(SQLiteDatabase.java:1647) at org.thoughtcrime.securesms.database.SmsDatabase.createInsertStatement(SmsDatabase.java:767) at org.thoughtcrime.securesms.database.SmsMigrator.migrateConversation(SmsMigrator.java:166) at org.thoughtcrime.securesms.database.SmsMigrator.migrateDatabase(SmsMigrator.java:210) at org.thoughtcrime.securesms.service.ApplicationMigrationService$ImportRunnable.run(ApplicationMigrationService.java:159) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) at java.lang.Thread.run(Thread.java:764) We aren't closing Statement objects before the finalizer on those objects runs. When the GC runs, we'll get warnings like the above which alert us to the fact that these objects are being automatically closed for us in the finalizer, but that this is suboptimal behavior. If we leave too many Statement (or Cursor) objects to be closed in their finalizers, when the GC runs, it'll take longer than 10 seconds to close them all and Android will kill the app. This 10 second limit is hardcoded and we can only try to avoid it. A crash will look like: java.util.concurrent.TimeoutException: net.sqlcipher.database.SQLiteCompiledSql.finalize() timed out after 10 seconds at java.lang.Object.wait(Native Method) at java.lang.Thread.parkFor$(Thread.java:1220) at sun.misc.Unsafe.park(Unsafe.java:299) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158) at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:810) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:844) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1173) at java.util.concurrent.locks.ReentrantLock$FairSync.lock(ReentrantLock.java:196) at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:257) at net.sqlcipher.database.SQLiteDatabase.lock(SQLiteDatabase.java:553) at net.sqlcipher.database.SQLiteCompiledSql.releaseSqlStatement(SQLiteCompiledSql.java:106) at net.sqlcipher.database.SQLiteCompiledSql.finalize(SQLiteCompiledSql.java:152) at java.lang.Daemons$FinalizerDaemon.doFinalize(Daemons.java:202) at java.lang.Daemons$FinalizerDaemon.run(Daemons.java:185) at java.lang.Thread.run(Thread.java:818) I was able to replicate the above crash consistently on a Samsung Galaxy S7 edge when importing well over 100k SMS messages. But as soon as I attached a debugger the crash did not persist. I assume this is because of some VM-level interactions between the two and did not investigate further after fixing it. I do not have access to the stack trace for issue #7953 but this could potentially resolve it. The crash is identical to that in #7477 but this patch is for SMS migration not restoring from a backup. I was not able to replicate the crash on restoring a >100k message backup. |
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