Method checkpoint

app/src/main/java/eu/faircode/email/DB.java:3177–3206

(Context context)

    }

    public static void checkpoint(Context context) {
        // https://www.sqlite.org/pragma.html#pragma_wal_checkpoint
        DB db = getInstance(context);
        db.getQueryExecutor().execute(new Runnable() {
            @Override
            public void run() {
                try {
                    long start = new Date().getTime();
                    StringBuilder sb = new StringBuilder();
                    SupportSQLiteDatabase sdb = db.getOpenHelper().getWritableDatabase();
                    String mode = (true ? "RESTART" : "PASSIVE");
                    try (Cursor cursor = sdb.query("PRAGMA wal_checkpoint(" + mode + ");")) {
                        if (cursor.moveToNext()) {
                            for (int i = 0; i < cursor.getColumnCount(); i++) {
                                if (i > 0)
                                    sb.append(",");
                                sb.append(cursor.getInt(i));
                            }
                        }
                    }

                    long elapse = new Date().getTime() - start;
                    EntityLog.log(context, "PRAGMA wal_checkpoint(" + mode + ")=" + sb +
                            " elapse=" + elapse + " ms");
                } catch (Throwable ex) {
                    Log.e(ex);
                }
            }
        });
    }

    public static void shrinkMemory(Context context) {
        DB db = getInstance(context);