1 /*
   2  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package jdk.jshell.execution;
  26 
  27 /**
  28  * Log events in the ExecutionControl implementation.
  29  */
  30 public interface ECLogger {
  31 
  32     /**
  33      * Log debugging information. Arguments as for {@code printf}.
  34      *
  35      * @param format a format string as described in Format string syntax
  36      * @param args arguments referenced by the format specifiers in the format
  37      * string.
  38      */
  39     void debug(String format, Object... args);
  40 
  41     /**
  42      * Log a serious unexpected internal exception.
  43      *
  44      * @param ex the exception
  45      * @param where a description of the context of the exception
  46      */
  47     void debug(Throwable ex, String where);
  48 
  49 }