01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package org.apache.servicemix.executors;
18:
19: /**
20: * The Executor interface is a simple interface
21: * on top of a thread pool.
22: *
23: * @author <a href="mailto:gnodet [at] gmail.com">Guillaume Nodet</a>
24: */
25: public interface Executor {
26:
27: /**
28: * Execute a command.
29: *
30: * @param command the command to execute
31: */
32: void execute(Runnable command);
33:
34: /**
35: * Shutdown this executor.
36: * This must be called to kill all threads.
37: */
38: void shutdown();
39:
40: /**
41: * The capacity of the underlying queue (if any)
42: * @return
43: */
44: int capacity();
45:
46: /**
47: * The current size of the underlying queue (if any)
48: * @return
49: */
50: int size();
51:
52: }
|