2 * Copyright (C) 2014, United States Government, as represented by the
3 * Administrator of the National Aeronautics and Space Administration.
6 * The Java Pathfinder core (jpf-core) platform is licensed under the
7 * Apache License, Version 2.0 (the "License"); you may not use this file except
8 * in compliance with the License. You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0.
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
19 package gov.nasa.jpf.vm;
21 import gov.nasa.jpf.SystemAttribute;
24 * a SystemAttribute to mark global scheduling points.
26 * While we can identify process context switches through the ThreadInfo/AooCtx
27 * of respective CG instances, we could not identify process global scheduling
28 * choices that include threads of the current process
30 public class GlobalSchedulingPoint implements SystemAttribute {
32 static final GlobalSchedulingPoint singleton = new GlobalSchedulingPoint();
34 public static void setGlobal (ChoiceGenerator<?> cg){
35 cg.addAttr(singleton);
38 public static boolean isGlobal (ChoiceGenerator<?> cg){
39 return (cg != null) && cg.hasAttr(GlobalSchedulingPoint.class);