Mercurial > hg > Members > kono > jpf-core
view src/peers/gov/nasa/jpf/vm/JPF_java_util_concurrent_atomic_AtomicReferenceFieldUpdater.java @ 0:61d41facf527
initial v8 import (history reset)
author | Peter Mehlitz <Peter.C.Mehlitz@nasa.gov> |
---|---|
date | Fri, 23 Jan 2015 10:14:01 -0800 |
parents | |
children |
line wrap: on
line source
/* * Copyright (C) 2014, United States Government, as represented by the * Administrator of the National Aeronautics and Space Administration. * All rights reserved. * * The Java Pathfinder core (jpf-core) platform is licensed under the * Apache License, Version 2.0 (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0. * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package gov.nasa.jpf.vm; import gov.nasa.jpf.annotation.MJI; /** * a full peer for the AtomicReferenceFieldUpdater */ public class JPF_java_util_concurrent_atomic_AtomicReferenceFieldUpdater extends AtomicFieldUpdater { @MJI public void $init__Ljava_lang_Class_2Ljava_lang_Class_2Ljava_lang_String_2__V (MJIEnv env, int objRef, int tClsObjRef, int fClsObjRef, int fNameRef) { // direct Object subclass, so we don't have to call a super ctor ClassInfo ci = env.getReferredClassInfo(tClsObjRef); String fname = env.getStringObject(fNameRef); FieldInfo fi = ci.getInstanceField(fname); ClassInfo fci = fi.getTypeClassInfo(); ClassInfo fciCheck = env.getReferredClassInfo( fClsObjRef); if (!fci.isInstanceOf(fciCheck)) { // that's also just an approximation, but we need to check env.throwException("java.lang.RuntimeException", "wrong field type"); } int fidx = fi.getFieldIndex(); env.setIntField(objRef, "fieldId", fidx); } @MJI public boolean compareAndSet__Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2__Z (MJIEnv env, int objRef, int tRef, int fExpect, int fUpdate){ if (tRef == MJIEnv.NULL){ env.throwException("java.lang.NullPointerException", "AtomicFieldUpdater called on null object"); return false; } ThreadInfo ti = env.getThreadInfo(); ElementInfo ei = ti.getModifiableElementInfo(tRef); FieldInfo fi = getFieldInfo( ti.getElementInfo(objRef), ei); if (reschedulesAccess(ti, ei, fi)){ env.repeatInvocation(); return false; } int v = ei.getReferenceField(fi); if (v == fExpect) { ei.setReferenceField(fi, fUpdate); return true; } else { return false; } } @MJI public boolean weakCompareAndSet__Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2__Z (MJIEnv env, int objRef, int tRef, int fExpect, int fUpdate){ return(compareAndSet__Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2__Z(env, objRef, tRef, fExpect, fUpdate)); } @MJI public void set__Ljava_lang_Object_2Ljava_lang_Object_2__V (MJIEnv env, int objRef, int tRef, int fNewValue){ if (tRef == MJIEnv.NULL){ env.throwException("java.lang.NullPointerException", "AtomicFieldUpdater called on null object"); return; } ThreadInfo ti = env.getThreadInfo(); ElementInfo ei = ti.getModifiableElementInfo(tRef); FieldInfo fi = getFieldInfo( ti.getElementInfo(objRef), ei); if (reschedulesAccess(ti, ei, fi)){ env.repeatInvocation(); return; } ei.setReferenceField(fi, fNewValue); } @MJI public void lazySet__Ljava_lang_Object_2Ljava_lang_Object_2__V (MJIEnv env, int objRef, int tRef, int fNewValue){ set__Ljava_lang_Object_2Ljava_lang_Object_2__V(env, objRef, tRef, fNewValue); } @MJI public int get__Ljava_lang_Object_2__Ljava_lang_Object_2 (MJIEnv env, int objRef, int tRef){ if (tRef == MJIEnv.NULL){ env.throwException("java.lang.NullPointerException", "AtomicFieldUpdater called on null object"); return MJIEnv.NULL; } ThreadInfo ti = env.getThreadInfo(); ElementInfo ei = ti.getElementInfo(tRef); FieldInfo fi = getFieldInfo( ti.getElementInfo(objRef), ei); if (reschedulesAccess(ti, ei, fi)){ env.repeatInvocation(); return MJIEnv.NULL; } return ei.getReferenceField(fi); } @MJI public int getAndSet__Ljava_lang_Object_2Ljava_lang_Object_2__Ljava_lang_Object_2 (MJIEnv env, int objRef, int tRef, int fNewValue){ if (tRef == MJIEnv.NULL){ env.throwException("java.lang.NullPointerException", "AtomicFieldUpdater called on null object"); return MJIEnv.NULL; } ThreadInfo ti = env.getThreadInfo(); ElementInfo ei = ti.getElementInfo(tRef); FieldInfo fi = getFieldInfo( ti.getElementInfo(objRef), ei); if (reschedulesAccess(ti, ei, fi)){ env.repeatInvocation(); return MJIEnv.NULL; } int result = ei.getReferenceField(fi); ei.setReferenceField(fi, fNewValue); return result; } }