Mercurial > hg > Members > kono > jpf-core

annotate src/peers/gov/nasa/jpf/vm/JPF_java_util_concurrent_atomic_AtomicReferenceFieldUpdater.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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12 * Unless required by applicable law or agreed to in writing, software
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18
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19 package gov.nasa.jpf.vm;
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20
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21 import gov.nasa.jpf.annotation.MJI;
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22
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23
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24 /**
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25 * a full peer for the AtomicReferenceFieldUpdater
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26 */
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27 public class JPF_java_util_concurrent_atomic_AtomicReferenceFieldUpdater extends AtomicFieldUpdater {
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28
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29 @MJI
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30 public void $init__Ljava_lang_Class_2Ljava_lang_Class_2Ljava_lang_String_2__V (MJIEnv env, int objRef,
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31 int tClsObjRef, int fClsObjRef, int fNameRef) {
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32
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33 // direct Object subclass, so we don't have to call a super ctor
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34
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35 ClassInfo ci = env.getReferredClassInfo(tClsObjRef);
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36 String fname = env.getStringObject(fNameRef);
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37 FieldInfo fi = ci.getInstanceField(fname);
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38
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39 ClassInfo fci = fi.getTypeClassInfo();
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40
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41 ClassInfo fciCheck = env.getReferredClassInfo( fClsObjRef);
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42 if (!fci.isInstanceOf(fciCheck)) {
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43 // that's also just an approximation, but we need to check
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44 env.throwException("java.lang.RuntimeException", "wrong field type");
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45 }
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46
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47 int fidx = fi.getFieldIndex();
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48 env.setIntField(objRef, "fieldId", fidx);
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49 }
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50
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51 @MJI
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52 public boolean compareAndSet__Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2__Z
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53 (MJIEnv env, int objRef, int tRef, int fExpect, int fUpdate){
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54
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55 if (tRef == MJIEnv.NULL){
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56 env.throwException("java.lang.NullPointerException", "AtomicFieldUpdater called on null object");
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57 return false;
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58 }
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59
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60 ThreadInfo ti = env.getThreadInfo();
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61 ElementInfo ei = ti.getModifiableElementInfo(tRef);
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62 FieldInfo fi = getFieldInfo( ti.getElementInfo(objRef), ei);
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63
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64 if (reschedulesAccess(ti, ei, fi)){
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65 env.repeatInvocation();
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66 return false;
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67 }
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68
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69 int v = ei.getReferenceField(fi);
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70 if (v == fExpect) {
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71 ei.setReferenceField(fi, fUpdate);
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72 return true;
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73 } else {
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74 return false;
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75 }
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76 }
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77
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78 @MJI
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79 public boolean weakCompareAndSet__Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2__Z
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80 (MJIEnv env, int objRef, int tRef, int fExpect, int fUpdate){
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81 return(compareAndSet__Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2__Z(env, objRef, tRef, fExpect, fUpdate));
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82 }
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83
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84 @MJI
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85 public void set__Ljava_lang_Object_2Ljava_lang_Object_2__V (MJIEnv env, int objRef, int tRef, int fNewValue){
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86
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87 if (tRef == MJIEnv.NULL){
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88 env.throwException("java.lang.NullPointerException", "AtomicFieldUpdater called on null object");
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89 return;
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90 }
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91
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92 ThreadInfo ti = env.getThreadInfo();
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93 ElementInfo ei = ti.getModifiableElementInfo(tRef);
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94 FieldInfo fi = getFieldInfo( ti.getElementInfo(objRef), ei);
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95
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96 if (reschedulesAccess(ti, ei, fi)){
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97 env.repeatInvocation();
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98 return;
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99 }
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100
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101 ei.setReferenceField(fi, fNewValue);
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102 }
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103
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104 @MJI
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105 public void lazySet__Ljava_lang_Object_2Ljava_lang_Object_2__V (MJIEnv env, int objRef, int tRef, int fNewValue){
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106 set__Ljava_lang_Object_2Ljava_lang_Object_2__V(env, objRef, tRef, fNewValue);
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107 }
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108
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109 @MJI
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110 public int get__Ljava_lang_Object_2__Ljava_lang_Object_2 (MJIEnv env, int objRef, int tRef){
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111 if (tRef == MJIEnv.NULL){
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112 env.throwException("java.lang.NullPointerException", "AtomicFieldUpdater called on null object");
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113 return MJIEnv.NULL;
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114 }
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115
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116 ThreadInfo ti = env.getThreadInfo();
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117 ElementInfo ei = ti.getElementInfo(tRef);
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118 FieldInfo fi = getFieldInfo( ti.getElementInfo(objRef), ei);
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119
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120 if (reschedulesAccess(ti, ei, fi)){
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121 env.repeatInvocation();
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122 return MJIEnv.NULL;
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123 }
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124
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125 return ei.getReferenceField(fi);
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126 }
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127
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128 @MJI
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129 public int getAndSet__Ljava_lang_Object_2Ljava_lang_Object_2__Ljava_lang_Object_2 (MJIEnv env, int objRef, int tRef, int fNewValue){
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130 if (tRef == MJIEnv.NULL){
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131 env.throwException("java.lang.NullPointerException", "AtomicFieldUpdater called on null object");
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132 return MJIEnv.NULL;
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133 }
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134
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135 ThreadInfo ti = env.getThreadInfo();
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136 ElementInfo ei = ti.getElementInfo(tRef);
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137 FieldInfo fi = getFieldInfo( ti.getElementInfo(objRef), ei);
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138
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139 if (reschedulesAccess(ti, ei, fi)){
61d41facf527 initial v8 import (history reset)
Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
parents:
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140 env.repeatInvocation();
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
parents:
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141 return MJIEnv.NULL;
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
parents:
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142 }
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
parents:
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143
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
parents:
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144 int result = ei.getReferenceField(fi);
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
parents:
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145 ei.setReferenceField(fi, fNewValue);
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
parents:
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146
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
parents:
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147 return result;
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
parents:
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148 }
61d41facf527 initial v8 import (history reset)
Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
parents:
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149 }