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root/jsr166/jsr166/src/jsr166y/ForkJoinTask.java
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Comparing jsr166/src/jsr166y/ForkJoinTask.java (file contents):
Revision 1.21 by jsr166, Sun Jul 26 06:26:37 2009 UTC vs.
Revision 1.22 by jsr166, Sun Jul 26 17:33:37 2009 UTC

# Line 1111 | Line 1111 | public abstract class ForkJoinTask<V> im
1111              setDoneExceptionally((Throwable) ex);
1112      }
1113  
1114 <    // Unsafe mechanics for jsr166y 3rd party package.
1114 >    // Unsafe mechanics
1115 >
1116 >    private static final sun.misc.Unsafe UNSAFE = getUnsafe();
1117 >    private static final long statusOffset =
1118 >        objectFieldOffset("status", ForkJoinTask.class);
1119 >
1120 >    private static long objectFieldOffset(String field, Class<?> klazz) {
1121 >        try {
1122 >            return UNSAFE.objectFieldOffset(klazz.getDeclaredField(field));
1123 >        } catch (NoSuchFieldException e) {
1124 >            // Convert Exception to corresponding Error
1125 >            NoSuchFieldError error = new NoSuchFieldError(field);
1126 >            error.initCause(e);
1127 >            throw error;
1128 >        }
1129 >    }
1130 >
1131 >    /**
1132 >     * Returns a sun.misc.Unsafe.  Suitable for use in a 3rd party package.
1133 >     * Replace with a simple call to Unsafe.getUnsafe when integrating
1134 >     * into a jdk.
1135 >     *
1136 >     * @return a sun.misc.Unsafe
1137 >     */
1138      private static sun.misc.Unsafe getUnsafe() {
1139          try {
1140              return sun.misc.Unsafe.getUnsafe();
1141          } catch (SecurityException se) {
1142              try {
1143                  return java.security.AccessController.doPrivileged
1144 <                    (new java.security.PrivilegedExceptionAction<sun.misc.Unsafe>() {
1144 >                    (new java.security
1145 >                     .PrivilegedExceptionAction<sun.misc.Unsafe>() {
1146                          public sun.misc.Unsafe run() throws Exception {
1147 <                            return getUnsafeByReflection();
1147 >                            java.lang.reflect.Field f = sun.misc
1148 >                                .Unsafe.class.getDeclaredField("theUnsafe");
1149 >                            f.setAccessible(true);
1150 >                            return (sun.misc.Unsafe) f.get(null);
1151                          }});
1152              } catch (java.security.PrivilegedActionException e) {
1153                  throw new RuntimeException("Could not initialize intrinsics",
# Line 1128 | Line 1155 | public abstract class ForkJoinTask<V> im
1155              }
1156          }
1157      }
1131 –
1132 –    private static sun.misc.Unsafe getUnsafeByReflection()
1133 –            throws NoSuchFieldException, IllegalAccessException {
1134 –        java.lang.reflect.Field f =
1135 –            sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
1136 –        f.setAccessible(true);
1137 –        return (sun.misc.Unsafe) f.get(null);
1138 –    }
1139 –
1140 –    private static long fieldOffset(String fieldName, Class<?> klazz) {
1141 –        try {
1142 –            return UNSAFE.objectFieldOffset(klazz.getDeclaredField(fieldName));
1143 –        } catch (NoSuchFieldException e) {
1144 –            // Convert Exception to Error
1145 –            NoSuchFieldError error = new NoSuchFieldError(fieldName);
1146 –            error.initCause(e);
1147 –            throw error;
1148 –        }
1149 –    }
1150 –
1151 –    private static final sun.misc.Unsafe UNSAFE = getUnsafe();
1152 –    private static final long statusOffset =
1153 –        fieldOffset("status", ForkJoinTask.class);
1154 –
1158   }

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