--- jsr166/src/jsr166e/ForkJoinPool.java 2013/01/03 19:21:20 1.43 +++ jsr166/src/jsr166e/ForkJoinPool.java 2013/01/13 21:56:12 1.46 @@ -1248,7 +1248,7 @@ public class ForkJoinPool extends Abstra /* * Acquires the plock lock to protect worker array and related * updates. This method is called only if an initial CAS on plock - * fails. This acts as a spinLock for normal cases, but falls back + * fails. This acts as a spinlock for normal cases, but falls back * to builtin monitor to block when (rarely) needed. This would be * a terrible idea for a highly contended lock, but works fine as * a more conservative alternative to a pure spinlock. @@ -2559,6 +2559,7 @@ public class ForkJoinPool extends Abstra * exit. * * @return the common pool instance + * @since 1.8 */ public static ForkJoinPool commonPool() { // assert common != null : "static init error"; @@ -2741,6 +2742,7 @@ public class ForkJoinPool extends Abstra * Returns the targeted parallelism level of the common pool. * * @return the targeted parallelism level of the common pool + * @since 1.8 */ public static int getCommonPoolParallelism() { return commonParallelism; @@ -3408,22 +3410,23 @@ public class ForkJoinPool extends Abstra private static sun.misc.Unsafe getUnsafe() { try { return sun.misc.Unsafe.getUnsafe(); - } catch (SecurityException se) { - try { - return java.security.AccessController.doPrivileged - (new java.security - .PrivilegedExceptionAction() { - public sun.misc.Unsafe run() throws Exception { - java.lang.reflect.Field f = sun.misc - .Unsafe.class.getDeclaredField("theUnsafe"); - f.setAccessible(true); - return (sun.misc.Unsafe) f.get(null); - }}); - } catch (java.security.PrivilegedActionException e) { - throw new RuntimeException("Could not initialize intrinsics", - e.getCause()); - } + } catch (SecurityException tryReflectionInstead) {} + try { + return java.security.AccessController.doPrivileged + (new java.security.PrivilegedExceptionAction() { + public sun.misc.Unsafe run() throws Exception { + Class k = sun.misc.Unsafe.class; + for (java.lang.reflect.Field f : k.getDeclaredFields()) { + f.setAccessible(true); + Object x = f.get(null); + if (k.isInstance(x)) + return k.cast(x); + } + throw new NoSuchFieldError("the Unsafe"); + }}); + } catch (java.security.PrivilegedActionException e) { + throw new RuntimeException("Could not initialize intrinsics", + e.getCause()); } } - }