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root/jsr166/jsr166/src/extra166y/CustomConcurrentHashMap.java

Comparing jsr166/src/extra166y/CustomConcurrentHashMap.java (file contents):
Revision 1.24 by jsr166, Sun Dec 30 02:05:53 2012 UTC vs.
Revision 1.25 by jsr166, Wed Jan 9 02:51:36 2013 UTC

#	Line 3003 | Line 3003 | public class CustomConcurrentHashMap<K,
3003		static final long segmentsBase;
3004		static final int segmentsShift;
3005
3006	–	private static Unsafe getUnsafe() throws Throwable {
3007	–	try {
3008	–	return Unsafe.getUnsafe();
3009	–	} catch (SecurityException se) {
3010	–	try {
3011	–	return java.security.AccessController.doPrivileged
3012	–	(new java.security.PrivilegedExceptionAction<Unsafe>() {
3013	–	public Unsafe run() throws Exception {
3014	–	return getUnsafePrivileged();
3015	–	}});
3016	–	} catch (java.security.PrivilegedActionException e) {
3017	–	throw e.getCause();
3018	–	}
3019	–	}
3020	–	}
3021	–
3022	–	private static Unsafe getUnsafePrivileged()
3023	–	throws NoSuchFieldException, IllegalAccessException {
3024	–	Field f = Unsafe.class.getDeclaredField("theUnsafe");
3025	–	f.setAccessible(true);
3026	–	return (Unsafe) f.get(null);
3027	–	}
3028	–
3006		static {
3007		try {
3008		UNSAFE = getUnsafe();
#	Line 3057 | Line 3034 | public class CustomConcurrentHashMap<K,
3034		UNSAFE.putOrderedObject(segs, segmentOffset, s);
3035		}
3036
3037	<
3037	>	/**
3038	>	* Returns a sun.misc.Unsafe.  Suitable for use in a 3rd party package.
3039	>	* Replace with a simple call to Unsafe.getUnsafe when integrating
3040	>	* into a jdk.
3041	>	*
3042	>	* @return a sun.misc.Unsafe
3043	>	*/
3044	>	private static sun.misc.Unsafe getUnsafe() {
3045	>	try {
3046	>	return sun.misc.Unsafe.getUnsafe();
3047	>	} catch (SecurityException tryReflectionInstead) {}
3048	>	try {
3049	>	return java.security.AccessController.doPrivileged
3050	>	(new java.security.PrivilegedExceptionAction<sun.misc.Unsafe>() {
3051	>	public sun.misc.Unsafe run() throws Exception {
3052	>	Class<sun.misc.Unsafe> k = sun.misc.Unsafe.class;
3053	>	for (java.lang.reflect.Field f : k.getDeclaredFields()) {
3054	>	f.setAccessible(true);
3055	>	Object x = f.get(null);
3056	>	if (k.isInstance(x))
3057	>	return k.cast(x);
3058	>	}
3059	>	throw new NoSuchFieldError("the Unsafe");
3060	>	}});
3061	>	} catch (java.security.PrivilegedActionException e) {
3062	>	throw new RuntimeException("Could not initialize intrinsics",
3063	>	e.getCause());
3064	>	}
3065	>	}
3066		}

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