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root/jsr166/jsr166/src/main/java/util/concurrent/ConcurrentHashMap.java

Comparing jsr166/src/main/java/util/concurrent/ConcurrentHashMap.java (file contents):
Revision 1.166 by jsr166, Sat Jan 19 17:39:10 2013 UTC vs.
Revision 1.167 by jsr166, Sat Jan 19 20:39:43 2013 UTC

#	Line 6709 | Line 6709 | public class ConcurrentHashMap<K, V>
6709		private static final int ASHIFT;
6710
6711		static {
6712	–	int ss;
6712		try {
6713		U = sun.misc.Unsafe.getUnsafe();
6714		Class<?> k = ConcurrentHashMap.class;
#	Line 6728 | Line 6727 | public class ConcurrentHashMap<K, V>
6727		(ck.getDeclaredField("value"));
6728		Class<?> sc = Node[].class;
6729		ABASE = U.arrayBaseOffset(sc);
6730	<	ss = U.arrayIndexScale(sc);
6731	<	ASHIFT = 31 - Integer.numberOfLeadingZeros(ss);
6730	>	int scale = U.arrayIndexScale(sc);
6731	>	if ((scale & (scale - 1)) != 0)
6732	>	throw new Error("data type scale not a power of two");
6733	>	ASHIFT = 31 - Integer.numberOfLeadingZeros(scale);
6734		} catch (Exception e) {
6735		throw new Error(e);
6736		}
6736	–	if ((ss & (ss-1)) != 0)
6737	–	throw new Error("data type scale not a power of two");
6737		}
6738
6739		}

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