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root/jsr166/jsr166/src/jdk7/java/util/concurrent/ConcurrentHashMap.java

Comparing jsr166/src/jdk7/java/util/concurrent/ConcurrentHashMap.java (file contents):
Revision 1.8 by jsr166, Fri Jan 18 04:23:27 2013 UTC vs.
Revision 1.9 by jsr166, Sat Jan 19 20:39:43 2013 UTC

#	Line 6806 | Line 6806 | public class ConcurrentHashMap<K, V>
6806		private static final int ASHIFT;
6807
6808		static {
6809	–	int ss;
6809		try {
6810		U = sun.misc.Unsafe.getUnsafe();
6811		Class<?> k = ConcurrentHashMap.class;
#	Line 6825 | Line 6824 | public class ConcurrentHashMap<K, V>
6824		(ck.getDeclaredField("value"));
6825		Class<?> sc = Node[].class;
6826		ABASE = U.arrayBaseOffset(sc);
6827	<	ss = U.arrayIndexScale(sc);
6828	<	ASHIFT = 31 - Integer.numberOfLeadingZeros(ss);
6827	>	int scale = U.arrayIndexScale(sc);
6828	>	if ((scale & (scale - 1)) != 0)
6829	>	throw new Error("data type scale not a power of two");
6830	>	ASHIFT = 31 - Integer.numberOfLeadingZeros(scale);
6831		} catch (Exception e) {
6832		throw new Error(e);
6833		}
6833	–	if ((ss & (ss-1)) != 0)
6834	–	throw new Error("data type scale not a power of two");
6834		}
6835
6836		}

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