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8193085: Vectorize the nio Buffer equals and compareTo implementations

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Reviewed-by: alanb
This commit is contained in:
Paul Sandoz 2017-12-20 09:14:52 -08:00
parent 038b5f571c
commit fb9db6b02d
13 changed files with 1122 additions and 195 deletions
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11
src/java.base/share/classes/java/nio/Buffer.java
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@ -26,6 +26,7 @@
package java.nio;
import jdk.internal.HotSpotIntrinsicCandidate;
import jdk.internal.misc.Unsafe;
import java.util.Spliterator;
@ -181,6 +182,8 @@ import java.util.Spliterator;
*/
public abstract class Buffer {
// Cached unsafe-access object
static final Unsafe UNSAFE = Bits.unsafe();
/**
* The characteristics of Spliterators that traverse and split elements
@ -616,6 +619,14 @@ public abstract class Buffer {
// -- Package-private methods for bounds checking, etc. --
/**
*
* @return the base reference, paired with the address
* field, which in combination can be used for unsafe access into a heap
* buffer or direct byte buffer (and views of).
*/
abstract Object base();
/**
* Checks the current position against the limit, throwing a {@link
* BufferUnderflowException} if it is not smaller than the limit, and then