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8254162: Implementation of Foreign-Memory Access API (Third Incubator)

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Reviewed-by: erikj, psandoz, alanb
This commit is contained in:
Maurizio Cimadamore 2020-11-12 16:37:23 +00:00
parent c6ab0fdb15
commit 3e70aac5cc
82 changed files with 6038 additions and 2837 deletions
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17
src/java.base/share/classes/java/nio/BufferMismatch.java
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@ -24,6 +24,7 @@
*/
package java.nio;
import jdk.internal.misc.ScopedMemoryAccess;
import jdk.internal.util.ArraysSupport;
/**
@ -31,12 +32,14 @@ import jdk.internal.util.ArraysSupport;
*/
final class BufferMismatch {
final static ScopedMemoryAccess SCOPED_MEMORY_ACCESS = ScopedMemoryAccess.getScopedMemoryAccess();
static int mismatch(ByteBuffer a, int aOff, ByteBuffer b, int bOff, int length) {
int i = 0;
if (length > 7) {
if (a.get(aOff) != b.get(bOff))
return 0;
i = ArraysSupport.vectorizedMismatch(
i = SCOPED_MEMORY_ACCESS.vectorizedMismatch(a.scope(), b.scope(),
a.base(), a.address + aOff,
b.base(), b.address + bOff,
length,
@ -60,7 +63,7 @@ final class BufferMismatch {
&& a.charRegionOrder() != null && b.charRegionOrder() != null) {
if (a.get(aOff) != b.get(bOff))
return 0;
i = ArraysSupport.vectorizedMismatch(
i = SCOPED_MEMORY_ACCESS.vectorizedMismatch(a.scope(), b.scope(),
a.base(), a.address + (aOff << ArraysSupport.LOG2_ARRAY_CHAR_INDEX_SCALE),
b.base(), b.address + (bOff << ArraysSupport.LOG2_ARRAY_CHAR_INDEX_SCALE),
length,
@ -80,7 +83,7 @@ final class BufferMismatch {
if (length > 3 && a.order() == b.order()) {
if (a.get(aOff) != b.get(bOff))
return 0;
i = ArraysSupport.vectorizedMismatch(
i = SCOPED_MEMORY_ACCESS.vectorizedMismatch(a.scope(), b.scope(),
a.base(), a.address + (aOff << ArraysSupport.LOG2_ARRAY_SHORT_INDEX_SCALE),
b.base(), b.address + (bOff << ArraysSupport.LOG2_ARRAY_SHORT_INDEX_SCALE),
length,
@ -100,7 +103,7 @@ final class BufferMismatch {
if (length > 1 && a.order() == b.order()) {
if (a.get(aOff) != b.get(bOff))
return 0;
i = ArraysSupport.vectorizedMismatch(
i = SCOPED_MEMORY_ACCESS.vectorizedMismatch(a.scope(), b.scope(),
a.base(), a.address + (aOff << ArraysSupport.LOG2_ARRAY_INT_INDEX_SCALE),
b.base(), b.address + (bOff << ArraysSupport.LOG2_ARRAY_INT_INDEX_SCALE),
length,
@ -119,7 +122,7 @@ final class BufferMismatch {
int i = 0;
if (length > 1 && a.order() == b.order()) {
if (Float.floatToRawIntBits(a.get(aOff)) == Float.floatToRawIntBits(b.get(bOff))) {
i = ArraysSupport.vectorizedMismatch(
i = SCOPED_MEMORY_ACCESS.vectorizedMismatch(a.scope(), b.scope(),
a.base(), a.address + (aOff << ArraysSupport.LOG2_ARRAY_FLOAT_INDEX_SCALE),
b.base(), b.address + (bOff << ArraysSupport.LOG2_ARRAY_FLOAT_INDEX_SCALE),
length,
@ -158,7 +161,7 @@ final class BufferMismatch {
if (length > 0 && a.order() == b.order()) {
if (a.get(aOff) != b.get(bOff))
return 0;
i = ArraysSupport.vectorizedMismatch(
i = SCOPED_MEMORY_ACCESS.vectorizedMismatch(a.scope(), b.scope(),
a.base(), a.address + (aOff << ArraysSupport.LOG2_ARRAY_LONG_INDEX_SCALE),
b.base(), b.address + (bOff << ArraysSupport.LOG2_ARRAY_LONG_INDEX_SCALE),
length,
@ -176,7 +179,7 @@ final class BufferMismatch {
int i = 0;
if (length > 0 && a.order() == b.order()) {
if (Double.doubleToRawLongBits(a.get(aOff)) == Double.doubleToRawLongBits(b.get(bOff))) {
i = ArraysSupport.vectorizedMismatch(
i = SCOPED_MEMORY_ACCESS.vectorizedMismatch(a.scope(), b.scope(),
a.base(), a.address + (aOff << ArraysSupport.LOG2_ARRAY_DOUBLE_INDEX_SCALE),
b.base(), b.address + (bOff << ArraysSupport.LOG2_ARRAY_DOUBLE_INDEX_SCALE),
length,