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8234049: Implementation of Memory Access API (Incubator)

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Co-authored-by: Vlaidmir Ivanov <vladimir.x.ivanov@oracle.com>
Reviewed-by: alanb, psandoz, chegar, rriggs, plevart, briangoetz, jrose, adinn, vlivanov
This commit is contained in:
Jorn Vernee 2019-12-12 22:59:57 +00:00 • committed by Maurizio Cimadamore
parent 7cdecd8981
commit 8f4f088a12
59 changed files with 7849 additions and 147 deletions
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21
src/java.base/share/classes/java/nio/X-Buffer.java.template
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@ -37,6 +37,7 @@ import java.util.stream.$Streamtype$Stream;
#end[streamableType]
import java.util.Objects;
import jdk.internal.access.foreign.MemorySegmentProxy;
import jdk.internal.util.ArraysSupport;
/**
@ -279,17 +280,25 @@ public abstract class $Type$Buffer
// backing array, and array offset
//
$Type$Buffer(int mark, int pos, int lim, int cap, // package-private
$type$[] hb, int offset)
$type$[] hb, int offset, MemorySegmentProxy segment)
{
super(mark, pos, lim, cap);
super(mark, pos, lim, cap, segment);
this.hb = hb;
this.offset = offset;
}
// Creates a new buffer with the given mark, position, limit, and capacity
//
$Type$Buffer(int mark, int pos, int lim, int cap) { // package-private
this(mark, pos, lim, cap, null, 0);
$Type$Buffer(int mark, int pos, int lim, int cap, MemorySegmentProxy segment) { // package-private
this(mark, pos, lim, cap, null, 0, segment);
}
// Creates a new buffer with given base, address and capacity
//
$Type$Buffer($type$[] hb, long addr, int cap, MemorySegmentProxy segment) { // package-private
super(addr, cap, segment);
this.hb = hb;
this.offset = 0;
}
@Override
@ -348,7 +357,7 @@ public abstract class $Type$Buffer
public static $Type$Buffer allocate(int capacity) {
if (capacity < 0)
throw createCapacityException(capacity);
return new Heap$Type$Buffer(capacity, capacity);
return new Heap$Type$Buffer(capacity, capacity, null);
}
/**
@ -393,7 +402,7 @@ public abstract class $Type$Buffer
int offset, int length)
{
try {
return new Heap$Type$Buffer(array, offset, length);
return new Heap$Type$Buffer(array, offset, length, null);
} catch (IllegalArgumentException x) {
throw new IndexOutOfBoundsException();
}