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8254354: Add a withInvokeExactBehavior() VarHandle combinator

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Reviewed-by: psandoz, chegar
This commit is contained in:
Jorn Vernee 2020-11-10 23:26:02 +00:00
parent d6f1463cb3
commit 0a41ca6b75
12 changed files with 1660 additions and 459 deletions
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114
src/java.base/share/classes/java/lang/invoke/X-VarHandle.java.template
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@ -45,12 +45,12 @@ final class VarHandle$Type$s {
#end[Object]
FieldInstanceReadOnly(Class<?> receiverType, long fieldOffset{#if[Object]?, Class<?> fieldType}) {
this(receiverType, fieldOffset{#if[Object]?, fieldType}, FieldInstanceReadOnly.FORM);
this(receiverType, fieldOffset{#if[Object]?, fieldType}, FieldInstanceReadOnly.FORM, false);
}
protected FieldInstanceReadOnly(Class<?> receiverType, long fieldOffset{#if[Object]?, Class<?> fieldType},
VarForm form) {
super(form);
VarForm form, boolean exact) {
super(form, exact);
this.fieldOffset = fieldOffset;
this.receiverType = receiverType;
#if[Object]
@ -59,8 +59,22 @@ final class VarHandle$Type$s {
}
@Override
final MethodType accessModeTypeUncached(AccessMode accessMode) {
return accessMode.at.accessModeType(receiverType, {#if[Object]?fieldType:$type$.class});
public FieldInstanceReadOnly withInvokeExactBehavior() {
return hasInvokeExactBehavior()
? this
: new FieldInstanceReadOnly(receiverType, fieldOffset{#if[Object]?, fieldType}, vform, true);
}
@Override
public FieldInstanceReadOnly withInvokeBehavior() {
return !hasInvokeExactBehavior()
? this
: new FieldInstanceReadOnly(receiverType, fieldOffset{#if[Object]?, fieldType}, vform, false);
}
@Override
final MethodType accessModeTypeUncached(AccessType at) {
return at.accessModeType(receiverType, {#if[Object]?fieldType:$type$.class});
}
@Override
@ -110,7 +124,26 @@ final class VarHandle$Type$s {
static final class FieldInstanceReadWrite extends FieldInstanceReadOnly {
FieldInstanceReadWrite(Class<?> receiverType, long fieldOffset{#if[Object]?, Class<?> fieldType}) {
super(receiverType, fieldOffset{#if[Object]?, fieldType}, FieldInstanceReadWrite.FORM);
this(receiverType, fieldOffset{#if[Object]?, fieldType}, false);
}
private FieldInstanceReadWrite(Class<?> receiverType, long fieldOffset{#if[Object]?, Class<?> fieldType},
boolean exact) {
super(receiverType, fieldOffset{#if[Object]?, fieldType}, FieldInstanceReadWrite.FORM, exact);
}
@Override
public FieldInstanceReadWrite withInvokeExactBehavior() {
return hasInvokeExactBehavior()
? this
: new FieldInstanceReadWrite(receiverType, fieldOffset{#if[Object]?, fieldType}, true);
}
@Override
public FieldInstanceReadWrite withInvokeBehavior() {
return !hasInvokeExactBehavior()
? this
: new FieldInstanceReadWrite(receiverType, fieldOffset{#if[Object]?, fieldType}, false);
}
@ForceInline
@ -356,12 +389,12 @@ final class VarHandle$Type$s {
#end[Object]
FieldStaticReadOnly(Object base, long fieldOffset{#if[Object]?, Class<?> fieldType}) {
this(base, fieldOffset{#if[Object]?, fieldType}, FieldStaticReadOnly.FORM);
this(base, fieldOffset{#if[Object]?, fieldType}, FieldStaticReadOnly.FORM, false);
}
protected FieldStaticReadOnly(Object base, long fieldOffset{#if[Object]?, Class<?> fieldType},
VarForm form) {
super(form);
VarForm form, boolean exact) {
super(form, exact);
this.base = base;
this.fieldOffset = fieldOffset;
#if[Object]
@ -369,6 +402,20 @@ final class VarHandle$Type$s {
#end[Object]
}
@Override
public FieldStaticReadOnly withInvokeExactBehavior() {
return hasInvokeExactBehavior()
? this
: new FieldStaticReadOnly(base, fieldOffset{#if[Object]?, fieldType}, vform, true);
}
@Override
public FieldStaticReadOnly withInvokeBehavior() {
return !hasInvokeExactBehavior()
? this
: new FieldStaticReadOnly(base, fieldOffset{#if[Object]?, fieldType}, vform, false);
}
@Override
public Optional<VarHandleDesc> describeConstable() {
var fieldTypeRef = {#if[Object]?fieldType:$type$.class}.describeConstable();
@ -385,8 +432,8 @@ final class VarHandle$Type$s {
}
@Override
final MethodType accessModeTypeUncached(AccessMode accessMode) {
return accessMode.at.accessModeType(null, {#if[Object]?fieldType:$type$.class});
final MethodType accessModeTypeUncached(AccessType at) {
return at.accessModeType(null, {#if[Object]?fieldType:$type$.class});
}
@ForceInline
@ -423,7 +470,26 @@ final class VarHandle$Type$s {
static final class FieldStaticReadWrite extends FieldStaticReadOnly {
FieldStaticReadWrite(Object base, long fieldOffset{#if[Object]?, Class<?> fieldType}) {
super(base, fieldOffset{#if[Object]?, fieldType}, FieldStaticReadWrite.FORM);
this(base, fieldOffset{#if[Object]?, fieldType}, false);
}
private FieldStaticReadWrite(Object base, long fieldOffset{#if[Object]?, Class<?> fieldType},
boolean exact) {
super(base, fieldOffset{#if[Object]?, fieldType}, FieldStaticReadWrite.FORM, exact);
}
@Override
public FieldStaticReadWrite withInvokeExactBehavior() {
return hasInvokeExactBehavior()
? this
: new FieldStaticReadWrite(base, fieldOffset{#if[Object]?, fieldType}, true);
}
@Override
public FieldStaticReadWrite withInvokeBehavior() {
return !hasInvokeExactBehavior()
? this
: new FieldStaticReadWrite(base, fieldOffset{#if[Object]?, fieldType}, false);
}
@ForceInline
@ -670,7 +736,11 @@ final class VarHandle$Type$s {
#end[Object]
Array(int abase, int ashift{#if[Object]?, Class<?> arrayType}) {
super(Array.FORM);
this(abase, ashift{#if[Object]?, arrayType}, false);
}
private Array(int abase, int ashift{#if[Object]?, Class<?> arrayType}, boolean exact) {
super(Array.FORM, exact);
this.abase = abase;
this.ashift = ashift;
#if[Object]
@ -679,6 +749,20 @@ final class VarHandle$Type$s {
#end[Object]
}
@Override
public Array withInvokeExactBehavior() {
return hasInvokeExactBehavior()
? this
: new Array(abase, ashift{#if[Object]?, arrayType}, true);
}
@Override
public Array withInvokeBehavior() {
return !hasInvokeExactBehavior()
? this
: new Array(abase, ashift{#if[Object]?, arrayType}, false);
}
@Override
public Optional<VarHandleDesc> describeConstable() {
var arrayTypeRef = {#if[Object]?arrayType:$type$[].class}.describeConstable();
@ -689,8 +773,8 @@ final class VarHandle$Type$s {
}
@Override
final MethodType accessModeTypeUncached(AccessMode accessMode) {
return accessMode.at.accessModeType({#if[Object]?arrayType:$type$[].class}, {#if[Object]?arrayType.getComponentType():$type$.class}, int.class);
final MethodType accessModeTypeUncached(AccessType at) {
return at.accessModeType({#if[Object]?arrayType:$type$[].class}, {#if[Object]?arrayType.getComponentType():$type$.class}, int.class);
}
#if[Object]