jdk/src/java.base/share/classes/java/lang/invoke/X-VarHandleSegmentView.java.template
2024-08-21 15:11:32 +00:00

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/*
* Copyright (c) 2019, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.lang.invoke;
import jdk.internal.foreign.AbstractMemorySegmentImpl;
import jdk.internal.foreign.Utils;
import jdk.internal.misc.ScopedMemoryAccess;
import jdk.internal.vm.annotation.ForceInline;
import java.lang.foreign.MemoryLayout;
import java.lang.foreign.MemorySegment;
import java.lang.ref.Reference;
import java.util.Objects;
import static java.lang.invoke.MethodHandleStatics.UNSAFE;
#warn
final class VarHandleSegmentAs$Type$s extends VarHandleSegmentViewBase {
static final boolean BE = UNSAFE.isBigEndian();
static final ScopedMemoryAccess SCOPED_MEMORY_ACCESS = ScopedMemoryAccess.getScopedMemoryAccess();
static final int NON_PLAIN_ACCESS_MIN_ALIGN_MASK = $BoxType$.BYTES - 1;
static final VarForm FORM = new VarForm(VarHandleSegmentAs$Type$s.class, MemorySegment.class, $type$.class, MemoryLayout.class, long.class, long.class);
VarHandleSegmentAs$Type$s(boolean be, long alignmentMask, boolean exact) {
super(FORM, be, alignmentMask, exact);
}
@Override
final MethodType accessModeTypeUncached(VarHandle.AccessType accessType) {
return accessType.accessModeType(MemorySegment.class, $type$.class, MemoryLayout.class, long.class, long.class);
}
@Override
public VarHandleSegmentAs$Type$s withInvokeExactBehavior() {
return hasInvokeExactBehavior() ?
this :
new VarHandleSegmentAs$Type$s(be, alignmentMask, true);
}
@Override
public VarHandleSegmentAs$Type$s withInvokeBehavior() {
return !hasInvokeExactBehavior() ?
this :
new VarHandleSegmentAs$Type$s(be, alignmentMask, false);
}
#if[floatingPoint]
@ForceInline
static $rawType$ convEndian(boolean big, $type$ v) {
$rawType$ rv = $Type$.$type$ToRaw$RawType$Bits(v);
return big == BE ? rv : $RawBoxType$.reverseBytes(rv);
}
@ForceInline
static $type$ convEndian(boolean big, $rawType$ rv) {
rv = big == BE ? rv : $RawBoxType$.reverseBytes(rv);
return $Type$.$rawType$BitsTo$Type$(rv);
}
#else[floatingPoint]
#if[byte]
@ForceInline
static $type$ convEndian(boolean big, $type$ n) {
return n;
}
#else[byte]
@ForceInline
static $type$ convEndian(boolean big, $type$ n) {
return big == BE ? n : $BoxType$.reverseBytes(n);
}
#end[byte]
#end[floatingPoint]
@ForceInline
static AbstractMemorySegmentImpl checkSegment(Object obb, Object encl, long base, boolean ro) {
AbstractMemorySegmentImpl oo = (AbstractMemorySegmentImpl)Objects.requireNonNull(obb);
oo.checkEnclosingLayout(base, (MemoryLayout)encl, ro);
return oo;
}
@ForceInline
static long offsetNonPlain(AbstractMemorySegmentImpl bb, long base, long offset, long alignmentMask) {
if ((alignmentMask & NON_PLAIN_ACCESS_MIN_ALIGN_MASK) != NON_PLAIN_ACCESS_MIN_ALIGN_MASK) {
throw VarHandleSegmentViewBase.newUnsupportedAccessModeForAlignment(alignmentMask + 1);
}
return offsetPlain(bb, base, offset);
}
@ForceInline
static long offsetPlain(AbstractMemorySegmentImpl bb, long base, long offset) {
long segment_base = bb.unsafeGetOffset();
return segment_base + base + offset;
}
@ForceInline
static $type$ get(VarHandle ob, Object obb, Object encl, long base, long offset) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, true);
#if[floatingPoint]
$rawType$ rawValue = SCOPED_MEMORY_ACCESS.get$RawType$Unaligned(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetPlain(bb, base, offset),
handle.be);
return $Type$.$rawType$BitsTo$Type$(rawValue);
#else[floatingPoint]
#if[byte]
return SCOPED_MEMORY_ACCESS.get$Type$(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetPlain(bb, base, offset));
#else[byte]
return SCOPED_MEMORY_ACCESS.get$Type$Unaligned(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetPlain(bb, base, offset),
handle.be);
#end[byte]
#end[floatingPoint]
}
@ForceInline
static void set(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
#if[floatingPoint]
SCOPED_MEMORY_ACCESS.put$RawType$Unaligned(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetPlain(bb, base, offset),
$Type$.$type$ToRaw$RawType$Bits(value),
handle.be);
#else[floatingPoint]
#if[byte]
SCOPED_MEMORY_ACCESS.put$Type$(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetPlain(bb, base, offset),
value);
#else[byte]
SCOPED_MEMORY_ACCESS.put$Type$Unaligned(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetPlain(bb, base, offset),
value,
handle.be);
#end[byte]
#end[floatingPoint]
}
@ForceInline
static $type$ getVolatile(VarHandle ob, Object obb, Object encl, long base, long offset) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, true);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.get$RawType$Volatile(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask)));
}
@ForceInline
static void setVolatile(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
SCOPED_MEMORY_ACCESS.put$RawType$Volatile(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, value));
}
@ForceInline
static $type$ getAcquire(VarHandle ob, Object obb, Object encl, long base, long offset) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, true);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.get$RawType$Acquire(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask)));
}
@ForceInline
static void setRelease(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
SCOPED_MEMORY_ACCESS.put$RawType$Release(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, value));
}
@ForceInline
static $type$ getOpaque(VarHandle ob, Object obb, Object encl, long base, long offset) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, true);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.get$RawType$Opaque(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask)));
}
@ForceInline
static void setOpaque(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
SCOPED_MEMORY_ACCESS.put$RawType$Opaque(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, value));
}
#if[CAS]
@ForceInline
static boolean compareAndSet(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ expected, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
return SCOPED_MEMORY_ACCESS.compareAndSet$RawType$(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value));
}
@ForceInline
static $type$ compareAndExchange(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ expected, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.compareAndExchange$RawType$(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value)));
}
@ForceInline
static $type$ compareAndExchangeAcquire(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ expected, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.compareAndExchange$RawType$Acquire(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value)));
}
@ForceInline
static $type$ compareAndExchangeRelease(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ expected, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.compareAndExchange$RawType$Release(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value)));
}
@ForceInline
static boolean weakCompareAndSetPlain(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ expected, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
return SCOPED_MEMORY_ACCESS.weakCompareAndSet$RawType$Plain(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value));
}
@ForceInline
static boolean weakCompareAndSet(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ expected, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
return SCOPED_MEMORY_ACCESS.weakCompareAndSet$RawType$(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value));
}
@ForceInline
static boolean weakCompareAndSetAcquire(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ expected, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
return SCOPED_MEMORY_ACCESS.weakCompareAndSet$RawType$Acquire(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value));
}
@ForceInline
static boolean weakCompareAndSetRelease(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ expected, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
return SCOPED_MEMORY_ACCESS.weakCompareAndSet$RawType$Release(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value));
}
@ForceInline
static $type$ getAndSet(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.getAndSet$RawType$(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, value)));
}
@ForceInline
static $type$ getAndSetAcquire(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.getAndSet$RawType$Acquire(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, value)));
}
@ForceInline
static $type$ getAndSetRelease(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.getAndSet$RawType$Release(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
convEndian(handle.be, value)));
}
#end[CAS]
#if[AtomicAdd]
@ForceInline
static $type$ getAndAdd(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ delta) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
if (handle.be == BE) {
return SCOPED_MEMORY_ACCESS.getAndAdd$RawType$(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
delta);
} else {
return getAndAddConvEndianWithCAS(bb, offsetNonPlain(bb, base, offset, handle.alignmentMask), delta);
}
}
@ForceInline
static $type$ getAndAddAcquire(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ delta) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
if (handle.be == BE) {
return SCOPED_MEMORY_ACCESS.getAndAdd$RawType$Acquire(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
delta);
} else {
return getAndAddConvEndianWithCAS(bb, offsetNonPlain(bb, base, offset, handle.alignmentMask), delta);
}
}
@ForceInline
static $type$ getAndAddRelease(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ delta) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
if (handle.be == BE) {
return SCOPED_MEMORY_ACCESS.getAndAdd$RawType$Release(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
delta);
} else {
return getAndAddConvEndianWithCAS(bb, offsetNonPlain(bb, base, offset, handle.alignmentMask), delta);
}
}
@ForceInline
static $type$ getAndAddConvEndianWithCAS(AbstractMemorySegmentImpl bb, long offset, $type$ delta) {
$type$ nativeExpectedValue, expectedValue;
Object base = bb.unsafeGetBase();
do {
nativeExpectedValue = SCOPED_MEMORY_ACCESS.get$RawType$Volatile(bb.sessionImpl(),base, offset);
expectedValue = $RawBoxType$.reverseBytes(nativeExpectedValue);
} while (!SCOPED_MEMORY_ACCESS.weakCompareAndSet$RawType$(bb.sessionImpl(),base, offset,
nativeExpectedValue, $RawBoxType$.reverseBytes(expectedValue + delta)));
return expectedValue;
}
#end[AtomicAdd]
#if[Bitwise]
@ForceInline
static $type$ getAndBitwiseOr(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
if (handle.be == BE) {
return SCOPED_MEMORY_ACCESS.getAndBitwiseOr$RawType$(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
value);
} else {
return getAndBitwiseOrConvEndianWithCAS(bb, offsetNonPlain(bb, base, offset, handle.alignmentMask), value);
}
}
@ForceInline
static $type$ getAndBitwiseOrRelease(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
if (handle.be == BE) {
return SCOPED_MEMORY_ACCESS.getAndBitwiseOr$RawType$Release(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
value);
} else {
return getAndBitwiseOrConvEndianWithCAS(bb, offsetNonPlain(bb, base, offset, handle.alignmentMask), value);
}
}
@ForceInline
static $type$ getAndBitwiseOrAcquire(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
if (handle.be == BE) {
return SCOPED_MEMORY_ACCESS.getAndBitwiseOr$RawType$Acquire(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
value);
} else {
return getAndBitwiseOrConvEndianWithCAS(bb, offsetNonPlain(bb, base, offset, handle.alignmentMask), value);
}
}
@ForceInline
static $type$ getAndBitwiseOrConvEndianWithCAS(AbstractMemorySegmentImpl bb, long offset, $type$ value) {
$type$ nativeExpectedValue, expectedValue;
Object base = bb.unsafeGetBase();
do {
nativeExpectedValue = SCOPED_MEMORY_ACCESS.get$RawType$Volatile(bb.sessionImpl(),base, offset);
expectedValue = $RawBoxType$.reverseBytes(nativeExpectedValue);
} while (!SCOPED_MEMORY_ACCESS.weakCompareAndSet$RawType$(bb.sessionImpl(),base, offset,
nativeExpectedValue, $RawBoxType$.reverseBytes(expectedValue | value)));
return expectedValue;
}
@ForceInline
static $type$ getAndBitwiseAnd(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
if (handle.be == BE) {
return SCOPED_MEMORY_ACCESS.getAndBitwiseAnd$RawType$(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
value);
} else {
return getAndBitwiseAndConvEndianWithCAS(bb, offsetNonPlain(bb, base, offset, handle.alignmentMask), value);
}
}
@ForceInline
static $type$ getAndBitwiseAndRelease(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
if (handle.be == BE) {
return SCOPED_MEMORY_ACCESS.getAndBitwiseAnd$RawType$Release(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
value);
} else {
return getAndBitwiseAndConvEndianWithCAS(bb, offsetNonPlain(bb, base, offset, handle.alignmentMask), value);
}
}
@ForceInline
static $type$ getAndBitwiseAndAcquire(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
if (handle.be == BE) {
return SCOPED_MEMORY_ACCESS.getAndBitwiseAnd$RawType$Acquire(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
value);
} else {
return getAndBitwiseAndConvEndianWithCAS(bb, offsetNonPlain(bb, base, offset, handle.alignmentMask), value);
}
}
@ForceInline
static $type$ getAndBitwiseAndConvEndianWithCAS(AbstractMemorySegmentImpl bb, long offset, $type$ value) {
$type$ nativeExpectedValue, expectedValue;
Object base = bb.unsafeGetBase();
do {
nativeExpectedValue = SCOPED_MEMORY_ACCESS.get$RawType$Volatile(bb.sessionImpl(),base, offset);
expectedValue = $RawBoxType$.reverseBytes(nativeExpectedValue);
} while (!SCOPED_MEMORY_ACCESS.weakCompareAndSet$RawType$(bb.sessionImpl(),base, offset,
nativeExpectedValue, $RawBoxType$.reverseBytes(expectedValue & value)));
return expectedValue;
}
@ForceInline
static $type$ getAndBitwiseXor(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
if (handle.be == BE) {
return SCOPED_MEMORY_ACCESS.getAndBitwiseXor$RawType$(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
value);
} else {
return getAndBitwiseXorConvEndianWithCAS(bb, offsetNonPlain(bb, base, offset, handle.alignmentMask), value);
}
}
@ForceInline
static $type$ getAndBitwiseXorRelease(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
if (handle.be == BE) {
return SCOPED_MEMORY_ACCESS.getAndBitwiseXor$RawType$Release(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
value);
} else {
return getAndBitwiseXorConvEndianWithCAS(bb, offsetNonPlain(bb, base, offset, handle.alignmentMask), value);
}
}
@ForceInline
static $type$ getAndBitwiseXorAcquire(VarHandle ob, Object obb, Object encl, long base, long offset, $type$ value) {
VarHandleSegmentViewBase handle = (VarHandleSegmentViewBase)ob;
AbstractMemorySegmentImpl bb = checkSegment(obb, encl, base, false);
if (handle.be == BE) {
return SCOPED_MEMORY_ACCESS.getAndBitwiseXor$RawType$Acquire(bb.sessionImpl(),
bb.unsafeGetBase(),
offsetNonPlain(bb, base, offset, handle.alignmentMask),
value);
} else {
return getAndBitwiseXorConvEndianWithCAS(bb, offsetNonPlain(bb, base, offset, handle.alignmentMask), value);
}
}
@ForceInline
static $type$ getAndBitwiseXorConvEndianWithCAS(AbstractMemorySegmentImpl bb, long offset, $type$ value) {
$type$ nativeExpectedValue, expectedValue;
Object base = bb.unsafeGetBase();
do {
nativeExpectedValue = SCOPED_MEMORY_ACCESS.get$RawType$Volatile(bb.sessionImpl(),base, offset);
expectedValue = $RawBoxType$.reverseBytes(nativeExpectedValue);
} while (!SCOPED_MEMORY_ACCESS.weakCompareAndSet$RawType$(bb.sessionImpl(),base, offset,
nativeExpectedValue, $RawBoxType$.reverseBytes(expectedValue ^ value)));
return expectedValue;
}
#end[Bitwise]
}