package java.lang.invoke;
import jdk.internal.access.foreign.MemorySegmentProxy;
import jdk.internal.misc.ScopedMemoryAccess;
import jdk.internal.vm.annotation.ForceInline;
import java.lang.ref.Reference;
import java.util.Objects;
import static java.lang.invoke.MethodHandleStatics.UNSAFE;
final class MemoryAccessVarHandleFloatHelper extends MemoryAccessVarHandleBase {
static final boolean BE = UNSAFE.isBigEndian();
static final ScopedMemoryAccess SCOPED_MEMORY_ACCESS = ScopedMemoryAccess.getScopedMemoryAccess();
static final int VM_ALIGN = Float.BYTES - 1;
static final VarForm FORM = new VarForm(MemoryAccessVarHandleFloatHelper.class, MemorySegmentProxy.class, float.class, long.class);
MemoryAccessVarHandleFloatHelper(boolean skipAlignmentMaskCheck, boolean be, long length, long alignmentMask, boolean exact) {
super(FORM, skipAlignmentMaskCheck, be, length, alignmentMask, exact);
}
@Override
final MethodType accessModeTypeUncached(VarHandle.AccessType accessType) {
return accessType.accessModeType(MemorySegmentProxy.class, float.class, long.class);
}
@Override
public MemoryAccessVarHandleFloatHelper withInvokeExactBehavior() {
return hasInvokeExactBehavior() ?
this :
new MemoryAccessVarHandleFloatHelper(skipAlignmentMaskCheck, be, length, alignmentMask, true);
}
@Override
public MemoryAccessVarHandleFloatHelper withInvokeBehavior() {
return !hasInvokeExactBehavior() ?
this :
new MemoryAccessVarHandleFloatHelper(skipAlignmentMaskCheck, be, length, alignmentMask, false);
}
@ForceInline
static int convEndian(boolean big, float v) {
int rv = Float.floatToRawIntBits(v);
return big == BE ? rv : Integer.reverseBytes(rv);
}
@ForceInline
static float convEndian(boolean big, int rv) {
rv = big == BE ? rv : Integer.reverseBytes(rv);
return Float.intBitsToFloat(rv);
}
@ForceInline
static MemorySegmentProxy checkAddress(Object obb, long offset, long length, boolean ro) {
MemorySegmentProxy oo = (MemorySegmentProxy)Objects.requireNonNull(obb);
oo.checkAccess(offset, length, ro);
return oo;
}
@ForceInline
static long offset(boolean skipAlignmentMaskCheck, MemorySegmentProxy bb, long offset, long alignmentMask) {
long address = offsetNoVMAlignCheck(skipAlignmentMaskCheck, bb, offset, alignmentMask);
if ((address & VM_ALIGN) != 0) {
throw MemoryAccessVarHandleBase.newIllegalStateExceptionForMisalignedAccess(address);
}
return address;
}
@ForceInline
static long offsetNoVMAlignCheck(boolean skipAlignmentMaskCheck, MemorySegmentProxy bb, long offset, long alignmentMask) {
long base = bb.unsafeGetOffset();
long address = base + offset;
if (skipAlignmentMaskCheck) {
if ((base & alignmentMask) != 0) {
throw MemoryAccessVarHandleBase.newIllegalStateExceptionForMisalignedAccess(address);
}
} else {
if ((address & alignmentMask) != 0) {
throw MemoryAccessVarHandleBase.newIllegalStateExceptionForMisalignedAccess(address);
}
}
return address;
}
@ForceInline
static float get(VarHandle ob, Object obb, long base) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, true);
int rawValue = SCOPED_MEMORY_ACCESS.getIntUnaligned(bb.scope(),
bb.unsafeGetBase(),
offsetNoVMAlignCheck(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
handle.be);
return Float.intBitsToFloat(rawValue);
}
@ForceInline
static void set(VarHandle ob, Object obb, long base, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
SCOPED_MEMORY_ACCESS.putIntUnaligned(bb.scope(),
bb.unsafeGetBase(),
offsetNoVMAlignCheck(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
Float.floatToRawIntBits(value),
handle.be);
}
@ForceInline
static float getVolatile(VarHandle ob, Object obb, long base) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, true);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.getIntVolatile(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask)));
}
@ForceInline
static void setVolatile(VarHandle ob, Object obb, long base, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
SCOPED_MEMORY_ACCESS.putIntVolatile(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, value));
}
@ForceInline
static float getAcquire(VarHandle ob, Object obb, long base) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, true);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.getIntAcquire(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask)));
}
@ForceInline
static void setRelease(VarHandle ob, Object obb, long base, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
SCOPED_MEMORY_ACCESS.putIntRelease(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, value));
}
@ForceInline
static float getOpaque(VarHandle ob, Object obb, long base) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, true);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.getIntOpaque(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask)));
}
@ForceInline
static void setOpaque(VarHandle ob, Object obb, long base, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
SCOPED_MEMORY_ACCESS.putIntOpaque(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, value));
}
@ForceInline
static boolean compareAndSet(VarHandle ob, Object obb, long base, float expected, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
return SCOPED_MEMORY_ACCESS.compareAndSetInt(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value));
}
@ForceInline
static float compareAndExchange(VarHandle ob, Object obb, long base, float expected, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.compareAndExchangeInt(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value)));
}
@ForceInline
static float compareAndExchangeAcquire(VarHandle ob, Object obb, long base, float expected, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.compareAndExchangeIntAcquire(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value)));
}
@ForceInline
static float compareAndExchangeRelease(VarHandle ob, Object obb, long base, float expected, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.compareAndExchangeIntRelease(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value)));
}
@ForceInline
static boolean weakCompareAndSetPlain(VarHandle ob, Object obb, long base, float expected, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
return SCOPED_MEMORY_ACCESS.weakCompareAndSetIntPlain(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value));
}
@ForceInline
static boolean weakCompareAndSet(VarHandle ob, Object obb, long base, float expected, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
return SCOPED_MEMORY_ACCESS.weakCompareAndSetInt(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value));
}
@ForceInline
static boolean weakCompareAndSetAcquire(VarHandle ob, Object obb, long base, float expected, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
return SCOPED_MEMORY_ACCESS.weakCompareAndSetIntAcquire(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value));
}
@ForceInline
static boolean weakCompareAndSetRelease(VarHandle ob, Object obb, long base, float expected, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
return SCOPED_MEMORY_ACCESS.weakCompareAndSetIntRelease(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, expected), convEndian(handle.be, value));
}
@ForceInline
static float getAndSet(VarHandle ob, Object obb, long base, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.getAndSetInt(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, value)));
}
@ForceInline
static float getAndSetAcquire(VarHandle ob, Object obb, long base, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.getAndSetIntAcquire(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, value)));
}
@ForceInline
static float getAndSetRelease(VarHandle ob, Object obb, long base, float value) {
MemoryAccessVarHandleBase handle = (MemoryAccessVarHandleBase)ob;
MemorySegmentProxy bb = checkAddress(obb, base, handle.length, false);
return convEndian(handle.be,
SCOPED_MEMORY_ACCESS.getAndSetIntRelease(bb.scope(),
bb.unsafeGetBase(),
offset(handle.skipAlignmentMaskCheck, bb, base, handle.alignmentMask),
convEndian(handle.be, value)));
}
}