@Override
public long getMemorySize(JavaConstant constant) {
if (constant.getJavaKind() == JavaKind.Object) {
HotSpotResolvedObjectType lookupJavaType = lookupJavaType(constant);
if (lookupJavaType == null) {
return 0;
} else {
if (lookupJavaType.isArray()) {
// TODO(tw): Add compressed pointer support.
int length = Array.getLength(((HotSpotObjectConstantImpl) constant).object());
ResolvedJavaType elementType = lookupJavaType.getComponentType();
JavaKind elementKind = elementType.getJavaKind();
final int headerSize = getArrayBaseOffset(elementKind);
TargetDescription target = runtime.getHostJVMCIBackend().getTarget();
int sizeOfElement = getArrayIndexScale(elementKind);
int alignment = target.wordSize;
int log2ElementSize = CodeUtil.log2(sizeOfElement);
return computeArrayAllocationSize(length, alignment, headerSize, log2ElementSize);
}
return lookupJavaType.instanceSize();
}
} else {
return constant.getJavaKind().getByteCount();
}
}
public DeoptimizationAction decodeDeoptAction(JavaConstant constant) {
HotSpotVMConfig config = runtime.getConfig();
int actionValue =
((~constant.asInt()) >> config.deoptimizationActionShift)
& intMaskRight(config.deoptimizationActionBits);
DeoptimizationAction action = convertDeoptAction(actionValue);
return action;
}
public DeoptimizationReason convertDeoptReason(int reason) {
HotSpotVMConfig config = runtime.getConfig();
if (reason == config.deoptReasonNone) {
return DeoptimizationReason.None;
}
if (reason == config.deoptReasonNullCheck) {
return DeoptimizationReason.NullCheckException;
}
if (reason == config.deoptReasonRangeCheck) {
return DeoptimizationReason.BoundsCheckException;
}
if (reason == config.deoptReasonClassCheck) {
return DeoptimizationReason.ClassCastException;
}
if (reason == config.deoptReasonArrayCheck) {
return DeoptimizationReason.ArrayStoreException;
}
if (reason == config.deoptReasonUnreached0) {
return DeoptimizationReason.UnreachedCode;
}
if (reason == config.deoptReasonTypeCheckInlining) {
return DeoptimizationReason.TypeCheckedInliningViolated;
}
if (reason == config.deoptReasonOptimizedTypeCheck) {
return DeoptimizationReason.OptimizedTypeCheckViolated;
}
if (reason == config.deoptReasonNotCompiledExceptionHandler) {
return DeoptimizationReason.NotCompiledExceptionHandler;
}
if (reason == config.deoptReasonUnresolved) {
return DeoptimizationReason.Unresolved;
}
if (reason == config.deoptReasonJsrMismatch) {
return DeoptimizationReason.JavaSubroutineMismatch;
}
if (reason == config.deoptReasonDiv0Check) {
return DeoptimizationReason.ArithmeticException;
}
if (reason == config.deoptReasonConstraint) {
return DeoptimizationReason.RuntimeConstraint;
}
if (reason == config.deoptReasonLoopLimitCheck) {
return DeoptimizationReason.LoopLimitCheck;
}
if (reason == config.deoptReasonAliasing) {
return DeoptimizationReason.Aliasing;
}
if (reason == config.deoptReasonTransferToInterpreter) {
return DeoptimizationReason.TransferToInterpreter;
}
throw new JVMCIError("%x", reason);
}
public ResolvedJavaMethod lookupJavaMethod(Executable reflectionMethod) {
try {
Class<?> holder = reflectionMethod.getDeclaringClass();
Field slotField =
reflectionMethod instanceof Constructor
? reflectionConstructorSlot
: reflectionMethodSlot;
final int slot = slotField.getInt(reflectionMethod);
return runtime.getCompilerToVM().getResolvedJavaMethodAtSlot(holder, slot);
} catch (IllegalArgumentException | IllegalAccessException e) {
throw new JVMCIError(e);
}
}
@Override
public JavaConstant encodeDeoptActionAndReason(
DeoptimizationAction action, DeoptimizationReason reason, int debugId) {
HotSpotVMConfig config = runtime.getConfig();
int actionValue = convertDeoptAction(action);
int reasonValue = convertDeoptReason(reason);
int debugValue = debugId & intMaskRight(config.deoptimizationDebugIdBits);
JavaConstant c =
JavaConstant.forInt(
~((debugValue << config.deoptimizationDebugIdShift)
| (reasonValue << config.deoptimizationReasonShift)
| (actionValue << config.deoptimizationActionShift)));
assert c.asInt() < 0;
return c;
}
public int convertDeoptAction(DeoptimizationAction action) {
HotSpotVMConfig config = runtime.getConfig();
switch (action) {
case None:
return config.deoptActionNone;
case RecompileIfTooManyDeopts:
return config.deoptActionMaybeRecompile;
case InvalidateReprofile:
return config.deoptActionReinterpret;
case InvalidateRecompile:
return config.deoptActionMakeNotEntrant;
case InvalidateStopCompiling:
return config.deoptActionMakeNotCompilable;
default:
throw new JVMCIError("%s", action);
}
}
public DeoptimizationAction convertDeoptAction(int action) {
HotSpotVMConfig config = runtime.getConfig();
if (action == config.deoptActionNone) {
return DeoptimizationAction.None;
}
if (action == config.deoptActionMaybeRecompile) {
return DeoptimizationAction.RecompileIfTooManyDeopts;
}
if (action == config.deoptActionReinterpret) {
return DeoptimizationAction.InvalidateReprofile;
}
if (action == config.deoptActionMakeNotEntrant) {
return DeoptimizationAction.InvalidateRecompile;
}
if (action == config.deoptActionMakeNotCompilable) {
return DeoptimizationAction.InvalidateStopCompiling;
}
throw new JVMCIError("%d", action);
}
public int convertDeoptReason(DeoptimizationReason reason) {
HotSpotVMConfig config = runtime.getConfig();
switch (reason) {
case None:
return config.deoptReasonNone;
case NullCheckException:
return config.deoptReasonNullCheck;
case BoundsCheckException:
return config.deoptReasonRangeCheck;
case ClassCastException:
return config.deoptReasonClassCheck;
case ArrayStoreException:
return config.deoptReasonArrayCheck;
case UnreachedCode:
return config.deoptReasonUnreached0;
case TypeCheckedInliningViolated:
return config.deoptReasonTypeCheckInlining;
case OptimizedTypeCheckViolated:
return config.deoptReasonOptimizedTypeCheck;
case NotCompiledExceptionHandler:
return config.deoptReasonNotCompiledExceptionHandler;
case Unresolved:
return config.deoptReasonUnresolved;
case JavaSubroutineMismatch:
return config.deoptReasonJsrMismatch;
case ArithmeticException:
return config.deoptReasonDiv0Check;
case RuntimeConstraint:
return config.deoptReasonConstraint;
case LoopLimitCheck:
return config.deoptReasonLoopLimitCheck;
case Aliasing:
return config.deoptReasonAliasing;
case TransferToInterpreter:
return config.deoptReasonTransferToInterpreter;
default:
throw new JVMCIError("%s", reason);
}
}
public ResolvedJavaField lookupJavaField(Field reflectionField) {
String name = reflectionField.getName();
Class<?> fieldHolder = reflectionField.getDeclaringClass();
Class<?> fieldType = reflectionField.getType();
// java.lang.reflect.Field's modifiers should be enough here since VM internal modifier bits
// are not used (yet).
final int modifiers = reflectionField.getModifiers();
final long offset =
Modifier.isStatic(modifiers)
? UNSAFE.staticFieldOffset(reflectionField)
: UNSAFE.objectFieldOffset(reflectionField);
HotSpotResolvedObjectType holder = fromObjectClass(fieldHolder);
JavaType type = runtime.fromClass(fieldType);
if (offset != -1) {
HotSpotResolvedObjectType resolved = holder;
return resolved.createField(name, type, offset, modifiers);
} else {
throw new JVMCIError("unresolved field %s", reflectionField);
}
}
public ResolvedJavaType lookupJavaType(Class<?> clazz) {
if (clazz == null) {
throw new IllegalArgumentException("Class parameter was null");
}
return runtime.fromClass(clazz);
}
public int decodeDebugId(JavaConstant constant) {
HotSpotVMConfig config = runtime.getConfig();
return ((~constant.asInt()) >> config.deoptimizationDebugIdShift)
& intMaskRight(config.deoptimizationDebugIdBits);
}