Examples with HybridLayout com.oracle.svm.hosted.config.HybridLayout used on opensource projects

Example 1 with HybridLayout

use of com.oracle.svm.hosted.config.HybridLayout in project graal by oracle.

the class NativeImageHeap method choosePartition.

/**
 * Choose a partition of the native image heap for the given object.
 */
private HeapPartition choosePartition(final Object candidate, final boolean immutableArg) {
    final HostedType type = getMetaAccess().lookupJavaType(candidate.getClass());
    assert type.getWrapped().isInstantiated() : type;
    boolean written = false;
    boolean references = false;
    boolean immutable = immutableArg;
    if (type.isInstanceClass()) {
        final HostedInstanceClass clazz = (HostedInstanceClass) type;
        if (HybridLayout.isHybrid(clazz)) {
            final HybridLayout<?> hybridLayout = new HybridLayout<>(clazz, layout);
            final HostedField arrayField = hybridLayout.getArrayField();
            written |= arrayField.isWritten();
            final JavaKind arrayKind = hybridLayout.getArrayElementKind();
            references |= arrayKind.isObject();
        }
        // Aggregate over all the fields of the instance.
        for (HostedField field : clazz.getInstanceFields(true)) {
            /*
                 * Any field that is written says the instance is written. Except that if the field
                 * is final, it will only be written during initialization during native image
                 * construction, but will not be written in the running image.
                 */
            written |= field.isWritten() && !field.isFinal();
            references |= field.getType().getStorageKind().isObject();
        }
        // If the type has a monitor field, it has a reference field that is written.
        if (clazz.getMonitorFieldOffset() != 0) {
            written = true;
            references = true;
            immutable = false;
        }
    } else if (type.isArray()) {
        HostedArrayClass clazz = (HostedArrayClass) type;
        // TODO: How to know if any of the array elements are written?
        written = true;
        JavaKind kind = clazz.getComponentType().getJavaKind();
        references = kind.isObject();
    } else {
        throw shouldNotReachHere();
    }
    if (SubstrateOptions.UseOnlyWritableBootImageHeap.getValue()) {
        assert !spawnIsolates();
        // Emergency use only! Alarms will sound!
        return writableReference;
    }
    if (!written || immutable) {
        return references ? readOnlyReference : readOnlyPrimitive;
    } else {
        return references ? writableReference : writablePrimitive;
    }
}

Example 2 with HybridLayout

use of com.oracle.svm.hosted.config.HybridLayout in project graal by oracle.

the class UniverseBuilder method buildHubs.

private void buildHubs() {
    ReferenceMapEncoder referenceMapEncoder = new ReferenceMapEncoder();
    Map<HostedType, ReferenceMapEncoder.Input> referenceMaps = new HashMap<>();
    for (HostedType type : hUniverse.orderedTypes) {
        ReferenceMapEncoder.Input referenceMap = createReferenceMap(type);
        referenceMaps.put(type, referenceMap);
        referenceMapEncoder.add(referenceMap);
    }
    ImageSingletons.lookup(DynamicHubSupport.class).setData(referenceMapEncoder.encodeAll(null));
    ObjectLayout ol = ConfigurationValues.getObjectLayout();
    for (HostedType type : hUniverse.orderedTypes) {
        int layoutHelper;
        int monitorOffset = 0;
        int hashCodeOffset = 0;
        if (type.isInstanceClass()) {
            HostedInstanceClass instanceClass = (HostedInstanceClass) type;
            if (instanceClass.isAbstract()) {
                layoutHelper = LayoutEncoding.forAbstract();
            } else if (HybridLayout.isHybrid(type)) {
                HybridLayout<?> hybridLayout = new HybridLayout<>(instanceClass, ol);
                JavaKind kind = hybridLayout.getArrayElementKind();
                layoutHelper = LayoutEncoding.forArray(kind == JavaKind.Object, hybridLayout.getArrayBaseOffset(), ol.getArrayIndexShift(kind), ol.getAlignment());
            } else {
                layoutHelper = LayoutEncoding.forInstance(ConfigurationValues.getObjectLayout().alignUp(instanceClass.getInstanceSize()));
            }
            monitorOffset = instanceClass.getMonitorFieldOffset();
            hashCodeOffset = instanceClass.getHashCodeFieldOffset();
        } else if (type.isArray()) {
            JavaKind kind = type.getComponentType().getStorageKind();
            layoutHelper = LayoutEncoding.forArray(kind == JavaKind.Object, ol.getArrayBaseOffset(kind), ol.getArrayIndexShift(kind), ol.getAlignment());
            hashCodeOffset = ol.getArrayHashCodeOffset();
        } else if (type.isInterface()) {
            layoutHelper = LayoutEncoding.forInterface();
        } else if (type.isPrimitive()) {
            layoutHelper = LayoutEncoding.forPrimitive();
        } else {
            throw shouldNotReachHere();
        }
        /*
             * The vtable entry values are available only after the code cache layout is fixed, so
             * leave them 0.
             */
        CFunctionPointer[] vtable = new CFunctionPointer[type.vtable.length];
        for (int idx = 0; idx < type.vtable.length; idx++) {
            /*
                 * We install a CodePointer in the vtable; when generating relocation info, we will
                 * know these point into .text
                 */
            vtable[idx] = MethodPointer.factory(type.vtable[idx]);
        }
        // pointer maps in Dynamic Hub
        ReferenceMapEncoder.Input referenceMap = referenceMaps.get(type);
        assert referenceMap != null;
        long referenceMapIndex = referenceMapEncoder.lookupEncoding(referenceMap);
        DynamicHub hub = type.getHub();
        hub.setData(layoutHelper, type.getTypeID(), monitorOffset, hashCodeOffset, type.getAssignableFromMatches(), type.instanceOfBits, vtable, referenceMapIndex, type.isInstantiated());
    }
}