Examples with ObjectReference org.vmmagic.unboxed.ObjectReference used on opensource projects

Example 71 with ObjectReference

use of org.vmmagic.unboxed.ObjectReference in project JikesRVM by JikesRVM.

the class Barriers method doubleFieldWrite.

/**
 * Barrier for writes of doubles into fields of instances (i.e. putfield).
 *
 * @param ref the object which is the subject of the putfield
 * @param value the new value for the field
 * @param offset the offset of the field to be modified
 * @param locationMetadata an int that encodes the source location being modified
 */
@Inline
@Entrypoint
public static void doubleFieldWrite(Object ref, double value, Offset offset, int locationMetadata) {
    if (NEEDS_DOUBLE_GC_WRITE_BARRIER) {
        ObjectReference src = ObjectReference.fromObject(ref);
        Selected.Mutator.get().doubleWrite(src, src.toAddress().plus(offset), value, offset.toWord(), Word.fromIntZeroExtend(locationMetadata), INSTANCE_FIELD);
    } else if (VM.VerifyAssertions)
        VM._assert(VM.NOT_REACHED);
}

Example 72 with ObjectReference

use of org.vmmagic.unboxed.ObjectReference in project JikesRVM by JikesRVM.

the class Barriers method charFieldWrite.

/**
 * Barrier for writes of chars into fields of instances (i.e. putfield).
 *
 * @param ref the object which is the subject of the putfield
 * @param value the new value for the field
 * @param offset the offset of the field to be modified
 * @param locationMetadata an int that encodes the source location being modified
 */
@Inline
@Entrypoint
public static void charFieldWrite(Object ref, char value, Offset offset, int locationMetadata) {
    if (NEEDS_CHAR_GC_WRITE_BARRIER) {
        ObjectReference src = ObjectReference.fromObject(ref);
        Selected.Mutator.get().charWrite(src, src.toAddress().plus(offset), value, offset.toWord(), Word.fromIntZeroExtend(locationMetadata), INSTANCE_FIELD);
    } else if (VM.VerifyAssertions)
        VM._assert(VM.NOT_REACHED);
}

Example 73 with ObjectReference

use of org.vmmagic.unboxed.ObjectReference in project JikesRVM by JikesRVM.

the class Barriers method objectStaticWrite.

/**
 * Barrier for writes of objects from statics (eg putstatic)
 *
 * @param value the new value to be stored
 * @param offset the offset of the field to be modified
 * @param locationMetadata an int that encodes the source location being modified
 */
@Inline
@Entrypoint
public static void objectStaticWrite(Object value, Offset offset, int locationMetadata) {
    if (NEEDS_OBJECT_GC_PUTSTATIC_BARRIER) {
        ObjectReference src = ObjectReference.fromObject(Magic.getJTOC());
        Selected.Mutator.get().objectReferenceNonHeapWrite(src.toAddress().plus(offset), ObjectReference.fromObject(value), offset.toWord(), Word.fromIntZeroExtend(locationMetadata));
    } else if (VM.VerifyAssertions)
        VM._assert(VM.NOT_REACHED);
}

Example 74 with ObjectReference

use of org.vmmagic.unboxed.ObjectReference in project JikesRVM by JikesRVM.

the class DebugUtil method validRef.

@Uninterruptible
public static boolean validRef(ObjectReference ref) {
    if (ref.isNull())
        return true;
    if (!Space.isMappedObject(ref)) {
        VM.sysWrite("validRef: REF outside heap, ref = ");
        VM.sysWrite(ref);
        VM.sysWriteln();
        Space.printVMMap();
        return false;
    }
    if (MOVES_OBJECTS) {
    /*
      TODO: Work out how to check if forwarded
      if (Plan.isForwardedOrBeingForwarded(ref)) {
        // TODO: actually follow forwarding pointer
        // (need to bound recursion when things are broken!!)
        return true;
      }
      */
    }
    TIB tib = ObjectModel.getTIB(ref);
    Address tibAddr = Magic.objectAsAddress(tib);
    if (!Space.isMappedObject(ObjectReference.fromObject(tib))) {
        VM.sysWrite("validRef: TIB outside heap, ref = ");
        VM.sysWrite(ref);
        VM.sysWrite(" tib = ");
        VM.sysWrite(tibAddr);
        VM.sysWriteln();
        ObjectModel.dumpHeader(ref);
        return false;
    }
    if (tibAddr.isZero()) {
        VM.sysWrite("validRef: TIB is Zero! ");
        VM.sysWrite(ref);
        VM.sysWriteln();
        ObjectModel.dumpHeader(ref);
        return false;
    }
    if (tib.length() == 0) {
        VM.sysWrite("validRef: TIB length zero, ref = ");
        VM.sysWrite(ref);
        VM.sysWrite(" tib = ");
        VM.sysWrite(tibAddr);
        VM.sysWriteln();
        ObjectModel.dumpHeader(ref);
        return false;
    }
    ObjectReference type = ObjectReference.fromObject(tib.getType());
    if (!validType(type)) {
        VM.sysWrite("validRef: invalid TYPE, ref = ");
        VM.sysWrite(ref);
        VM.sysWrite(" tib = ");
        VM.sysWrite(Magic.objectAsAddress(tib));
        VM.sysWrite(" type = ");
        VM.sysWrite(type);
        VM.sysWriteln();
        ObjectModel.dumpHeader(ref);
        return false;
    }
    return true;
}