Examples with RVMField org.jikesrvm.classloader.RVMField used on opensource projects

Example 16 with RVMField

use of org.jikesrvm.classloader.RVMField in project JikesRVM by JikesRVM.

the class JNIFunctions method GetLongField.

/**
 * GetLongField:  read an instance field of type long
 * @param env A JREF index for the JNI environment object
 * @param objJREF a JREF index for the target object
 * @param fieldID the id for the RVMField that describes this field
 * @return the value of the long field or 0 if the fieldID is incorrect
 */
private static long GetLongField(JNIEnvironment env, int objJREF, int fieldID) {
    if (traceJNI)
        VM.sysWriteln("JNI called: GetLongField");
    RuntimeEntrypoints.checkJNICountDownToGC();
    try {
        Object obj = env.getJNIRef(objJREF);
        RVMField field = MemberReference.getFieldRef(fieldID).resolve();
        return field.getLongValueUnchecked(obj);
    } catch (Throwable unexpected) {
        if (traceJNI)
            unexpected.printStackTrace(System.err);
        env.recordException(unexpected);
        return 0L;
    }
}

Example 17 with RVMField

use of org.jikesrvm.classloader.RVMField in project JikesRVM by JikesRVM.

the class JNIFunctions method GetFloatField.

/**
 * GetFloatField:  read an instance field of type float
 * @param env A JREF index for the JNI environment object
 * @param objJREF a JREF index for the target object
 * @param fieldID the id for the RVMField that describes this field
 * @return the value of the float field or 0 if the fieldID is incorrect
 */
private static float GetFloatField(JNIEnvironment env, int objJREF, int fieldID) {
    if (traceJNI)
        VM.sysWriteln("JNI called: GetFloatField");
    RuntimeEntrypoints.checkJNICountDownToGC();
    try {
        Object obj = env.getJNIRef(objJREF);
        RVMField field = MemberReference.getFieldRef(fieldID).resolve();
        return field.getFloatValueUnchecked(obj);
    } catch (Throwable unexpected) {
        if (traceJNI)
            unexpected.printStackTrace(System.err);
        env.recordException(unexpected);
        return 0f;
    }
}

Example 18 with RVMField

use of org.jikesrvm.classloader.RVMField in project JikesRVM by JikesRVM.

the class JNIFunctions method SetDoubleField.

/**
 * SetDoubleField: set an instance field of type double
 * @param env A JREF index for the JNI environment object
 * @param objJREF a JREF index for the target object
 * @param fieldID the id for the RVMField that describes this field
 * @param value   double value to assign
 */
private static void SetDoubleField(JNIEnvironment env, int objJREF, int fieldID, double value) {
    if (traceJNI)
        VM.sysWriteln("JNI called: SetDoubleField");
    RuntimeEntrypoints.checkJNICountDownToGC();
    try {
        Object obj = env.getJNIRef(objJREF);
        RVMField field = MemberReference.getFieldRef(fieldID).resolve();
        field.setDoubleValueUnchecked(obj, value);
    } catch (Throwable unexpected) {
        if (traceJNI)
            unexpected.printStackTrace(System.err);
        env.recordException(unexpected);
    }
}

Example 19 with RVMField

use of org.jikesrvm.classloader.RVMField in project JikesRVM by JikesRVM.

the class JNIFunctions method SetStaticCharField.

/**
 * SetStaticCharField:  set a static field of type char
 * @param env A JREF index for the JNI environment object
 * @param classJREF a JREF index for the RVMClass object
 * @param fieldID the id for the RVMField that describes this field
 * @param fieldValue  The value to assign
 */
private static void SetStaticCharField(JNIEnvironment env, int classJREF, int fieldID, char fieldValue) {
    if (traceJNI)
        VM.sysWriteln("JNI called: SetStaticCharField");
    RuntimeEntrypoints.checkJNICountDownToGC();
    try {
        RVMField field = MemberReference.getFieldRef(fieldID).resolve();
        field.setCharValueUnchecked(null, fieldValue);
    } catch (Throwable unexpected) {
        if (traceJNI)
            unexpected.printStackTrace(System.err);
        env.recordException(unexpected);
    }
}

Example 20 with RVMField

use of org.jikesrvm.classloader.RVMField in project JikesRVM by JikesRVM.

the class JNIFunctions method SetStaticByteField.

/**
 * SetStaticByteField:  set a static field of type byte
 * @param env A JREF index for the JNI environment object
 * @param classJREF a JREF index for the RVMClass object
 * @param fieldID the id for the RVMField that describes this field
 * @param fieldValue the value to assign
 */
private static void SetStaticByteField(JNIEnvironment env, int classJREF, int fieldID, byte fieldValue) {
    if (traceJNI)
        VM.sysWriteln("JNI called: SetStaticByteField");
    RuntimeEntrypoints.checkJNICountDownToGC();
    try {
        RVMField field = MemberReference.getFieldRef(fieldID).resolve();
        field.setByteValueUnchecked(null, fieldValue);
    } catch (Throwable unexpected) {
        if (traceJNI)
            unexpected.printStackTrace(System.err);
        env.recordException(unexpected);
    }
}