Examples of org.jnode.vm.VmStackFrame

org.jnode.vm.VmStackFrame
A VmFrame is the execution frame (locals & stack) for a method during execution. Note that this class is not meant to be a normal java class, instead it is a record structure that maps directly on how a method frame is push on the stack by the compiler. Don't add any methods, since during runtime instances of this class will have no header and thus no virtual method table.


        // skip the first element which is VMThrowable.fillInStackTrace() ...
        // unless this is a system exception 
        int i = inSystemException ? 0 : 1;
        while (i < cnt) {
            final VmStackFrame f = mt[i];
            if (f == null) {
                break;
            }
            final VmMethod method = f.getMethod();
            if (method == null) {
                break;
            }
            final VmType<?> vmClass = method.getDeclaringClass();
            if (vmClass == null) {

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        return ((Object[]) ObjectReference.fromObject(instance).toAddress().add(BACKTRACE_OFFSET).
                loadObjectReference().toObject()).length;
    }


    private static StackTraceElement getStackTraceElement(Throwable instance, int index) {
        final VmStackFrame frame = (VmStackFrame) ((Object[]) ObjectReference.fromObject(instance).toAddress().add(BACKTRACE_OFFSET).
                loadObjectReference().toObject())[index];
        final String location = frame.getLocationInfo();
        final int lineNumber = "?".equals(location) ? -1 : Integer.parseInt(location);
        final VmMethod method = frame.getMethod();
        final VmType<?> vmClass = (method == null) ? null : method.getDeclaringClass();
        final String fname = (vmClass == null) ? null : vmClass.getSourceFile();
        final String cname = (vmClass == null) ? "<unknown class>" : vmClass.getName();
        final String mname = (method == null) ? "<unknown method>" : method.getName();
        return new StackTraceElement(cname, mname, fname, method == null || method.isNative() ? -2 : lineNumber);

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    static StackTraceElement[] backTrace2stackTrace(Object[] backtrace) {
        final VmStackFrame[] vm_trace = (VmStackFrame[]) backtrace;
        final int length = vm_trace.length;
        final StackTraceElement[] trace = new StackTraceElement[length];
        for(int i = length; i-- > 0; ){
            final VmStackFrame frame = vm_trace[i];
            final String location = frame.getLocationInfo();
            final int lineNumber = "?".equals(location) ? -1 : Integer.parseInt(location);
            final VmMethod method = frame.getMethod();
            final VmType<?> vmClass = (method == null) ? null : method.getDeclaringClass();
            final String fname = (vmClass == null) ? null : vmClass.getSourceFile();
            final String cname = (vmClass == null) ? "<unknown class>" : vmClass.getName();
            final String mname = (method == null) ? "<unknown method>" : method.getName();
            trace[i] = new StackTraceElement(cname, mname, fname, method == null || method.isNative() ? -2 : lineNumber);

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Related Classes of org.jnode.vm.VmStackFrame

org.jnode.vm.classmgr.VmByteCode

org.jnode.vm.classmgr.VmMethod

org.jnode.vm.scheduler.VmThread

java.lang.NativeThrowable

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