*/
public class InternalStackTraceClassifier implements StackTraceClassifier {

    @Nullable
    @Override
    public StackTraceRelevance classify(StackTraceElement frame) {
        return isInternal(frame.getClassName()) ? StackTraceRelevance.INTERNAL : null;
    }

    private static boolean isInternal(String className) {
        // JDK calls
        return className.startsWith("java.") ||

		return false
	}

	switch status := sigctxtStatus(ctxt); status {
	case 0:
		// Frame is ready. Copy the arguments to the frame and to registers.
		// Call the debug function.
		h.debugCallRun(ctxt)
	case 1:
		// Function returned. Copy frame and result registers back out.
		h.debugCallReturn(ctxt)
	case 2:
		// Function panicked. Copy panic out.
		h.debugCallPanicOut(ctxt)

// The backprop loop counter and main backprop loop run in their own execution
// frame (conceptually, the main forward loop and forward loop counter run
// together in a frame, then the backprop loop counter and backprop loop run
// together in a different frame). This returns the frame name to use for the
// backprop while loops.
// TODO(skyewm): make sure this is unique among existing frame names
string BackPropFrameName(const string& forward_frame_name) {

// Package framepointer defines an Analyzer that reports assembly code
// that clobbers the frame pointer before saving it.
package framepointer

import (
	"go/build"
	"regexp"
	"strings"

	"golang.org/x/tools/go/analysis"
	"golang.org/x/tools/go/analysis/passes/internal/analysisutil"
)

const Doc = "report assembly that clobbers the frame pointer before saving it"

var Analyzer = &analysis.Analyzer{
	Name: "framepointer",

// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package trace

// Frame is a frame in stack traces.
type Frame struct {
	PC   uint64
	Fn   string
	File string
	Line int
}

const (
	// Special P identifiers:
	FakeP    = 1000000 + iota
	TimerP   // depicts timer unblocks
	NetpollP // depicts network unblocks

	if err != nil {
		return Event{}, err
	}
	if spec.IsStack {
		len := int(args[1])
		for i := 0; i < len; i++ {
			// Each stack frame has four args: pc, func ID, file ID, line number.
			frame, err := r.readArgs(4)
			if err != nil {
				return Event{}, err
			}
			args = append(args, frame...)
		}
	}
	var data []byte
	if spec.HasData {
		data, err = r.readData()
		if err != nil {
			return Event{}, err
		}
	}

        this.classifiers = ImmutableList.copyOf(classifiers);
    }

    @Nullable
    @Override
    public StackTraceRelevance classify(StackTraceElement frame) {
        for (StackTraceClassifier classifier : classifiers) {
            StackTraceRelevance relevance = classifier.classify(frame);
            if (relevance != null) {
                return relevance;
            }
        }
        return null;
    }

	// Save callback register arguments R0-R7.
	// We do this at the top of the frame so they're contiguous with stack arguments.
	// The 7*8 setting up R14 looks like a bug but is not: the eighth word
	// is the space the assembler reserved for our caller's frame pointer,
	// but we are not called from Go so that space is ours to use,
	// and we must to be contiguous with the stack arguments.

// threads to call into Go from different stacks without crashing due to g0
// stack bounds checks.
//
// N.B. This is only OK for threads created in C. Threads with Go frames up the
// stack must not change the stack out from under us.
func StackSwitchCallback() {
	C.callStackSwitchCallbackFromThread()

	fmt.Printf("OK\n")

class WindowCounter(
  val streamId: Int,
) {
  /** The total number of bytes consumed. */
  var total: Long = 0L
    private set

  /** The total number of bytes acknowledged by outgoing `WINDOW_UPDATE` frames. */
  var acknowledged: Long = 0L
    private set

  val unacknowledged: Long
    @Synchronized get() = total - acknowledged

  @Synchronized
  fun update(
    total: Long = 0,
    acknowledged: Long = 0,