return &lengthDelimitedFrameReader{r: r}
}

// Read attempts to read an entire frame into data. If that is not possible, io.ErrShortBuffer
// is returned and subsequent calls will attempt to read the last frame. A frame is complete when
// err is nil.
func (r *lengthDelimitedFrameReader) Read(data []byte) (int, error) {
	if r.remaining <= 0 {
		header := [4]byte{}

	MOVV	R25, R5
	JAL	·moveMakeFuncArgPtrs<ABIInternal>(SB)
	MOVV	32(R3), REGCTXT // restore REGCTXT
	MOVV	REGCTXT, 8(R3)
	MOVV	$argframe+0(FP), R20
	MOVV	R20, 16(R3)
	MOVB	R0, LOCAL_RETVALID(R3)
	ADDV	$LOCAL_RETVALID, R3, R20
	MOVV	R20, 24(R3)
	ADDV	$LOCAL_REGARGS, R3, R20
	MOVV	R20, 32(R3) // frame size to 32+SP as callreflect args)
	JAL	·callMethod(SB)
	ADDV	$LOCAL_REGARGS, R3, R25 // unspillArgs using R25

	MOVL	$0, (12+callbackArgs_result)(SP)	// result
	LEAL	12(SP), AX	// AX = &callbackArgs{...}

	// Call cgocallback, which will call callbackWrap(frame).
	MOVL	$0, 8(SP)	// context
	MOVL	AX, 4(SP)	// frame (address of callbackArgs)
	LEAL	·callbackWrap(SB), AX
	MOVL	AX, 0(SP)	// PC of function to call
	CALL	runtime·cgocallback(SB)

	// Get callback result.

	"dd",
	"details",
	"dialog",
	"dir",
	"div",
	"dl",
	"dt",
	"fieldset",
	"figcaption",
	"figure",
	"footer",
	"form",
	"frame",
	"frameset",
	"h1",
	"h2",
	"h3",
	"h4",
	"h5",
	"h6",
	"head",
	"header",
	"hr",
	"html",
	"iframe",
	"legend",
	"li",
	"link",
	"main",
	"menu",
	"menuitem",
	"nav",
	"noframes",
	"ol",
	"optgroup",
	"option",
	"p",

        Map<String, String> childUrlRuleMap = newHashMap();
        childUrlRuleMap.put("//A", "href");
        childUrlRuleMap.put("//AREA", "href");
        childUrlRuleMap.put("//FRAME", "src");
        childUrlRuleMap.put("//IFRAME", "src");
        childUrlRuleMap.put("//IMG", "src");
        childUrlRuleMap.put("//LINK", "href");
        childUrlRuleMap.put("//SCRIPT", "src");

        events.contains([profile: "build ':' state", type: "O", frame: ":sub:ok"])
        events.contains([profile: "build ':' state", type: "C", frame: ":sub:ok"])

        and: "task type frame follows task path frame follows LocalTaskNode frame"
        def firstTaskNodeIndex = events.findIndexOf { it.frame == LocalTaskNode.name }
        firstTaskNodeIndex > 0

	for _, rec := range prof {
		var sloc []*profile.Location
		for _, frame := range rec.Stack {
			loc := locs[frame.PC]
			if loc == nil {
				fn := funcs[frame.File+frame.Fn]
				if fn == nil {
					fn = &profile.Function{
						ID:         uint64(len(p.Function) + 1),
						Name:       frame.Fn,
						SystemName: frame.Fn,
						Filename:   frame.File,
					}
					p.Function = append(p.Function, fn)

}

// An inlineUnwinder iterates over the stack of inlined calls at a PC by
// decoding the inline table. The last step of iteration is always the frame of
// the physical function, so there's always at least one frame.
//
// This is typically used as:
//
//	for u, uf := newInlineUnwinder(...); uf.valid(); uf = u.next(uf) { ... }
//

    private
    var nextSequenceNumber = 0L

    override fun open(frame: String) {
        log(frame, 'O')
    }

    override fun close(frame: String) {
        log(frame, 'C')
    }

    private
    fun log(frame: String, openOrClose: Char) {
        logger.log(
            level,
            """{"profile":"$profile","type":"$openOrClose","frame":"$frame","at":${writePosition()},"sn":${nextSequenceNumber()}}"""
        )

		return nil, fmt.Errorf("unexpected addr2line output: %s", resp)
	}

	var stack []plugin.Frame
	for {
		frame, end := d.readFrame()
		if end {
			break
		}

		if frame != (plugin.Frame{}) {
			stack = append(stack, frame)
		}
	}
	return stack, err
}

// addrInfo returns the stack frame information for a specific program
// address. It returns nil if the address could not be identified.