//
//	goroutine    - stack traces of all current goroutines
//	heap         - a sampling of memory allocations of live objects
//	allocs       - a sampling of all past memory allocations
//	threadcreate - stack traces that led to the creation of new OS threads
//	block        - stack traces that led to blocking on synchronization primitives
//	mutex        - stack traces of holders of contended mutexes
//

	return nil
}

// validateStackStrings makes sure all the string references in
// the stack table are present in the string table.
func validateStackStrings(
	stacks *dataTable[stackID, stack],
	strings *dataTable[stringID, string],
	frames map[uint64]frame,
) error {
	var err error
	stacks.forEach(func(id stackID, stk stack) bool {
		for _, pc := range stk.pcs {
			frame, ok := frames[pc]
			if !ok {

		Type:  r.Name,
	}
}

func regionTopStackFrame(r *trace.UserRegionSummary) trace.StackFrame {
	var frame trace.StackFrame
	if r.Start != nil && r.Start.Stack() != trace.NoStack {
		r.Start.Stack().Frames(func(f trace.StackFrame) bool {
			frame = f
			return false
		})
	}
	return frame
}

type regionStats struct {
	regionFingerprint
	Histogram traceviewer.TimeHistogram
}

					ctx.G = id
					state.binding = ctx
				}
			} else if old.Executing() && !new.Executing() {
				if tr.Stack != ev.Stack() {
					// This is a case where the transition is happening to a goroutine that is also executing, so
					// these two stacks should always match.
					e.Errorf("StateTransition.Stack doesn't match Event.Stack")
				}
				ctx := state.binding
				if ctx != nil {
					if ctx.G != id {

}

func gFromSP(mp *m, sp uintptr) *g {
	if gp := mp.g0; gp != nil && gp.stack.lo < sp && sp < gp.stack.hi {
		return gp
	}
	if gp := mp.gsignal; gp != nil && gp.stack.lo < sp && sp < gp.stack.hi {
		return gp
	}
	if gp := mp.curg; gp != nil && gp.stack.lo < sp && sp < gp.stack.hi {
		return gp
	}
	return nil
}

func profileLoop() {

	}

	prof.signalLock.Store(0)
}

// addNonGo adds the non-Go stack trace to the profile.
// It is called from a non-Go thread, so we cannot use much stack at all,
// nor do anything that needs a g or an m.
// In particular, we can't call cpuprof.log.write.
// Instead, we copy the stack into cpuprof.extra,
// which will be drained the next time a Go thread
// gets the signal handling event.
//

	stksize    int64                // stack size for current frame
	stkptrsize int64                // prefix of stack containing pointers

	// alignment for current frame.
	// NOTE: when stkalign > PtrSize, currently this only ensures the offsets of
	// objects in the stack frame are aligned. The stack pointer is still aligned
	// only PtrSize.
	stkalign int64

		r.end = r.fset.Position(r.comment.End())
		r.index++
	}
}

// A nodeStack keeps track of nested nodes.
// A node lower on the stack lexically contains the nodes higher on the stack.
type nodeStack []Node

// push pops all nodes that appear lexically before n
// and then pushes n on the stack.
func (s *nodeStack) push(n Node) {
	s.pop(n.Pos())
	*s = append((*s), n)
}

	}

	return &sym
}

type WasmField struct {
	Type WasmFieldType
	// Offset holds the frame-pointer-relative locations for Go's stack-based
	// ABI. This is used by the src/cmd/internal/wasm package to map WASM
	// import parameters to the Go stack in a wrapper function.
	Offset int64
}

type WasmFieldType byte

const (
	WasmI32 WasmFieldType = iota
	WasmI64
	WasmF32
	WasmF64

//
// The stacks obtained from the hung child processes are in
// libSystem_atfork_child, which is supposed to reinitialize various
// parts of the C library in the new process.
//
// One common stack dies in _notify_fork_child calling _notify_globals
// (inlined) calling _os_alloc_once, because _os_alloc_once detects that
// the once lock is held by the parent process and then calls