mux.HandleFunc("/goroutines", GoroutinesHandlerFunc(parsed.summary.Goroutines))
	mux.HandleFunc("/goroutine", GoroutineHandler(parsed.summary.Goroutines))

	// MMU handler.
	mux.HandleFunc("/mmu", traceviewer.MMUHandlerFunc(ranges, mutatorUtil))

	// Basic pprof endpoints.
	mux.HandleFunc("/io", traceviewer.SVGProfileHandlerFunc(pprofByGoroutine(computePprofIO(), parsed)))

	"fmt"
	"internal/trace"
	"log"
	"math"
	"net/http"
	"strconv"
	"strings"
	"sync"
	"time"
)

type MutatorUtilFunc func(trace.UtilFlags) ([][]trace.MutatorUtil, error)

func MMUHandlerFunc(ranges []Range, f MutatorUtilFunc) http.HandlerFunc {
	mmu := &mmu{
		cache:  make(map[trace.UtilFlags]*mmuCacheEntry),
		f:      f,
		ranges: ranges,
	}
	return func(w http.ResponseWriter, r *http.Request) {