package main

import (
	"fmt"
	"internal/trace"
	"internal/trace/traceviewer"
	"internal/trace/traceviewer/format"
	"strings"
)

// resource is a generic constraint interface for resource IDs.
type resource interface {
	trace.GoID | trace.ProcID | trace.ThreadID
}

// noResource indicates the lack of a resource.
const noResource = -1

// gState represents the trace viewer state of a goroutine in a trace.
//

	b0.Event("GoStatus", trace.GoID(1), trace.ThreadID(0), go122.GoRunning)
	b0.Event("GoSyscallBegin", testgen.Seq(1), testgen.NoStack)
	b0.Event("GoSyscallEnd")
	b0.Event("GoSyscallBegin", testgen.Seq(2), testgen.NoStack)
	b0.Event("GoSyscallEndBlocked")

	// A running goroutine steals proc 0.
	b1 := g.Batch(trace.ThreadID(1), 0)
	b1.Event("ProcStatus", trace.ProcID(2), go122.ProcRunning)

import (
	"bytes"
	"fmt"
	"internal/trace/raw"
	"internal/trace/version"
	"io"
	"log"
	"os"
	"os/exec"
)

func main() {
	// Create command.
	var trace, stderr bytes.Buffer
	cmd := exec.Command("go", "run", "./testprog/main.go")
	cmd.Stdout = &trace
	cmd.Stderr = &stderr

	// Run trace program; the trace will appear in stdout.
	fmt.Fprintln(os.Stderr, "running trace program...")
	if err := cmd.Run(); err != nil {

package trace_test

import (
	"fmt"
	"log"
	"os"
	"runtime/trace"
)

// Example demonstrates the use of the trace package to trace
// the execution of a Go program. The trace output will be
// written to the file trace.out
func Example() {
	f, err := os.Create("trace.out")
	if err != nil {
		log.Fatalf("failed to create trace output file: %v", err)
	}
	defer func() {
		if err := f.Close(); err != nil {

package main

import (
	"internal/trace"
	"internal/trace/event/go122"
	testgen "internal/trace/internal/testgen/go122"
)

func main() {
	testgen.Main(gen)
}

func gen(t *testgen.Trace) {
	g := t.Generation(1)

	// A C thread calls into Go and acquires a P. It returns
	// back to C, destroying the G.
	b0 := g.Batch(trace.ThreadID(0), 0)
	b0.Event("GoCreateSyscall", trace.GoID(4))
	b0.Event("GoSyscallEndBlocked")

package testtrace

import (
	"errors"
	"fmt"
	"internal/trace"
	"slices"
	"strings"
)

// Validator is a type used for validating a stream of trace.Events.
type Validator struct {
	lastTs   trace.Time
	gs       map[trace.GoID]*goState
	ps       map[trace.ProcID]*procState
	ms       map[trace.ThreadID]*schedContext
	ranges   map[trace.ResourceID][]string
	tasks    map[trace.TaskID]string
	seenSync bool
	Go121    bool
}

	}

	// Beginning of traced execution.
	var wg sync.WaitGroup
	ctx, task := trace.NewTask(bgctx, "task0") // EvUserTaskCreate("task0")
	trace.StartRegion(ctx, "task0 region")

	wg.Add(1)
	go func() {
		defer wg.Done()
		defer task.End() // EvUserTaskEnd("task0")

		trace.StartRegion(ctx, "unended region")

		trace.WithRegion(ctx, "region0", func() {
			// EvUserRegionBegin("region0", start)

			g.Sync()
		case trace.EventStackSample:
			g.StackSample(ctx, ev)
		case trace.EventRangeBegin, trace.EventRangeActive, trace.EventRangeEnd:
			r := ev.Range()
			switch r.Scope.Kind {
			case trace.ResourceGoroutine:
				g.GoroutineRange(ctx, ev)
			case trace.ResourceProc:
				g.ProcRange(ctx, ev)
			case trace.ResourceNone:
				g.GlobalRange(ctx, ev)
			}
		case trace.EventMetric:
			g.GlobalMetric(ctx, ev)

    }

    public boolean isTraceEnabled() {
        return false;
    }

    public void trace(String msg) {}

    public void trace(String format, Object arg) {}

    public void trace(String format, Object arg1, Object arg2) {}

    public void trace(String format, Object... arguments) {}

    public void trace(String msg, Throwable t) {}

    public boolean isTraceEnabled(Marker marker) {
        return false;

		}
		// Pass the trace through MutatorUtilizationV2 and check it.
		check(t, trace.MutatorUtilizationV2(events, trace.UtilSTW|trace.UtilBackground|trace.UtilAssist))
	})
}

func mmuSlow(util []trace.MutatorUtil, window time.Duration) (mmu float64) {
	if max := time.Duration(util[len(util)-1].Time - util[0].Time); window > max {
		window = max
	}

	mmu = 1.0