package trace

import "fmt"

// ThreadID is the runtime-internal M structure's ID. This is unique
// for each OS thread.
type ThreadID int64

// NoThread indicates that the relevant events don't correspond to any
// thread in particular.
const NoThread = ThreadID(-1)

// ProcID is the runtime-internal G structure's id field. This is unique
// for each P.
type ProcID int64

				// the states _Gidle or _Grunnable.
				it.extra = append(it.extra, Event{
					ctx: schedCtx{
						// G: GoID(gid),
						G: NoGoroutine,
						P: NoProc,
						M: NoThread,
					},
					table: it.evt,
					base: baseEvent{
						typ:  go122.EvGoStatus,
						time: Time(ev.Ts),
						args: timedEventArgs{uint64(gid), ^uint64(0), uint64(go122.GoRunnable)},
					},
				})

		tr := ev.StateTransition()
		if tr.Resource.Kind != trace.ResourceGoroutine {
			return false
		}
		from, to := tr.Goroutine()
		return from == trace.GoUndetermined && to == trace.GoSyscall
	}
	if m == trace.NoThread && !lenient() {
		e.Errorf("must have thread, but thread ID is none")
		return nil
	}
	s, ok := v.ms[m]
	if !ok {
		s = &schedContext{M: m, P: trace.NoProc, G: trace.NoGoroutine}
		v.ms[m] = s
		return s

			b.writeEventsTo(tw)
			b = g.newStructuralBatch()
		}
	}
	b.writeEventsTo(tw)
}

func (g *Generation) newStructuralBatch() *Batch {
	return &Batch{gen: g, thread: trace.NoThread}
}

// Batch represents an event batch.
type Batch struct {
	gen       *Generation
	thread    trace.ThreadID
	timestamp Time
	size      uint64
	events    []raw.Event
}

// it doesn't.
func validateCtx(ctx schedCtx, reqs event.SchedReqs) error {
	// Check thread requirements.
	if reqs.Thread == event.MustHave && ctx.M == NoThread {
		return fmt.Errorf("expected a thread but didn't have one")
	} else if reqs.Thread == event.MustNotHave && ctx.M != NoThread {
		return fmt.Errorf("expected no thread but had one")
	}

	// Check proc requirements.
	if reqs.Proc == event.MustHave && ctx.P == NoProc {

//
// Note that for thread state transitions this always refers to the
// state before the transition. For example, if a thread is just
// starting to run, then this will return NoThread.
//
// Note: tracking thread state is not currently supported, so this
// will always return a valid thread ID. However thread state transitions
// may be tracked in the future, and callers must be robust to this

Thread$/,/^CrGpuMain$/]);CATEGORY_THREAD_MAP.set('IO',[/IOThread/]);CATEGORY_THREAD_MAP.set('raster',[/CompositorTileWorker/]);CATEGORY_THREAD_MAP.set('renderer_compositor',[/^Compositor$/]);CATEGORY_THREAD_MAP.set('renderer_main',[/^CrRendererMain$/]);CATEGORY_THREAD_MAP.set('total_rendering',[/^Browser Compositor$/,/^Chrome_InProcGpuThread$/,/^Compositor$/,/CompositorTileWorker/,/^CrBrowserMain$/,/^CrGpuMain$/,/^CrRendererMain$/,/IOThread/,/^VizCompositorThread$/]);const ALL_CATEGORIES=[...CAT...