// This file implements conversion from old (Go 1.11–Go 1.21) traces to the Go
// 1.22 format.
//
// Most events have direct equivalents in 1.22, at worst requiring arguments to
// be reordered. Some events, such as GoWaiting need to look ahead for follow-up
// events to determine the correct translation. GoSyscall, which is an
// instantaneous event, gets turned into a 1 ns long pair of

G_SCANRUNNABLE = G_SCAN+G_RUNNABLE
G_SCANRUNNING = G_SCAN+G_RUNNING
G_SCANSYSCALL = G_SCAN+G_SYSCALL
G_SCANWAITING = G_SCAN+G_WAITING

sts = {
    G_IDLE: 'idle',
    G_RUNNABLE: 'runnable',
    G_RUNNING: 'running',
    G_SYSCALL: 'syscall',
    G_WAITING: 'waiting',
    G_MORIBUND_UNUSED: 'moribund',
    G_DEAD: 'dead',
    G_ENQUEUE_UNUSED: 'enqueue',
    G_COPYSTACK: 'copystack',

				}
				s.gs[g.ID] = g
			case GoRunning:
				// Record execution time as we transition out of running
				g.ExecTime += ev.Time().Sub(g.lastStartTime)
				g.lastStartTime = 0
			case GoWaiting:
				// Record block time as we transition out of waiting.
				if g.lastBlockTime != 0 {
					g.BlockTimeByReason[g.lastBlockReason] += ev.Time().Sub(g.lastBlockTime)
					g.lastBlockTime = 0
				}

	return makeComputePprofFunc(trace.GoWaiting, func(reason string) bool {
		return reason == "network"
	})
}

// computePprofBlock returns a computePprofFunc that generates blocking pprof-like profile
// (time spent blocked on synchronization primitives).
func computePprofBlock() computePprofFunc {
	return makeComputePprofFunc(trace.GoWaiting, func(reason string) bool {

	go122.EvGoroutineStackFree:  EventExperimental,
	evSync:                      EventSync,
}

var go122GoStatus2GoState = [...]GoState{
	go122.GoRunnable: GoRunnable,
	go122.GoRunning:  GoRunning,
	go122.GoWaiting:  GoWaiting,
	go122.GoSyscall:  GoSyscall,
}

var go122ProcStatus2ProcState = [...]ProcState{
	go122.ProcRunning:          ProcRunning,
	go122.ProcIdle:             ProcIdle,

type GoStatus uint8

const (
	GoBad GoStatus = iota
	GoRunnable
	GoRunning
	GoSyscall
	GoWaiting
)

func (s GoStatus) String() string {
	switch s {
	case GoRunnable:
		return "Runnable"
	case GoRunning:
		return "Running"
	case GoSyscall:
		return "Syscall"
	case GoWaiting:
		return "Waiting"
	}
	return "Bad"
}

type ProcStatus uint8

const (

}

// GoUnpark emits a GoUnblock event.
func (tl traceLocker) GoUnpark(gp *g, skip int) {
	// Emit a GoWaiting status if necessary for the unblocked goroutine.
	w := tl.eventWriter(traceGoRunning, traceProcRunning)
	// Careful: don't use the event writer. We never want status or in-progress events
	// to trigger more in-progress events.

				continue
			}
			id := st.Resource.Goroutine()
			state, ok := gs[id]
			if !ok {
				continue
			}
			_, new := st.Goroutine()
			switch state {
			case entered:
				if new == trace.GoWaiting {
					state = blocked
				} else {
					state = entered
				}
			case blocked:
				if new == trace.GoRunnable {
					state = runnable
				} else {
					state = entered
				}

                    condition.signalAll();
                }
            } finally {
                lock.unlock();
            }
        }

        @VisibleForTesting
        boolean isWaiting() {
            lock.lock();
            try {
                return waiting > 0;
            } finally {
                lock.unlock();
            }
        }
    }

	syscall struct {
		time   trace.Time
		stack  trace.Stack
		active bool
	}

	// startBlockReason is the StateTransition.Reason of the most recent
	// event that caused a goroutine to transition to GoWaiting.
	startBlockReason string

	// startCause is the event that allowed this goroutine to start running.
	// It's used to generate flow events. This is typically something like
	// an unblock event or a goroutine creation event.