EvGoStartLabel      = 41 // goroutine starts running with label [timestamp, goroutine id, seq, label string id]
	EvGoBlockGC         = 42 // goroutine blocks on GC assist [timestamp, stack]
	EvGCMarkAssistStart = 43 // GC mark assist start [timestamp, stack]
	EvGCMarkAssistDone  = 44 // GC mark assist done [timestamp]
	EvUserTaskCreate    = 45 // trace.NewTask [timestamp, internal task id, internal parent id, name string, stack]

     * <groupId>:<artifactId>:<version>} but some of these coordinates may still be unknown at the point the exception
     * is thrown so this information is merely meant to assist the user.
     *
     * @return the identifier of the project or an empty string if not known, never {@code null}
     */
    @Nonnull
    String getProjectId();

    /**

	EvGCSweepEnd         // GC sweep done [timestamp, swept bytes, reclaimed bytes]
	EvGCMarkAssistActive // GC mark assist active [timestamp, goroutine ID]
	EvGCMarkAssistBegin  // GC mark assist start [timestamp, stack ID]
	EvGCMarkAssistEnd    // GC mark assist done [timestamp]
	EvHeapAlloc          // gcController.heapLive change [timestamp, heap alloc in bytes]

		// (i.e. the G has been blocked in a syscall).
		gs.syscallBegin(start, goID, ev.Stack())
	}

	// Note down the goroutine transition.
	_, inMarkAssist := gs.activeRanges["GC mark assist"]
	ctx.GoroutineTransition(ctx.elapsed(ev.Time()), viewerGState(from, inMarkAssist), viewerGState(to, inMarkAssist))
}

func (g *goroutineGenerator) ProcRange(ctx *traceContext, ev *trace.Event) {

			hasSyncBlockTime = true
		}
		if dt, ok := summary.RangeTime["GC mark assist"]; ok && dt > 0 {
			hasGCMarkAssistTime = true
		}
	}
	if !hasSchedWaitTime {
		t.Error("missing sched wait time")
	}
	if !hasSyncBlockTime {
		t.Error("missing sync block time")
	}
	if !hasGCMarkAssistTime {
		t.Error("missing GC mark assist time")
	}
}

func TestSummarizeGoroutinesRegionsTrace(t *testing.T) {

	// Per-G GC state

	// gcAssistBytes is this G's GC assist credit in terms of
	// bytes allocated. If this is positive, then the G has credit
	// to allocate gcAssistBytes bytes without assisting. If this
	// is negative, then the G must correct this by performing
	// scan work. We track this in bytes to make it fast to update
	// and check for debt in the malloc hot path. The assist ratio
	// determines how this corresponds to scan work debt.

					// If the goroutine isn't executing, then the fact that it was in mark
					// assist doesn't actually count.
					break
				}
				// This G has been in a mark assist *and running on its P* since the start
				// of the trace.
				fallthrough
			case handleSweep(r):
				// This P has been in sweep (or mark assist, from above) in the start of the trace.
				//

		// (i.e. the G has been blocked in a syscall).
		gs.syscallBegin(start, ev.Thread(), ev.Stack())
	}

	// Note down the goroutine transition.
	_, inMarkAssist := gs.activeRanges["GC mark assist"]
	ctx.GoroutineTransition(ctx.elapsed(ev.Time()), viewerGState(from, inMarkAssist), viewerGState(to, inMarkAssist))
}

func (g *threadGenerator) ProcTransition(ctx *traceContext, ev *trace.Event) {

	HasLDISP  bool // long (20-bit) displacements [mandatory]
	HasEIMM   bool // 32-bit immediates [mandatory]
	HasDFP    bool // decimal floating point
	HasETF3EH bool // ETF-3 enhanced
	HasMSA    bool // message security assist (CPACF)
	HasAES    bool // KM-AES{128,192,256} functions
	HasAESCBC bool // KMC-AES{128,192,256} functions
	HasAESCTR bool // KMCTR-AES{128,192,256} functions
	HasAESGCM bool // KMA-GCM-AES{128,192,256} functions

	if from == trace.GoSyscall && didNotBlock {
		gs.syscallEnd(ev.Time(), false, ctx)
		delete(g.inSyscall, ev.Proc())
	}

	// Note down the goroutine transition.
	_, inMarkAssist := gs.activeRanges["GC mark assist"]
	ctx.GoroutineTransition(ctx.elapsed(ev.Time()), viewerGState(from, inMarkAssist), viewerGState(to, inMarkAssist))
}

func (g *procGenerator) ProcTransition(ctx *traceContext, ev *trace.Event) {