MOVV	new+0(FP), R4
	MOVV	old+8(FP), R5
	MOVV	$SYS_sigaltstack, R11
	SYSCALL
	MOVW	$-4096, R5
	BGEU	R5, R4, 2(PC)
	MOVV	R0, 0xf1(R0)	// crash
	RET

// func osyield()
TEXT runtime·osyield(SB),NOSPLIT|NOFRAME,$0
	MOVV	$SYS_sched_yield, R11
	SYSCALL
	RET

// func sched_getaffinity(pid, len uintptr, buf *uintptr) int32
TEXT runtime·sched_getaffinity(SB),NOSPLIT|NOFRAME,$0

	return stdcall(fn)
}

// These must run on the system stack only.

//go:nosplit
func osyield_no_g() {
	stdcall_no_g(_SwitchToThread, 0, 0)
}

//go:nosplit
func osyield() {
	systemstack(func() {
		stdcall0(_SwitchToThread)
	})
}

//go:nosplit
func usleep_no_g(us uint32) {
	timeout := uintptr(us) / 1000 // ms units

		{"(*Union).Underlying", Method, 18},
		{"(*Var).Anonymous", Method, 5},
		{"(*Var).Embedded", Method, 11},
		{"(*Var).Exported", Method, 5},
		{"(*Var).Id", Method, 5},
		{"(*Var).IsField", Method, 5},
		{"(*Var).Name", Method, 5},
		{"(*Var).Origin", Method, 19},
		{"(*Var).Parent", Method, 5},
		{"(*Var).Pkg", Method, 5},
		{"(*Var).Pos", Method, 5},
		{"(*Var).String", Method, 5},

	//
	// The critical section on each goroutine here is going to be quite short, so the likelihood
	// that we observe a zero value is high.
	for trace.exitingSyscall.Load() != 0 {
		osyield()
	}

	// Record some initial pieces of information.
	//
	// N.B. This will also emit a status event for this goroutine.
	tl := traceAcquire()

			<-ch1
			ch2 <- 1
		}
	}()
	for i := 0; i < n; i++ {
		ch1 <- 1
		<-ch2
	}
}

func BenchmarkOsYield(b *testing.B) {
	for i := 0; i < b.N; i++ {
		runtime.OsYield()
	}
}

func BenchmarkRunningGoProgram(b *testing.B) {
	tmpdir := b.TempDir()

	src := filepath.Join(tmpdir, "main.go")
	err := os.WriteFile(src, []byte(benchmarkRunningGoProgram), 0666)

	// OK, it will be swept fairly soon.
	for {
		spangen := atomic.Load(&s.sweepgen)
		if spangen == sl.sweepGen || spangen == sl.sweepGen+3 {
			break
		}
		osyield()
	}
}

// sweep frees or collects finalizers for blocks not marked in the mark phase.
// It clears the mark bits in preparation for the next GC round.
// Returns true if the span was returned to heap.

t:"\f233"}.fa-servicestack:before{content:"\f3ec"}.fa-share:before{content:"\f064"}.fa-share-alt:before{content:"\f1e0"}.fa-share-alt-square:before{content:"\f1e1"}.fa-share-square:before{content:"\f14d"}.fa-shekel-sign:before{content:"\f20b"}.fa-shield-alt:before{content:"\f3ed"}.fa-ship:before{content:"\f21a"}.fa-shirtsinbulk:before{content:"\f214"}.fa-shopping-bag:before{content:"\f290"}.fa-shopping-basket:before{content:"\f291"}.fa-shopping-cart:before{content:"\f07a"}.fa-shower:before{conte...

	"shark":                                "\U0001f988",
	"shaved_ice":                           "\U0001f367",
	"sheep":                                "\U0001f411",
	"shell":                                "\U0001f41a",
	"shield":                               "\U0001f6e1\ufe0f",
	"shinto_shrine":                        "\u26e9\ufe0f",
	"ship":                                 "\U0001f6a2",
	"shirt":                                "\U0001f455",

		}
		if i == 0 {
			nextYield = nanotime() + yieldDelay
		}
		if nanotime() < nextYield {
			for x := 0; x < 10 && gp.atomicstatus.Load() != oldval; x++ {
				procyield(1)
			}
		} else {
			osyield()
			nextYield = nanotime() + yieldDelay/2
		}
	}

	if oldval == _Grunning {
		// Track every gTrackingPeriod time a goroutine transitions out of running.

content:"\f3ec"}.fa-shapes:before{content:"\f61f"}.fa-share:before{content:"\f064"}.fa-share-alt:before{content:"\f1e0"}.fa-share-alt-square:before{content:"\f1e1"}.fa-share-square:before{content:"\f14d"}.fa-shekel-sign:before{content:"\f20b"}.fa-shield-alt:before{content:"\f3ed"}.fa-ship:before{content:"\f21a"}.fa-shipping-fast:before{content:"\f48b"}.fa-shirtsinbulk:before{content:"\f214"}.fa-shoe-prints:before{content:"\f54b"}.fa-shopping-bag:before{content:"\f290"}.fa-shopping-basket:before{...