*mask |= 1 << (uint32(i) - 1)
}

func sigdelset(mask *sigset, i int) {
	*mask &^= 1 << (uint32(i) - 1)
}

func setProcessCPUProfiler(hz int32) {
	setProcessCPUProfilerTimer(hz)
}

func setThreadCPUProfiler(hz int32) {
	setThreadCPUProfilerHz(hz)
}

//go:nosplit
func validSIGPROF(mp *m, c *sigctxt) bool {
	return true
}

//go:linkname executablePath os.executablePath

	}

	// No active per-thread timer means the only valid profiler is setitimer.
	return setitimer
}

func setProcessCPUProfiler(hz int32) {
	setProcessCPUProfilerTimer(hz)
}

func setThreadCPUProfiler(hz int32) {
	mp := getg().m
	mp.profilehz = hz

	// destroy any active timer
	if mp.profileTimerValid.Load() {
		timerid := mp.profileTimer
		mp.profileTimerValid.Store(false)

	mask.__sigbits[(i-1)/32] &^= 1 << ((uint32(i) - 1) & 31)
}

//go:nosplit
func (c *sigctxt) fixsigcode(sig uint32) {
}

func setProcessCPUProfiler(hz int32) {
	setProcessCPUProfilerTimer(hz)
}

func setThreadCPUProfiler(hz int32) {
	setThreadCPUProfilerHz(hz)
}

//go:nosplit
func validSIGPROF(mp *m, c *sigctxt) bool {
	return true
}

//go:nosplit
func semacreate(mp *m) {

(S(LD|RD|RAD|LW|RW|RAW) x (ANDWconst [c] y)) && c&63 == 63
  => (S(LD|RD|RAD|LW|RW|RAW) x y)
(SLD  x (MOV(W|H|B|WZ|HZ|BZ)reg y)) => (SLD  x y)
(SRD  x (MOV(W|H|B|WZ|HZ|BZ)reg y)) => (SRD  x y)
(SRAD x (MOV(W|H|B|WZ|HZ|BZ)reg y)) => (SRAD x y)
(SLW  x (MOV(W|H|B|WZ|HZ|BZ)reg y)) => (SLW  x y)
(SRW  x (MOV(W|H|B|WZ|HZ|BZ)reg y)) => (SRW  x y)
(SRAW x (MOV(W|H|B|WZ|HZ|BZ)reg y)) => (SRAW x y)

// Match rotate by constant.

fr: français
fy: Frysk
ga: Gaeilge
gd: Gàidhlig
gl: galego
gu: ગુજરાતી
gv: Gaelg
ha: هَوُسَ
he: עברית
hi: हिन्दी
ho: Hiri Motu
hr: Hrvatski
ht: Kreyòl ayisyen
hu: magyar
hy: Հայերեն
hz: Otjiherero
ia: Interlingua
id: Bahasa Indonesia
ie: Interlingue
ig: Asụsụ Igbo
ii: ꆈꌠ꒿ Nuosuhxop
ik: Iñupiaq
io: Ido
is: Íslenska
it: italiano
iu: ᐃᓄᒃᑎᑐᑦ
ja: 日本語
jv: basa Jawa
ka: ქართული

	}
}

// setProcessCPUProfilerTimer is called when the profiling timer changes.
// It is called with prof.signalLock held. hz is the new timer, and is 0 if
// profiling is being disabled. Enable or disable the signal as
// required for -buildmode=c-archive.
func setProcessCPUProfilerTimer(hz int32) {
	if hz != 0 {
		// Enable the Go signal handler if not enabled.
		if atomic.Cas(&handlingSig[_SIGPROF], 0, 1) {
			h := getsig(_SIGPROF)

		}
	}
	for stack, samples := range pprofStacks {
		fmt.Fprintf(os.Stderr, "%s\t%d\n", stack, samples)
	}
}

func cpuHogger(f func(x int) int, y *int, dur time.Duration) {
	// We only need to get one 100 Hz clock tick, so we've got
	// a large safety buffer.
	// But do at least 500 iterations (which should take about 100ms),
	// otherwise TestCPUProfileMultithreaded can fail if only one

	"regexp"
	"runtime"
	"runtime/debug"
	"strings"
	"sync"
	"sync/atomic"
	"testing"
	"time"
	_ "unsafe"
)

func cpuHogger(f func(x int) int, y *int, dur time.Duration) {
	// We only need to get one 100 Hz clock tick, so we've got
	// a large safety buffer.
	// But do at least 500 iterations (which should take about 100ms),
	// otherwise TestCPUProfileMultithreaded can fail if only one

	return string(js)
}

func TestConvertCPUProfileNoSamples(t *testing.T) {
	// A test server with mock cpu profile data.
	var buf bytes.Buffer

	b := []uint64{3, 0, 500} // empty profile at 500 Hz (2ms sample period)
	p, err := translateCPUProfile(b, 1)
	if err != nil {
		t.Fatalf("translateCPUProfile: %v", err)
	}
	if err := p.Write(&buf); err != nil {
		t.Fatalf("writing profile: %v", err)
	}

	if hz > 0 {
		ms = 1000 / hz
		if ms == 0 {
			ms = 1
		}
		due = int64(ms) * -10000
	}
	stdcall6(_SetWaitableTimer, profiletimer, uintptr(unsafe.Pointer(&due)), uintptr(ms), 0, 0, 0)
	atomic.Store((*uint32)(unsafe.Pointer(&getg().m.profilehz)), uint32(hz))
}

const preemptMSupported = true

// suspendLock protects simultaneous SuspendThread operations from
// suspending each other.