// TODO(49370): This code is riddled with write barriers, but called from
	// a signal handler. Add the go:nowritebarrierrec annotation and restructure
	// this to avoid write barriers.

	switch h.gp.atomicstatus.Load() {
	case _Grunning:
		if getg().m != h.mp {
			println("trap on wrong M", getg().m, h.mp)
			return false
		}
		// Save the signal context
		h.saveSigContext(ctxt)
		// Set PC to debugCallV2.

// profiling buffer. It is called from a signal handler, so is limited in what
// it can do. mp must be the thread that is currently stopped in a signal.
func traceCPUSample(gp *g, mp *m, pp *p, stk []uintptr) {
	if !traceEnabled() {
		// Tracing is usually turned off; don't spend time acquiring the signal
		// lock unless it's active.
		return
	}
	if mp == nil {

	start    highPrecisionTime // Time test or benchmark started
	duration time.Duration
	barrier  chan bool // To signal parallel subtests they may start. Nil when T.Parallel is not present (B) or not usable (when fuzzing).
	signal   chan bool // To signal a test is done.
	sub      []*T      // Queue of subtests to be run in parallel.

		PressureTransitionPeriod: time.Minute * 5,
		Thresholds: []evictionapi.Threshold{
			{
				Signal:   evictionapi.SignalMemoryAvailable,
				Operator: evictionapi.OpLessThan,
				Value: evictionapi.ThresholdValue{
					Quantity: quantityMustParse("1Gi"),
				},
			},
			{
				Signal:   evictionapi.SignalMemoryAvailable,
				Operator: evictionapi.OpLessThan,
				Value: evictionapi.ThresholdValue{

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package unix

import "syscall"

func PidFDSendSignal(pidfd uintptr, s syscall.Signal) error {
	_, _, errno := syscall.Syscall(pidfdSendSignalTrap, pidfd, uintptr(s), 0)
	if errno != 0 {
		return errno
	}
	return nil
}

func PidFDOpen(pid, flags int) (uintptr, error) {

					// Worker terminated by a signal that probably wasn't caused by a
					// specific input to the fuzz function. For example, on Linux,
					// the kernel (OOM killer) may send SIGKILL to a process using a lot
					// of memory. Or the shell might send SIGHUP when the terminal
					// is closed. Don't record a crasher.
					return fmt.Errorf("fuzzing process terminated by unexpected signal; no crash will be recorded: %v", w.waitErr)
				}

#ifndef PCH_H
#define PCH_H
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <math.h>
#include <stdarg.h>
#include <signal.h>
#include <stddef.h>
#include <errno.h>
#include <time.h>

// context value.
//
// If the traceback function is called from a signal handler on a Unix
// system, SigContext will be the signal context argument passed to
// the signal handler (a C ucontext_t* cast to uintptr_t). This may be
// used to start tracing at the point where the signal occurred. If
// the traceback function is not called from a signal handler,
// SigContext will be zero.
//

*/

// +godefs map __fpregset_t [644]byte

package runtime

/*
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/signal.h>
#include <sys/event.h>
#include <sys/time.h>
#include <sys/ucontext.h>
#include <sys/unistd.h>
#include <errno.h>
#include <signal.h>
*/
import "C"

const (
	EINTR  = C.EINTR
	EFAULT = C.EFAULT
	EAGAIN = C.EAGAIN

	O_WRONLY   = C.O_WRONLY

		ctx = metadata.NewOutgoingContext(ctx, pr.contextMetadata)
	}
	go func() {
		defer utilruntime.HandleCrash()
		<-stopCh
		pr.mux.Lock()
		defer pr.mux.Unlock()
		pr.stopped = true
		pr.cond.Signal()
	}()
	timer := pr.clock.NewTimer(progressRequestPeriod)
	defer timer.Stop()
	for {
		stopped := func() bool {
			pr.mux.Lock()
			defer pr.mux.Unlock()
			for pr.waiting == 0 && !pr.stopped {