}

// A Signal is a number describing a process signal.
// It implements the [os.Signal] interface.
type Signal int

const (
	_ Signal = iota
	SIGCHLD
	SIGINT
	SIGKILL
	SIGTRAP
	SIGQUIT
	SIGTERM
)

func (s Signal) Signal() {}

func (s Signal) String() string {
	if 0 <= s && int(s) < len(signals) {
		str := signals[s]
		if str != "" {
			return str
		}

		}
	}
}

// signalWaitUntilIdle waits until the signal delivery mechanism is idle.
// This is used to ensure that we do not drop a signal notification due
// to a race between disabling a signal and receiving a signal.
// This assumes that signal delivery has already been disabled for
// the signal(s) in question, and here we are just waiting to make sure
// that all the signals have been delivered to the user channels

		exit(1)
	}

	if pthread_attr_setdetachstate(&attr, _PTHREAD_CREATE_DETACHED) != 0 {
		writeErrStr(failthreadcreate)
		exit(1)
	}

	// Disable signals during create, so that the new thread starts
	// with signals disabled. It will enable them in minit.
	sigprocmask(_SIG_SETMASK, &sigset_all, &oset)
	var ret int32
	for tries := 0; tries < 20; tries++ {

	// Set up channel on which to send signal notifications.
	// We must use a buffered channel or risk missing the signal
	// if we're not ready to receive when the signal is sent.
	c := make(chan os.Signal, 1)

	// Passing no signals to Notify means that
	// all signals will be sent to the channel.
	signal.Notify(c)

	// Block until any signal is received.
	s := <-c
	fmt.Println("Got signal:", s)

}

// initializationSignalFrom returns an initialization signal function
// which when called signals that watch initialization has already finished
// to priority and fairness dispatcher.
func initializationSignalFrom(ctx context.Context) (InitializationSignal, bool) {
	signal, ok := ctx.Value(priorityAndFairnessInitializationSignalKey).(InitializationSignal)
	return signal, ok && signal != nil
}

package main

import "C"

import (
	"os"
	"os/signal"
	"syscall"
	"time"
)

// The channel used to read SIGIO signals.
var sigioChan chan os.Signal

// CatchSIGIO starts catching SIGIO signals.
//
//export CatchSIGIO
func CatchSIGIO() {
	sigioChan = make(chan os.Signal, 1)
	signal.Notify(sigioChan, syscall.SIGIO)
}

// ResetSIGIO stops catching SIGIO signals.
//
//export ResetSIGIO
func ResetSIGIO() {

package main

import "C"

import (
	"os"
	"os/signal"
	"syscall"
	"time"
)

// The channel used to read SIGIO signals.
var sigioChan chan os.Signal

// CatchSIGIO starts catching SIGIO signals.
//
//export CatchSIGIO
func CatchSIGIO() {
	sigioChan = make(chan os.Signal, 1)
	signal.Notify(sigioChan, syscall.SIGIO)
}

// ResetSIGIO stops catching SIGIO signals.
//
//export ResetSIGIO
func ResetSIGIO() {

// Called from exitm, but not from drop, to undo the effect of thread-owned
// resources in minit, semacreate, or elsewhere. Do not take locks after calling this.
func mdestroy(mp *m) {
}

// wasm has no signals
const _NSIG = 0

func signame(sig uint32) string {
	return ""
}

func crash() {
	*(*int32)(nil) = 0
}

func initsig(preinit bool) {
}

// May run with m.p==nil, so write barriers are not allowed.
//

			if (verbose) {
				printf("attempting external signal test\n");
			}

			fprintf(stderr, "OK\n");
			fflush(stderr);

			// The program should be interrupted before
			// this sleep finishes. We use select rather
			// than sleep because in older versions of
			// glibc the sleep function does some signal
			// fiddling to handle SIGCHLD.  If this
			// program is fiddling signals just when the

	OpLessThan ThresholdOperator = "LessThan"
)

// OpForSignal maps Signals to ThresholdOperators.
// Today, the only supported operator is "LessThan". This may change in the future,
// for example if "consumed" (as opposed to "available") type signals are added.
// In both cases the directionality of the threshold is implicit to the signal type
// (for a given signal, the decision to evict will be made when crossing the threshold