handler.

Go code built with -buildmode=c-archive or -buildmode=c-shared will
not install any other signal handlers by default. If there is an
existing signal handler, the Go runtime will turn on the SA_ONSTACK
flag and otherwise keep the signal handler. If Notify is called for an
asynchronous signal, a Go signal handler will be installed for that
signal. If, later, Reset is called for that signal, the original

        when:
        contendedAction.accept(signal)

        then:
        1 * lock.close()
        1 * signal.trigger()
        0 * _
    }

    def "releases retained lock at completion of action on contention"() {
        def action = Mock(Supplier)
        def lock = Mock(FileLock)
        def signal = Mock(FileLockReleasedSignal)
        Consumer contendedAction

        when:

    }

    public static <T extends Signal> ExponentialBackoff<T> of(int amount, TimeUnit unit, T signal) {
        return new ExponentialBackoff<T>((int) TimeUnit.MILLISECONDS.convert(amount, unit), signal, SLOT_TIME);
    }

    public static ExponentialBackoff<Signal> of(int amount, TimeUnit unit, int slotTime, TimeUnit slotTimeUnit) {

		return 2;
	}
	// gccgo does not set SA_ONSTACK for SIGSEGV.
	if (getenv("GCCGO") == NULL && (osa.sa_flags&SA_ONSTACK) == 0) {
		fprintf(stderr, "Go runtime did not install signal handler\n");
		return 2;
	}
	oldHandler = osa.sa_sigaction;

	return 0;
}

int check_handler() {
	if (sigaction(SIGSEGV, NULL, &sa) < 0) {
		perror("sigaction check");
		return 2;
	}
	if (sa.sa_sigaction != handler) {

// This is in testprognet instead of testprog because testprog
// must not import anything (like net, but also like os/signal)
// that kicks off background goroutines during init.

package main

import (
	"fmt"
	"os"
	"os/exec"
	"os/signal"
	"sync"
	"syscall"
	"time"
)

func init() {
	register("SignalDuringExec", SignalDuringExec)
	register("Nop", Nop)
}

	SIGPROF   = Signal(0x1b)
	SIGPWR    = Signal(0x1e)
	SIGQUIT   = Signal(0x3)
	SIGSEGV   = Signal(0xb)
	SIGSTKFLT = Signal(0x10)
	SIGSTOP   = Signal(0x13)
	SIGSYS    = Signal(0x1f)
	SIGTERM   = Signal(0xf)
	SIGTRAP   = Signal(0x5)
	SIGTSTP   = Signal(0x14)
	SIGTTIN   = Signal(0x15)
	SIGTTOU   = Signal(0x16)
	SIGUNUSED = Signal(0x1f)
	SIGURG    = Signal(0x17)
	SIGUSR1   = Signal(0xa)

	SIGFPE      = syscall.Signal(0x8)
	SIGGRANT    = syscall.Signal(0x3c)
	SIGHUP      = syscall.Signal(0x1)
	SIGILL      = syscall.Signal(0x4)
	SIGINT      = syscall.Signal(0x2)
	SIGIO       = syscall.Signal(0x17)
	SIGIOINT    = syscall.Signal(0x10)
	SIGIOT      = syscall.Signal(0x6)
	SIGKAP      = syscall.Signal(0x3c)
	SIGKILL     = syscall.Signal(0x9)
	SIGLOST     = syscall.Signal(0x6)

func parseGracePeriods(statements map[string]string) (map[evictionapi.Signal]time.Duration, error) {
	if len(statements) == 0 {
		return nil, nil
	}
	results := map[evictionapi.Signal]time.Duration{}
	for signal, val := range statements {
		signal := evictionapi.Signal(signal)
		if !validSignal(signal) {
			return nil, fmt.Errorf(unsupportedEvictionSignal, signal)
		}
		gracePeriod, err := time.ParseDuration(val)

// license that can be found in the LICENSE file.

package signal

import (
	"internal/itoa"
	"os"
	"runtime"
	"syscall"
	"testing"
	"time"
)

func waitSig(t *testing.T, c <-chan os.Signal, sig os.Signal) {
	select {
	case s := <-c:
		if s != sig {
			t.Fatalf("signal was %v, want %v", s, sig)
		}
	case <-time.After(1 * time.Second):

package main

/*
#include <signal.h>
#include <pthread.h>

// Raise SIGIO.
static void CRaiseSIGIO(pthread_t* p) {
	pthread_kill(*p, SIGIO);
}
*/
import "C"

import (
	"os"
	"os/signal"
	"sync/atomic"
	"syscall"
)

var sigioCount int32

// Catch SIGIO.
//
//export GoCatchSIGIO
func GoCatchSIGIO() {
	c := make(chan os.Signal, 1)
	signal.Notify(c, syscall.SIGIO)