}

//sys	ptrace(request int, pid int, addr uintptr, data int) (err error)
//sys	ptracePtr(request int, pid int, addr unsafe.Pointer, data int) (err error) = SYS_PTRACE

func PtraceAttach(pid int) (err error) {
	return ptrace(PT_ATTACH, pid, 0, 0)
}

func PtraceCont(pid int, signal int) (err error) {
	return ptrace(PT_CONTINUE, pid, 1, signal)
}

func PtraceDetach(pid int) (err error) {

        when:
        runner().build()

        then:
        def pid = testKitDaemons().daemon.with {
            assertIdle()
            context.pid
        }

        when:
        runner().build()

        then:
        testKitDaemons().daemon.context.pid == pid
    }

	l := p.local                              // load-consume
	if uintptr(pid) < s {
		return indexLocal(l, pid), pid
	}
	return p.pinSlow()
}

func (p *Pool) pinSlow() (*poolLocal, int) {
	// Retry under the mutex.
	// Can not lock the mutex while pinned.
	runtime_procUnpin()
	allPoolsMu.Lock()
	defer allPoolsMu.Unlock()
	pid := runtime_procPin()
	// poolCleanup won't be called while we are pinned.

    void printRunningDaemons(final List<Status> statuses) {
        if (!statuses.isEmpty()) {
            for(Status status : statuses) {
                Long pid = status.getPid();
                LOGGER.quiet(String.format(STATUS_FORMAT, pid == null ? "PID unknown" : pid, status.getStatus(), status.getVersion()));
            }
        }
    }

    @VisibleForTesting

		// Signal self if parent is already dead. This might cause a
		// duplicate signal in rare cases, but it won't matter when
		// using SIGKILL.
		pid, _ = rawSyscallNoError(SYS_GETPPID, 0, 0, 0)
		if pid != ppid {
			pid, _ = rawSyscallNoError(SYS_GETPID, 0, 0, 0)
			_, _, err1 = RawSyscall(SYS_KILL, pid, uintptr(sys.Pdeathsig), 0)
			if err1 != 0 {
				goto childerror
			}
		}
	}

    @Nullable
    private final Long pid;
    private final String version;
    private final String status;

    public Status(Long pid, String version, String status) {
        this.pid = pid;
        this.version = version;
        this.status = status;
    }

    @Nullable
    public Long getPid() {
        return pid;
    }

    public String getVersion() {
        return version;

		// Set the environment variable for fuzz workers.
		pid := os.Getpid()
		ppid := os.Getppid()
		os.Setenv("GO_TEST_INTERRUPT_PIDS", fmt.Sprintf("%d,%d", ppid, pid))
	}

	sentInterrupt := false
	f.Fuzz(func(t *testing.T, orig string) {
		if !sentInterrupt {
			// Simulate a ctrl-C on the keyboard by sending SIGINT
			// to the main test process and its parent.
			for _, pid := range strings.Split(pids, ",") {

	}
	errList := []error{}
	for _, pid := range pids {
		if err = syscall.Kill(pid, sig); err != nil {
			errList = append(errList, err)
		}
	}
	return utilerrors.NewAggregate(errList)
}

// PidOf finds process(es) with a specified name (regexp match)
// and return their pid(s).
func PidOf(name string) ([]int, error) {
	if len(name) == 0 {

func PtraceGetRegSetArm64(pid, addr int, regsout *PtraceRegsArm64) error {
	iovec := Iovec{(*byte)(unsafe.Pointer(regsout)), uint64(unsafe.Sizeof(*regsout))}
	return ptracePtr(PTRACE_GETREGSET, pid, uintptr(addr), unsafe.Pointer(&iovec))
}

// PtraceSetRegSetArm64 sets the registers used by arm64 binaries.
func PtraceSetRegSetArm64(pid, addr int, regs *PtraceRegsArm64) error {

	"syscall"
	"testing"
	"time"
	"unsafe"
)

var pid, tid int

func init() {
	// Record pid and tid of init thread for use during test.
	// The call to LockOSThread is just to exercise it;
	// we can't test that it does anything.
	// Instead we're testing that the conditions are good
	// for how it is used in init (must be on main thread).
	pid, tid = syscall.Getpid(), syscall.Gettid()
	LockOSThread()