// accurate reporting of its CPU usage; see issue 35057) and ignore any
		// that it gets from the process-wide setitimer (to not over-count its
		// CPU consumption).
		return timer_create
	}

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

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

//go:cgo_import_dynamic libc_sem_post sem_post "libc.so"
//go:cgo_import_dynamic libc_sem_reltimedwait_np sem_reltimedwait_np "libc.so"
//go:cgo_import_dynamic libc_sem_wait sem_wait "libc.so"
//go:cgo_import_dynamic libc_setitimer setitimer "libc.so"
//go:cgo_import_dynamic libc_sigaction sigaction "libc.so"
//go:cgo_import_dynamic libc_sigaltstack sigaltstack "libc.so"
//go:cgo_import_dynamic libc_sigprocmask sigprocmask "libc.so"

//go:cgo_unsafe_args
func raiseproc(sig uint32) {
	libcCall(unsafe.Pointer(abi.FuncPCABI0(raiseproc_trampoline)), unsafe.Pointer(&sig))
}
func raiseproc_trampoline()

//go:nosplit
//go:cgo_unsafe_args
func setitimer(mode int32, new, old *itimerval) {
	libcCall(unsafe.Pointer(abi.FuncPCABI0(setitimer_trampoline)), unsafe.Pointer(&mode))
	KeepAlive(new)
	KeepAlive(old)
}
func setitimer_trampoline()

//go:nosplit

	// From NetBSD's <sys/ucontext.h>
	_UC_SIGMASK = 0x01
	_UC_CPU     = 0x04

	// From <sys/lwp.h>
	_LWP_DETACHED = 0x00000040
)

type mOS struct {
	waitsemacount uint32
}

//go:noescape
func setitimer(mode int32, new, old *itimerval)

//go:noescape
func sigaction(sig uint32, new, old *sigactiont)

//go:noescape
func sigaltstack(new, old *stackt)

//go:noescape
func sigprocmask(how int32, new, old *sigset)

			setsig(_SIGPROF, abi.FuncPCABIInternal(sighandler))
		}

		var it itimerval
		it.it_interval.tv_sec = 0
		it.it_interval.set_usec(1000000 / hz)
		it.it_value = it.it_interval
		setitimer(_ITIMER_PROF, &it, nil)
	} else {
		setitimer(_ITIMER_PROF, &itimerval{}, nil)

		// If the Go signal handler should be disabled by default,
		// switch back to the signal handler that was installed

                            }
                            if (fileLockContentionHandler.maybePingOwner(lockInfo.port, lockInfo.lockId, displayName, backoff.getTimer().getElapsedMillis() - lastPingTime, backoff.getSignal())) {
                                lastPingTime = backoff.getTimer().getElapsedMillis();

	}
	version, versionTime := readVERSION(goroot)

	// Start with files from GOROOT, filtering out non-distribution files.
	base, err := NewArchive(goroot)
	if err != nil {
		log.Fatal(err)
	}
	base.SetTime(versionTime)
	base.SetMode(mode)
	base.Remove(
		".git/**",
		".gitattributes",
		".github/**",
		".gitignore",
		"VERSION.cache",
		"misc/cgo/*/_obj/**",
		"**/.DS_Store",

        final Calendar calendar;
        if (locale == null) {
            calendar = Calendar.getInstance();
        } else {
            calendar = Calendar.getInstance(locale);
        }
        calendar.setTime(date);
        return calendar;
    }

    /**
     * 文字列を{@link Time}に変換します。
     *
     * @param str
     *            文字列
     * @return 変換された{@link Time}
     */

        final Calendar calendar;
        if (locale == null) {
            calendar = Calendar.getInstance();
        } else {
            calendar = Calendar.getInstance(locale);
        }
        calendar.setTime(date);
        return calendar;
    }

    /**
     * 文字列を{@link Timestamp}に変換します。
     *
     * @param str
     *            文字列
     * @return 変換された{@link Timestamp}
     */

        final Calendar calendar;
        if (locale == null) {
            calendar = Calendar.getInstance();
        } else {
            calendar = Calendar.getInstance(locale);
        }
        calendar.setTime(date);
        return calendar;
    }

    /**
     * 文字列を{@link java.sql.Date}に変換します。
     *
     * @param str
     *            文字列
     * @return 変換された{@link java.sql.Date}
     */