func Getrlimit(which int, lim *Rlimit) (err error) {
	_, _, e1 := syscall_rawSyscall(libc_getrlimit_trampoline_addr, uintptr(which), uintptr(unsafe.Pointer(lim)), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

var libc_getrlimit_trampoline_addr uintptr

//go:cgo_import_dynamic libc_getrlimit getrlimit "libc.so"

//go:cgo_import_dynamic libc_getegid getegid "libc.so"
//go:cgo_import_dynamic libc_getppid getppid "libc.so"
//go:cgo_import_dynamic libc_getpriority getpriority "libc.so"
//go:cgo_import_dynamic libc_getrlimit getrlimit "libc.so"
//go:cgo_import_dynamic libc_getrusage getrusage "libc.so"
//go:cgo_import_dynamic libc_getsid getsid "libc.so"
//go:cgo_import_dynamic libc_gettimeofday gettimeofday "libc.so"

func Getrlimit(which int, lim *Rlimit) (err error) {
	_, _, e1 := syscall_rawSyscall(libc_getrlimit_trampoline_addr, uintptr(which), uintptr(unsafe.Pointer(lim)), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

var libc_getrlimit_trampoline_addr uintptr

//go:cgo_import_dynamic libc_getrlimit getrlimit "/usr/lib/libSystem.B.dylib"

func Getrlimit(which int, lim *Rlimit) (err error) {
	_, _, e1 := syscall_rawSyscall(libc_getrlimit_trampoline_addr, uintptr(which), uintptr(unsafe.Pointer(lim)), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

var libc_getrlimit_trampoline_addr uintptr

//go:cgo_import_dynamic libc_getrlimit getrlimit "/usr/lib/libSystem.B.dylib"

// external network in parallel. If non-nil, it contains one buffer slot per
// test (send to acquire), with a low enough limit that the overall number of
// connections (summed across subprocesses) stays at or below base.NetLimit.
var netTestSem chan struct{}

var exeSuffix string = func() string {
	if runtime.GOOS == "windows" {
		return ".exe"
	}
	return ""
}()

func tooSlow(t *testing.T, reason string) {