67 lines
1.6 KiB
Go
67 lines
1.6 KiB
Go
// Copyright 2018 Tobias Klauser
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
//go:build darwin || dragonfly || freebsd || netbsd || openbsd
|
|
// +build darwin dragonfly freebsd netbsd openbsd
|
|
|
|
package numcpus
|
|
|
|
import (
|
|
"runtime"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
func getConfigured() (int, error) {
|
|
n, err := unix.SysctlUint32("hw.ncpu")
|
|
return int(n), err
|
|
}
|
|
|
|
func getKernelMax() (int, error) {
|
|
if runtime.GOOS == "freebsd" {
|
|
n, err := unix.SysctlUint32("kern.smp.maxcpus")
|
|
return int(n), err
|
|
}
|
|
return 0, ErrNotSupported
|
|
}
|
|
|
|
func getOffline() (int, error) {
|
|
return 0, ErrNotSupported
|
|
}
|
|
|
|
func getOnline() (int, error) {
|
|
var n uint32
|
|
var err error
|
|
switch runtime.GOOS {
|
|
case "netbsd", "openbsd":
|
|
n, err = unix.SysctlUint32("hw.ncpuonline")
|
|
if err != nil {
|
|
n, err = unix.SysctlUint32("hw.ncpu")
|
|
}
|
|
default:
|
|
n, err = unix.SysctlUint32("hw.ncpu")
|
|
}
|
|
return int(n), err
|
|
}
|
|
|
|
func getPossible() (int, error) {
|
|
n, err := unix.SysctlUint32("hw.ncpu")
|
|
return int(n), err
|
|
}
|
|
|
|
func getPresent() (int, error) {
|
|
n, err := unix.SysctlUint32("hw.ncpu")
|
|
return int(n), err
|
|
}
|