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// 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
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
}
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