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// SPDX-License-Identifier: BSD-3-Clause
//go:build netbsd
package mem
import (
"context"
"errors"
"fmt"
"golang.org/x/sys/unix"
)
func GetPageSize() (uint64, error) {
return GetPageSizeWithContext(context.Background())
}
func GetPageSizeWithContext(ctx context.Context) (uint64, error) {
uvmexp, err := unix.SysctlUvmexp("vm.uvmexp2")
if err != nil {
return 0, err
}
return uint64(uvmexp.Pagesize), nil
}
func VirtualMemory() (*VirtualMemoryStat, error) {
return VirtualMemoryWithContext(context.Background())
}
func VirtualMemoryWithContext(ctx context.Context) (*VirtualMemoryStat, error) {
uvmexp, err := unix.SysctlUvmexp("vm.uvmexp2")
if err != nil {
return nil, err
}
p := uint64(uvmexp.Pagesize)
ret := &VirtualMemoryStat{
Total: uint64(uvmexp.Npages) * p,
Free: uint64(uvmexp.Free) * p,
Active: uint64(uvmexp.Active) * p,
Inactive: uint64(uvmexp.Inactive) * p,
Cached: 0, // not available
Wired: uint64(uvmexp.Wired) * p,
}
ret.Available = ret.Inactive + ret.Cached + ret.Free
ret.Used = ret.Total - ret.Available
ret.UsedPercent = float64(ret.Used) / float64(ret.Total) * 100.0
// Get buffers from vm.bufmem sysctl
ret.Buffers, err = unix.SysctlUint64("vm.bufmem")
if err != nil {
return nil, err
}
return ret, nil
}
// Return swapctl summary info
func SwapMemory() (*SwapMemoryStat, error) {
return SwapMemoryWithContext(context.Background())
}
func SwapMemoryWithContext(ctx context.Context) (*SwapMemoryStat, error) {
out, err := invoke.CommandWithContext(ctx, "swapctl", "-sk")
if err != nil {
return &SwapMemoryStat{}, nil
}
line := string(out)
var total, used, free uint64
_, err = fmt.Sscanf(line,
"total: %d 1K-blocks allocated, %d used, %d available",
&total, &used, &free)
if err != nil {
return nil, errors.New("failed to parse swapctl output")
}
percent := float64(used) / float64(total) * 100
return &SwapMemoryStat{
Total: total * 1024,
Used: used * 1024,
Free: free * 1024,
UsedPercent: percent,
}, nil
}
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