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106 lines
2.4 KiB
106 lines
2.4 KiB
// +build openbsd
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package mem
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import (
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"bytes"
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"context"
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"encoding/binary"
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"errors"
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"fmt"
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"os/exec"
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"github.com/shirou/gopsutil/internal/common"
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"golang.org/x/sys/unix"
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)
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func GetPageSize() (uint64, error) {
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return GetPageSizeWithContext(context.Background())
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}
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func GetPageSizeWithContext(ctx context.Context) (uint64, error) {
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uvmexp, err := unix.SysctlUvmexp("vm.uvmexp")
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if err != nil {
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return 0, err
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}
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return uint64(uvmexp.Pagesize), nil
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}
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func VirtualMemory() (*VirtualMemoryStat, error) {
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return VirtualMemoryWithContext(context.Background())
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}
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func VirtualMemoryWithContext(ctx context.Context) (*VirtualMemoryStat, error) {
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uvmexp, err := unix.SysctlUvmexp("vm.uvmexp")
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if err != nil {
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return nil, err
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}
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p := uint64(uvmexp.Pagesize)
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ret := &VirtualMemoryStat{
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Total: uint64(uvmexp.Npages) * p,
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Free: uint64(uvmexp.Free) * p,
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Active: uint64(uvmexp.Active) * p,
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Inactive: uint64(uvmexp.Inactive) * p,
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Cached: 0, // not available
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Wired: uint64(uvmexp.Wired) * p,
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}
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ret.Available = ret.Inactive + ret.Cached + ret.Free
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ret.Used = ret.Total - ret.Available
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ret.UsedPercent = float64(ret.Used) / float64(ret.Total) * 100.0
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mib := []int32{CTLVfs, VfsGeneric, VfsBcacheStat}
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buf, length, err := common.CallSyscall(mib)
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if err != nil {
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return nil, err
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}
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if length < sizeOfBcachestats {
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return nil, fmt.Errorf("short syscall ret %d bytes", length)
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}
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var bcs Bcachestats
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br := bytes.NewReader(buf)
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err = common.Read(br, binary.LittleEndian, &bcs)
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if err != nil {
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return nil, err
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}
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ret.Buffers = uint64(bcs.Numbufpages) * p
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return ret, nil
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}
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// Return swapctl summary info
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func SwapMemory() (*SwapMemoryStat, error) {
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return SwapMemoryWithContext(context.Background())
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}
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func SwapMemoryWithContext(ctx context.Context) (*SwapMemoryStat, error) {
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swapctl, err := exec.LookPath("swapctl")
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if err != nil {
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return nil, err
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}
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out, err := invoke.CommandWithContext(ctx, swapctl, "-sk")
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if err != nil {
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return &SwapMemoryStat{}, nil
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}
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line := string(out)
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var total, used, free uint64
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_, err = fmt.Sscanf(line,
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"total: %d 1K-blocks allocated, %d used, %d available",
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&total, &used, &free)
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if err != nil {
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return nil, errors.New("failed to parse swapctl output")
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}
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percent := float64(used) / float64(total) * 100
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return &SwapMemoryStat{
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Total: total * 1024,
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Used: used * 1024,
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Free: free * 1024,
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UsedPercent: percent,
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}, nil
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}
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