122 lines
2.7 KiB
Go
122 lines
2.7 KiB
Go
// +build freebsd
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package mem
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import (
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"context"
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"errors"
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"os/exec"
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"strconv"
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"strings"
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"golang.org/x/sys/unix"
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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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pageSize, err := unix.SysctlUint32("vm.stats.vm.v_page_size")
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if err != nil {
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return nil, err
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}
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pageCount, err := unix.SysctlUint32("vm.stats.vm.v_page_count")
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if err != nil {
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return nil, err
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}
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free, err := unix.SysctlUint32("vm.stats.vm.v_free_count")
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if err != nil {
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return nil, err
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}
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active, err := unix.SysctlUint32("vm.stats.vm.v_active_count")
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if err != nil {
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return nil, err
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}
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inactive, err := unix.SysctlUint32("vm.stats.vm.v_inactive_count")
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if err != nil {
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return nil, err
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}
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cached, err := unix.SysctlUint32("vm.stats.vm.v_cache_count")
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if err != nil {
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return nil, err
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}
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buffers, err := unix.SysctlUint32("vfs.bufspace")
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if err != nil {
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return nil, err
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}
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wired, err := unix.SysctlUint32("vm.stats.vm.v_wire_count")
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if err != nil {
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return nil, err
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}
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p := uint64(pageSize)
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ret := &VirtualMemoryStat{
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Total: uint64(pageCount) * p,
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Free: uint64(free) * p,
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Active: uint64(active) * p,
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Inactive: uint64(inactive) * p,
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Cached: uint64(cached) * p,
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Buffers: uint64(buffers),
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Wired: uint64(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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return ret, nil
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}
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// Return swapinfo
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// FreeBSD can have multiple swap devices. but use only first device
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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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swapinfo, err := exec.LookPath("swapinfo")
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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.Command(swapinfo)
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if err != nil {
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return nil, err
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}
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for _, line := range strings.Split(string(out), "\n") {
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values := strings.Fields(line)
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// skip title line
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if len(values) == 0 || values[0] == "Device" {
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continue
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}
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u := strings.Replace(values[4], "%", "", 1)
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total_v, err := strconv.ParseUint(values[1], 10, 64)
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if err != nil {
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return nil, err
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}
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used_v, err := strconv.ParseUint(values[2], 10, 64)
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if err != nil {
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return nil, err
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}
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free_v, err := strconv.ParseUint(values[3], 10, 64)
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if err != nil {
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return nil, err
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}
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up_v, err := strconv.ParseFloat(u, 64)
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if err != nil {
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return nil, err
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}
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return &SwapMemoryStat{
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Total: total_v,
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Used: used_v,
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Free: free_v,
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UsedPercent: up_v,
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}, nil
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}
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return nil, errors.New("no swap devices found")
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}
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