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// +build darwin
package mem
import (
"context"
"encoding/binary"
"strconv"
"strings"
"github.com/shirou/gopsutil/internal/common"
"golang.org/x/sys/unix"
)
func getHwMemsize() (uint64, error) {
totalString, err := unix.Sysctl("hw.memsize")
if err != nil {
return 0, err
}
// unix.sysctl() helpfully assumes the result is a null-terminated string and
// removes the last byte of the result if it's 0 :/
totalString += "\x00"
total := uint64(binary.LittleEndian.Uint64([]byte(totalString)))
return total, nil
}
// SwapMemory returns swapinfo.
func SwapMemory() (*SwapMemoryStat, error) {
return SwapMemoryWithContext(context.Background())
}
func SwapMemoryWithContext(ctx context.Context) (*SwapMemoryStat, error) {
var ret *SwapMemoryStat
swapUsage, err := common.DoSysctrl("vm.swapusage")
if err != nil {
return ret, err
}
total := strings.Replace(swapUsage[2], "M", "", 1)
used := strings.Replace(swapUsage[5], "M", "", 1)
free := strings.Replace(swapUsage[8], "M", "", 1)
total_v, err := strconv.ParseFloat(total, 64)
if err != nil {
return nil, err
}
used_v, err := strconv.ParseFloat(used, 64)
if err != nil {
return nil, err
}
free_v, err := strconv.ParseFloat(free, 64)
if err != nil {
return nil, err
}
u := float64(0)
if total_v != 0 {
u = ((total_v - free_v) / total_v) * 100.0
}
// vm.swapusage shows "M", multiply 1024 * 1024 to convert bytes.
ret = &SwapMemoryStat{
Total: uint64(total_v * 1024 * 1024),
Used: uint64(used_v * 1024 * 1024),
Free: uint64(free_v * 1024 * 1024),
UsedPercent: u,
}
return ret, nil
}
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