Switch to new vendor directory layout

Fixes #113

Signed-off-by: Marcos Lilljedahl <marcosnils@gmail.com>

vendor/github.com/opencontainers/runc/libcontainer/cgroups/fs/cpu.go

@@ -0,0 +1,94 @@
+// +build linux
+
+package fs
+
+import (
+	"bufio"
+	"os"
+	"path/filepath"
+	"strconv"
+
+	"github.com/opencontainers/runc/libcontainer/cgroups"
+	"github.com/opencontainers/runc/libcontainer/configs"
+)
+
+type CpuGroup struct {
+}
+
+func (s *CpuGroup) Name() string {
+	return "cpu"
+}
+
+func (s *CpuGroup) Apply(d *cgroupData) error {
+	// We always want to join the cpu group, to allow fair cpu scheduling
+	// on a container basis
+	_, err := d.join("cpu")
+	if err != nil && !cgroups.IsNotFound(err) {
+		return err
+	}
+	return nil
+}
+
+func (s *CpuGroup) Set(path string, cgroup *configs.Cgroup) error {
+	if cgroup.Resources.CpuShares != 0 {
+		if err := writeFile(path, "cpu.shares", strconv.FormatInt(cgroup.Resources.CpuShares, 10)); err != nil {
+			return err
+		}
+	}
+	if cgroup.Resources.CpuPeriod != 0 {
+		if err := writeFile(path, "cpu.cfs_period_us", strconv.FormatInt(cgroup.Resources.CpuPeriod, 10)); err != nil {
+			return err
+		}
+	}
+	if cgroup.Resources.CpuQuota != 0 {
+		if err := writeFile(path, "cpu.cfs_quota_us", strconv.FormatInt(cgroup.Resources.CpuQuota, 10)); err != nil {
+			return err
+		}
+	}
+	if cgroup.Resources.CpuRtPeriod != 0 {
+		if err := writeFile(path, "cpu.rt_period_us", strconv.FormatInt(cgroup.Resources.CpuRtPeriod, 10)); err != nil {
+			return err
+		}
+	}
+	if cgroup.Resources.CpuRtRuntime != 0 {
+		if err := writeFile(path, "cpu.rt_runtime_us", strconv.FormatInt(cgroup.Resources.CpuRtRuntime, 10)); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (s *CpuGroup) Remove(d *cgroupData) error {
+	return removePath(d.path("cpu"))
+}
+
+func (s *CpuGroup) GetStats(path string, stats *cgroups.Stats) error {
+	f, err := os.Open(filepath.Join(path, "cpu.stat"))
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+	defer f.Close()
+
+	sc := bufio.NewScanner(f)
+	for sc.Scan() {
+		t, v, err := getCgroupParamKeyValue(sc.Text())
+		if err != nil {
+			return err
+		}
+		switch t {
+		case "nr_periods":
+			stats.CpuStats.ThrottlingData.Periods = v
+
+		case "nr_throttled":
+			stats.CpuStats.ThrottlingData.ThrottledPeriods = v
+
+		case "throttled_time":
+			stats.CpuStats.ThrottlingData.ThrottledTime = v
+		}
+	}
+	return nil
+}