Files
weave-scope/vendor/github.com/opencontainers/runc/libcontainer/system/proc.go
Alfonso Acosta 9f02e20ac3 Bump github.com/ugorji/go/codec/ for performance improvements
This caused a dependency chain reaction (sigh):

* All the k8s packages had to be fetched again. This in turn required:
  * Pining github.com/docker/docker/pkg/parsers to
    0f5c9d301b9b1cca66b3ea0f9dec3b5317d3686d to cirvumvent
    https://github.com/kubernetes/kubernetes/issues/18774
  * Update github.com/juju/ratelimit
  * Make probe/kubernetes/client.go comply with API changes.
2016-02-16 06:31:35 +00:00

28 lines
786 B
Go

package system
import (
"io/ioutil"
"path/filepath"
"strconv"
"strings"
)
// look in /proc to find the process start time so that we can verify
// that this pid has started after ourself
func GetProcessStartTime(pid int) (string, error) {
data, err := ioutil.ReadFile(filepath.Join("/proc", strconv.Itoa(pid), "stat"))
if err != nil {
return "", err
}
parts := strings.Split(string(data), " ")
// the starttime is located at pos 22
// from the man page
//
// starttime %llu (was %lu before Linux 2.6)
// (22) The time the process started after system boot. In kernels before Linux 2.6, this
// value was expressed in jiffies. Since Linux 2.6, the value is expressed in clock ticks
// (divide by sysconf(_SC_CLK_TCK)).
return parts[22-1], nil // starts at 1
}