dotcloud/docker

package supervisor // import "github.com/docker/docker/libcontainerd/supervisor"

import (
    "os"
    "path/filepath"
    "syscall"
    "time"

    "github.com/docker/docker/pkg/process"
)

const (
    sockFile      = "containerd.sock"
    debugSockFile = "containerd-debug.sock"
)

func defaultGRPCAddress(stateDir string) string {
    return filepath.Join(stateDir, sockFile)
}

func defaultDebugAddress(stateDir string) string {
    return filepath.Join(stateDir, debugSockFile)
}

func (r *remote) stopDaemon() {
    // Ask the daemon to quit
    syscall.Kill(r.daemonPid, syscall.SIGTERM)
    // Wait up to 15secs for it to stop
    for i := time.Duration(0); i < shutdownTimeout; i += time.Second {
        if !process.Alive(r.daemonPid) {
            break
        }
        time.Sleep(time.Second)
    }

    if process.Alive(r.daemonPid) {
        r.logger.WithField("pid", r.daemonPid).Warn("daemon didn't stop within 15 secs, killing it")
        syscall.Kill(r.daemonPid, syscall.SIGKILL)
    }
}

func (r *remote) killDaemon() {
    // Try to get a stack trace
    _ = syscall.Kill(r.daemonPid, syscall.SIGUSR1)
    <-time.After(100 * time.Millisecond)
    _ = process.Kill(r.daemonPid)
}

func (r *remote) platformCleanup() {
    _ = os.Remove(r.Address())
}