Golang Await Examples

Example #1

File: exec_plan9.go Project: rmeneely/go

// Wait waits for the Process to exit or stop, and then returns a
// ProcessState describing its status and an error, if any.
func (p *Process) Wait() (ps *ProcessState, err error) {
	var waitmsg syscall.Waitmsg

	if p.Pid == -1 {
		return nil, ErrInvalid
	}

	for true {
		err = syscall.Await(&waitmsg)

		if err != nil {
			return nil, NewSyscallError("wait", err)
		}

		if waitmsg.Pid == p.Pid {
			p.done = true
			break
		}
	}

	ps = &ProcessState{
		pid:    waitmsg.Pid,
		status: &waitmsg,
	}
	return ps, nil
}

Example #2

File: exec_plan9.go Project: ssrl/go

// Wait waits for the Process to exit or stop, and then returns a
// Waitmsg describing its status and an Error, if any. The options
// (WNOHANG etc.) affect the behavior of the Wait call.
func (p *Process) Wait(options int) (w *Waitmsg, err Error) {
	var waitmsg syscall.Waitmsg

	if p.Pid == -1 {
		return nil, EINVAL
	}

	for true {
		err = syscall.Await(&waitmsg)

		if iserror(err) {
			return nil, NewSyscallError("wait", err)
		}

		if waitmsg.Pid == p.Pid {
			break
		}
	}

	return &Waitmsg{waitmsg}, nil
}