12ea860eba
This also adds a cleaner exit for the inner main loop. I'm not sure if it's absolutely needed, but this will give me more confidence that we won't end in the middle of some action.
94 lines
2.2 KiB
Go
94 lines
2.2 KiB
Go
// Mgmt
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// Copyright (C) 2013-2016+ James Shubin and the project contributors
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// Written by James Shubin <james@shubin.ca> and the project contributors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package main
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//go:generate stringer -type=eventName -output=eventname_stringer.go
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type eventName int
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const (
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eventNil eventName = iota
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eventExit
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eventStart
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eventPause
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eventPoke
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eventBackPoke
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)
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type Resp chan bool
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type Event struct {
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Name eventName
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Resp Resp // channel to send an ack response on, nil to skip
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//Wg *sync.WaitGroup // receiver barrier to Wait() for everyone else on
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Msg string // some words for fun
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Activity bool // did something interesting happen?
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}
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// send a single acknowledgement on the channel if one was requested
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func (event *Event) ACK() {
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if event.Resp != nil { // if they've requested an ACK
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event.Resp.ACK()
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}
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}
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func (event *Event) NACK() {
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if event.Resp != nil { // if they've requested a NACK
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event.Resp.NACK()
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}
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}
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// Resp is just a helper to return the right type of response channel
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func NewResp() Resp {
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resp := make(chan bool)
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return resp
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}
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// ACK sends a true value to resp
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func (resp Resp) ACK() {
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if resp != nil {
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resp <- true
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}
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}
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// NACK sends a false value to resp
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func (resp Resp) NACK() {
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if resp != nil {
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resp <- false
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}
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}
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// Wait waits for any response from a Resp channel and returns it
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func (resp Resp) Wait() bool {
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return <-resp
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}
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// ACKWait waits for a +ive Ack from a Resp channel
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func (resp Resp) ACKWait() {
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for {
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// wait until true value
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if resp.Wait() {
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return
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}
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}
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}
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// get the activity value
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func (event *Event) GetActivity() bool {
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return event.Activity
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}
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