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/*
* Copyright (C) 2017 ~ 2018 Deepin Technology Co., Ltd.
*
* Author: jouyouyun <jouyouwen717@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package dbusnotify
import (
"fmt"
"sync"
"github.com/godbus/dbus"
)
var __conn *dbus.Conn = nil
var __connLock sync.Mutex
var __ruleCounter map[string]int = nil
var __ruleCounterLock sync.Mutex
func getBus() *dbus.Conn {
__connLock.Lock()
defer __connLock.Unlock()
if __conn == nil {
var err error
__conn, err = dbus.SessionBus()
if err != nil {
panic(err)
}
}
return __conn
}
func getRuleCounter() map[string]int {
__ruleCounterLock.Lock()
defer __ruleCounterLock.Unlock()
if __ruleCounter == nil {
__ruleCounter = make(map[string]int)
}
return __ruleCounter
}
func dbusCall(method string, flags dbus.Flags, args ...interface{}) (err error) {
err = getBus().BusObject().Call(method, flags, args...).Err
if err != nil {
fmt.Println(err)
}
return
}
func dbusAddMatch(rule string) (err error) {
ruleCounter := getRuleCounter()
__ruleCounterLock.Lock()
defer __ruleCounterLock.Unlock()
if _, ok := ruleCounter[rule]; !ok {
err = dbusCall("org.freedesktop.DBus.AddMatch", 0, rule)
}
ruleCounter[rule]++
return
}
func dbusRemoveMatch(rule string) (err error) {
ruleCounter := getRuleCounter()
__ruleCounterLock.Lock()
defer __ruleCounterLock.Unlock()
if _, ok := ruleCounter[rule]; !ok {
return
}
ruleCounter[rule]--
if ruleCounter[rule] == 0 {
delete(ruleCounter, rule)
err = dbusCall("org.freedesktop.DBus.RemoveMatch", 0, rule)
}
return
}
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