mirror of
https://github.com/cgrates/cgrates.git
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55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
/*
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Rating system designed to be used in VoIP Carriers World
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Copyright (C) 2012-2015 ITsysCOM
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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 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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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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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package engine
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import (
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"sync"
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)
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// global package variable
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var Guardian = &GuardianLock{queue: make(map[string]chan bool)}
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func NewGuardianLock() *GuardianLock {
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return &GuardianLock{queue: make(map[string]chan bool)}
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}
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type GuardianLock struct {
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queue map[string]chan bool
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mu sync.Mutex
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}
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func (cm *GuardianLock) Guard(handler func() (interface{}, error), names ...string) (reply interface{}, err error) {
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cm.mu.Lock()
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for _, name := range names {
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lock, exists := Guardian.queue[name]
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if !exists {
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lock = make(chan bool, 1)
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Guardian.queue[name] = lock
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}
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lock <- true
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}
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cm.mu.Unlock()
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reply, err = handler()
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for _, name := range names {
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lock := Guardian.queue[name]
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<-lock
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}
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return
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}
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