forked from cgrates/cgrates
/
accountlock.go
91 lines (79 loc) · 2.03 KB
/
accountlock.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
/*
Rating system designed to be used in VoIP Carriers World
Copyright (C) 2013 ITsysCOM
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
(at your option) 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 engine
import (
"sync"
)
var AccLock *AccountLock
func init() {
AccLock = NewAccountLock()
}
type AccountLock struct {
queue map[string]chan bool
sync.RWMutex
}
func NewAccountLock() *AccountLock {
return &AccountLock{queue: make(map[string]chan bool)}
}
func (cm *AccountLock) GuardGetCost(name string, handler func() (*CallCost, error)) (reply *CallCost, err error) {
cm.RLock()
lock, exists := AccLock.queue[name]
cm.RUnlock()
if !exists {
cm.Lock()
lock = make(chan bool, 1)
AccLock.queue[name] = lock
cm.Unlock()
}
lock <- true
reply, err = handler()
<-lock
return
}
func (cm *AccountLock) Guard(name string, handler func() (float64, error)) (reply float64, err error) {
cm.RLock()
lock, exists := AccLock.queue[name]
cm.RUnlock()
if !exists {
cm.Lock()
lock = make(chan bool, 1)
AccLock.queue[name] = lock
cm.Unlock()
}
lock <- true
reply, err = handler()
<-lock
return
}
func (cm *AccountLock) GuardMany(names []string, handler func() (float64, error)) (reply float64, err error) {
for _, name := range names {
cm.RLock()
lock, exists := AccLock.queue[name]
cm.RUnlock()
if !exists {
cm.Lock()
lock = make(chan bool, 1)
AccLock.queue[name] = lock
cm.Unlock()
}
lock <- true
}
reply, err = handler()
for _, name := range names {
lock := AccLock.queue[name]
<-lock
}
return
}