-
Notifications
You must be signed in to change notification settings - Fork 2
/
pools.go
146 lines (129 loc) · 4.57 KB
/
pools.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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
// SPDX-License-Identifier: MPL-2.0
/*
* Copyright (C) 2024 The Noisy Sockets Authors.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* Portions of this file are based on code originally from wireguard-go,
*
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package transport
import (
"sync"
"sync/atomic"
)
type WaitPool struct {
pool sync.Pool
cond sync.Cond
lock sync.Mutex
count atomic.Uint32
max uint32
}
func NewWaitPool(max uint32, new func() any) *WaitPool {
p := &WaitPool{pool: sync.Pool{New: new}, max: max}
p.cond = sync.Cond{L: &p.lock}
return p
}
func (p *WaitPool) Get() any {
if p.max != 0 {
p.lock.Lock()
for p.count.Load() >= p.max {
p.cond.Wait()
}
p.count.Add(1)
p.lock.Unlock()
}
return p.pool.Get()
}
func (p *WaitPool) Put(x any) {
p.pool.Put(x)
if p.max == 0 {
return
}
p.count.Add(^uint32(0))
p.cond.Signal()
}
func (transport *Transport) PopulatePools() {
transport.pool.inboundElementsContainer = NewWaitPool(PreallocatedBuffersPerPool, func() any {
s := make([]*QueueInboundElement, 0, transport.BatchSize())
return &QueueInboundElementsContainer{elems: s}
})
transport.pool.outboundElementsContainer = NewWaitPool(PreallocatedBuffersPerPool, func() any {
s := make([]*QueueOutboundElement, 0, transport.BatchSize())
return &QueueOutboundElementsContainer{elems: s}
})
transport.pool.messageBuffers = NewWaitPool(PreallocatedBuffersPerPool, func() any {
return new([MaxMessageSize]byte)
})
transport.pool.inboundElements = NewWaitPool(PreallocatedBuffersPerPool, func() any {
return new(QueueInboundElement)
})
transport.pool.outboundElements = NewWaitPool(PreallocatedBuffersPerPool, func() any {
return new(QueueOutboundElement)
})
}
func (transport *Transport) GetInboundElementsContainer() *QueueInboundElementsContainer {
c := transport.pool.inboundElementsContainer.Get().(*QueueInboundElementsContainer)
c.Mutex = sync.Mutex{}
return c
}
func (transport *Transport) PutInboundElementsContainer(c *QueueInboundElementsContainer) {
for i := range c.elems {
c.elems[i] = nil
}
c.elems = c.elems[:0]
transport.pool.inboundElementsContainer.Put(c)
}
func (transport *Transport) GetOutboundElementsContainer() *QueueOutboundElementsContainer {
c := transport.pool.outboundElementsContainer.Get().(*QueueOutboundElementsContainer)
c.Mutex = sync.Mutex{}
return c
}
func (transport *Transport) PutOutboundElementsContainer(c *QueueOutboundElementsContainer) {
for i := range c.elems {
c.elems[i] = nil
}
c.elems = c.elems[:0]
transport.pool.outboundElementsContainer.Put(c)
}
func (transport *Transport) GetMessageBuffer() *[MaxMessageSize]byte {
return transport.pool.messageBuffers.Get().(*[MaxMessageSize]byte)
}
func (transport *Transport) PutMessageBuffer(msg *[MaxMessageSize]byte) {
transport.pool.messageBuffers.Put(msg)
}
func (transport *Transport) GetInboundElement() *QueueInboundElement {
return transport.pool.inboundElements.Get().(*QueueInboundElement)
}
func (transport *Transport) PutInboundElement(elem *QueueInboundElement) {
elem.clearPointers()
transport.pool.inboundElements.Put(elem)
}
func (transport *Transport) GetOutboundElement() *QueueOutboundElement {
return transport.pool.outboundElements.Get().(*QueueOutboundElement)
}
func (transport *Transport) PutOutboundElement(elem *QueueOutboundElement) {
elem.clearPointers()
transport.pool.outboundElements.Put(elem)
}