blob: dff83d3491fad8ea6f0a1d2c5acac26154723d27 (
plain) (
blame)
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
|
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package les
import (
"time"
"github.com/ethereum/go-ethereum/common/bitutil"
"github.com/ethereum/go-ethereum/light"
)
const (
// bloomServiceThreads is the number of goroutines used globally by an Ethereum
// instance to service bloombits lookups for all running filters.
bloomServiceThreads = 16
// bloomFilterThreads is the number of goroutines used locally per filter to
// multiplex requests onto the global servicing goroutines.
bloomFilterThreads = 3
// bloomRetrievalBatch is the maximum number of bloom bit retrievals to service
// in a single batch.
bloomRetrievalBatch = 16
// bloomRetrievalWait is the maximum time to wait for enough bloom bit requests
// to accumulate request an entire batch (avoiding hysteresis).
bloomRetrievalWait = time.Microsecond * 100
)
// startBloomHandlers starts a batch of goroutines to accept bloom bit database
// retrievals from possibly a range of filters and serving the data to satisfy.
func (eth *LightEthereum) startBloomHandlers() {
for i := 0; i < bloomServiceThreads; i++ {
go func() {
for {
select {
case <-eth.shutdownChan:
return
case request := <-eth.bloomRequests:
task := <-request
task.Bitsets = make([][]byte, len(task.Sections))
compVectors, err := light.GetBloomBits(task.Context, eth.odr, task.Bit, task.Sections)
if err == nil {
for i, _ := range task.Sections {
if blob, err := bitutil.DecompressBytes(compVectors[i], int(light.BloomTrieFrequency/8)); err == nil {
task.Bitsets[i] = blob
} else {
task.Error = err
}
}
} else {
task.Error = err
}
request <- task
}
}
}()
}
}
const (
// bloomConfirms is the number of confirmation blocks before a bloom section is
// considered probably final and its rotated bits are calculated.
bloomConfirms = 256
// bloomThrottling is the time to wait between processing two consecutive index
// sections. It's useful during chain upgrades to prevent disk overload.
bloomThrottling = 100 * time.Millisecond
)
|
