forked from ledgerwatch/erigon
-
Notifications
You must be signed in to change notification settings - Fork 0
/
tx_cacher.go
87 lines (77 loc) · 2.66 KB
/
tx_cacher.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
// Copyright 2018 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 core
import (
"sync"
libcommon "github.com/nebojsa94/erigon/erigon-lib/common"
"github.com/nebojsa94/erigon/common/debug"
"github.com/nebojsa94/erigon/core/types"
)
// txSenderCacherRequest is a request for recovering transaction senders with a
// specific signature scheme and caching it into the transactions themselves.
//
// The inc field defines the number of transactions to skip after each recovery,
// which is used to feed the same underlying input array to different threads but
// ensure they process the early transactions fast.
type txSenderCacherRequest struct {
signer types.Signer
txs []types.Transaction
inc int
}
// TxSenderCacher is a helper structure to concurrently ecrecover transaction
// senders from digital signatures on background threads.
type TxSenderCacher struct {
threads int
tasks chan *txSenderCacherRequest
exitCh chan struct{}
wg *sync.WaitGroup
}
// newTxSenderCacher creates a new transaction sender background cacher and starts
// as many processing goroutines as allowed by the GOMAXPROCS on construction.
func NewTxSenderCacher(threads int) *TxSenderCacher {
cacher := &TxSenderCacher{
tasks: make(chan *txSenderCacherRequest, threads),
threads: threads,
exitCh: make(chan struct{}),
wg: &sync.WaitGroup{},
}
for i := 0; i < threads; i++ {
cacher.wg.Add(1)
go func() {
defer debug.LogPanic()
defer cacher.wg.Done()
cacher.cache()
}()
}
return cacher
}
// cache is an infinite loop, caching transaction senders from various forms of
// data structures.
func (cacher *TxSenderCacher) cache() {
for task := range cacher.tasks {
if err := libcommon.Stopped(cacher.exitCh); err != nil {
return
}
for i := 0; i < len(task.txs); i += task.inc {
task.txs[i].Sender(task.signer)
}
}
}
func (cacher *TxSenderCacher) Close() {
libcommon.SafeClose(cacher.exitCh)
close(cacher.tasks)
cacher.wg.Wait()
}