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
|
// Copyright 2016 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/>.
// Contains all the wrappers from the golang.org/x/net/context package to support
// client side context management on mobile platforms.
package geth
import (
"time"
"golang.org/x/net/context"
)
// Context carries a deadline, a cancelation signal, and other values across API
// boundaries.
type Context struct {
context context.Context
cancel context.CancelFunc
}
// NewContext returns a non-nil, empty Context. It is never canceled, has no
// values, and has no deadline. It is typically used by the main function,
// initialization, and tests, and as the top-level Context for incoming requests.
func NewContext() *Context {
return &Context{
context: context.Background(),
}
}
// WithCancel returns a copy of the original context with cancellation mechanism
// included.
//
// Canceling this context releases resources associated with it, so code should
// call cancel as soon as the operations running in this Context complete.
func (c *Context) WithCancel() *Context {
child, cancel := context.WithCancel(c.context)
return &Context{
context: child,
cancel: cancel,
}
}
// WithDeadline returns a copy of the original context with the deadline adjusted
// to be no later than the specified time.
//
// Canceling this context releases resources associated with it, so code should
// call cancel as soon as the operations running in this Context complete.
func (c *Context) WithDeadline(sec int64, nsec int64) *Context {
child, cancel := context.WithDeadline(c.context, time.Unix(sec, nsec))
return &Context{
context: child,
cancel: cancel,
}
}
// WithTimeout returns a copy of the original context with the deadline adjusted
// to be no later than now + the duration specified.
//
// Canceling this context releases resources associated with it, so code should
// call cancel as soon as the operations running in this Context complete.
func (c *Context) WithTimeout(nsec int64) *Context {
child, cancel := context.WithTimeout(c.context, time.Duration(nsec))
return &Context{
context: child,
cancel: cancel,
}
}
|
