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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/*
* Copyright (c) 2000-2007 Niels Provos <provos@citi.umich.edu>
* Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef EVENT2_EVENT_COMPAT_H_INCLUDED_
#define EVENT2_EVENT_COMPAT_H_INCLUDED_
/** @file event2/event_compat.h
Potentially non-threadsafe versions of the functions in event.h: provided
only for backwards compatibility.
In the oldest versions of Libevent, event_base was not a first-class
structure. Instead, there was a single event base that every function
manipulated. Later, when separate event bases were added, the old functions
that didn't take an event_base argument needed to work by manipulating the
"current" event base. This could lead to thread-safety issues, and obscure,
hard-to-diagnose bugs.
@deprecated All functions in this file are by definition deprecated.
*/
#include <event2/visibility.h>
#ifdef __cplusplus
extern "C" {
#endif
#include <event2/event-config.h>
#ifdef EVENT__HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef EVENT__HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
/* For int types. */
#include <event2/util.h>
/**
Initialize the event API.
The event API needs to be initialized with event_init() before it can be
used. Sets the global current base that gets used for events that have no
base associated with them.
@deprecated This function is deprecated because it replaces the "current"
event_base, and is totally unsafe for multithreaded use. The replacement
is event_base_new().
@see event_base_set(), event_base_new()
*/
EVENT2_EXPORT_SYMBOL
struct event_base *event_init(void);
/**
Loop to process events.
Like event_base_dispatch(), but uses the "current" base.
@deprecated This function is deprecated because it is easily confused by
multiple calls to event_init(), and because it is not safe for
multithreaded use. The replacement is event_base_dispatch().
@see event_base_dispatch(), event_init()
*/
EVENT2_EXPORT_SYMBOL
int event_dispatch(void);
/**
Handle events.
This function behaves like event_base_loop(), but uses the "current" base
@deprecated This function is deprecated because it uses the event base from
the last call to event_init, and is therefore not safe for multithreaded
use. The replacement is event_base_loop().
@see event_base_loop(), event_init()
*/
EVENT2_EXPORT_SYMBOL
int event_loop(int);
/**
Exit the event loop after the specified time.
This function behaves like event_base_loopexit(), except that it uses the
"current" base.
@deprecated This function is deprecated because it uses the event base from
the last call to event_init, and is therefore not safe for multithreaded
use. The replacement is event_base_loopexit().
@see event_init, event_base_loopexit()
*/
EVENT2_EXPORT_SYMBOL
int event_loopexit(const struct timeval *);
/**
Abort the active event_loop() immediately.
This function behaves like event_base_loopbreakt(), except that it uses the
"current" base.
@deprecated This function is deprecated because it uses the event base from
the last call to event_init, and is therefore not safe for multithreaded
use. The replacement is event_base_loopbreak().
@see event_base_loopbreak(), event_init()
*/
EVENT2_EXPORT_SYMBOL
int event_loopbreak(void);
/**
Schedule a one-time event to occur.
@deprecated This function is obsolete, and has been replaced by
event_base_once(). Its use is deprecated because it relies on the
"current" base configured by event_init().
@see event_base_once()
*/
EVENT2_EXPORT_SYMBOL
int event_once(evutil_socket_t , short,
void (*)(evutil_socket_t, short, void *), void *, const struct timeval *);
/**
Get the kernel event notification mechanism used by Libevent.
@deprecated This function is obsolete, and has been replaced by
event_base_get_method(). Its use is deprecated because it relies on the
"current" base configured by event_init().
@see event_base_get_method()
*/
EVENT2_EXPORT_SYMBOL
const char *event_get_method(void);
/**
Set the number of different event priorities.
@deprecated This function is deprecated because it is easily confused by
multiple calls to event_init(), and because it is not safe for
multithreaded use. The replacement is event_base_priority_init().
@see event_base_priority_init()
*/
EVENT2_EXPORT_SYMBOL
int event_priority_init(int);
/**
Prepare an event structure to be added.
@deprecated event_set() is not recommended for new code, because it requires
a subsequent call to event_base_set() to be safe under most circumstances.
Use event_assign() or event_new() instead.
*/
EVENT2_EXPORT_SYMBOL
void event_set(struct event *, evutil_socket_t, short, void (*)(evutil_socket_t, short, void *), void *);
#define evtimer_set(ev, cb, arg) event_set((ev), -1, 0, (cb), (arg))
#define evsignal_set(ev, x, cb, arg) \
event_set((ev), (x), EV_SIGNAL|EV_PERSIST, (cb), (arg))
/**
@name timeout_* macros
@deprecated These macros are deprecated because their naming is inconsistent
with the rest of Libevent. Use the evtimer_* macros instead.
@{
*/
#define timeout_add(ev, tv) event_add((ev), (tv))
#define timeout_set(ev, cb, arg) event_set((ev), -1, 0, (cb), (arg))
#define timeout_del(ev) event_del(ev)
#define timeout_pending(ev, tv) event_pending((ev), EV_TIMEOUT, (tv))
#define timeout_initialized(ev) event_initialized(ev)
/**@}*/
/**
@name signal_* macros
@deprecated These macros are deprecated because their naming is inconsistent
with the rest of Libevent. Use the evsignal_* macros instead.
@{
*/
#define signal_add(ev, tv) event_add((ev), (tv))
#define signal_set(ev, x, cb, arg) \
event_set((ev), (x), EV_SIGNAL|EV_PERSIST, (cb), (arg))
#define signal_del(ev) event_del(ev)
#define signal_pending(ev, tv) event_pending((ev), EV_SIGNAL, (tv))
#define signal_initialized(ev) event_initialized(ev)
/**@}*/
#ifndef EVENT_FD
/* These macros are obsolete; use event_get_fd and event_get_signal instead. */
#define EVENT_FD(ev) ((int)event_get_fd(ev))
#define EVENT_SIGNAL(ev) event_get_signal(ev)
#endif
#ifdef __cplusplus
}
#endif
#endif /* EVENT2_EVENT_COMPAT_H_INCLUDED_ */
|
