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/cvs/libev/event_compat.h
Revision: 1.8
Committed: Wed Feb 16 08:02:51 2011 UTC (13 years, 4 months ago) by root
Content type: text/plain
Branch: MAIN
CVS Tags: EV-rel-4_28, EV-rel-4_29, EV-rel-4_27, EV-rel-4_22, rel-4_33, rel-4_04, rel-4_23, rel-4_22, rel-4_20, rel-4_27, rel-4_25, rel-4_24, rxvt-unicode-rel-9_16, EV-rel-4_31, EV-rel-4_30, EV_rel-4_11, EV_rel-4_10, rel-4_31, rel-4_15, rel-4_11, rel-4_18, rel-4_19, HEAD
Changes since 1.7: +1 -1 lines
Log Message:
ws cleanup, changes

File Contents

# Content
1 /*
2 * Copyright (c) 2000-2004 Niels Provos <provos@citi.umich.edu>
3 * Copyright (c) 2008 Marc Alexander Lehmann <libev@schmorp.de>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31
32 #ifdef _WIN32
33 # define WIN32_LEAN_AND_MEAN
34 # include <windows.h>
35 # undef WIN32_LEAN_AND_MEAN
36 typedef unsigned char u_char;
37 typedef unsigned short u_short;
38 #else
39 # include <sys/types.h>
40 # include <sys/time.h>
41 # include <inttypes.h>
42 #endif
43
44 #include <stdarg.h>
45
46 /* Fix so that ppl dont have to run with <sys/queue.h> */
47 #ifndef TAILQ_ENTRY
48 #define _EVENT_DEFINED_TQENTRY
49 #define TAILQ_ENTRY(type) \
50 struct { \
51 struct type *tqe_next; /* next element */ \
52 struct type **tqe_prev; /* address of previous next element */ \
53 }
54 #endif /* !TAILQ_ENTRY */
55 #ifndef RB_ENTRY
56 #define _EVENT_DEFINED_RBENTRY
57 #define RB_ENTRY(type) \
58 struct { \
59 struct type *rbe_left; /* left element */ \
60 struct type *rbe_right; /* right element */ \
61 struct type *rbe_parent; /* parent element */ \
62 int rbe_color; /* node color */ \
63 }
64 #endif /* !RB_ENTRY */
65
66 /*
67 * Key-Value pairs. Can be used for HTTP headers but also for
68 * query argument parsing.
69 */
70 struct evkeyval {
71 TAILQ_ENTRY(evkeyval) next;
72
73 char *key;
74 char *value;
75 };
76
77 #ifdef _EVENT_DEFINED_TQENTRY
78 #undef TAILQ_ENTRY
79 struct event_list;
80 struct evkeyvalq;
81 #undef _EVENT_DEFINED_TQENTRY
82 #else
83 TAILQ_HEAD (event_list, event);
84 TAILQ_HEAD (evkeyvalq, evkeyval);
85 #endif /* _EVENT_DEFINED_TQENTRY */
86 #ifdef _EVENT_DEFINED_RBENTRY
87 #undef RB_ENTRY
88 #undef _EVENT_DEFINED_RBENTRY
89 #endif /* _EVENT_DEFINED_RBENTRY */
90
91 struct eventop {
92 char *name;
93 void *(*init)(struct event_base *);
94 int (*add)(void *, struct event *);
95 int (*del)(void *, struct event *);
96 int (*recalc)(struct event_base *, void *, int);
97 int (*dispatch)(struct event_base *, void *, struct timeval *);
98 void (*dealloc)(struct event_base *, void *);
99 };
100
101 /* These functions deal with buffering input and output */
102
103 struct evbuffer {
104 u_char *buffer;
105 u_char *orig_buffer;
106
107 size_t misalign;
108 size_t totallen;
109 size_t off;
110
111 void (*cb)(struct evbuffer *, size_t, size_t, void *);
112 void *cbarg;
113 };
114
115 /* Just for error reporting - use other constants otherwise */
116 #define EVBUFFER_READ 0x01
117 #define EVBUFFER_WRITE 0x02
118 #define EVBUFFER_EOF 0x10
119 #define EVBUFFER_ERROR 0x20
120 #define EVBUFFER_TIMEOUT 0x40
121
122 struct bufferevent;
123 typedef void (*evbuffercb)(struct bufferevent *, void *);
124 typedef void (*everrorcb)(struct bufferevent *, short what, void *);
125
126 struct event_watermark {
127 size_t low;
128 size_t high;
129 };
130
131 struct bufferevent {
132 struct event ev_read;
133 struct event ev_write;
134
135 struct evbuffer *input;
136 struct evbuffer *output;
137
138 struct event_watermark wm_read;
139 struct event_watermark wm_write;
140
141 evbuffercb readcb;
142 evbuffercb writecb;
143 everrorcb errorcb;
144 void *cbarg;
145
146 int timeout_read; /* in seconds */
147 int timeout_write; /* in seconds */
148
149 short enabled; /* events that are currently enabled */
150 };
151
152 struct bufferevent *bufferevent_new(int fd,
153 evbuffercb readcb, evbuffercb writecb, everrorcb errorcb, void *cbarg);
154 int bufferevent_base_set(struct event_base *base, struct bufferevent *bufev);
155 int bufferevent_priority_set(struct bufferevent *bufev, int pri);
156 void bufferevent_free(struct bufferevent *bufev);
157 int bufferevent_write(struct bufferevent *bufev, const void *data, size_t size);
158 int bufferevent_write_buffer(struct bufferevent *bufev, struct evbuffer *buf);
159 size_t bufferevent_read(struct bufferevent *bufev, void *data, size_t size);
160 int bufferevent_enable(struct bufferevent *bufev, short event);
161 int bufferevent_disable(struct bufferevent *bufev, short event);
162 void bufferevent_settimeout(struct bufferevent *bufev,
163 int timeout_read, int timeout_write);
164
165 #define EVBUFFER_LENGTH(x) (x)->off
166 #define EVBUFFER_DATA(x) (x)->buffer
167 #define EVBUFFER_INPUT(x) (x)->input
168 #define EVBUFFER_OUTPUT(x) (x)->output
169
170 struct evbuffer *evbuffer_new(void);
171 void evbuffer_free(struct evbuffer *);
172 int evbuffer_expand(struct evbuffer *, size_t);
173 int evbuffer_add(struct evbuffer *, const void *, size_t);
174 int evbuffer_remove(struct evbuffer *, void *, size_t);
175 char *evbuffer_readline(struct evbuffer *);
176 int evbuffer_add_buffer(struct evbuffer *, struct evbuffer *);
177 int evbuffer_add_printf(struct evbuffer *, const char *fmt, ...);
178 int evbuffer_add_vprintf(struct evbuffer *, const char *fmt, va_list ap);
179 void evbuffer_drain(struct evbuffer *, size_t);
180 int evbuffer_write(struct evbuffer *, int);
181 int evbuffer_read(struct evbuffer *, int, int);
182 u_char *evbuffer_find(struct evbuffer *, const u_char *, size_t);
183 void evbuffer_setcb(struct evbuffer *, void (*)(struct evbuffer *, size_t, size_t, void *), void *);
184
185 /*
186 * Marshaling tagged data - We assume that all tags are inserted in their
187 * numeric order - so that unknown tags will always be higher than the
188 * known ones - and we can just ignore the end of an event buffer.
189 */
190
191 void evtag_init(void);
192
193 void evtag_marshal(struct evbuffer *evbuf, uint32_t tag, const void *data,
194 uint32_t len);
195
196 void encode_int(struct evbuffer *evbuf, uint32_t number);
197
198 void evtag_marshal_int(struct evbuffer *evbuf, uint32_t tag, uint32_t integer);
199
200 void evtag_marshal_string(struct evbuffer *buf, uint32_t tag,
201 const char *string);
202
203 void evtag_marshal_timeval(struct evbuffer *evbuf, uint32_t tag,
204 struct timeval *tv);
205
206 int evtag_unmarshal(struct evbuffer *src, uint32_t *ptag, struct evbuffer *dst);
207 int evtag_peek(struct evbuffer *evbuf, uint32_t *ptag);
208 int evtag_peek_length(struct evbuffer *evbuf, uint32_t *plength);
209 int evtag_payload_length(struct evbuffer *evbuf, uint32_t *plength);
210 int evtag_consume(struct evbuffer *evbuf);
211
212 int evtag_unmarshal_int(struct evbuffer *evbuf, uint32_t need_tag,
213 uint32_t *pinteger);
214
215 int evtag_unmarshal_fixed(struct evbuffer *src, uint32_t need_tag, void *data,
216 size_t len);
217
218 int evtag_unmarshal_string(struct evbuffer *evbuf, uint32_t need_tag,
219 char **pstring);
220
221 int evtag_unmarshal_timeval(struct evbuffer *evbuf, uint32_t need_tag,
222 struct timeval *ptv);
223
224 #ifdef __cplusplus
225 }
226 #endif