2 * Copyright (c) 2000-2004 Niels Provos <provos@citi.umich.edu>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 #define WIN32_LEAN_AND_MEAN
38 #undef WIN32_LEAN_AND_MEAN
39 typedef unsigned char u_char;
40 typedef unsigned short u_short;
43 /* Fix so that ppl dont have to run with <sys/queue.h> */
45 #define _EVENT_DEFINED_TQENTRY
46 #define TAILQ_ENTRY(type) \
48 struct type *tqe_next; /* next element */ \
49 struct type **tqe_prev; /* address of previous next element */ \
51 #endif /* !TAILQ_ENTRY */
53 #define _EVENT_DEFINED_RBENTRY
54 #define RB_ENTRY(type) \
56 struct type *rbe_left; /* left element */ \
57 struct type *rbe_right; /* right element */ \
58 struct type *rbe_parent; /* parent element */ \
59 int rbe_color; /* node color */ \
61 #endif /* !RB_ENTRY */
64 * Key-Value pairs. Can be used for HTTP headers but also for
65 * query argument parsing.
68 TAILQ_ENTRY(evkeyval) next;
74 #ifdef _EVENT_DEFINED_TQENTRY
78 #undef _EVENT_DEFINED_TQENTRY
80 TAILQ_HEAD (event_list, event);
81 TAILQ_HEAD (evkeyvalq, evkeyval);
82 #endif /* _EVENT_DEFINED_TQENTRY */
83 #ifdef _EVENT_DEFINED_RBENTRY
85 #undef _EVENT_DEFINED_RBENTRY
86 #endif /* _EVENT_DEFINED_RBENTRY */
90 void *(*init)(struct event_base *);
91 int (*add)(void *, struct event *);
92 int (*del)(void *, struct event *);
93 int (*recalc)(struct event_base *, void *, int);
94 int (*dispatch)(struct event_base *, void *, struct timeval *);
95 void (*dealloc)(struct event_base *, void *);
98 /* These functions deal with buffering input and output */
108 void (*cb)(struct evbuffer *, size_t, size_t, void *);
112 /* Just for error reporting - use other constants otherwise */
113 #define EVBUFFER_READ 0x01
114 #define EVBUFFER_WRITE 0x02
115 #define EVBUFFER_EOF 0x10
116 #define EVBUFFER_ERROR 0x20
117 #define EVBUFFER_TIMEOUT 0x40
120 typedef void (*evbuffercb)(struct bufferevent *, void *);
121 typedef void (*everrorcb)(struct bufferevent *, short what, void *);
123 struct event_watermark {
129 struct event ev_read;
130 struct event ev_write;
132 struct evbuffer *input;
133 struct evbuffer *output;
135 struct event_watermark wm_read;
136 struct event_watermark wm_write;
143 int timeout_read; /* in seconds */
144 int timeout_write; /* in seconds */
146 short enabled; /* events that are currently enabled */
149 struct bufferevent *bufferevent_new(int fd,
150 evbuffercb readcb, evbuffercb writecb, everrorcb errorcb, void *cbarg);
151 int bufferevent_base_set(struct event_base *base, struct bufferevent *bufev);
152 int bufferevent_priority_set(struct bufferevent *bufev, int pri);
153 void bufferevent_free(struct bufferevent *bufev);
154 int bufferevent_write(struct bufferevent *bufev, void *data, size_t size);
155 int bufferevent_write_buffer(struct bufferevent *bufev, struct evbuffer *buf);
156 size_t bufferevent_read(struct bufferevent *bufev, void *data, size_t size);
157 int bufferevent_enable(struct bufferevent *bufev, short event);
158 int bufferevent_disable(struct bufferevent *bufev, short event);
159 void bufferevent_settimeout(struct bufferevent *bufev,
160 int timeout_read, int timeout_write);
162 #define EVBUFFER_LENGTH(x) (x)->off
163 #define EVBUFFER_DATA(x) (x)->buffer
164 #define EVBUFFER_INPUT(x) (x)->input
165 #define EVBUFFER_OUTPUT(x) (x)->output
167 struct evbuffer *evbuffer_new(void);
168 void evbuffer_free(struct evbuffer *);
169 int evbuffer_expand(struct evbuffer *, size_t);
170 int evbuffer_add(struct evbuffer *, const void *, size_t);
171 int evbuffer_remove(struct evbuffer *, void *, size_t);
172 char *evbuffer_readline(struct evbuffer *);
173 int evbuffer_add_buffer(struct evbuffer *, struct evbuffer *);
174 int evbuffer_add_printf(struct evbuffer *, const char *fmt, ...);
175 int evbuffer_add_vprintf(struct evbuffer *, const char *fmt, va_list ap);
176 void evbuffer_drain(struct evbuffer *, size_t);
177 int evbuffer_write(struct evbuffer *, int);
178 int evbuffer_read(struct evbuffer *, int, int);
179 u_char *evbuffer_find(struct evbuffer *, const u_char *, size_t);
180 void evbuffer_setcb(struct evbuffer *, void (*)(struct evbuffer *, size_t, size_t, void *), void *);
183 * Marshaling tagged data - We assume that all tags are inserted in their
184 * numeric order - so that unknown tags will always be higher than the
185 * known ones - and we can just ignore the end of an event buffer.
188 void evtag_init(void);
190 void evtag_marshal(struct evbuffer *evbuf, uint8_t tag, const void *data,
193 void encode_int(struct evbuffer *evbuf, uint32_t number);
195 void evtag_marshal_int(struct evbuffer *evbuf, uint8_t tag, uint32_t integer);
197 void evtag_marshal_string(struct evbuffer *buf, uint8_t tag,
200 void evtag_marshal_timeval(struct evbuffer *evbuf, uint8_t tag,
203 void evtag_test(void);
205 int evtag_unmarshal(struct evbuffer *src, uint8_t *ptag, struct evbuffer *dst);
206 int evtag_peek(struct evbuffer *evbuf, uint8_t *ptag);
207 int evtag_peek_length(struct evbuffer *evbuf, uint32_t *plength);
208 int evtag_payload_length(struct evbuffer *evbuf, uint32_t *plength);
209 int evtag_consume(struct evbuffer *evbuf);
211 int evtag_unmarshal_int(struct evbuffer *evbuf, uint8_t need_tag,
214 int evtag_unmarshal_fixed(struct evbuffer *src, uint8_t need_tag, void *data,
217 int evtag_unmarshal_string(struct evbuffer *evbuf, uint8_t need_tag,
220 int evtag_unmarshal_timeval(struct evbuffer *evbuf, uint8_t need_tag,
221 struct timeval *ptv);