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/cvs/libev/event_compat.h
Revision: 1.4
Committed: Mon Nov 12 18:36:42 2007 UTC (16 years, 8 months ago) by root
Content type: text/plain
Branch: MAIN
Changes since 1.3: +1 -1 lines
Log Message:
workaround for solaris 9's lack of standard C language header files

File Contents

# User Rev Content
1 root 1.1 /*
2     * Copyright (c) 2000-2004 Niels Provos <provos@citi.umich.edu>
3     * All rights reserved.
4     *
5     * Redistribution and use in source and binary forms, with or without
6     * modification, are permitted provided that the following conditions
7     * are met:
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.
15     *
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.
26     */
27     #ifdef __cplusplus
28     extern "C" {
29     #endif
30    
31 root 1.3 #ifndef WIN32
32 root 1.2 #include <sys/types.h>
33 root 1.3 #endif
34 root 1.1 #include <sys/time.h>
35 root 1.4 #include <inttypes.h>
36 root 1.1 #include <stdarg.h>
37    
38     #ifdef WIN32
39     #define WIN32_LEAN_AND_MEAN
40     #include <windows.h>
41     #undef WIN32_LEAN_AND_MEAN
42     typedef unsigned char u_char;
43     typedef unsigned short u_short;
44     #endif
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, 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, uint8_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, uint8_t tag, uint32_t integer);
199    
200     void evtag_marshal_string(struct evbuffer *buf, uint8_t tag,
201     const char *string);
202    
203     void evtag_marshal_timeval(struct evbuffer *evbuf, uint8_t tag,
204     struct timeval *tv);
205    
206     void evtag_test(void);
207    
208     int evtag_unmarshal(struct evbuffer *src, uint8_t *ptag, struct evbuffer *dst);
209     int evtag_peek(struct evbuffer *evbuf, uint8_t *ptag);
210     int evtag_peek_length(struct evbuffer *evbuf, uint32_t *plength);
211     int evtag_payload_length(struct evbuffer *evbuf, uint32_t *plength);
212     int evtag_consume(struct evbuffer *evbuf);
213    
214     int evtag_unmarshal_int(struct evbuffer *evbuf, uint8_t need_tag,
215     uint32_t *pinteger);
216    
217     int evtag_unmarshal_fixed(struct evbuffer *src, uint8_t need_tag, void *data,
218     size_t len);
219    
220     int evtag_unmarshal_string(struct evbuffer *evbuf, uint8_t need_tag,
221     char **pstring);
222    
223     int evtag_unmarshal_timeval(struct evbuffer *evbuf, uint8_t need_tag,
224     struct timeval *ptv);
225    
226     #ifdef __cplusplus
227     }
228     #endif