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1 /* | |
2 * Copyright (c) 2007 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 #ifndef _EVUTIL_H_ | |
28 #define _EVUTIL_H_ | |
29 | |
30 /** @file evutil.h | |
31 | |
32 Common convenience functions for cross-platform portability and | |
33 related socket manipulations. | |
34 | |
35 */ | |
36 | |
37 #ifdef __cplusplus | |
38 extern "C" { | |
39 #endif | |
40 | |
41 #include "event-config.h" | |
42 #ifdef _EVENT_HAVE_SYS_TIME_H | |
43 #include <sys/time.h> | |
44 #endif | |
45 #ifdef _EVENT_HAVE_STDINT_H | |
46 #include <stdint.h> | |
47 #elif defined(_EVENT_HAVE_INTTYPES_H) | |
48 #include <inttypes.h> | |
49 #endif | |
50 #ifdef _EVENT_HAVE_SYS_TYPES_H | |
51 #include <sys/types.h> | |
52 #endif | |
53 #include <stdarg.h> | |
54 | |
55 #ifdef _EVENT_HAVE_UINT64_T | |
56 #define ev_uint64_t uint64_t | |
57 #define ev_int64_t int64_t | |
58 #elif defined(WIN32) | |
59 #define ev_uint64_t unsigned __int64 | |
60 #define ev_int64_t signed __int64 | |
61 #elif _EVENT_SIZEOF_LONG_LONG == 8 | |
62 #define ev_uint64_t unsigned long long | |
63 #define ev_int64_t long long | |
64 #elif _EVENT_SIZEOF_LONG == 8 | |
65 #define ev_uint64_t unsigned long | |
66 #define ev_int64_t long | |
67 #else | |
68 #error "No way to define ev_uint64_t" | |
69 #endif | |
70 | |
71 #ifdef _EVENT_HAVE_UINT32_T | |
72 #define ev_uint32_t uint32_t | |
73 #elif defined(WIN32) | |
74 #define ev_uint32_t unsigned int | |
75 #elif _EVENT_SIZEOF_LONG == 4 | |
76 #define ev_uint32_t unsigned long | |
77 #elif _EVENT_SIZEOF_INT == 4 | |
78 #define ev_uint32_t unsigned int | |
79 #else | |
80 #error "No way to define ev_uint32_t" | |
81 #endif | |
82 | |
83 #ifdef _EVENT_HAVE_UINT16_T | |
84 #define ev_uint16_t uint16_t | |
85 #elif defined(WIN32) | |
86 #define ev_uint16_t unsigned short | |
87 #elif _EVENT_SIZEOF_INT == 2 | |
88 #define ev_uint16_t unsigned int | |
89 #elif _EVENT_SIZEOF_SHORT == 2 | |
90 #define ev_uint16_t unsigned short | |
91 #else | |
92 #error "No way to define ev_uint16_t" | |
93 #endif | |
94 | |
95 #ifdef _EVENT_HAVE_UINT8_T | |
96 #define ev_uint8_t uint8_t | |
97 #else | |
98 #define ev_uint8_t unsigned char | |
99 #endif | |
100 | |
101 int evutil_socketpair(int d, int type, int protocol, int sv[2]); | |
102 int evutil_make_socket_nonblocking(int sock); | |
103 #ifdef WIN32 | |
104 #define EVUTIL_CLOSESOCKET(s) closesocket(s) | |
105 #else | |
106 #define EVUTIL_CLOSESOCKET(s) close(s) | |
107 #endif | |
108 | |
109 #ifdef WIN32 | |
110 #define EVUTIL_SOCKET_ERROR() WSAGetLastError() | |
111 #define EVUTIL_SET_SOCKET_ERROR(errcode) \ | |
112 do { WSASetLastError(errcode); } while (0) | |
113 #else | |
114 #define EVUTIL_SOCKET_ERROR() (errno) | |
115 #define EVUTIL_SET_SOCKET_ERROR(errcode) \ | |
116 do { errno = (errcode); } while (0) | |
117 #endif | |
118 | |
119 /* | |
120 * Manipulation functions for struct timeval | |
121 */ | |
122 #ifdef _EVENT_HAVE_TIMERADD | |
123 #define evutil_timeradd(tvp, uvp, vvp) timeradd((tvp), (uvp), (vvp)) | |
124 #define evutil_timersub(tvp, uvp, vvp) timersub((tvp), (uvp), (vvp)) | |
125 #else | |
126 #define evutil_timeradd(tvp, uvp, vvp)
\ | |
127 do {
\ | |
128 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;
\ | |
129 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ | |
130 if ((vvp)->tv_usec >= 1000000) {
\ | |
131 (vvp)->tv_sec++;
\ | |
132 (vvp)->tv_usec -= 1000000;
\ | |
133 }
\ | |
134 } while (0) | |
135 #define evutil_timersub(tvp, uvp, vvp)
\ | |
136 do {
\ | |
137 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ | |
138 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ | |
139 if ((vvp)->tv_usec < 0) {
\ | |
140 (vvp)->tv_sec--;
\ | |
141 (vvp)->tv_usec += 1000000;
\ | |
142 }
\ | |
143 } while (0) | |
144 #endif /* !_EVENT_HAVE_HAVE_TIMERADD */ | |
145 | |
146 #ifdef _EVENT_HAVE_TIMERCLEAR | |
147 #define evutil_timerclear(tvp) timerclear(tvp) | |
148 #else | |
149 #define evutil_timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 | |
150 #endif | |
151 | |
152 #define evutil_timercmp(tvp, uvp, cmp)
\ | |
153 (((tvp)->tv_sec == (uvp)->tv_sec) ?
\ | |
154 ((tvp)->tv_usec cmp (uvp)->tv_usec) :
\ | |
155 ((tvp)->tv_sec cmp (uvp)->tv_sec)) | |
156 | |
157 #ifdef _EVENT_HAVE_TIMERISSET | |
158 #define evutil_timerisset(tvp) timerisset(tvp) | |
159 #else | |
160 #define evutil_timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) | |
161 #endif | |
162 | |
163 | |
164 /* big-int related functions */ | |
165 ev_int64_t evutil_strtoll(const char *s, char **endptr, int base); | |
166 | |
167 | |
168 #ifdef _EVENT_HAVE_GETTIMEOFDAY | |
169 #define evutil_gettimeofday(tv, tz) gettimeofday((tv), (tz)) | |
170 #else | |
171 struct timezone; | |
172 int evutil_gettimeofday(struct timeval *tv, struct timezone *tz); | |
173 #endif | |
174 | |
175 int evutil_snprintf(char *buf, size_t buflen, const char *format, ...) | |
176 #ifdef __GNUC__ | |
177 __attribute__((format(printf, 3, 4))) | |
178 #endif | |
179 ; | |
180 int evutil_vsnprintf(char *buf, size_t buflen, const char *format, va_list ap); | |
181 | |
182 #ifdef __cplusplus | |
183 } | |
184 #endif | |
185 | |
186 #endif /* _EVUTIL_H_ */ | |
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