187 lines
5.4 KiB
C
187 lines
5.4 KiB
C
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/*
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* Copyright (c) 2007 Niels Provos <provos@citi.umich.edu>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _EVUTIL_H_
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#define _EVUTIL_H_
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/** @file evutil.h
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Common convenience functions for cross-platform portability and
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related socket manipulations.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "event-config.h"
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#ifdef _EVENT_HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#ifdef _EVENT_HAVE_STDINT_H
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#include <stdint.h>
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#elif defined(_EVENT_HAVE_INTTYPES_H)
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#include <inttypes.h>
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#endif
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#ifdef _EVENT_HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#include <stdarg.h>
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#ifdef _EVENT_HAVE_UINT64_T
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#define ev_uint64_t uint64_t
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#define ev_int64_t int64_t
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#elif defined(WIN32)
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#define ev_uint64_t unsigned __int64
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#define ev_int64_t signed __int64
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#elif _EVENT_SIZEOF_LONG_LONG == 8
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#define ev_uint64_t unsigned long long
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#define ev_int64_t long long
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#elif _EVENT_SIZEOF_LONG == 8
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#define ev_uint64_t unsigned long
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#define ev_int64_t long
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#else
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#error "No way to define ev_uint64_t"
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#endif
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#ifdef _EVENT_HAVE_UINT32_T
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#define ev_uint32_t uint32_t
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#elif defined(WIN32)
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#define ev_uint32_t unsigned int
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#elif _EVENT_SIZEOF_LONG == 4
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#define ev_uint32_t unsigned long
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#elif _EVENT_SIZEOF_INT == 4
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#define ev_uint32_t unsigned int
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#else
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#error "No way to define ev_uint32_t"
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#endif
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#ifdef _EVENT_HAVE_UINT16_T
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#define ev_uint16_t uint16_t
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#elif defined(WIN32)
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#define ev_uint16_t unsigned short
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#elif _EVENT_SIZEOF_INT == 2
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#define ev_uint16_t unsigned int
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#elif _EVENT_SIZEOF_SHORT == 2
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#define ev_uint16_t unsigned short
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#else
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#error "No way to define ev_uint16_t"
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#endif
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#ifdef _EVENT_HAVE_UINT8_T
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#define ev_uint8_t uint8_t
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#else
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#define ev_uint8_t unsigned char
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#endif
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int evutil_socketpair(int d, int type, int protocol, int sv[2]);
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int evutil_make_socket_nonblocking(int sock);
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#ifdef WIN32
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#define EVUTIL_CLOSESOCKET(s) closesocket(s)
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#else
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#define EVUTIL_CLOSESOCKET(s) close(s)
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#endif
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#ifdef WIN32
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#define EVUTIL_SOCKET_ERROR() WSAGetLastError()
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#define EVUTIL_SET_SOCKET_ERROR(errcode) \
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do { WSASetLastError(errcode); } while (0)
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#else
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#define EVUTIL_SOCKET_ERROR() (errno)
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#define EVUTIL_SET_SOCKET_ERROR(errcode) \
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do { errno = (errcode); } while (0)
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#endif
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/*
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* Manipulation functions for struct timeval
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*/
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#ifdef _EVENT_HAVE_TIMERADD
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#define evutil_timeradd(tvp, uvp, vvp) timeradd((tvp), (uvp), (vvp))
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#define evutil_timersub(tvp, uvp, vvp) timersub((tvp), (uvp), (vvp))
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#else
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#define evutil_timeradd(tvp, uvp, vvp) \
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do { \
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(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
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(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
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if ((vvp)->tv_usec >= 1000000) { \
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(vvp)->tv_sec++; \
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(vvp)->tv_usec -= 1000000; \
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} \
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} while (0)
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#define evutil_timersub(tvp, uvp, vvp) \
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do { \
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(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
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(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
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if ((vvp)->tv_usec < 0) { \
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(vvp)->tv_sec--; \
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(vvp)->tv_usec += 1000000; \
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} \
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} while (0)
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#endif /* !_EVENT_HAVE_HAVE_TIMERADD */
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#ifdef _EVENT_HAVE_TIMERCLEAR
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#define evutil_timerclear(tvp) timerclear(tvp)
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#else
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#define evutil_timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
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#endif
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#define evutil_timercmp(tvp, uvp, cmp) \
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(((tvp)->tv_sec == (uvp)->tv_sec) ? \
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((tvp)->tv_usec cmp (uvp)->tv_usec) : \
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((tvp)->tv_sec cmp (uvp)->tv_sec))
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#ifdef _EVENT_HAVE_TIMERISSET
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#define evutil_timerisset(tvp) timerisset(tvp)
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#else
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#define evutil_timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
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#endif
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/* big-int related functions */
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ev_int64_t evutil_strtoll(const char *s, char **endptr, int base);
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#ifdef _EVENT_HAVE_GETTIMEOFDAY
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#define evutil_gettimeofday(tv, tz) gettimeofday((tv), (tz))
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#else
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struct timezone;
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int evutil_gettimeofday(struct timeval *tv, struct timezone *tz);
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#endif
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int evutil_snprintf(char *buf, size_t buflen, const char *format, ...)
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#ifdef __GNUC__
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__attribute__((format(printf, 3, 4)))
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#endif
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;
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int evutil_vsnprintf(char *buf, size_t buflen, const char *format, va_list ap);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _EVUTIL_H_ */
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