Edit
kc3-lang/libevent/evutil.h
Nick Mathewson
- evutil.h
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/* * Copyright (c) 2007 Niels Provos <provos@citi.umich.edu> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _EVUTIL_H_ #define _EVUTIL_H_ /** @file evutil.h Common convenience functions for cross-platform portability and related socket manipulations. */ #ifdef __cplusplus extern "C" { #endif #include <event-config.h> #ifdef _EVENT_HAVE_SYS_TIME_H #include <sys/time.h> #endif int evutil_socketpair(int d, int type, int protocol, int sv[2]); int evutil_make_socket_nonblocking(int sock); #ifdef WIN32 #define EVUTIL_CLOSESOCKET(s) closesocket(s) #else #define EVUTIL_CLOSESOCKET(s) close(s) #endif #ifdef WIN32 #define EVUTIL_SOCKET_ERROR() WSAGetLastError() #define EVUTIL_SET_SOCKET_ERROR(errcode) \ do { WSASetLastError(errcode); } while (0) #else #define EVUTIL_SOCKET_ERROR() (errno) #define EVUTIL_SET_SOCKET_ERROR(errcode) \ do { errno = (errcode); } while (0) #endif /* * Manipulation functions for struct timeval */ #ifdef _EVENT_HAVE_TIMERADD #define evutil_timeradd(tvp, uvp, vvp) timeradd((tvp), (uvp), (vvp)) #define evutil_timersub(tvp, uvp, vvp) timersub((tvp), (uvp), (vvp)) #else #define evutil_timeradd(tvp, uvp, vvp) \ do { \ (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ if ((vvp)->tv_usec >= 1000000) { \ (vvp)->tv_sec++; \ (vvp)->tv_usec -= 1000000; \ } \ } while (0) #define evutil_timersub(tvp, uvp, vvp) \ do { \ (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ if ((vvp)->tv_usec < 0) { \ (vvp)->tv_sec--; \ (vvp)->tv_usec += 1000000; \ } \ } while (0) #endif /* !_EVENT_HAVE_HAVE_TIMERADD */ #ifdef _EVENT_HAVE_TIMERCLEAR #define evutil_timerclear(tvp) timerclear(tvp) #else #define evutil_timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 #endif #ifdef _EVENT_HAVE_TIMERCMP #define evutil_timercmp(tvp, uvp, cmp) timercmp((tvp), (uvp), cmp) #else #define evutil_timercmp(tvp, uvp, cmp) \ (((tvp)->tv_sec == (uvp)->tv_sec) ? \ ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ ((tvp)->tv_sec cmp (uvp)->tv_sec)) #endif #ifdef _EVENT_HAVE_TIMERISSET #define evutil_timerisset(tvp) timerisset(tvp) #else #define evutil_timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) #endif #ifdef _EVENT_HAVE_STDINT_H #include <stdint.h> #define ev_uint64_t uint64_t #define ev_uint32_t uint32_t #define ev_uint16_t uint16_t #define ev_uint8_t uint8_t #elif defined(WIN32) #define ev_uint64_t __uint64_t #define ev_uint32_t unsigned int #define ev_uint16_t unsigned short #define ev_uint8_t unsigned char #endif #ifdef __cplusplus } #endif #endif /* _EVUTIL_H_ */