kc3-lang/libevent/evutil.h

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• Hash : 1120f04f
  Author :
  Date : 2007-11-25T21:53:06
  

   r16731@catbus:  nickm | 2007-11-25 16:52:53 -0500
   Replace all fds on non-unix-specific APIs with evutil_socket_t, which is int on unix and intptr_t on win32.
  
  
  svn:r552
  

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• evutil.h

• /*
   * 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
  
  #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 WIN32
  /** Type to hold the output of "socket()" or "accept()".  On Windows, this is
   * an intptr_t; elsewhere, it is an int. */
  #define evutil_socket_t intptr_t
  #else
  #define evutil_socket_t int
  #endif
  
  int evutil_socketpair(int d, int type, int protocol, evutil_socket_t sv[2]);
  int evutil_make_socket_nonblocking(evutil_socket_t 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 __cplusplus
  }
  #endif
  
  #endif /* _EVUTIL_H_ */
  

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