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libevent

    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: #ifndef _LOG_H_
   28: #define _LOG_H_
   29: 
   30: #ifdef __GNUC__
   31: #define EV_CHECK_FMT(a,b) __attribute__((format(printf, a, b)))
   32: #else
   33: #define EV_CHECK_FMT(a,b)
   34: #endif
   35: 
   36: void event_err(int eval, const char *fmt, ...) EV_CHECK_FMT(2,3);
   37: void event_warn(const char *fmt, ...) EV_CHECK_FMT(1,2);
   38: void event_errx(int eval, const char *fmt, ...) EV_CHECK_FMT(2,3);
   39: void event_warnx(const char *fmt, ...) EV_CHECK_FMT(1,2);
   40: void event_msgx(const char *fmt, ...) EV_CHECK_FMT(1,2);
   41: void _event_debugx(const char *fmt, ...) EV_CHECK_FMT(1,2);
   42: 
   43: #ifdef USE_DEBUG
   44: #define event_debug(x) _event_debugx x
   45: #else
   46: #define event_debug(x) do {;} while (0)
   47: #endif
   48: 
   49: #undef EV_CHECK_FMT
   50: 
   51: #endif