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kc3-lang/libevent/log.h

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  • Author : Nick Mathewson
    Date : 2007-12-06 18:12:56
    Hash : 3206bbca
    Message : r15171@tombo: nickm | 2007-12-06 12:47:47 -0500 Use GCC attributes (where available) to verify printf type-correctness. Fix some bugs this turned up. svn:r573

  • log.h
  • /*
     * Copyright (c) 2000-2004 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 _LOG_H_
    #define _LOG_H_
    
    #ifdef __GNUC__
    #define EV_CHECK_FMT(a,b) __attribute__((format(printf, a, b)))
    #else
    #define EV_CHECK_FMT(a,b)
    #endif
    
    void event_err(int eval, const char *fmt, ...) EV_CHECK_FMT(2,3);
    void event_warn(const char *fmt, ...) EV_CHECK_FMT(1,2);
    void event_errx(int eval, const char *fmt, ...) EV_CHECK_FMT(2,3);
    void event_warnx(const char *fmt, ...) EV_CHECK_FMT(1,2);
    void event_msgx(const char *fmt, ...) EV_CHECK_FMT(1,2);
    void _event_debugx(const char *fmt, ...) EV_CHECK_FMT(1,2);
    
    #ifdef USE_DEBUG
    #define event_debug(x) _event_debugx x
    #else
    #define event_debug(x) do {;} while (0)
    #endif
    
    #undef EV_CHECK_FMT
    
    #endif