text: /*
   * Copyright (c) 2000-2007 Niels Provos <provos@citi.umich.edu>
   * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
   *
   * 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_INTERNAL_H_INCLUDED_
  #define LOG_INTERNAL_H_INCLUDED_
  
  #include "event2/util.h"
  
  #ifdef __GNUC__
  #define EV_CHECK_FMT(a,b) __attribute__((format(printf, a, b)))
  #define EV_NORETURN __attribute__((noreturn))
  #else
  #define EV_CHECK_FMT(a,b)
  #define EV_NORETURN
  #endif
  
  #define EVENT_ERR_ABORT_ ((int)0xdeaddead)
  
  #define USE_GLOBAL_FOR_DEBUG_LOGGING
  
  #if !defined(EVENT__DISABLE_DEBUG_MODE) || defined(USE_DEBUG)
  #define EVENT_DEBUG_LOGGING_ENABLED
  #endif
  
  #ifdef EVENT_DEBUG_LOGGING_ENABLED
  #ifdef USE_GLOBAL_FOR_DEBUG_LOGGING
  extern ev_uint32_t event_debug_logging_mask_;
  #define event_debug_get_logging_mask_() (event_debug_logging_mask_)
  #else
  ev_uint32_t event_debug_get_logging_mask_(void);
  #endif
  #else
  #define event_debug_get_logging_mask_() (0)
  #endif
  
  void event_err(int eval, const char *fmt, ...) EV_CHECK_FMT(2,3) EV_NORETURN;
  void event_warn(const char *fmt, ...) EV_CHECK_FMT(1,2);
  void event_sock_err(int eval, evutil_socket_t sock, const char *fmt, ...) EV_CHECK_FMT(3,4) EV_NORETURN;
  void event_sock_warn(evutil_socket_t sock, const char *fmt, ...) EV_CHECK_FMT(2,3);
  void event_errx(int eval, const char *fmt, ...) EV_CHECK_FMT(2,3) EV_NORETURN;
  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);
  
  void event_logv_(int severity, const char *errstr, const char *fmt, va_list ap)
  	EV_CHECK_FMT(3,0);
  
  #ifdef EVENT_DEBUG_LOGGING_ENABLED
  #define event_debug(x) do {			\
  	if (event_debug_get_logging_mask_()) {	\
  		event_debugx_ x;		\
  	}					\
  	} while (0)
  #else
  #define event_debug(x) ((void)0)
  #endif
  
  #undef EV_CHECK_FMT
  
  #endif
  