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      1 /*	$NetBSD: log-internal.h,v 1.7 2021/04/10 19:18:45 rillig Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2000-2007 Niels Provos <provos (at) citi.umich.edu>
      5  * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 #ifndef LOG_INTERNAL_H_INCLUDED_
     30 #define LOG_INTERNAL_H_INCLUDED_
     31 
     32 #include "event2/util.h"
     33 
     34 #ifdef __cplusplus
     35 extern "C" {
     36 #endif
     37 
     38 #ifdef __GNUC__
     39 #define EV_CHECK_FMT(a,b) __attribute__((format(printf, a, b)))
     40 #define EV_NORETURN __attribute__((noreturn))
     41 #else
     42 #define EV_CHECK_FMT(a,b)
     43 #define EV_NORETURN
     44 #endif
     45 
     46 #define EVENT_ERR_ABORT_ ((int)0xdeaddead)
     47 
     48 #if !defined(EVENT__DISABLE_DEBUG_MODE) || defined(USE_DEBUG)
     49 #define EVENT_DEBUG_LOGGING_ENABLED
     50 #endif
     51 
     52 #ifdef EVENT_DEBUG_LOGGING_ENABLED
     53 EVENT2_CORE_EXPORT_SYMBOL extern ev_uint32_t event_debug_logging_mask_;
     54 #define event_debug_get_logging_mask_() (event_debug_logging_mask_)
     55 #else
     56 #define event_debug_get_logging_mask_() (0)
     57 #endif
     58 
     59 EVENT2_EXPORT_SYMBOL
     60 void event_err(int eval, const char *fmt, ...) EV_CHECK_FMT(2,3) EV_NORETURN;
     61 EVENT2_EXPORT_SYMBOL
     62 void event_warn(const char *fmt, ...) EV_CHECK_FMT(1,2);
     63 EVENT2_EXPORT_SYMBOL
     64 void event_sock_err(int eval, evutil_socket_t sock, const char *fmt, ...) EV_CHECK_FMT(3,4) EV_NORETURN;
     65 EVENT2_EXPORT_SYMBOL
     66 void event_sock_warn(evutil_socket_t sock, const char *fmt, ...) EV_CHECK_FMT(2,3);
     67 EVENT2_EXPORT_SYMBOL
     68 void event_errx(int eval, const char *fmt, ...) EV_CHECK_FMT(2,3) EV_NORETURN;
     69 EVENT2_EXPORT_SYMBOL
     70 void event_warnx(const char *fmt, ...) EV_CHECK_FMT(1,2);
     71 EVENT2_EXPORT_SYMBOL
     72 void event_msgx(const char *fmt, ...) EV_CHECK_FMT(1,2);
     73 EVENT2_EXPORT_SYMBOL
     74 void event_debugx_(const char *fmt, ...) EV_CHECK_FMT(1,2);
     75 
     76 EVENT2_EXPORT_SYMBOL
     77 void event_logv_(int severity, const char *errstr, const char *fmt, va_list ap)
     78 	EV_CHECK_FMT(3,0);
     79 
     80 #ifdef EVENT_DEBUG_LOGGING_ENABLED
     81 #define event_debug(x) do {			\
     82 	if (event_debug_get_logging_mask_()) {	\
     83 		event_debugx_ x;		\
     84 	}					\
     85 	} while (0)
     86 #else
     87 #define event_debug(x) do {;} while (0)
     88 #endif
     89 
     90 #undef EV_CHECK_FMT
     91 
     92 #ifdef __cplusplus
     93 }
     94 #endif
     95 
     96 #endif /* LOG_INTERNAL_H_INCLUDED_ */
     97