log-internal.h revision 290001 
1/*
2 * Copyright (c) 2000-2007 Niels Provos <provos@citi.umich.edu>
3 * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
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_INTERNAL_H_INCLUDED_
28#define LOG_INTERNAL_H_INCLUDED_
29
30#include "event2/util.h"
31
32#ifdef __GNUC__
33#define EV_CHECK_FMT(a,b) __attribute__((format(printf, a, b)))
34#define EV_NORETURN __attribute__((noreturn))
35#else
36#define EV_CHECK_FMT(a,b)
37#define EV_NORETURN
38#endif
39
40#define EVENT_ERR_ABORT_ ((int)0xdeaddead)
41
42#define USE_GLOBAL_FOR_DEBUG_LOGGING
43
44#if !defined(EVENT__DISABLE_DEBUG_MODE) || defined(USE_DEBUG)
45#define EVENT_DEBUG_LOGGING_ENABLED
46#endif
47
48#ifdef EVENT_DEBUG_LOGGING_ENABLED
49#ifdef USE_GLOBAL_FOR_DEBUG_LOGGING
50extern ev_uint32_t event_debug_logging_mask_;
51#define event_debug_get_logging_mask_() (event_debug_logging_mask_)
52#else
53ev_uint32_t event_debug_get_logging_mask_(void);
54#endif
55#else
56#define event_debug_get_logging_mask_() (0)
57#endif
58
59void event_err(int eval, const char *fmt, ...) EV_CHECK_FMT(2,3) EV_NORETURN;
60void event_warn(const char *fmt, ...) EV_CHECK_FMT(1,2);
61void event_sock_err(int eval, evutil_socket_t sock, const char *fmt, ...) EV_CHECK_FMT(3,4) EV_NORETURN;
62void event_sock_warn(evutil_socket_t sock, const char *fmt, ...) EV_CHECK_FMT(2,3);
63void event_errx(int eval, const char *fmt, ...) EV_CHECK_FMT(2,3) EV_NORETURN;
64void event_warnx(const char *fmt, ...) EV_CHECK_FMT(1,2);
65void event_msgx(const char *fmt, ...) EV_CHECK_FMT(1,2);
66void event_debugx_(const char *fmt, ...) EV_CHECK_FMT(1,2);
67
68void event_logv_(int severity, const char *errstr, const char *fmt, va_list ap)
69	EV_CHECK_FMT(3,0);
70
71#ifdef EVENT_DEBUG_LOGGING_ENABLED
72#define event_debug(x) do {			\
73	if (event_debug_get_logging_mask_()) {	\
74		event_debugx_ x;		\
75	}					\
76	} while (0)
77#else
78#define event_debug(x) ((void)0)
79#endif
80
81#undef EV_CHECK_FMT
82
83#endif
84