debug.c revision 9663:ace9a2ac3683 
1/*
2    libparted - a library for manipulating disk partitions
3    Copyright (C) 2000, 2005, 2007 Free Software Foundation, Inc.
4
5    This program is free software; you can redistribute it and/or modify
6    it under the terms of the GNU General Public License as published by
7    the Free Software Foundation; either version 3 of the License, or
8    (at your option) any later version.
9
10    This program is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13    GNU General Public License for more details.
14
15    You should have received a copy of the GNU General Public License
16    along with this program.  If not, see <http://www.gnu.org/licenses/>.
17*/
18
19#include <config.h>
20#include <parted/parted.h>
21#include <parted/debug.h>
22
23#if ENABLE_NLS
24#  include <libintl.h>
25#  define _(String) dgettext (PACKAGE, String)
26#else
27#  define _(String) (String)
28#endif /* ENABLE_NLS */
29
30#ifdef DEBUG
31
32#if HAVE_BACKTRACE
33#include <execinfo.h>
34#endif
35
36static void default_handler ( const int level, const char* file, int line,
37                const char* function, const char* msg );
38static PedDebugHandler* debug_handler = &default_handler;
39
40
41/**
42 * Default debug handler.
43 * Will print all information to stderr.
44 */
45static void default_handler ( const int level, const char* file, int line,
46                const char* function, const char* msg )
47{
48        fprintf ( stderr, "[%d] %s:%d (%s): %s\n",
49                        level, file, line, function, msg );
50}
51
52/**
53 * Send a debug message.
54 * Do not call this directly -- use PED_DEBUG() instead.
55 *
56 * level        log level, 0 ~= "print definitely"
57 */
58void ped_debug ( const int level, const char* file, int line,
59                 const char* function, const char* msg, ... )
60{
61        va_list         arg_list;
62        char*           msg_concat = ped_malloc(8192);
63
64        va_start ( arg_list, msg );
65                vsnprintf ( msg_concat, 8192, msg, arg_list );
66        va_end ( arg_list );
67
68        debug_handler ( level, file, line, function, msg_concat );
69
70        ped_free ( msg_concat );
71}
72
73/*
74 * handler      debug handler; NULL for default handler
75 */
76void ped_debug_set_handler ( PedDebugHandler* handler )
77{
78        debug_handler = ( handler ? handler : default_handler );
79}
80
81/*
82 * Check an assertion.
83 * Do not call this directly -- use PED_ASSERT() instead.
84 */
85int ped_assert ( int cond, const char* cond_text,
86	    const char* file, int line, const char* function )
87{
88	PedExceptionOption	opt;
89
90	if ( cond )
91		return 1;
92
93#if HAVE_BACKTRACE
94	/* Print backtrace stack */
95	void *stack[20];
96	char **strings, **string;
97        int size = backtrace(stack, 20);
98	strings = backtrace_symbols(stack, size);
99
100	if (strings) {
101		printf(_("Backtrace has %d calls on stack:\n"), size);
102		for (string = strings; size > 0; size--, string++)
103			printf("  %d: %s\n", size, *string);
104
105		free(strings);
106	}
107#endif
108
109	/* Throw the exception */
110	opt = ped_exception_throw (
111		PED_EXCEPTION_BUG,
112		PED_EXCEPTION_IGNORE_CANCEL,
113		_("Assertion (%s) at %s:%d in function %s() failed."),
114		cond_text, file, line, function );
115
116	return ( opt == PED_EXCEPTION_IGNORE );
117}
118
119#endif /* DEBUG */
120
121