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1 /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*-
2
3 eel-debug.c: Eel debugging aids.
4
5 Copyright (C) 2000, 2001 Eazel, Inc.
6
7 This program is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public License as
9 published by the Free Software Foundation; either version 2 of the
10 License, or (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Library General Public License for more details.
16
17 You should have received a copy of the GNU Library General Public
18 License along with this program; if not, write to the
19 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA.
21
22 Author: Darin Adler <darin@eazel.com>
23 */
24
25 #include <config.h>
26 #include "eel-debug.h"
27
28 #include <glib.h>
29 #include <signal.h>
30 #include <stdio.h>
31
32 typedef struct {
33 gpointer data;
34 GFreeFunc function;
35 } ShutdownFunction;
36
37 static GList *shutdown_functions;
38
39 /* Raise a SIGINT signal to get the attention of the debugger.
40 * When not running under the debugger, we don't want to stop,
41 * so we ignore the signal for just the moment that we raise it.
42 */
43 static void
44 eel_stop_in_debugger (void)
45 {
46 void (* saved_handler) (int);
47
48 saved_handler = signal (SIGINT, SIG_IGN);
49 raise (SIGINT);
50 signal (SIGINT, saved_handler);
51 }
52
53 /* Stop in the debugger after running the default log handler.
54 * This makes certain kinds of messages stop in the debugger
55 * without making them fatal (you can continue).
56 */
57 static void
58 log_handler (const char *domain,
59 GLogLevelFlags level,
60 const char *message,
61 gpointer data)
62 {
63 g_log_default_handler (domain, level, message, data);
64 if ((level & (G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING)) != 0) {
65 eel_stop_in_debugger ();
66 }
67 }
68
69 void
70 eel_make_warnings_and_criticals_stop_in_debugger (void)
71 {
72 g_log_set_default_handler (log_handler, NULL);
73 }
74
75 void
76 eel_debug_shut_down (void)
77 {
78 ShutdownFunction *f;
79
80 while (shutdown_functions != NULL) {
81 f = shutdown_functions->data;
82 shutdown_functions = g_list_remove (shutdown_functions, f);
83
84 f->function (f->data);
85 g_free (f);
86 }
87 }
88
89 void
90 eel_debug_call_at_shutdown (EelFunction function)
91 {
92 eel_debug_call_at_shutdown_with_data ((GFreeFunc) function, NULL);
93 }
94
95 void
96 eel_debug_call_at_shutdown_with_data (GFreeFunc function, gpointer data)
97 {
98 ShutdownFunction *f;
99
100 f = g_new (ShutdownFunction, 1);
101 f->data = data;
102 f->function = function;
103 shutdown_functions = g_list_prepend (shutdown_functions, f);
104 }