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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*-
eel-debug.c: Eel debugging aids.
Copyright (C) 2000, 2001 Eazel, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this program; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
Author: Darin Adler <darin@eazel.com>
*/
#include <config.h>
#include "eel-debug.h"
#include <glib.h>
#include <signal.h>
#include <stdio.h>
typedef struct
{
gpointer data;
GFreeFunc function;
} ShutdownFunction;
static GList *shutdown_functions;
/* Raise a SIGINT signal to get the attention of the debugger.
* When not running under the debugger, we don't want to stop,
* so we ignore the signal for just the moment that we raise it.
*/
void
eel_stop_in_debugger (void)
{
void (* saved_handler) (int);
saved_handler = signal (SIGINT, SIG_IGN);
raise (SIGINT);
signal (SIGINT, saved_handler);
}
/* Stop in the debugger after running the default log handler.
* This makes certain kinds of messages stop in the debugger
* without making them fatal (you can continue).
*/
static void
log_handler (const char *domain,
GLogLevelFlags level,
const char *message,
gpointer data)
{
g_log_default_handler (domain, level, message, data);
if ((level & (G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING)) != 0)
{
eel_stop_in_debugger ();
}
}
void
eel_make_warnings_and_criticals_stop_in_debugger (void)
{
g_log_set_default_handler (log_handler, NULL);
}
int
eel_get_available_file_descriptor_count (void)
{
int count;
GList *list;
GList *p;
FILE *file;
list = NULL;
for (count = 0; ; count++)
{
file = fopen ("/dev/null", "r");
if (file == NULL)
{
break;
}
list = g_list_prepend (list, file);
}
for (p = list; p != NULL; p = p->next)
{
fclose (p->data);
}
g_list_free (list);
return count;
}
void
eel_debug_shut_down (void)
{
ShutdownFunction *f;
while (shutdown_functions != NULL)
{
f = shutdown_functions->data;
shutdown_functions = g_list_remove (shutdown_functions, f);
f->function (f->data);
g_free (f);
}
}
void
eel_debug_call_at_shutdown (EelFunction function)
{
eel_debug_call_at_shutdown_with_data ((GFreeFunc) function, NULL);
}
void
eel_debug_call_at_shutdown_with_data (GFreeFunc function, gpointer data)
{
ShutdownFunction *f;
f = g_new (ShutdownFunction, 1);
f->data = data;
f->function = function;
shutdown_functions = g_list_prepend (shutdown_functions, f);
}
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