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Stop the font thumbnailer eating all the CPU, and limit the resources to

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2009-03-02  Bastien Nocera  <hadess@hadess.net>

	* font-viewer/Makefile.am:
	* font-viewer/font-thumbnailer.c (main):
	* font-viewer/totem-resources.c (set_resource_limits),
	(time_monitor), (totem_resources_monitor_start),
	(totem_resources_monitor_stop):
	* font-viewer/totem-resources.h: Stop the font thumbnailer
	eating all the CPU, and limit the resources to 30 seconds
	and 256MB of RAM, which should be plenty (Closes: #573795)


svn path=/trunk/; revision=9306
This commit is contained in:
Bastien Nocera 2009-03-02 23:06:10 +00:00 • committed by Bastien Nocera
parent a84019b447
commit f1a29fc6dc
5 changed files with 175 additions and 1 deletions
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123
font-viewer/totem-resources.c Normal file
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/*
* Copyright (C) 2007 Bastien Nocera <hadess@hadess.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* The Totem project hereby grant permission for non-gpl compatible GStreamer
* plugins to be used and distributed together with GStreamer and Totem. This
* permission are above and beyond the permissions granted by the GPL license
* Totem is covered by.
*
* Monday 7th February 2005: Christian Schaller: Add exception clause.
* See license_change file for details.
*
*/
#include "config.h"
#include <glib.h>
#include <glib/gstdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/resource.h>
#include "totem-resources.h"
#define MAX_HELPER_MEMORY (256 * 1024 * 1024) /* 256 MB */
#define MAX_HELPER_SECONDS (15) /* 15 seconds */
#define DEFAULT_SLEEP_TIME (30 * G_USEC_PER_SEC) /* 30 seconds */
static guint sleep_time = DEFAULT_SLEEP_TIME;
static gboolean finished = TRUE;
static void
set_resource_limits (const char *input)
{
struct rlimit limit;
struct stat buf;
rlim_t max;
max = MAX_HELPER_MEMORY;
/* Set the maximum virtual size depending on the size
* of the file to process, as we wouldn't be able to
* mmap it otherwise */
if (input == NULL) {
max = MAX_HELPER_MEMORY;
} else if (g_stat (input, &buf) == 0) {
max = MAX_HELPER_MEMORY + buf.st_size;
} else if (g_str_has_prefix (input, "file://") != FALSE) {
char *file;
file = g_filename_from_uri (input, NULL, NULL);
if (file != NULL && g_stat (file, &buf) == 0)
max = MAX_HELPER_MEMORY + buf.st_size;
g_free (file);
}
limit.rlim_cur = max;
limit.rlim_max = max;
setrlimit (RLIMIT_DATA, &limit);
limit.rlim_cur = MAX_HELPER_SECONDS;
limit.rlim_max = MAX_HELPER_SECONDS;
setrlimit (RLIMIT_CPU, &limit);
}
G_GNUC_NORETURN static gpointer
time_monitor (gpointer data)
{
const char *app_name;
g_usleep (sleep_time);
if (finished != FALSE)
g_thread_exit (NULL);
app_name = g_get_application_name ();
if (app_name == NULL)
app_name = g_get_prgname ();
g_print ("%s couldn't process file: '%s'\n"
"Reason: Took too much time to process.\n",
app_name,
(const char *) data);
exit (0);
}
void
totem_resources_monitor_start (const char *input, gint wall_clock_time)
{
set_resource_limits (input);
if (wall_clock_time < 0)
return;
if (wall_clock_time > 0)
sleep_time = wall_clock_time;
finished = FALSE;
g_thread_create (time_monitor, (gpointer) input, FALSE, NULL);
}
void
totem_resources_monitor_stop (void)
{
finished = TRUE;
}