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mutter-performance-source/src/core/util.c
2021-11-21 20:53:33 +00:00

786 lines
17 KiB
C

/*
* Copyright (C) 2001 Havoc Pennington
* Copyright (C) 2005 Elijah Newren
*
* 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, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:util
* @title: Utility functions
* @short_description: Miscellaneous utility functions
*/
#define _POSIX_C_SOURCE 200112L /* for fdopen() */
#include "config.h"
#include "core/util-private.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <X11/Xlib.h> /* must explicitly be included for Solaris; #326746 */
#include <X11/Xutil.h> /* Just for the definition of the various gravities */
#ifdef HAVE_SYS_PRCTL
#include <sys/prctl.h>
#endif
#include "clutter/clutter-mutter.h"
#include "cogl/cogl.h"
#include "meta/common.h"
#include "meta/main.h"
static const GDebugKey meta_debug_keys[] = {
{ "focus", META_DEBUG_FOCUS },
{ "workarea", META_DEBUG_WORKAREA },
{ "stack", META_DEBUG_STACK },
{ "sm", META_DEBUG_SM },
{ "events", META_DEBUG_EVENTS },
{ "window-state", META_DEBUG_WINDOW_STATE },
{ "window-ops", META_DEBUG_WINDOW_OPS },
{ "geometry", META_DEBUG_GEOMETRY },
{ "placement", META_DEBUG_PLACEMENT },
{ "ping", META_DEBUG_PING },
{ "keybindings", META_DEBUG_KEYBINDINGS },
{ "sync", META_DEBUG_SYNC },
{ "startup", META_DEBUG_STARTUP },
{ "prefs", META_DEBUG_PREFS },
{ "groups", META_DEBUG_GROUPS },
{ "resizing", META_DEBUG_RESIZING },
{ "shapes", META_DEBUG_SHAPES },
{ "edge-resistance", META_DEBUG_EDGE_RESISTANCE },
{ "dbus", META_DEBUG_DBUS },
{ "input", META_DEBUG_INPUT },
{ "wayland", META_DEBUG_WAYLAND },
{ "kms", META_DEBUG_KMS },
{ "screen-cast", META_DEBUG_SCREEN_CAST },
{ "remote-desktop", META_DEBUG_REMOTE_DESKTOP },
{ "backend", META_DEBUG_BACKEND },
{ "render", META_DEBUG_RENDER },
};
#ifdef WITH_VERBOSE_MODE
static void
meta_topic_real_valist (MetaDebugTopic topic,
const char *format,
va_list args) G_GNUC_PRINTF(2, 0);
#endif
static gint verbose_topics = 0;
static gboolean is_wayland_compositor = FALSE;
static int debug_paint_flags = 0;
#ifdef WITH_VERBOSE_MODE
static FILE* logfile = NULL;
static void
ensure_logfile (void)
{
if (logfile == NULL && g_getenv ("MUTTER_USE_LOGFILE"))
{
char *filename = NULL;
char *tmpl;
int fd;
GError *err;
tmpl = g_strdup_printf ("mutter-%d-debug-log-XXXXXX",
(int) getpid ());
err = NULL;
fd = g_file_open_tmp (tmpl,
&filename,
&err);
g_free (tmpl);
if (err != NULL)
{
meta_warning ("Failed to open debug log: %s",
err->message);
g_error_free (err);
return;
}
logfile = fdopen (fd, "w");
if (logfile == NULL)
{
meta_warning ("Failed to fdopen() log file %s: %s",
filename, strerror (errno));
close (fd);
}
else
{
g_printerr ("Opened log file %s", filename);
}
g_free (filename);
}
}
#endif
gboolean
meta_is_verbose (void)
{
return verbose_topics != 0;
}
void
meta_set_verbose (gboolean setting)
{
#ifndef WITH_VERBOSE_MODE
if (setting)
meta_fatal (_("Mutter was compiled without support for verbose mode"));
#endif
if (setting)
meta_add_verbose_topic (META_DEBUG_VERBOSE);
else
meta_remove_verbose_topic (META_DEBUG_VERBOSE);
}
/**
* meta_add_verbose_topic:
* @topic: Topic for which logging will be started
*
* Ensure log messages for the given topic @topic
* will be printed.
*/
void
meta_add_verbose_topic (MetaDebugTopic topic)
{
if (verbose_topics == META_DEBUG_VERBOSE)
return;
ensure_logfile ();
if (topic == META_DEBUG_VERBOSE)
verbose_topics = META_DEBUG_VERBOSE;
else
verbose_topics |= topic;
}
/**
* meta_remove_verbose_topic:
* @topic: Topic for which logging will be stopped
*
* Stop printing log messages for the given topic @topic. Note
* that this method does not stack with meta_add_verbose_topic();
* i.e. if two calls to meta_add_verbose_topic() for the same
* topic are made, one call to meta_remove_verbose_topic() will
* remove it.
*/
void
meta_remove_verbose_topic (MetaDebugTopic topic)
{
if (topic == META_DEBUG_VERBOSE)
verbose_topics = 0;
else
verbose_topics &= ~topic;
}
void
meta_init_debug_utils (void)
{
const char *debug_env;
#ifdef HAVE_SYS_PRCTL
prctl (PR_SET_DUMPABLE, 1);
#endif
if (g_getenv ("MUTTER_VERBOSE"))
meta_set_verbose (TRUE);
debug_env = g_getenv ("MUTTER_DEBUG");
if (debug_env)
{
MetaDebugTopic topics;
topics = g_parse_debug_string (debug_env,
meta_debug_keys,
G_N_ELEMENTS (meta_debug_keys));
meta_add_verbose_topic (topics);
}
}
gboolean
meta_is_wayland_compositor (void)
{
return is_wayland_compositor;
}
void
meta_set_is_wayland_compositor (gboolean value)
{
is_wayland_compositor = value;
}
char *
meta_g_utf8_strndup (const gchar *src,
gsize n)
{
const gchar *s = src;
while (n && *s)
{
s = g_utf8_next_char (s);
n--;
}
return g_strndup (src, s - src);
}
static int
utf8_fputs (const char *str,
FILE *f)
{
char *l;
int retval;
l = g_locale_from_utf8 (str, -1, NULL, NULL, NULL);
if (l == NULL)
retval = fputs (str, f); /* just print it anyway, better than nothing */
else
retval = fputs (l, f);
g_free (l);
return retval;
}
#ifdef WITH_VERBOSE_MODE
void
meta_verbose_real (const char *format, ...)
{
va_list args;
va_start (args, format);
meta_topic_real_valist (META_DEBUG_VERBOSE, format, args);
va_end (args);
}
const char *
meta_topic_to_string (MetaDebugTopic topic)
{
switch (topic)
{
case META_DEBUG_FOCUS:
return "FOCUS";
case META_DEBUG_WORKAREA:
return "WORKAREA";
case META_DEBUG_STACK:
return "STACK";
case META_DEBUG_SM:
return "SM";
case META_DEBUG_EVENTS:
return "EVENTS";
case META_DEBUG_WINDOW_STATE:
return "WINDOW_STATE";
case META_DEBUG_WINDOW_OPS:
return "WINDOW_OPS";
case META_DEBUG_PLACEMENT:
return "PLACEMENT";
case META_DEBUG_GEOMETRY:
return "GEOMETRY";
case META_DEBUG_PING:
return "PING";
case META_DEBUG_KEYBINDINGS:
return "KEYBINDINGS";
case META_DEBUG_SYNC:
return "SYNC";
case META_DEBUG_STARTUP:
return "STARTUP";
case META_DEBUG_PREFS:
return "PREFS";
case META_DEBUG_GROUPS:
return "GROUPS";
case META_DEBUG_RESIZING:
return "RESIZING";
case META_DEBUG_SHAPES:
return "SHAPES";
case META_DEBUG_EDGE_RESISTANCE:
return "EDGE_RESISTANCE";
case META_DEBUG_DBUS:
return "DBUS";
case META_DEBUG_INPUT:
return "INPUT";
case META_DEBUG_WAYLAND:
return "WAYLAND";
case META_DEBUG_KMS:
return "KMS";
case META_DEBUG_SCREEN_CAST:
return "SCREEN_CAST";
case META_DEBUG_REMOTE_DESKTOP:
return "REMOTE_DESKTOP";
case META_DEBUG_BACKEND:
return "BACKEND";
case META_DEBUG_RENDER:
return "RENDER";
case META_DEBUG_VERBOSE:
return "VERBOSE";
}
return "WM";
}
static int sync_count = 0;
gboolean
meta_is_topic_enabled (MetaDebugTopic topic)
{
if (verbose_topics == 0)
return FALSE;
if (topic == META_DEBUG_VERBOSE && verbose_topics != META_DEBUG_VERBOSE)
return FALSE;
return !!(verbose_topics & topic);
}
static void
meta_topic_real_valist (MetaDebugTopic topic,
const char *format,
va_list args)
{
gchar *str;
FILE *out;
g_return_if_fail (format != NULL);
if (!meta_is_topic_enabled (topic))
return;
str = g_strdup_vprintf (format, args);
out = logfile ? logfile : stderr;
fprintf (out, "%s: ", meta_topic_to_string (topic));
if (topic == META_DEBUG_SYNC)
{
++sync_count;
fprintf (out, "%d: ", sync_count);
}
utf8_fputs (str, out);
utf8_fputs ("\n", out);
fflush (out);
g_free (str);
}
void
meta_topic_real (MetaDebugTopic topic,
const char *format,
...)
{
va_list args;
va_start (args, format);
meta_topic_real_valist (topic, format, args);
va_end (args);
}
#endif /* WITH_VERBOSE_MODE */
void
meta_bug (const char *format, ...)
{
va_list args;
gchar *str;
FILE *out;
g_return_if_fail (format != NULL);
va_start (args, format);
str = g_strdup_vprintf (format, args);
va_end (args);
#ifdef WITH_VERBOSE_MODE
out = logfile ? logfile : stderr;
#else
out = stderr;
#endif
utf8_fputs ("Bug in window manager: ", out);
utf8_fputs (str, out);
utf8_fputs ("\n", out);
fflush (out);
g_free (str);
/* stop us in a debugger */
abort ();
}
void
meta_warning (const char *format, ...)
{
va_list args;
gchar *str;
FILE *out;
g_return_if_fail (format != NULL);
va_start (args, format);
str = g_strdup_vprintf (format, args);
va_end (args);
#ifdef WITH_VERBOSE_MODE
out = logfile ? logfile : stderr;
#else
out = stderr;
#endif
utf8_fputs ("Window manager warning: ", out);
utf8_fputs (str, out);
utf8_fputs ("\n", out);
fflush (out);
g_free (str);
}
void
meta_fatal (const char *format, ...)
{
va_list args;
gchar *str;
FILE *out;
g_warn_if_fail (format);
if (!format)
meta_exit (META_EXIT_ERROR);
va_start (args, format);
str = g_strdup_vprintf (format, args);
va_end (args);
#ifdef WITH_VERBOSE_MODE
out = logfile ? logfile : stderr;
#else
out = stderr;
#endif
utf8_fputs ("Window manager error: ", out);
utf8_fputs (str, out);
utf8_fputs ("\n", out);
fflush (out);
g_free (str);
meta_exit (META_EXIT_ERROR);
}
void
meta_exit (MetaExitCode code)
{
exit (code);
}
gint
meta_unsigned_long_equal (gconstpointer v1,
gconstpointer v2)
{
return *((const gulong*) v1) == *((const gulong*) v2);
}
guint
meta_unsigned_long_hash (gconstpointer v)
{
gulong val = * (const gulong *) v;
/* I'm not sure this works so well. */
#if GLIB_SIZEOF_LONG > 4
return (guint) (val ^ (val >> 32));
#else
return val;
#endif
}
const char*
meta_gravity_to_string (MetaGravity gravity)
{
switch (gravity)
{
case META_GRAVITY_NORTH_WEST:
return "META_GRAVITY_NORTH_WEST";
break;
case META_GRAVITY_NORTH:
return "META_GRAVITY_NORTH";
break;
case META_GRAVITY_NORTH_EAST:
return "META_GRAVITY_NORTH_EAST";
break;
case META_GRAVITY_WEST:
return "META_GRAVITY_WEST";
break;
case META_GRAVITY_CENTER:
return "META_GRAVITY_CENTER";
break;
case META_GRAVITY_EAST:
return "META_GRAVITY_EAST";
break;
case META_GRAVITY_SOUTH_WEST:
return "META_GRAVITY_SOUTH_WEST";
break;
case META_GRAVITY_SOUTH:
return "META_GRAVITY_SOUTH";
break;
case META_GRAVITY_SOUTH_EAST:
return "META_GRAVITY_SOUTH_EAST";
break;
case META_GRAVITY_STATIC:
return "META_GRAVITY_STATIC";
break;
default:
return "META_GRAVITY_NORTH_WEST";
break;
}
}
char*
meta_external_binding_name_for_action (guint keybinding_action)
{
return g_strdup_printf ("external-grab-%u", keybinding_action);
}
/* Command line arguments are passed in the locale encoding; in almost
* all cases, we'd hope that is UTF-8 and no conversion is necessary.
* If it's not UTF-8, then it's possible that the message isn't
* representable in the locale encoding.
*/
static void
append_argument (GPtrArray *args,
const char *arg)
{
char *locale_arg = g_locale_from_utf8 (arg, -1, NULL, NULL, NULL);
/* This is cheesy, but it's better to have a few ???'s in the dialog
* for an unresponsive application than no dialog at all appear */
if (!locale_arg)
locale_arg = g_strdup ("???");
g_ptr_array_add (args, locale_arg);
}
/**
* meta_show_dialog: (skip)
* @type: type of dialog
* @message: message
* @timeout: timeout
* @display: display
* @ok_text: text for Ok button
* @cancel_text: text for Cancel button
* @icon_name: icon name
* @transient_for: window XID of parent
* @columns: columns
* @entries: entries
*
*/
GPid
meta_show_dialog (const char *type,
const char *message,
const char *timeout,
const char *display,
const char *ok_text,
const char *cancel_text,
const char *icon_name,
const int transient_for,
GSList *columns,
GSList *entries)
{
GError *error = NULL;
GSList *tmp;
GPid child_pid;
GPtrArray *args;
args = g_ptr_array_new ();
append_argument (args, "zenity");
append_argument (args, type);
if (display)
{
append_argument (args, "--display");
append_argument (args, display);
}
append_argument (args, "--class");
append_argument (args, "mutter-dialog");
append_argument (args, "--title");
append_argument (args, "");
append_argument (args, "--text");
append_argument (args, message);
if (timeout)
{
append_argument (args, "--timeout");
append_argument (args, timeout);
}
if (ok_text)
{
append_argument (args, "--ok-label");
append_argument (args, ok_text);
}
if (cancel_text)
{
append_argument (args, "--cancel-label");
append_argument (args, cancel_text);
}
if (icon_name)
{
append_argument (args, "--icon-name");
append_argument (args, icon_name);
}
tmp = columns;
while (tmp)
{
append_argument (args, "--column");
append_argument (args, tmp->data);
tmp = tmp->next;
}
tmp = entries;
while (tmp)
{
append_argument (args, tmp->data);
tmp = tmp->next;
}
if (transient_for)
{
gchar *env = g_strdup_printf("%d", transient_for);
setenv ("WINDOWID", env, 1);
g_free (env);
append_argument (args, "--modal");
}
g_ptr_array_add (args, NULL); /* NULL-terminate */
g_spawn_async (
"/",
(gchar**) args->pdata,
NULL,
G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD,
NULL, NULL,
&child_pid,
&error
);
if (transient_for)
unsetenv ("WINDOWID");
g_ptr_array_free (args, TRUE);
if (error)
{
meta_warning ("%s", error->message);
g_error_free (error);
}
return child_pid;
}
MetaLocaleDirection
meta_get_locale_direction (void)
{
switch (gtk_get_locale_direction ())
{
case GTK_TEXT_DIR_LTR:
return META_LOCALE_DIRECTION_LTR;
case GTK_TEXT_DIR_RTL:
return META_LOCALE_DIRECTION_RTL;
default:
g_assert_not_reached ();
return 0;
}
}
char *
meta_generate_random_id (GRand *rand,
int length)
{
char *id;
int i;
/* Generate a random string of printable ASCII characters. */
id = g_new0 (char, length + 1);
for (i = 0; i < length; i++)
id[i] = (char) g_rand_int_range (rand, 32, 127);
return id;
}
void
meta_add_clutter_debug_flags (ClutterDebugFlag debug_flags,
ClutterDrawDebugFlag draw_flags,
ClutterPickDebugFlag pick_flags)
{
clutter_add_debug_flags (debug_flags, draw_flags, pick_flags);
}
void
meta_remove_clutter_debug_flags (ClutterDebugFlag debug_flags,
ClutterDrawDebugFlag draw_flags,
ClutterPickDebugFlag pick_flags)
{
clutter_remove_debug_flags (debug_flags, draw_flags, pick_flags);
}
/**
* meta_get_clutter_debug_flags:
* @debug_flags: (out) (optional): return location for debug flags
* @draw_flags: (out) (optional): return location for draw debug flags
* @pick_flags: (out) (optional): return location for pick debug flags
*/
void
meta_get_clutter_debug_flags (ClutterDebugFlag *debug_flags,
ClutterDrawDebugFlag *draw_flags,
ClutterPickDebugFlag *pick_flags)
{
clutter_get_debug_flags (debug_flags, draw_flags, pick_flags);
}
void
meta_add_debug_paint_flag (MetaDebugPaintFlag flag)
{
debug_paint_flags |= flag;
}
void
meta_remove_debug_paint_flag (MetaDebugPaintFlag flag)
{
debug_paint_flags &= ~flag;
}
MetaDebugPaintFlag
meta_get_debug_paint_flags (void)
{
return debug_paint_flags;
}