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Optimizations for managing new windows (do not all take effect if

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2002-10-21  Havoc Pennington  <hp@redhat.com>

	Optimizations for managing new windows (do not all take effect if
	METACITY_DEBUG=1). Bug #96404

	* src/keybindings.c (meta_change_keygrab): use error trap nesting
	and conditionalize on meta_is_verbose() to avoid a ton of XSync

	* src/display.c (meta_change_button_grab): ditto

	Throughout: move to new error trap setup to save on XSync calls,
	new setup is:

	* src/errors.c (meta_error_trap_push_with_return): new function,
	an error trap that needs to care about return value and thus
	sync even if an outer trap still exists
	(meta_error_trap_pop_with_return): new function
	(meta_error_trap_pop): add "last_request_was_roundtrip"
	argument allowing us to avoid XSync() if we just did
	a GetProperty or whatever.

	* src/util.c (meta_warning): flush the warning file descriptor

	* src/Makefile.am (INCLUDES): define G_LOG_DOMAIN
This commit is contained in:
Havoc Pennington
2002-10-21 21:44:35 +00:00
committed by Havoc Pennington
parent 37a1e6f57b
commit c6b475b251
21 changed files with 391 additions and 229 deletions
Download Patch File Download Diff File Expand all files Collapse all files

95
src/errors.c
View File

@ -26,6 +26,8 @@
#include <stdlib.h>
#include <gdk/gdk.h>
static int sync_count = 0;
static int x_error_handler (Display *display,
XErrorEvent *error);
static int x_io_error_handler (Display *display);
@ -37,13 +39,20 @@ meta_errors_init (void)
XSetIOErrorHandler (x_io_error_handler);
}
void
meta_error_trap_push (MetaDisplay *display)
static void
meta_error_trap_push_internal (MetaDisplay *display,
gboolean need_sync)
{
/* GDK resets the error handler on each push */
int (* old_error_handler) (Display *,
XErrorEvent *);
if (need_sync)
{
XSync (display->xdisplay, False);
++sync_count;
}
gdk_error_trap_push ();
/* old_error_handler will just be equal to x_error_handler
@ -60,17 +69,23 @@ meta_error_trap_push (MetaDisplay *display)
}
display->error_traps += 1;
meta_topic (META_DEBUG_ERRORS, "%d traps remain\n", display->error_traps);
}
int
meta_error_trap_pop (MetaDisplay *display)
static int
meta_error_trap_pop_internal (MetaDisplay *display,
gboolean need_sync)
{
int result;
g_assert (display->error_traps > 0);
/* just use GDK trap, but we do the sync since GDK doesn't */
XSync (display->xdisplay, False);
if (need_sync)
{
XSync (display->xdisplay, False);
++sync_count;
}
result = gdk_error_trap_pop ();
@ -92,9 +107,75 @@ meta_error_trap_pop (MetaDisplay *display)
display->error_trap_handler = NULL;
}
meta_topic (META_DEBUG_ERRORS, "%d traps\n", display->error_traps);
return result;
}
void
meta_error_trap_push (MetaDisplay *display)
{
meta_error_trap_push_internal (display, FALSE);
}
void
meta_error_trap_pop (MetaDisplay *display,
gboolean last_request_was_roundtrip)
{
gboolean need_sync;
/* we only have to sync when popping the outermost trap */
need_sync = (display->error_traps == 1 && !last_request_was_roundtrip);
if (need_sync)
meta_topic (META_DEBUG_SYNC, "%d: Syncing on error_trap_pop, traps = %d, roundtrip = %d\n",
sync_count, display->error_traps, last_request_was_roundtrip);
display->error_trap_synced_at_last_pop = need_sync || last_request_was_roundtrip;
meta_error_trap_pop_internal (display, need_sync);
}
void
meta_error_trap_push_with_return (MetaDisplay *display)
{
gboolean need_sync;
/* We don't sync on push_with_return if there are no traps
* currently, because we assume that any errors were either covered
* by a previous pop, or were fatal.
*
* More generally, we don't sync if we were synchronized last time
* we popped. This is known to be the case if there are no traps,
* but we also keep a flag so we know whether it's the case otherwise.
*/
if (!display->error_trap_synced_at_last_pop)
need_sync = TRUE;
else
need_sync = FALSE;
if (need_sync)
meta_topic (META_DEBUG_SYNC, "%d: Syncing on error_trap_push_with_return, traps = %d\n",
sync_count, display->error_traps);
meta_error_trap_push_internal (display, FALSE);
}
int
meta_error_trap_pop_with_return (MetaDisplay *display,
gboolean last_request_was_roundtrip)
{
if (!last_request_was_roundtrip)
meta_topic (META_DEBUG_SYNC, "%d: Syncing on error_trap_pop_with_return, traps = %d, roundtrip = %d\n",
sync_count, display->error_traps, last_request_was_roundtrip);
display->error_trap_synced_at_last_pop = TRUE;
return meta_error_trap_pop_internal (display,
!last_request_was_roundtrip);
}
static int
x_error_handler (Display *xdisplay,
XErrorEvent *error)