Author: dmeyer
Date: Sun Mar 2 10:50:48 2008
New Revision: 3146
Log:
add some more findings
Modified:
trunk/WIP/clutter-test.py
Modified: trunk/WIP/clutter-test.py
==============================================================================
--- trunk/WIP/clutter-test.py (original)
+++ trunk/WIP/clutter-test.py Sun Mar 2 10:50:48 2008
@@ -6,6 +6,17 @@
import clutter
import gobject
+def clutter_access():
+ def decorator(func):
+ def newfunc(*args, **kwargs):
+ clutter.threads_enter()
+ try:
+ return func(*args, **kwargs)
+ finally:
+ clutter.threads_leave()
+ return newfunc
+ return decorator
+
class BehaviourRotate (clutter.Behaviour):
__gtype_name__ = 'BehaviourRotate'
def __init__ (self, alpha=None):
@@ -27,15 +38,12 @@
def key_press(stages, event):
print 'exit'
sys.exit(0)
-
[EMAIL PROTECTED](kaa.GOBJECT)
+
def do_stuff ():
- # clutter is not thread safe. They claim they are, but they are
- # not. So better change clutter stuff in the GOBJECT thread.
- stage = clutter.Stage()
- stage.set_size(800, 600)
- stage.set_color(clutter.Color(0xcc, 0xcc, 0xcc, 0xff))
- stage.connect('key-press-event', key_press)
+
+ # create rectangle, animations and timeline. This should be thread safe
+ # at this point because the objects have no connection to other clutter
+ # objects yet.
rect = clutter.Rectangle()
rect.set_position(0, 0)
@@ -66,18 +74,35 @@
r_behaviour = BehaviourRotate(alpha)
r_behaviour.apply(rect)
- stage.add(rect)
- stage.show()
-
+ # this should be thread safe because I guess it is a glib timer which
+ # is safe to add from a thread (I hope)
timeline.start()
+
+ # adding the rect to the stage is critical. In fact, every manipulation
+ # of the stage is.
+ do_thread_critical_stuff(rect)
# return all animation objects to prevent the gc from deleting them
return o_behaviour, p_behaviour, r_behaviour
+# clutter_access will use threads_enter and threads_leave to protect
+# clutter data structures. It would also be possible to use
+# @kaa.threaded(kaa.GOBJECT)
[EMAIL PROTECTED]()
+def do_thread_critical_stuff(rect):
+ stage = clutter.Stage()
+ stage.add(rect)
@kaa.threaded(kaa.GOBJECT)
def clutter_init():
clutter.threads_init()
clutter.init()
+ stage = clutter.Stage()
+ stage.set_size(800, 600)
+ stage.set_color(clutter.Color(0xcc, 0xcc, 0xcc, 0xff))
+ stage.connect('key-press-event', key_press)
+ # This MUST be called from the glib thread, the clutter_access decorator
+ # does not work.
+ stage.show()
def block():
# a long running function that should not stop the animations
-------------------------------------------------------------------------
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