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| author | Tavian Barnes <tavianator@tavianator.com> | 2014-04-23 18:12:53 -0400 |
|---|---|---|
| committer | Tavian Barnes <tavianator@tavianator.com> | 2014-04-23 22:41:21 -0400 |
| commit | 0acff566213fdddbc8f4561887aced121f82dc26 (patch) | |
| tree | 97620a5ef72efc783d35817e4349a9f8a1d8cff8 /dimension/preview.py | |
| parent | 3ce3ed46f5cd95bfca4f9303c93859fac54476bb (diff) | |
| download | dimension-0acff566213fdddbc8f4561887aced121f82dc26.tar.xz | |
future: Add a race-free way to examine a partial computation.
This allows safe OpenGL previews, for example. dmnsn_future* learned
the dmnsn_future_{pause,resume}() functions which cause all worker
threads to block. render.test now survives Helgrind with no errors.
Diffstat (limited to 'dimension/preview.py')
| -rw-r--r-- | dimension/preview.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/dimension/preview.py b/dimension/preview.py index fd56123..bc8e105 100644 --- a/dimension/preview.py +++ b/dimension/preview.py @@ -1,7 +1,7 @@ #!/usr/bin/env python3 ######################################################################### -# Copyright (C) 2011-2012 Tavian Barnes <tavianator@tavianator.com> # +# Copyright (C) 2011-2014 Tavian Barnes <tavianator@tavianator.com> # # # # This file is part of Dimension. # # # @@ -30,11 +30,14 @@ class Preview(QtOpenGL.QGLWidget): def paintGL(self): try: + self.future.pause() self.canvas.draw_GL() except: self.future.cancel() self.parent().close() raise + finally: + self.future.resume() class PreviewWindow(QtGui.QMainWindow): """Main window for a rendering preview.""" |