def DISABLED_memleak( self ):
"""Test agg backend for memory leaks."""
fontname = '/usr/local/share/matplotlib/Vera.ttf'
fname = self.outFile( "agg_memleak_%05d.png" )
N = 200
for i in range( N ):
gc = GraphicsContextBase()
gc.set_clip_rectangle( [20, 20, 20, 20] )
o = RendererAgg( 400, 400, 72 )
for j in range( 50 ):
xs = [ 400*int(rand()) for k in range(8) ]
ys = [ 400*int(rand()) for k in range(8) ]
rgb = (1, 0, 0)
pnts = zip( xs, ys )
o.draw_polygon( gc, rgb, pnts )
o.draw_polygon( gc, None, pnts )
for j in range( 50 ):
x = [ 400*int(rand()) for k in range(4) ]
y = [ 400*int(rand()) for k in range(4) ]
o.draw_lines( gc, x, y )
for j in range( 50 ):
args = [ 400*int(rand()) for k in range(4) ]
rgb = (1, 0, 0)
o.draw_rectangle( gc, rgb, *args )
if 1: # add text
font = FT2Font( fontname )
font.clear()
font.set_text( 'hi mom', 60 )
font.set_size( 12, 72 )
o.draw_text_image( font.get_image(), 30, 40, gc )
o.write_png( fname % i )
val = report_memory( i )
if i==1: start = val
end = val
avgMem = (end - start) / float(N)
print 'Average memory consumed per loop: %1.4f\n' % (avgMem)
#TODO: Verify the expected mem usage and approximate tolerance that should be used
self.checkClose( 0.32, avgMem, absTol = 0.1 )
o.draw_polygon(gc, rgb, pnts)
o.draw_polygon(gc, None, pnts)
for j in range(50):
x = [400 * int(rand()) for k in range(4)]
y = [400 * int(rand()) for k in range(4)]
o.draw_lines(gc, x, y)
for j in range(50):
args = [400 * int(rand()) for k in range(4)]
rgb = (1, 0, 0)
o.draw_rectangle(gc, rgb, *args)
if 1: # add text
font = FT2Font(fname)
font.clear()
font.set_text('hi mom', 60)
font.set_size(12, 72)
o.draw_text_image(font.get_image(), 30, 40, gc)
o.write_png('aggtest%d.png' % i)
val = report_memory(i)
if i == 1: start = val
end = val
print 'Average memory consumed per loop: %1.4f\n' % ((end - start) / float(N))
# w/o text and w/o write_png: Average memory consumed per loop: 0.02
# w/o text and w/ write_png : Average memory consumed per loop: 0.3400
# w/ text and w/ write_png : Average memory consumed per loop: 0.32
o.draw_polygon(gc, rgb, pnts)
o.draw_polygon(gc, None, pnts)
for j in range(50):
x = [400*int(rand()) for k in range(4)]
y = [400*int(rand()) for k in range(4)]
o.draw_lines( gc, x, y)
for j in range(50):
args = [400*int(rand()) for k in range(4)]
rgb = (1,0,0)
o.draw_rectangle(gc, rgb, *args)
if 1: # add text
font = FT2Font(fname)
font.clear()
font.set_text('hi mom', 60)
font.set_size(12, 72)
o.draw_text_image(font.get_image(), 30, 40, gc)
o.write_png('aggtest%d.png'%i)
val = report_memory(i)
if i==1: start = val
end = val
print 'Average memory consumed per loop: %1.4f\n' % ((end-start)/float(N))
# w/o text and w/o write_png: Average memory consumed per loop: 0.02
# w/o text and w/ write_png : Average memory consumed per loop: 0.3400
# w/ text and w/ write_png : Average memory consumed per loop: 0.32
