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Path: /opt/alt/python27/lib64/python2.7/site-packages/matplotlib/tests/

Viewing File: test_agg.py

import os

def report_memory(i):
    pid = os.getpid()
    a2 = os.popen('ps -p %d -o rss,sz' % pid).readlines()
    print i, '  ', a2[1],
    return int(a2[1].split()[0])

# This test is disabled -- it uses old API. -ADS 2009-09-07
## def test_memleak():
##     """Test agg backend for memory leaks."""
##     from matplotlib.ft2font import FT2Font
##     from numpy.random import rand
##     from matplotlib.backend_bases import GraphicsContextBase
##     from matplotlib.backends._backend_agg import RendererAgg

##     fontname = '/usr/local/share/matplotlib/Vera.ttf'

##     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 )

##         fname = "agg_memleak_%05d.png"
##         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 )

##     # 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