added some more memleak unit tests

svn path=/trunk/matplotlib/; revision=427

Author: jdh2358

unit/memleak_hawaii3.py

@@ -0,0 +1,42 @@
+import os, sys, time
+import matplotlib
+matplotlib.use('Agg')
+from matplotlib.matlab import *
+
+
+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()[1])
+
+
+
+# take a memory snapshot on indStart and compare it with indEnd
+indStart, indEnd = 10, 200
+for i in range(indEnd):
+    ind = arange(100)
+    xx = rand(len(ind))
+    figure(1)
+    subplot(221)
+    plot(ind, xx)
+    subplot(222)
+    X = rand(50,50)
+    imshow(X)
+
+    subplot(223)
+    scatter(rand(50), rand(50))
+    subplot(224)
+    pcolor(10*rand(50,50))
+    savefig('tmp%d' % i, dpi = 75)
+    close(1)
+
+    val = report_memory(i)
+    if i==indStart: start = val # wait a few cycles for memory usage to stabilize
+
+end = val
+print 'Average memory consumed per loop: %1.4fk bytes\n' % ((end-start)/float(indEnd-indStart))
+
+"""
+Average memory consumed per loop: 0.0053k bytes
+"""