Lib/test/profilee.py

   1 """
   2 Input for test_profile.py and test_cprofile.py.
   3
   4 IMPORTANT: This stuff is touchy. If you modify anything above the
   5 test class you'll have to regenerate the stats by running the two
   6 test files.
   7
   8 *ALL* NUMBERS in the expected output are relevant.  If you change
   9 the formatting of pstats, please don't just regenerate the expected
  10 output without checking very carefully that not a single number has
  11 changed.
  12 """
  13
  14 import sys
  15
  16 # In order to have reproducible time, we simulate a timer in the global
  17 # variable 'TICKS', which represents simulated time in milliseconds.
  18 # (We can't use a helper function increment the timer since it would be
  19 # included in the profile and would appear to consume all the time.)
  20 TICKS = 42000
  21
  22 def timer():
  23     return TICKS
  24
  25 def testfunc():
  26     # 1 call
  27     # 1000 ticks total: 270 ticks local, 730 ticks in subfunctions
  28     global TICKS
  29     TICKS += 99
  30     helper()                            # 300
  31     helper()                            # 300
  32     TICKS += 171
  33     factorial(14)                       # 130
  34
  35 def factorial(n):
  36     # 23 calls total
  37     # 170 ticks total, 150 ticks local
  38     # 3 primitive calls, 130, 20 and 20 ticks total
  39     # including 116, 17, 17 ticks local
  40     global TICKS
  41     if n > 0:
  42         TICKS += n
  43         return mul(n, factorial(n-1))
  44     else:
  45         TICKS += 11
  46         return 1
  47
  48 def mul(a, b):
  49     # 20 calls
  50     # 1 tick, local
  51     global TICKS
  52     TICKS += 1
  53     return a * b
  54
  55 def helper():
  56     # 2 calls
  57     # 300 ticks total: 20 ticks local, 260 ticks in subfunctions
  58     global TICKS
  59     TICKS += 1
  60     helper1()                           # 30
  61     TICKS += 2
  62     helper1()                           # 30
  63     TICKS += 6
  64     helper2()                           # 50
  65     TICKS += 3
  66     helper2()                           # 50
  67     TICKS += 2
  68     helper2()                           # 50
  69     TICKS += 5
  70     helper2_indirect()                  # 70
  71     TICKS += 1
  72
  73 def helper1():
  74     # 4 calls
  75     # 30 ticks total: 29 ticks local, 1 tick in subfunctions
  76     global TICKS
  77     TICKS += 10
  78     hasattr(C(), "foo")                 # 1
  79     TICKS += 19
  80     lst = []
  81     lst.append(42)                      # 0
  82     sys.exc_info()                      # 0
  83
  84 def helper2_indirect():
  85     helper2()                           # 50
  86     factorial(3)                        # 20
  87
  88 def helper2():
  89     # 8 calls
  90     # 50 ticks local: 39 ticks local, 11 ticks in subfunctions
  91     global TICKS
  92     TICKS += 11
  93     hasattr(C(), "bar")                 # 1
  94     TICKS += 13
  95     subhelper()                         # 10
  96     TICKS += 15
  97
  98 def subhelper():
  99     # 8 calls
 100     # 10 ticks total: 8 ticks local, 2 ticks in subfunctions
 101     global TICKS
 102     TICKS += 2
 103     for i in range(2):                  # 0
 104         try:
 105             C().foo                     # 1 x 2
 106         except AttributeError:
 107             TICKS += 3                  # 3 x 2
 108
 109 class C:
 110     def __getattr__(self, name):
 111         # 28 calls
 112         # 1 tick, local
 113         global TICKS
 114         TICKS += 1
 115         raise AttributeError