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annotate Lib/test/test_capi.py @ 79675:c0a2294de787 2.7

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Issue #16199: Backport 2to3 typo fix from 3.2.
author Chris Jerdonek <chris.jerdonek@gmail.com>
date Thu, 11 Oct 2012 16:15:46 -0700
parents cd8d3c2d3bce
children c6ca87fbea39
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
16447
ac52d3727867 Renamed _testXXX to _testcapiXXX. Jack is my hero -- good call!
Tim Peters <tim.peters@gmail.com>
parents: 16413
diff changeset
1 # Run the _testcapi module tests (tests for the Python/C API): by defn,
17495
e526d9248965 Fix typo in comment (the module is now called _testcapi, not _test).
Guido van Rossum <guido@python.org>
parents: 16447
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2 # these are all functions _testcapi exports whose name begins with 'test_'.
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8819867f14ef Patch derived from Trent's 101162: a Python/C API testing framework.
Tim Peters <tim.peters@gmail.com>
parents:
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3
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4 from __future__ import with_statement
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4812f6a7f735 Revert previous checkin on getargs 'L' code. Try to convert all
Martin v. Löwis <martin@v.loewis.de>
parents: 34652
diff changeset
5 import sys
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6 import time
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7 import random
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8 import unittest
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aa0d2d51fbde Get rid of relative imports in all unittests. Now anything that
Barry Warsaw <barry@python.org>
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9 from test import test_support
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967f7bc2dcc8 Issue #7449, part 7: simplify threading detection in test_capi
Victor Stinner <victor.stinner@haypocalc.com>
parents: 58669
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10 try:
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11 import threading
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12 except ImportError:
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13 threading = None
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ac52d3727867 Renamed _testXXX to _testcapiXXX. Jack is my hero -- good call!
Tim Peters <tim.peters@gmail.com>
parents: 16413
diff changeset
14 import _testcapi
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parents:
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15
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16 @unittest.skipUnless(threading, 'Threading required for this test.')
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17 class TestPendingCalls(unittest.TestCase):
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18
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19 def pendingcalls_submit(self, l, n):
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20 def callback():
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21 #this function can be interrupted by thread switching so let's
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22 #use an atomic operation
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23 l.append(None)
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24
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25 for i in range(n):
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26 time.sleep(random.random()*0.02) #0.01 secs on average
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27 #try submitting callback until successful.
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28 #rely on regular interrupt to flush queue if we are
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29 #unsuccessful.
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30 while True:
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31 if _testcapi._pending_threadfunc(callback):
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32 break;
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33
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34 def pendingcalls_wait(self, l, n, context = None):
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35 #now, stick around until l[0] has grown to 10
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36 count = 0;
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37 while len(l) != n:
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38 #this busy loop is where we expect to be interrupted to
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39 #run our callbacks. Note that callbacks are only run on the
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40 #main thread
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41 if False and test_support.verbose:
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42 print "(%i)"%(len(l),),
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43 for i in xrange(1000):
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44 a = i*i
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45 if context and not context.event.is_set():
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46 continue
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47 count += 1
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48 self.assertTrue(count < 10000,
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49 "timeout waiting for %i callbacks, got %i"%(n, len(l)))
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50 if False and test_support.verbose:
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51 print "(%i)"%(len(l),)
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52
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53 def test_pendingcalls_threaded(self):
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54 #do every callback on a separate thread
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55 n = 32 #total callbacks
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56 threads = []
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57 class foo(object):pass
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58 context = foo()
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59 context.l = []
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60 context.n = 2 #submits per thread
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61 context.nThreads = n // context.n
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62 context.nFinished = 0
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63 context.lock = threading.Lock()
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64 context.event = threading.Event()
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65
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66 for i in range(context.nThreads):
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67 t = threading.Thread(target=self.pendingcalls_thread, args = (context,))
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68 t.start()
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69 threads.append(t)
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70
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71 self.pendingcalls_wait(context.l, n, context)
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72
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73 for t in threads:
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74 t.join()
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75
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76 def pendingcalls_thread(self, context):
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77 try:
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78 self.pendingcalls_submit(context.l, context.n)
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79 finally:
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80 with context.lock:
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81 context.nFinished += 1
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82 nFinished = context.nFinished
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83 if False and test_support.verbose:
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84 print "finished threads: ", nFinished
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85 if nFinished == context.nThreads:
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86 context.event.set()
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87
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88 def test_pendingcalls_non_threaded(self):
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89 #again, just using the main thread, likely they will all be dispatched at
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90 #once. It is ok to ask for too many, because we loop until we find a slot.
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91 #the loop can be interrupted to dispatch.
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92 #there are only 32 dispatch slots, so we go for twice that!
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93 l = []
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94 n = 64
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95 self.pendingcalls_submit(l, n)
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96 self.pendingcalls_wait(l, n)
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97
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98
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99 def test_main():
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100
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101 for name in dir(_testcapi):
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102 if name.startswith('test_'):
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103 test = getattr(_testcapi, name)
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104 if test_support.verbose:
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105 print "internal", name
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106 try:
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107 test()
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108 except _testcapi.error:
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109 raise test_support.TestFailed, sys.exc_info()[1]
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110
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111 # some extra thread-state tests driven via _testcapi
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112 def TestThreadState():
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113 if test_support.verbose:
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114 print "auto-thread-state"
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115
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116 idents = []
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117
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118 def callback():
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119 idents.append(thread.get_ident())
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120
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121 _testcapi._test_thread_state(callback)
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122 a = b = callback
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123 time.sleep(1)
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124 # Check our main thread is in the list exactly 3 times.
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125 if idents.count(thread.get_ident()) != 3:
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126 raise test_support.TestFailed, \
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127 "Couldn't find main thread correctly in the list"
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128
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129 if threading:
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130 import thread
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131 import time
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132 TestThreadState()
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133 t=threading.Thread(target=TestThreadState)
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134 t.start()
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135 t.join()
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136
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137 test_support.run_unittest(TestPendingCalls)
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138
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139 if __name__ == "__main__":
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140 test_main()