+++ /dev/null
-# Very rudimentary test of threading module\r
-\r
-import test.test_support\r
-from test.test_support import verbose\r
-import random\r
-import re\r
-import sys\r
-thread = test.test_support.import_module('thread')\r
-threading = test.test_support.import_module('threading')\r
-import time\r
-import unittest\r
-import weakref\r
-import os\r
-import subprocess\r
-\r
-from test import lock_tests\r
-\r
-# A trivial mutable counter.\r
-class Counter(object):\r
- def __init__(self):\r
- self.value = 0\r
- def inc(self):\r
- self.value += 1\r
- def dec(self):\r
- self.value -= 1\r
- def get(self):\r
- return self.value\r
-\r
-class TestThread(threading.Thread):\r
- def __init__(self, name, testcase, sema, mutex, nrunning):\r
- threading.Thread.__init__(self, name=name)\r
- self.testcase = testcase\r
- self.sema = sema\r
- self.mutex = mutex\r
- self.nrunning = nrunning\r
-\r
- def run(self):\r
- delay = random.random() / 10000.0\r
- if verbose:\r
- print 'task %s will run for %.1f usec' % (\r
- self.name, delay * 1e6)\r
-\r
- with self.sema:\r
- with self.mutex:\r
- self.nrunning.inc()\r
- if verbose:\r
- print self.nrunning.get(), 'tasks are running'\r
- self.testcase.assertTrue(self.nrunning.get() <= 3)\r
-\r
- time.sleep(delay)\r
- if verbose:\r
- print 'task', self.name, 'done'\r
-\r
- with self.mutex:\r
- self.nrunning.dec()\r
- self.testcase.assertTrue(self.nrunning.get() >= 0)\r
- if verbose:\r
- print '%s is finished. %d tasks are running' % (\r
- self.name, self.nrunning.get())\r
-\r
-class BaseTestCase(unittest.TestCase):\r
- def setUp(self):\r
- self._threads = test.test_support.threading_setup()\r
-\r
- def tearDown(self):\r
- test.test_support.threading_cleanup(*self._threads)\r
- test.test_support.reap_children()\r
-\r
-\r
-class ThreadTests(BaseTestCase):\r
-\r
- # Create a bunch of threads, let each do some work, wait until all are\r
- # done.\r
- def test_various_ops(self):\r
- # This takes about n/3 seconds to run (about n/3 clumps of tasks,\r
- # times about 1 second per clump).\r
- NUMTASKS = 10\r
-\r
- # no more than 3 of the 10 can run at once\r
- sema = threading.BoundedSemaphore(value=3)\r
- mutex = threading.RLock()\r
- numrunning = Counter()\r
-\r
- threads = []\r
-\r
- for i in range(NUMTASKS):\r
- t = TestThread("<thread %d>"%i, self, sema, mutex, numrunning)\r
- threads.append(t)\r
- self.assertEqual(t.ident, None)\r
- self.assertTrue(re.match('<TestThread\(.*, initial\)>', repr(t)))\r
- t.start()\r
-\r
- if verbose:\r
- print 'waiting for all tasks to complete'\r
- for t in threads:\r
- t.join(NUMTASKS)\r
- self.assertTrue(not t.is_alive())\r
- self.assertNotEqual(t.ident, 0)\r
- self.assertFalse(t.ident is None)\r
- self.assertTrue(re.match('<TestThread\(.*, \w+ -?\d+\)>', repr(t)))\r
- if verbose:\r
- print 'all tasks done'\r
- self.assertEqual(numrunning.get(), 0)\r
-\r
- def test_ident_of_no_threading_threads(self):\r
- # The ident still must work for the main thread and dummy threads.\r
- self.assertFalse(threading.currentThread().ident is None)\r
- def f():\r
- ident.append(threading.currentThread().ident)\r
- done.set()\r
- done = threading.Event()\r
- ident = []\r
- thread.start_new_thread(f, ())\r
- done.wait()\r
- self.assertFalse(ident[0] is None)\r
- # Kill the "immortal" _DummyThread\r
- del threading._active[ident[0]]\r
-\r
- # run with a small(ish) thread stack size (256kB)\r
- def test_various_ops_small_stack(self):\r
- if verbose:\r
- print 'with 256kB thread stack size...'\r
- try:\r
- threading.stack_size(262144)\r
- except thread.error:\r
- if verbose:\r
- print 'platform does not support changing thread stack size'\r
- return\r
- self.test_various_ops()\r
- threading.stack_size(0)\r
-\r
- # run with a large thread stack size (1MB)\r
- def test_various_ops_large_stack(self):\r
- if verbose:\r
- print 'with 1MB thread stack size...'\r
- try:\r
- threading.stack_size(0x100000)\r
- except thread.error:\r
- if verbose:\r
- print 'platform does not support changing thread stack size'\r
- return\r
- self.test_various_ops()\r
- threading.stack_size(0)\r
-\r
- def test_foreign_thread(self):\r
- # Check that a "foreign" thread can use the threading module.\r
- def f(mutex):\r
- # Calling current_thread() forces an entry for the foreign\r
- # thread to get made in the threading._active map.\r
- threading.current_thread()\r
- mutex.release()\r
-\r
- mutex = threading.Lock()\r
- mutex.acquire()\r
- tid = thread.start_new_thread(f, (mutex,))\r
- # Wait for the thread to finish.\r
- mutex.acquire()\r
- self.assertIn(tid, threading._active)\r
- self.assertIsInstance(threading._active[tid], threading._DummyThread)\r
- del threading._active[tid]\r
-\r
- # PyThreadState_SetAsyncExc() is a CPython-only gimmick, not (currently)\r
- # exposed at the Python level. This test relies on ctypes to get at it.\r
- def test_PyThreadState_SetAsyncExc(self):\r
- try:\r
- import ctypes\r
- except ImportError:\r
- if verbose:\r
- print "test_PyThreadState_SetAsyncExc can't import ctypes"\r
- return # can't do anything\r
-\r
- set_async_exc = ctypes.pythonapi.PyThreadState_SetAsyncExc\r
-\r
- class AsyncExc(Exception):\r
- pass\r
-\r
- exception = ctypes.py_object(AsyncExc)\r
-\r
- # First check it works when setting the exception from the same thread.\r
- tid = thread.get_ident()\r
-\r
- try:\r
- result = set_async_exc(ctypes.c_long(tid), exception)\r
- # The exception is async, so we might have to keep the VM busy until\r
- # it notices.\r
- while True:\r
- pass\r
- except AsyncExc:\r
- pass\r
- else:\r
- # This code is unreachable but it reflects the intent. If we wanted\r
- # to be smarter the above loop wouldn't be infinite.\r
- self.fail("AsyncExc not raised")\r
- try:\r
- self.assertEqual(result, 1) # one thread state modified\r
- except UnboundLocalError:\r
- # The exception was raised too quickly for us to get the result.\r
- pass\r
-\r
- # `worker_started` is set by the thread when it's inside a try/except\r
- # block waiting to catch the asynchronously set AsyncExc exception.\r
- # `worker_saw_exception` is set by the thread upon catching that\r
- # exception.\r
- worker_started = threading.Event()\r
- worker_saw_exception = threading.Event()\r
-\r
- class Worker(threading.Thread):\r
- def run(self):\r
- self.id = thread.get_ident()\r
- self.finished = False\r
-\r
- try:\r
- while True:\r
- worker_started.set()\r
- time.sleep(0.1)\r
- except AsyncExc:\r
- self.finished = True\r
- worker_saw_exception.set()\r
-\r
- t = Worker()\r
- t.daemon = True # so if this fails, we don't hang Python at shutdown\r
- t.start()\r
- if verbose:\r
- print " started worker thread"\r
-\r
- # Try a thread id that doesn't make sense.\r
- if verbose:\r
- print " trying nonsensical thread id"\r
- result = set_async_exc(ctypes.c_long(-1), exception)\r
- self.assertEqual(result, 0) # no thread states modified\r
-\r
- # Now raise an exception in the worker thread.\r
- if verbose:\r
- print " waiting for worker thread to get started"\r
- ret = worker_started.wait()\r
- self.assertTrue(ret)\r
- if verbose:\r
- print " verifying worker hasn't exited"\r
- self.assertTrue(not t.finished)\r
- if verbose:\r
- print " attempting to raise asynch exception in worker"\r
- result = set_async_exc(ctypes.c_long(t.id), exception)\r
- self.assertEqual(result, 1) # one thread state modified\r
- if verbose:\r
- print " waiting for worker to say it caught the exception"\r
- worker_saw_exception.wait(timeout=10)\r
- self.assertTrue(t.finished)\r
- if verbose:\r
- print " all OK -- joining worker"\r
- if t.finished:\r
- t.join()\r
- # else the thread is still running, and we have no way to kill it\r
-\r
- def test_limbo_cleanup(self):\r
- # Issue 7481: Failure to start thread should cleanup the limbo map.\r
- def fail_new_thread(*args):\r
- raise thread.error()\r
- _start_new_thread = threading._start_new_thread\r
- threading._start_new_thread = fail_new_thread\r
- try:\r
- t = threading.Thread(target=lambda: None)\r
- self.assertRaises(thread.error, t.start)\r
- self.assertFalse(\r
- t in threading._limbo,\r
- "Failed to cleanup _limbo map on failure of Thread.start().")\r
- finally:\r
- threading._start_new_thread = _start_new_thread\r
-\r
- def test_finalize_runnning_thread(self):\r
- # Issue 1402: the PyGILState_Ensure / _Release functions may be called\r
- # very late on python exit: on deallocation of a running thread for\r
- # example.\r
- try:\r
- import ctypes\r
- except ImportError:\r
- if verbose:\r
- print("test_finalize_with_runnning_thread can't import ctypes")\r
- return # can't do anything\r
-\r
- rc = subprocess.call([sys.executable, "-c", """if 1:\r
- import ctypes, sys, time, thread\r
-\r
- # This lock is used as a simple event variable.\r
- ready = thread.allocate_lock()\r
- ready.acquire()\r
-\r
- # Module globals are cleared before __del__ is run\r
- # So we save the functions in class dict\r
- class C:\r
- ensure = ctypes.pythonapi.PyGILState_Ensure\r
- release = ctypes.pythonapi.PyGILState_Release\r
- def __del__(self):\r
- state = self.ensure()\r
- self.release(state)\r
-\r
- def waitingThread():\r
- x = C()\r
- ready.release()\r
- time.sleep(100)\r
-\r
- thread.start_new_thread(waitingThread, ())\r
- ready.acquire() # Be sure the other thread is waiting.\r
- sys.exit(42)\r
- """])\r
- self.assertEqual(rc, 42)\r
-\r
- def test_finalize_with_trace(self):\r
- # Issue1733757\r
- # Avoid a deadlock when sys.settrace steps into threading._shutdown\r
- p = subprocess.Popen([sys.executable, "-c", """if 1:\r
- import sys, threading\r
-\r
- # A deadlock-killer, to prevent the\r
- # testsuite to hang forever\r
- def killer():\r
- import os, time\r
- time.sleep(2)\r
- print 'program blocked; aborting'\r
- os._exit(2)\r
- t = threading.Thread(target=killer)\r
- t.daemon = True\r
- t.start()\r
-\r
- # This is the trace function\r
- def func(frame, event, arg):\r
- threading.current_thread()\r
- return func\r
-\r
- sys.settrace(func)\r
- """],\r
- stdout=subprocess.PIPE,\r
- stderr=subprocess.PIPE)\r
- self.addCleanup(p.stdout.close)\r
- self.addCleanup(p.stderr.close)\r
- stdout, stderr = p.communicate()\r
- rc = p.returncode\r
- self.assertFalse(rc == 2, "interpreted was blocked")\r
- self.assertTrue(rc == 0,\r
- "Unexpected error: " + repr(stderr))\r
-\r
- def test_join_nondaemon_on_shutdown(self):\r
- # Issue 1722344\r
- # Raising SystemExit skipped threading._shutdown\r
- p = subprocess.Popen([sys.executable, "-c", """if 1:\r
- import threading\r
- from time import sleep\r
-\r
- def child():\r
- sleep(1)\r
- # As a non-daemon thread we SHOULD wake up and nothing\r
- # should be torn down yet\r
- print "Woke up, sleep function is:", sleep\r
-\r
- threading.Thread(target=child).start()\r
- raise SystemExit\r
- """],\r
- stdout=subprocess.PIPE,\r
- stderr=subprocess.PIPE)\r
- self.addCleanup(p.stdout.close)\r
- self.addCleanup(p.stderr.close)\r
- stdout, stderr = p.communicate()\r
- self.assertEqual(stdout.strip(),\r
- "Woke up, sleep function is: <built-in function sleep>")\r
- stderr = re.sub(r"^\[\d+ refs\]", "", stderr, re.MULTILINE).strip()\r
- self.assertEqual(stderr, "")\r
-\r
- def test_enumerate_after_join(self):\r
- # Try hard to trigger #1703448: a thread is still returned in\r
- # threading.enumerate() after it has been join()ed.\r
- enum = threading.enumerate\r
- old_interval = sys.getcheckinterval()\r
- try:\r
- for i in xrange(1, 100):\r
- # Try a couple times at each thread-switching interval\r
- # to get more interleavings.\r
- sys.setcheckinterval(i // 5)\r
- t = threading.Thread(target=lambda: None)\r
- t.start()\r
- t.join()\r
- l = enum()\r
- self.assertNotIn(t, l,\r
- "#1703448 triggered after %d trials: %s" % (i, l))\r
- finally:\r
- sys.setcheckinterval(old_interval)\r
-\r
- def test_no_refcycle_through_target(self):\r
- class RunSelfFunction(object):\r
- def __init__(self, should_raise):\r
- # The links in this refcycle from Thread back to self\r
- # should be cleaned up when the thread completes.\r
- self.should_raise = should_raise\r
- self.thread = threading.Thread(target=self._run,\r
- args=(self,),\r
- kwargs={'yet_another':self})\r
- self.thread.start()\r
-\r
- def _run(self, other_ref, yet_another):\r
- if self.should_raise:\r
- raise SystemExit\r
-\r
- cyclic_object = RunSelfFunction(should_raise=False)\r
- weak_cyclic_object = weakref.ref(cyclic_object)\r
- cyclic_object.thread.join()\r
- del cyclic_object\r
- self.assertEqual(None, weak_cyclic_object(),\r
- msg=('%d references still around' %\r
- sys.getrefcount(weak_cyclic_object())))\r
-\r
- raising_cyclic_object = RunSelfFunction(should_raise=True)\r
- weak_raising_cyclic_object = weakref.ref(raising_cyclic_object)\r
- raising_cyclic_object.thread.join()\r
- del raising_cyclic_object\r
- self.assertEqual(None, weak_raising_cyclic_object(),\r
- msg=('%d references still around' %\r
- sys.getrefcount(weak_raising_cyclic_object())))\r
-\r
-\r
-class ThreadJoinOnShutdown(BaseTestCase):\r
-\r
- def _run_and_join(self, script):\r
- script = """if 1:\r
- import sys, os, time, threading\r
-\r
- # a thread, which waits for the main program to terminate\r
- def joiningfunc(mainthread):\r
- mainthread.join()\r
- print 'end of thread'\r
- \n""" + script\r
-\r
- p = subprocess.Popen([sys.executable, "-c", script], stdout=subprocess.PIPE)\r
- rc = p.wait()\r
- data = p.stdout.read().replace('\r', '')\r
- p.stdout.close()\r
- self.assertEqual(data, "end of main\nend of thread\n")\r
- self.assertFalse(rc == 2, "interpreter was blocked")\r
- self.assertTrue(rc == 0, "Unexpected error")\r
-\r
- def test_1_join_on_shutdown(self):\r
- # The usual case: on exit, wait for a non-daemon thread\r
- script = """if 1:\r
- import os\r
- t = threading.Thread(target=joiningfunc,\r
- args=(threading.current_thread(),))\r
- t.start()\r
- time.sleep(0.1)\r
- print 'end of main'\r
- """\r
- self._run_and_join(script)\r
-\r
-\r
- def test_2_join_in_forked_process(self):\r
- # Like the test above, but from a forked interpreter\r
- import os\r
- if not hasattr(os, 'fork'):\r
- return\r
- script = """if 1:\r
- childpid = os.fork()\r
- if childpid != 0:\r
- os.waitpid(childpid, 0)\r
- sys.exit(0)\r
-\r
- t = threading.Thread(target=joiningfunc,\r
- args=(threading.current_thread(),))\r
- t.start()\r
- print 'end of main'\r
- """\r
- self._run_and_join(script)\r
-\r
- def test_3_join_in_forked_from_thread(self):\r
- # Like the test above, but fork() was called from a worker thread\r
- # In the forked process, the main Thread object must be marked as stopped.\r
- import os\r
- if not hasattr(os, 'fork'):\r
- return\r
- # Skip platforms with known problems forking from a worker thread.\r
- # See http://bugs.python.org/issue3863.\r
- if sys.platform in ('freebsd4', 'freebsd5', 'freebsd6', 'netbsd5',\r
- 'os2emx'):\r
- print >>sys.stderr, ('Skipping test_3_join_in_forked_from_thread'\r
- ' due to known OS bugs on'), sys.platform\r
- return\r
- script = """if 1:\r
- main_thread = threading.current_thread()\r
- def worker():\r
- childpid = os.fork()\r
- if childpid != 0:\r
- os.waitpid(childpid, 0)\r
- sys.exit(0)\r
-\r
- t = threading.Thread(target=joiningfunc,\r
- args=(main_thread,))\r
- print 'end of main'\r
- t.start()\r
- t.join() # Should not block: main_thread is already stopped\r
-\r
- w = threading.Thread(target=worker)\r
- w.start()\r
- """\r
- self._run_and_join(script)\r
-\r
- def assertScriptHasOutput(self, script, expected_output):\r
- p = subprocess.Popen([sys.executable, "-c", script],\r
- stdout=subprocess.PIPE)\r
- rc = p.wait()\r
- data = p.stdout.read().decode().replace('\r', '')\r
- self.assertEqual(rc, 0, "Unexpected error")\r
- self.assertEqual(data, expected_output)\r
-\r
- @unittest.skipUnless(hasattr(os, 'fork'), "needs os.fork()")\r
- def test_4_joining_across_fork_in_worker_thread(self):\r
- # There used to be a possible deadlock when forking from a child\r
- # thread. See http://bugs.python.org/issue6643.\r
-\r
- # Skip platforms with known problems forking from a worker thread.\r
- # See http://bugs.python.org/issue3863.\r
- if sys.platform in ('freebsd4', 'freebsd5', 'freebsd6', 'os2emx'):\r
- raise unittest.SkipTest('due to known OS bugs on ' + sys.platform)\r
-\r
- # The script takes the following steps:\r
- # - The main thread in the parent process starts a new thread and then\r
- # tries to join it.\r
- # - The join operation acquires the Lock inside the thread's _block\r
- # Condition. (See threading.py:Thread.join().)\r
- # - We stub out the acquire method on the condition to force it to wait\r
- # until the child thread forks. (See LOCK ACQUIRED HERE)\r
- # - The child thread forks. (See LOCK HELD and WORKER THREAD FORKS\r
- # HERE)\r
- # - The main thread of the parent process enters Condition.wait(),\r
- # which releases the lock on the child thread.\r
- # - The child process returns. Without the necessary fix, when the\r
- # main thread of the child process (which used to be the child thread\r
- # in the parent process) attempts to exit, it will try to acquire the\r
- # lock in the Thread._block Condition object and hang, because the\r
- # lock was held across the fork.\r
-\r
- script = """if 1:\r
- import os, time, threading\r
-\r
- finish_join = False\r
- start_fork = False\r
-\r
- def worker():\r
- # Wait until this thread's lock is acquired before forking to\r
- # create the deadlock.\r
- global finish_join\r
- while not start_fork:\r
- time.sleep(0.01)\r
- # LOCK HELD: Main thread holds lock across this call.\r
- childpid = os.fork()\r
- finish_join = True\r
- if childpid != 0:\r
- # Parent process just waits for child.\r
- os.waitpid(childpid, 0)\r
- # Child process should just return.\r
-\r
- w = threading.Thread(target=worker)\r
-\r
- # Stub out the private condition variable's lock acquire method.\r
- # This acquires the lock and then waits until the child has forked\r
- # before returning, which will release the lock soon after. If\r
- # someone else tries to fix this test case by acquiring this lock\r
- # before forking instead of resetting it, the test case will\r
- # deadlock when it shouldn't.\r
- condition = w._block\r
- orig_acquire = condition.acquire\r
- call_count_lock = threading.Lock()\r
- call_count = 0\r
- def my_acquire():\r
- global call_count\r
- global start_fork\r
- orig_acquire() # LOCK ACQUIRED HERE\r
- start_fork = True\r
- if call_count == 0:\r
- while not finish_join:\r
- time.sleep(0.01) # WORKER THREAD FORKS HERE\r
- with call_count_lock:\r
- call_count += 1\r
- condition.acquire = my_acquire\r
-\r
- w.start()\r
- w.join()\r
- print('end of main')\r
- """\r
- self.assertScriptHasOutput(script, "end of main\n")\r
-\r
- @unittest.skipUnless(hasattr(os, 'fork'), "needs os.fork()")\r
- def test_5_clear_waiter_locks_to_avoid_crash(self):\r
- # Check that a spawned thread that forks doesn't segfault on certain\r
- # platforms, namely OS X. This used to happen if there was a waiter\r
- # lock in the thread's condition variable's waiters list. Even though\r
- # we know the lock will be held across the fork, it is not safe to\r
- # release locks held across forks on all platforms, so releasing the\r
- # waiter lock caused a segfault on OS X. Furthermore, since locks on\r
- # OS X are (as of this writing) implemented with a mutex + condition\r
- # variable instead of a semaphore, while we know that the Python-level\r
- # lock will be acquired, we can't know if the internal mutex will be\r
- # acquired at the time of the fork.\r
-\r
- # Skip platforms with known problems forking from a worker thread.\r
- # See http://bugs.python.org/issue3863.\r
- if sys.platform in ('freebsd4', 'freebsd5', 'freebsd6', 'os2emx'):\r
- raise unittest.SkipTest('due to known OS bugs on ' + sys.platform)\r
- script = """if True:\r
- import os, time, threading\r
-\r
- start_fork = False\r
-\r
- def worker():\r
- # Wait until the main thread has attempted to join this thread\r
- # before continuing.\r
- while not start_fork:\r
- time.sleep(0.01)\r
- childpid = os.fork()\r
- if childpid != 0:\r
- # Parent process just waits for child.\r
- (cpid, rc) = os.waitpid(childpid, 0)\r
- assert cpid == childpid\r
- assert rc == 0\r
- print('end of worker thread')\r
- else:\r
- # Child process should just return.\r
- pass\r
-\r
- w = threading.Thread(target=worker)\r
-\r
- # Stub out the private condition variable's _release_save method.\r
- # This releases the condition's lock and flips the global that\r
- # causes the worker to fork. At this point, the problematic waiter\r
- # lock has been acquired once by the waiter and has been put onto\r
- # the waiters list.\r
- condition = w._block\r
- orig_release_save = condition._release_save\r
- def my_release_save():\r
- global start_fork\r
- orig_release_save()\r
- # Waiter lock held here, condition lock released.\r
- start_fork = True\r
- condition._release_save = my_release_save\r
-\r
- w.start()\r
- w.join()\r
- print('end of main thread')\r
- """\r
- output = "end of worker thread\nend of main thread\n"\r
- self.assertScriptHasOutput(script, output)\r
-\r
-\r
-class ThreadingExceptionTests(BaseTestCase):\r
- # A RuntimeError should be raised if Thread.start() is called\r
- # multiple times.\r
- def test_start_thread_again(self):\r
- thread = threading.Thread()\r
- thread.start()\r
- self.assertRaises(RuntimeError, thread.start)\r
-\r
- def test_joining_current_thread(self):\r
- current_thread = threading.current_thread()\r
- self.assertRaises(RuntimeError, current_thread.join);\r
-\r
- def test_joining_inactive_thread(self):\r
- thread = threading.Thread()\r
- self.assertRaises(RuntimeError, thread.join)\r
-\r
- def test_daemonize_active_thread(self):\r
- thread = threading.Thread()\r
- thread.start()\r
- self.assertRaises(RuntimeError, setattr, thread, "daemon", True)\r
-\r
-\r
-class LockTests(lock_tests.LockTests):\r
- locktype = staticmethod(threading.Lock)\r
-\r
-class RLockTests(lock_tests.RLockTests):\r
- locktype = staticmethod(threading.RLock)\r
-\r
-class EventTests(lock_tests.EventTests):\r
- eventtype = staticmethod(threading.Event)\r
-\r
-class ConditionAsRLockTests(lock_tests.RLockTests):\r
- # An Condition uses an RLock by default and exports its API.\r
- locktype = staticmethod(threading.Condition)\r
-\r
-class ConditionTests(lock_tests.ConditionTests):\r
- condtype = staticmethod(threading.Condition)\r
-\r
-class SemaphoreTests(lock_tests.SemaphoreTests):\r
- semtype = staticmethod(threading.Semaphore)\r
-\r
-class BoundedSemaphoreTests(lock_tests.BoundedSemaphoreTests):\r
- semtype = staticmethod(threading.BoundedSemaphore)\r
-\r
- @unittest.skipUnless(sys.platform == 'darwin', 'test macosx problem')\r
- def test_recursion_limit(self):\r
- # Issue 9670\r
- # test that excessive recursion within a non-main thread causes\r
- # an exception rather than crashing the interpreter on platforms\r
- # like Mac OS X or FreeBSD which have small default stack sizes\r
- # for threads\r
- script = """if True:\r
- import threading\r
-\r
- def recurse():\r
- return recurse()\r
-\r
- def outer():\r
- try:\r
- recurse()\r
- except RuntimeError:\r
- pass\r
-\r
- w = threading.Thread(target=outer)\r
- w.start()\r
- w.join()\r
- print('end of main thread')\r
- """\r
- expected_output = "end of main thread\n"\r
- p = subprocess.Popen([sys.executable, "-c", script],\r
- stdout=subprocess.PIPE)\r
- stdout, stderr = p.communicate()\r
- data = stdout.decode().replace('\r', '')\r
- self.assertEqual(p.returncode, 0, "Unexpected error")\r
- self.assertEqual(data, expected_output)\r
-\r
-def test_main():\r
- test.test_support.run_unittest(LockTests, RLockTests, EventTests,\r
- ConditionAsRLockTests, ConditionTests,\r
- SemaphoreTests, BoundedSemaphoreTests,\r
- ThreadTests,\r
- ThreadJoinOnShutdown,\r
- ThreadingExceptionTests,\r
- )\r
-\r
-if __name__ == "__main__":\r
- test_main()\r
projects / mirror_edk2.git / blobdiff