我们从Python开源项目中，提取了以下32个代码示例，用于说明如何使用subprocess._active()。
def test_zombie_fast_process_del(self): # Issue #12650: on Unix, if Popen.__del__() was called before the # process exited, it wouldn't be added to subprocess._active, and would # remain a zombie. # spawn a Popen, and delete its reference before it exits p = subprocess.Popen([sys.executable, "-c", 'import sys, time;' 'time.sleep(0.2)'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) self.addCleanup(p.stdout.close) self.addCleanup(p.stderr.close) ident = id(p) pid = p.pid del p support.gc_collect() # check that p is in the active processes list self.assertIn(ident, [id(o) for o in subprocess._active])
def test_zombie_fast_process_del(self): # Issue #12650: on Unix, if Popen.__del__() was called before the # process exited, it wouldn't be added to subprocess._active, and would # remain a zombie. # spawn a Popen, and delete its reference before it exits p = subprocess.Popen([sys.executable, "-c", 'import sys, time;' 'time.sleep(0.2)'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) self.addCleanup(p.stdout.close) self.addCleanup(p.stderr.close) ident = id(p) pid = p.pid del p # check that p is in the active processes list self.assertIn(ident, [id(o) for o in subprocess._active])
def test_zombie_fast_process_del(self): # Issue #12650: on Unix, if Popen.__del__() was called before the # process exited, it wouldn't be added to subprocess._active, and would # remain a zombie. # spawn a Popen, and delete its reference before it exits p = subprocess.Popen([sys.executable, "-c", 'import sys, time;' 'time.sleep(0.2)'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) self.addCleanup(p.stdout.close) self.addCleanup(p.stderr.close) ident = id(p) pid = p.pid del p test_support.gc_collect() # check that p is in the active processes list self.assertIn(ident, [id(o) for o in subprocess._active])
def tearDown(self): for inst in subprocess._active: inst.wait() subprocess._cleanup() self.assertFalse(subprocess._active, "subprocess._active not empty")
def test_leak_fast_process_del_killed(self): # Issue #12650: on Unix, if Popen.__del__() was called before the # process exited, and the process got killed by a signal, it would never # be removed from subprocess._active, which triggered a FD and memory # leak. # spawn a Popen, delete its reference and kill it p = subprocess.Popen([sys.executable, "-c", 'import time;' 'time.sleep(3)'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) self.addCleanup(p.stdout.close) self.addCleanup(p.stderr.close) ident = id(p) pid = p.pid del p support.gc_collect() os.kill(pid, signal.SIGKILL) # check that p is in the active processes list self.assertIn(ident, [id(o) for o in subprocess._active]) # let some time for the process to exit, and create a new Popen: this # should trigger the wait() of p time.sleep(0.2) with self.assertRaises(EnvironmentError) as c: with subprocess.Popen(['nonexisting_i_hope'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) as proc: pass # p should have been wait()ed on, and removed from the _active list self.assertRaises(OSError, os.waitpid, pid, 0) self.assertNotIn(ident, [id(o) for o in subprocess._active])
def test_leak_fast_process_del_killed(self): # Issue #12650: on Unix, if Popen.__del__() was called before the # process exited, and the process got killed by a signal, it would never # be removed from subprocess._active, which triggered a FD and memory # leak. # spawn a Popen, delete its reference and kill it p = subprocess.Popen([sys.executable, "-c", 'import time;' 'time.sleep(3)'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) self.addCleanup(p.stdout.close) self.addCleanup(p.stderr.close) ident = id(p) pid = p.pid del p os.kill(pid, signal.SIGKILL) # check that p is in the active processes list self.assertIn(ident, [id(o) for o in subprocess._active]) # let some time for the process to exit, and create a new Popen: this # should trigger the wait() of p time.sleep(0.2) with self.assertRaises(EnvironmentError) as c: with subprocess.Popen(['nonexisting_i_hope'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) as proc: pass # p should have been wait()ed on, and removed from the _active list self.assertRaises(OSError, os.waitpid, pid, 0) self.assertNotIn(ident, [id(o) for o in subprocess._active])
def setUp(self): popen2._cleanup() # When the test runs, there shouldn't be any open pipes self.assertFalse(popen2._active, "Active pipes when test starts" + repr([c.cmd for c in popen2._active]))
def tearDown(self): for inst in popen2._active: inst.wait() popen2._cleanup() self.assertFalse(popen2._active, "popen2._active not empty") # The os.popen*() API delegates to the subprocess module (on Unix) import subprocess for inst in subprocess._active: inst.wait() subprocess._cleanup() self.assertFalse(subprocess._active, "subprocess._active not empty") reap_children()
def test_leak_fast_process_del_killed(self): # Issue #12650: on Unix, if Popen.__del__() was called before the # process exited, and the process got killed by a signal, it would never # be removed from subprocess._active, which triggered a FD and memory # leak. # spawn a Popen, delete its reference and kill it p = subprocess.Popen([sys.executable, "-c", 'import time;' 'time.sleep(3)'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) self.addCleanup(p.stdout.close) self.addCleanup(p.stderr.close) ident = id(p) pid = p.pid del p test_support.gc_collect() os.kill(pid, signal.SIGKILL) # check that p is in the active processes list self.assertIn(ident, [id(o) for o in subprocess._active]) # let some time for the process to exit, and create a new Popen: this # should trigger the wait() of p time.sleep(0.2) with self.assertRaises(EnvironmentError) as c: with subprocess.Popen(['nonexisting_i_hope'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) as proc: pass # p should have been wait()ed on, and removed from the _active list self.assertRaises(OSError, os.waitpid, pid, 0) self.assertNotIn(ident, [id(o) for o in subprocess._active])
def test_leak_fast_process_del_killed(self): # Issue #12650: on Unix, if Popen.__del__() was called before the # process exited, and the process got killed by a signal, it would never # be removed from subprocess._active, which triggered a FD and memory # leak. # spawn a Popen, delete its reference and kill it p = subprocess.Popen([sys.executable, "-c", 'import time;' 'time.sleep(3)'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) self.addCleanup(p.stdout.close) self.addCleanup(p.stderr.close) ident = id(p) pid = p.pid del p os.kill(pid, signal.SIGKILL) # check that p is in the active processes list self.assertIn(ident, [id(o) for o in subprocess._active]) # let some time for the process to exit, and create a new Popen: this # should trigger the wait() of p time.sleep(0.2) with self.assertRaises(OSError) as c: with subprocess.Popen(['nonexisting_i_hope'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) as proc: pass # p should have been wait()ed on, and removed from the _active list self.assertRaises(OSError, os.waitpid, pid, 0) self.assertNotIn(ident, [id(o) for o in subprocess._active])
