Vladimir Matveev | c24c6c2 | 2019-01-08 01:58:25 -0800 | [diff] [blame] | 1 | import errno |
Victor Stinner | d6debb2 | 2017-03-27 16:05:26 +0200 | [diff] [blame] | 2 | import os |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 3 | import random |
Guido van Rossum | 4f17e3e | 1995-03-16 15:07:38 +0000 | [diff] [blame] | 4 | import signal |
Victor Stinner | 1151710 | 2014-07-29 23:31:34 +0200 | [diff] [blame] | 5 | import socket |
Antoine Pitrou | f7d090c | 2017-06-29 16:40:14 +0200 | [diff] [blame] | 6 | import statistics |
Christian Heimes | 4fbc72b | 2008-03-22 00:47:35 +0000 | [diff] [blame] | 7 | import subprocess |
Victor Stinner | d6debb2 | 2017-03-27 16:05:26 +0200 | [diff] [blame] | 8 | import sys |
| 9 | import time |
| 10 | import unittest |
| 11 | from test import support |
Berker Peksag | ce64391 | 2015-05-06 06:33:17 +0300 | [diff] [blame] | 12 | from test.support.script_helper import assert_python_ok, spawn_python |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 13 | try: |
Victor Stinner | 56e8c29 | 2014-07-21 12:30:22 +0200 | [diff] [blame] | 14 | import _testcapi |
| 15 | except ImportError: |
| 16 | _testcapi = None |
Christian Heimes | c06950e | 2008-02-28 21:17:00 +0000 | [diff] [blame] | 17 | |
Guido van Rossum | cc5a91d | 1997-04-16 00:29:15 +0000 | [diff] [blame] | 18 | |
Giampaolo Rodola' | e09fb71 | 2014-04-04 15:34:17 +0200 | [diff] [blame] | 19 | class GenericTests(unittest.TestCase): |
| 20 | |
| 21 | def test_enums(self): |
| 22 | for name in dir(signal): |
| 23 | sig = getattr(signal, name) |
| 24 | if name in {'SIG_DFL', 'SIG_IGN'}: |
| 25 | self.assertIsInstance(sig, signal.Handlers) |
| 26 | elif name in {'SIG_BLOCK', 'SIG_UNBLOCK', 'SIG_SETMASK'}: |
| 27 | self.assertIsInstance(sig, signal.Sigmasks) |
| 28 | elif name.startswith('SIG') and not name.startswith('SIG_'): |
| 29 | self.assertIsInstance(sig, signal.Signals) |
| 30 | elif name.startswith('CTRL_'): |
| 31 | self.assertIsInstance(sig, signal.Signals) |
| 32 | self.assertEqual(sys.platform, "win32") |
| 33 | |
| 34 | |
Brian Curtin | 3f004b1 | 2010-08-06 19:34:52 +0000 | [diff] [blame] | 35 | @unittest.skipIf(sys.platform == "win32", "Not valid on Windows") |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 36 | class PosixTests(unittest.TestCase): |
Christian Heimes | 4fbc72b | 2008-03-22 00:47:35 +0000 | [diff] [blame] | 37 | def trivial_signal_handler(self, *args): |
| 38 | pass |
| 39 | |
Thomas Wouters | ed03b41 | 2007-08-28 21:37:11 +0000 | [diff] [blame] | 40 | def test_out_of_range_signal_number_raises_error(self): |
| 41 | self.assertRaises(ValueError, signal.getsignal, 4242) |
| 42 | |
Thomas Wouters | ed03b41 | 2007-08-28 21:37:11 +0000 | [diff] [blame] | 43 | self.assertRaises(ValueError, signal.signal, 4242, |
Christian Heimes | 4fbc72b | 2008-03-22 00:47:35 +0000 | [diff] [blame] | 44 | self.trivial_signal_handler) |
Thomas Wouters | ed03b41 | 2007-08-28 21:37:11 +0000 | [diff] [blame] | 45 | |
Antoine Pietri | 5d2a27d | 2018-03-12 14:42:34 +0100 | [diff] [blame] | 46 | self.assertRaises(ValueError, signal.strsignal, 4242) |
| 47 | |
Thomas Wouters | ed03b41 | 2007-08-28 21:37:11 +0000 | [diff] [blame] | 48 | def test_setting_signal_handler_to_none_raises_error(self): |
| 49 | self.assertRaises(TypeError, signal.signal, |
| 50 | signal.SIGUSR1, None) |
| 51 | |
Christian Heimes | 4fbc72b | 2008-03-22 00:47:35 +0000 | [diff] [blame] | 52 | def test_getsignal(self): |
| 53 | hup = signal.signal(signal.SIGHUP, self.trivial_signal_handler) |
Giampaolo Rodola' | e09fb71 | 2014-04-04 15:34:17 +0200 | [diff] [blame] | 54 | self.assertIsInstance(hup, signal.Handlers) |
Ezio Melotti | 19f2aeb | 2010-11-21 01:30:29 +0000 | [diff] [blame] | 55 | self.assertEqual(signal.getsignal(signal.SIGHUP), |
| 56 | self.trivial_signal_handler) |
Christian Heimes | 4fbc72b | 2008-03-22 00:47:35 +0000 | [diff] [blame] | 57 | signal.signal(signal.SIGHUP, hup) |
Ezio Melotti | 19f2aeb | 2010-11-21 01:30:29 +0000 | [diff] [blame] | 58 | self.assertEqual(signal.getsignal(signal.SIGHUP), hup) |
Christian Heimes | 4fbc72b | 2008-03-22 00:47:35 +0000 | [diff] [blame] | 59 | |
Antoine Pietri | 5d2a27d | 2018-03-12 14:42:34 +0100 | [diff] [blame] | 60 | def test_strsignal(self): |
Antoine Pietri | 019f5b3 | 2018-03-12 20:03:14 +0100 | [diff] [blame] | 61 | self.assertIn("Interrupt", signal.strsignal(signal.SIGINT)) |
| 62 | self.assertIn("Terminated", signal.strsignal(signal.SIGTERM)) |
Michael Osipov | 48ce489 | 2018-08-23 15:27:19 +0200 | [diff] [blame] | 63 | self.assertIn("Hangup", signal.strsignal(signal.SIGHUP)) |
Antoine Pietri | 5d2a27d | 2018-03-12 14:42:34 +0100 | [diff] [blame] | 64 | |
Victor Stinner | 32eb840 | 2016-03-15 11:12:35 +0100 | [diff] [blame] | 65 | # Issue 3864, unknown if this affects earlier versions of freebsd also |
Victor Stinner | 32eb840 | 2016-03-15 11:12:35 +0100 | [diff] [blame] | 66 | def test_interprocess_signal(self): |
| 67 | dirname = os.path.dirname(__file__) |
| 68 | script = os.path.join(dirname, 'signalinterproctester.py') |
| 69 | assert_python_ok(script) |
| 70 | |
Antoine Pitrou | 9d3627e | 2018-05-04 13:00:50 +0200 | [diff] [blame] | 71 | def test_valid_signals(self): |
| 72 | s = signal.valid_signals() |
| 73 | self.assertIsInstance(s, set) |
| 74 | self.assertIn(signal.Signals.SIGINT, s) |
| 75 | self.assertIn(signal.Signals.SIGALRM, s) |
| 76 | self.assertNotIn(0, s) |
| 77 | self.assertNotIn(signal.NSIG, s) |
| 78 | self.assertLess(len(s), signal.NSIG) |
| 79 | |
Gregory P. Smith | 38f11cc | 2019-02-16 12:57:40 -0800 | [diff] [blame] | 80 | @unittest.skipUnless(sys.executable, "sys.executable required.") |
| 81 | def test_keyboard_interrupt_exit_code(self): |
| 82 | """KeyboardInterrupt triggers exit via SIGINT.""" |
| 83 | process = subprocess.run( |
| 84 | [sys.executable, "-c", |
Gregory P. Smith | 414c625 | 2019-02-16 17:22:39 -0800 | [diff] [blame] | 85 | "import os, signal, time\n" |
| 86 | "os.kill(os.getpid(), signal.SIGINT)\n" |
| 87 | "for _ in range(999): time.sleep(0.01)"], |
Gregory P. Smith | 38f11cc | 2019-02-16 12:57:40 -0800 | [diff] [blame] | 88 | stderr=subprocess.PIPE) |
| 89 | self.assertIn(b"KeyboardInterrupt", process.stderr) |
| 90 | self.assertEqual(process.returncode, -signal.SIGINT) |
Gregory P. Smith | 414c625 | 2019-02-16 17:22:39 -0800 | [diff] [blame] | 91 | # Caveat: The exit code is insufficient to guarantee we actually died |
| 92 | # via a signal. POSIX shells do more than look at the 8 bit value. |
| 93 | # Writing an automation friendly test of an interactive shell |
| 94 | # to confirm that our process died via a SIGINT proved too complex. |
Gregory P. Smith | 38f11cc | 2019-02-16 12:57:40 -0800 | [diff] [blame] | 95 | |
Christian Heimes | 4fbc72b | 2008-03-22 00:47:35 +0000 | [diff] [blame] | 96 | |
Brian Curtin | 3f004b1 | 2010-08-06 19:34:52 +0000 | [diff] [blame] | 97 | @unittest.skipUnless(sys.platform == "win32", "Windows specific") |
| 98 | class WindowsSignalTests(unittest.TestCase): |
Antoine Pitrou | 9d3627e | 2018-05-04 13:00:50 +0200 | [diff] [blame] | 99 | |
| 100 | def test_valid_signals(self): |
| 101 | s = signal.valid_signals() |
| 102 | self.assertIsInstance(s, set) |
| 103 | self.assertGreaterEqual(len(s), 6) |
| 104 | self.assertIn(signal.Signals.SIGINT, s) |
| 105 | self.assertNotIn(0, s) |
| 106 | self.assertNotIn(signal.NSIG, s) |
| 107 | self.assertLess(len(s), signal.NSIG) |
| 108 | |
Brian Curtin | 3f004b1 | 2010-08-06 19:34:52 +0000 | [diff] [blame] | 109 | def test_issue9324(self): |
Brian Curtin | eccd4d9 | 2010-10-01 15:09:53 +0000 | [diff] [blame] | 110 | # Updated for issue #10003, adding SIGBREAK |
Brian Curtin | 3f004b1 | 2010-08-06 19:34:52 +0000 | [diff] [blame] | 111 | handler = lambda x, y: None |
Nick Coghlan | 60b3ac7 | 2013-08-03 22:56:30 +1000 | [diff] [blame] | 112 | checked = set() |
Brian Curtin | eccd4d9 | 2010-10-01 15:09:53 +0000 | [diff] [blame] | 113 | for sig in (signal.SIGABRT, signal.SIGBREAK, signal.SIGFPE, |
| 114 | signal.SIGILL, signal.SIGINT, signal.SIGSEGV, |
| 115 | signal.SIGTERM): |
Nick Coghlan | 60b3ac7 | 2013-08-03 22:56:30 +1000 | [diff] [blame] | 116 | # Set and then reset a handler for signals that work on windows. |
| 117 | # Issue #18396, only for signals without a C-level handler. |
| 118 | if signal.getsignal(sig) is not None: |
| 119 | signal.signal(sig, signal.signal(sig, handler)) |
| 120 | checked.add(sig) |
| 121 | # Issue #18396: Ensure the above loop at least tested *something* |
| 122 | self.assertTrue(checked) |
Brian Curtin | 3f004b1 | 2010-08-06 19:34:52 +0000 | [diff] [blame] | 123 | |
| 124 | with self.assertRaises(ValueError): |
| 125 | signal.signal(-1, handler) |
Brian Curtin | 80cd4bf | 2010-08-07 03:52:38 +0000 | [diff] [blame] | 126 | |
| 127 | with self.assertRaises(ValueError): |
| 128 | signal.signal(7, handler) |
Brian Curtin | 3f004b1 | 2010-08-06 19:34:52 +0000 | [diff] [blame] | 129 | |
Gregory P. Smith | 38f11cc | 2019-02-16 12:57:40 -0800 | [diff] [blame] | 130 | @unittest.skipUnless(sys.executable, "sys.executable required.") |
| 131 | def test_keyboard_interrupt_exit_code(self): |
| 132 | """KeyboardInterrupt triggers an exit using STATUS_CONTROL_C_EXIT.""" |
| 133 | # We don't test via os.kill(os.getpid(), signal.CTRL_C_EVENT) here |
| 134 | # as that requires setting up a console control handler in a child |
| 135 | # in its own process group. Doable, but quite complicated. (see |
| 136 | # @eryksun on https://github.com/python/cpython/pull/11862) |
| 137 | process = subprocess.run( |
| 138 | [sys.executable, "-c", "raise KeyboardInterrupt"], |
| 139 | stderr=subprocess.PIPE) |
| 140 | self.assertIn(b"KeyboardInterrupt", process.stderr) |
| 141 | STATUS_CONTROL_C_EXIT = 0xC000013A |
| 142 | self.assertEqual(process.returncode, STATUS_CONTROL_C_EXIT) |
| 143 | |
Brian Curtin | 3f004b1 | 2010-08-06 19:34:52 +0000 | [diff] [blame] | 144 | |
Benjamin Peterson | c68a4a0 | 2013-01-18 00:10:24 -0500 | [diff] [blame] | 145 | class WakeupFDTests(unittest.TestCase): |
| 146 | |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 147 | def test_invalid_call(self): |
| 148 | # First parameter is positional-only |
| 149 | with self.assertRaises(TypeError): |
| 150 | signal.set_wakeup_fd(signum=signal.SIGINT) |
| 151 | |
| 152 | # warn_on_full_buffer is a keyword-only parameter |
| 153 | with self.assertRaises(TypeError): |
| 154 | signal.set_wakeup_fd(signal.SIGINT, False) |
| 155 | |
Benjamin Peterson | c68a4a0 | 2013-01-18 00:10:24 -0500 | [diff] [blame] | 156 | def test_invalid_fd(self): |
Victor Stinner | 1d8948e | 2014-07-24 22:51:05 +0200 | [diff] [blame] | 157 | fd = support.make_bad_fd() |
Victor Stinner | a7d03d9 | 2014-07-21 17:17:28 +0200 | [diff] [blame] | 158 | self.assertRaises((ValueError, OSError), |
| 159 | signal.set_wakeup_fd, fd) |
Benjamin Peterson | c68a4a0 | 2013-01-18 00:10:24 -0500 | [diff] [blame] | 160 | |
Victor Stinner | 1151710 | 2014-07-29 23:31:34 +0200 | [diff] [blame] | 161 | def test_invalid_socket(self): |
| 162 | sock = socket.socket() |
| 163 | fd = sock.fileno() |
| 164 | sock.close() |
| 165 | self.assertRaises((ValueError, OSError), |
| 166 | signal.set_wakeup_fd, fd) |
| 167 | |
Victor Stinner | d18ccd1 | 2014-07-24 21:58:53 +0200 | [diff] [blame] | 168 | def test_set_wakeup_fd_result(self): |
Victor Stinner | 1d8948e | 2014-07-24 22:51:05 +0200 | [diff] [blame] | 169 | r1, w1 = os.pipe() |
| 170 | self.addCleanup(os.close, r1) |
| 171 | self.addCleanup(os.close, w1) |
| 172 | r2, w2 = os.pipe() |
| 173 | self.addCleanup(os.close, r2) |
| 174 | self.addCleanup(os.close, w2) |
Victor Stinner | d18ccd1 | 2014-07-24 21:58:53 +0200 | [diff] [blame] | 175 | |
Victor Stinner | 7cea44d | 2014-08-27 14:02:36 +0200 | [diff] [blame] | 176 | if hasattr(os, 'set_blocking'): |
| 177 | os.set_blocking(w1, False) |
| 178 | os.set_blocking(w2, False) |
Victor Stinner | 3822760 | 2014-08-27 12:59:44 +0200 | [diff] [blame] | 179 | |
Victor Stinner | 1d8948e | 2014-07-24 22:51:05 +0200 | [diff] [blame] | 180 | signal.set_wakeup_fd(w1) |
Victor Stinner | c82a179 | 2014-07-24 22:55:12 +0200 | [diff] [blame] | 181 | self.assertEqual(signal.set_wakeup_fd(w2), w1) |
| 182 | self.assertEqual(signal.set_wakeup_fd(-1), w2) |
| 183 | self.assertEqual(signal.set_wakeup_fd(-1), -1) |
Victor Stinner | 56e8c29 | 2014-07-21 12:30:22 +0200 | [diff] [blame] | 184 | |
Victor Stinner | 1151710 | 2014-07-29 23:31:34 +0200 | [diff] [blame] | 185 | def test_set_wakeup_fd_socket_result(self): |
| 186 | sock1 = socket.socket() |
| 187 | self.addCleanup(sock1.close) |
Victor Stinner | 3822760 | 2014-08-27 12:59:44 +0200 | [diff] [blame] | 188 | sock1.setblocking(False) |
Victor Stinner | 1151710 | 2014-07-29 23:31:34 +0200 | [diff] [blame] | 189 | fd1 = sock1.fileno() |
| 190 | |
| 191 | sock2 = socket.socket() |
| 192 | self.addCleanup(sock2.close) |
Victor Stinner | 3822760 | 2014-08-27 12:59:44 +0200 | [diff] [blame] | 193 | sock2.setblocking(False) |
Victor Stinner | 1151710 | 2014-07-29 23:31:34 +0200 | [diff] [blame] | 194 | fd2 = sock2.fileno() |
| 195 | |
| 196 | signal.set_wakeup_fd(fd1) |
Victor Stinner | da565a7 | 2014-07-30 10:03:03 +0200 | [diff] [blame] | 197 | self.assertEqual(signal.set_wakeup_fd(fd2), fd1) |
| 198 | self.assertEqual(signal.set_wakeup_fd(-1), fd2) |
| 199 | self.assertEqual(signal.set_wakeup_fd(-1), -1) |
Victor Stinner | 1151710 | 2014-07-29 23:31:34 +0200 | [diff] [blame] | 200 | |
Victor Stinner | 3822760 | 2014-08-27 12:59:44 +0200 | [diff] [blame] | 201 | # On Windows, files are always blocking and Windows does not provide a |
| 202 | # function to test if a socket is in non-blocking mode. |
| 203 | @unittest.skipIf(sys.platform == "win32", "tests specific to POSIX") |
| 204 | def test_set_wakeup_fd_blocking(self): |
| 205 | rfd, wfd = os.pipe() |
| 206 | self.addCleanup(os.close, rfd) |
| 207 | self.addCleanup(os.close, wfd) |
| 208 | |
| 209 | # fd must be non-blocking |
| 210 | os.set_blocking(wfd, True) |
| 211 | with self.assertRaises(ValueError) as cm: |
| 212 | signal.set_wakeup_fd(wfd) |
| 213 | self.assertEqual(str(cm.exception), |
| 214 | "the fd %s must be in non-blocking mode" % wfd) |
| 215 | |
| 216 | # non-blocking is ok |
| 217 | os.set_blocking(wfd, False) |
| 218 | signal.set_wakeup_fd(wfd) |
| 219 | signal.set_wakeup_fd(-1) |
| 220 | |
Benjamin Peterson | c68a4a0 | 2013-01-18 00:10:24 -0500 | [diff] [blame] | 221 | |
Brian Curtin | 3f004b1 | 2010-08-06 19:34:52 +0000 | [diff] [blame] | 222 | @unittest.skipIf(sys.platform == "win32", "Not valid on Windows") |
Christian Heimes | 5fb7c2a | 2007-12-24 08:52:31 +0000 | [diff] [blame] | 223 | class WakeupSignalTests(unittest.TestCase): |
Victor Stinner | 56e8c29 | 2014-07-21 12:30:22 +0200 | [diff] [blame] | 224 | @unittest.skipIf(_testcapi is None, 'need _testcapi') |
Charles-François Natali | 027f9a3 | 2011-10-02 18:36:05 +0200 | [diff] [blame] | 225 | def check_wakeup(self, test_body, *signals, ordered=True): |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 226 | # use a subprocess to have only one thread |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 227 | code = """if 1: |
Victor Stinner | 56e8c29 | 2014-07-21 12:30:22 +0200 | [diff] [blame] | 228 | import _testcapi |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 229 | import os |
| 230 | import signal |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 231 | import struct |
Christian Heimes | 5fb7c2a | 2007-12-24 08:52:31 +0000 | [diff] [blame] | 232 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 233 | signals = {!r} |
Victor Stinner | c13ef66 | 2011-05-25 02:35:58 +0200 | [diff] [blame] | 234 | |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 235 | def handler(signum, frame): |
| 236 | pass |
| 237 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 238 | def check_signum(signals): |
| 239 | data = os.read(read, len(signals)+1) |
| 240 | raised = struct.unpack('%uB' % len(data), data) |
Charles-François Natali | 027f9a3 | 2011-10-02 18:36:05 +0200 | [diff] [blame] | 241 | if not {!r}: |
| 242 | raised = set(raised) |
| 243 | signals = set(signals) |
Victor Stinner | 0a01f13 | 2011-07-04 18:06:35 +0200 | [diff] [blame] | 244 | if raised != signals: |
| 245 | raise Exception("%r != %r" % (raised, signals)) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 246 | |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 247 | {} |
| 248 | |
| 249 | signal.signal(signal.SIGALRM, handler) |
| 250 | read, write = os.pipe() |
Victor Stinner | 1db9e7b | 2014-07-29 22:32:47 +0200 | [diff] [blame] | 251 | os.set_blocking(write, False) |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 252 | signal.set_wakeup_fd(write) |
| 253 | |
| 254 | test() |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 255 | check_signum(signals) |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 256 | |
| 257 | os.close(read) |
| 258 | os.close(write) |
Giampaolo Rodola' | e09fb71 | 2014-04-04 15:34:17 +0200 | [diff] [blame] | 259 | """.format(tuple(map(int, signals)), ordered, test_body) |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 260 | |
| 261 | assert_python_ok('-c', code) |
Victor Stinner | d49b1f1 | 2011-05-08 02:03:15 +0200 | [diff] [blame] | 262 | |
Victor Stinner | 56e8c29 | 2014-07-21 12:30:22 +0200 | [diff] [blame] | 263 | @unittest.skipIf(_testcapi is None, 'need _testcapi') |
Antoine Pitrou | 6f6ec37 | 2013-08-17 20:27:56 +0200 | [diff] [blame] | 264 | def test_wakeup_write_error(self): |
| 265 | # Issue #16105: write() errors in the C signal handler should not |
| 266 | # pass silently. |
| 267 | # Use a subprocess to have only one thread. |
| 268 | code = """if 1: |
Victor Stinner | 56e8c29 | 2014-07-21 12:30:22 +0200 | [diff] [blame] | 269 | import _testcapi |
Antoine Pitrou | 6f6ec37 | 2013-08-17 20:27:56 +0200 | [diff] [blame] | 270 | import errno |
Antoine Pitrou | 6f6ec37 | 2013-08-17 20:27:56 +0200 | [diff] [blame] | 271 | import os |
| 272 | import signal |
| 273 | import sys |
Antoine Pitrou | 6f6ec37 | 2013-08-17 20:27:56 +0200 | [diff] [blame] | 274 | from test.support import captured_stderr |
| 275 | |
| 276 | def handler(signum, frame): |
| 277 | 1/0 |
| 278 | |
| 279 | signal.signal(signal.SIGALRM, handler) |
| 280 | r, w = os.pipe() |
Victor Stinner | 1db9e7b | 2014-07-29 22:32:47 +0200 | [diff] [blame] | 281 | os.set_blocking(r, False) |
Antoine Pitrou | 6f6ec37 | 2013-08-17 20:27:56 +0200 | [diff] [blame] | 282 | |
| 283 | # Set wakeup_fd a read-only file descriptor to trigger the error |
| 284 | signal.set_wakeup_fd(r) |
| 285 | try: |
| 286 | with captured_stderr() as err: |
Vladimir Matveev | c24c6c2 | 2019-01-08 01:58:25 -0800 | [diff] [blame] | 287 | signal.raise_signal(signal.SIGALRM) |
Antoine Pitrou | 6f6ec37 | 2013-08-17 20:27:56 +0200 | [diff] [blame] | 288 | except ZeroDivisionError: |
| 289 | # An ignored exception should have been printed out on stderr |
| 290 | err = err.getvalue() |
| 291 | if ('Exception ignored when trying to write to the signal wakeup fd' |
| 292 | not in err): |
| 293 | raise AssertionError(err) |
| 294 | if ('OSError: [Errno %d]' % errno.EBADF) not in err: |
| 295 | raise AssertionError(err) |
| 296 | else: |
| 297 | raise AssertionError("ZeroDivisionError not raised") |
Victor Stinner | 56e8c29 | 2014-07-21 12:30:22 +0200 | [diff] [blame] | 298 | |
| 299 | os.close(r) |
| 300 | os.close(w) |
Antoine Pitrou | 6f6ec37 | 2013-08-17 20:27:56 +0200 | [diff] [blame] | 301 | """ |
Antoine Pitrou | 8f0bdda | 2013-08-17 21:43:47 +0200 | [diff] [blame] | 302 | r, w = os.pipe() |
| 303 | try: |
| 304 | os.write(r, b'x') |
| 305 | except OSError: |
| 306 | pass |
| 307 | else: |
| 308 | self.skipTest("OS doesn't report write() error on the read end of a pipe") |
| 309 | finally: |
| 310 | os.close(r) |
| 311 | os.close(w) |
Antoine Pitrou | 6f6ec37 | 2013-08-17 20:27:56 +0200 | [diff] [blame] | 312 | |
| 313 | assert_python_ok('-c', code) |
| 314 | |
Christian Heimes | 5fb7c2a | 2007-12-24 08:52:31 +0000 | [diff] [blame] | 315 | def test_wakeup_fd_early(self): |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 316 | self.check_wakeup("""def test(): |
| 317 | import select |
| 318 | import time |
Christian Heimes | 5fb7c2a | 2007-12-24 08:52:31 +0000 | [diff] [blame] | 319 | |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 320 | TIMEOUT_FULL = 10 |
| 321 | TIMEOUT_HALF = 5 |
| 322 | |
Victor Stinner | 749a6a8 | 2015-03-30 22:09:14 +0200 | [diff] [blame] | 323 | class InterruptSelect(Exception): |
| 324 | pass |
| 325 | |
| 326 | def handler(signum, frame): |
| 327 | raise InterruptSelect |
| 328 | signal.signal(signal.SIGALRM, handler) |
| 329 | |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 330 | signal.alarm(1) |
Victor Stinner | 79d68f9 | 2015-03-19 21:54:09 +0100 | [diff] [blame] | 331 | |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 332 | # We attempt to get a signal during the sleep, |
| 333 | # before select is called |
Victor Stinner | 79d68f9 | 2015-03-19 21:54:09 +0100 | [diff] [blame] | 334 | try: |
| 335 | select.select([], [], [], TIMEOUT_FULL) |
Victor Stinner | 749a6a8 | 2015-03-30 22:09:14 +0200 | [diff] [blame] | 336 | except InterruptSelect: |
Victor Stinner | 79d68f9 | 2015-03-19 21:54:09 +0100 | [diff] [blame] | 337 | pass |
| 338 | else: |
| 339 | raise Exception("select() was not interrupted") |
| 340 | |
| 341 | before_time = time.monotonic() |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 342 | select.select([read], [], [], TIMEOUT_FULL) |
Victor Stinner | 79d68f9 | 2015-03-19 21:54:09 +0100 | [diff] [blame] | 343 | after_time = time.monotonic() |
| 344 | dt = after_time - before_time |
Victor Stinner | 0a01f13 | 2011-07-04 18:06:35 +0200 | [diff] [blame] | 345 | if dt >= TIMEOUT_HALF: |
| 346 | raise Exception("%s >= %s" % (dt, TIMEOUT_HALF)) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 347 | """, signal.SIGALRM) |
Christian Heimes | 5fb7c2a | 2007-12-24 08:52:31 +0000 | [diff] [blame] | 348 | |
| 349 | def test_wakeup_fd_during(self): |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 350 | self.check_wakeup("""def test(): |
| 351 | import select |
| 352 | import time |
Christian Heimes | 5fb7c2a | 2007-12-24 08:52:31 +0000 | [diff] [blame] | 353 | |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 354 | TIMEOUT_FULL = 10 |
| 355 | TIMEOUT_HALF = 5 |
Christian Heimes | 5fb7c2a | 2007-12-24 08:52:31 +0000 | [diff] [blame] | 356 | |
Victor Stinner | 749a6a8 | 2015-03-30 22:09:14 +0200 | [diff] [blame] | 357 | class InterruptSelect(Exception): |
| 358 | pass |
| 359 | |
| 360 | def handler(signum, frame): |
| 361 | raise InterruptSelect |
| 362 | signal.signal(signal.SIGALRM, handler) |
| 363 | |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 364 | signal.alarm(1) |
Victor Stinner | 79d68f9 | 2015-03-19 21:54:09 +0100 | [diff] [blame] | 365 | before_time = time.monotonic() |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 366 | # We attempt to get a signal during the select call |
| 367 | try: |
| 368 | select.select([read], [], [], TIMEOUT_FULL) |
Victor Stinner | 749a6a8 | 2015-03-30 22:09:14 +0200 | [diff] [blame] | 369 | except InterruptSelect: |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 370 | pass |
| 371 | else: |
Victor Stinner | 749a6a8 | 2015-03-30 22:09:14 +0200 | [diff] [blame] | 372 | raise Exception("select() was not interrupted") |
Victor Stinner | 79d68f9 | 2015-03-19 21:54:09 +0100 | [diff] [blame] | 373 | after_time = time.monotonic() |
Victor Stinner | e40b3aa | 2011-07-04 17:35:10 +0200 | [diff] [blame] | 374 | dt = after_time - before_time |
Victor Stinner | 0a01f13 | 2011-07-04 18:06:35 +0200 | [diff] [blame] | 375 | if dt >= TIMEOUT_HALF: |
| 376 | raise Exception("%s >= %s" % (dt, TIMEOUT_HALF)) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 377 | """, signal.SIGALRM) |
Victor Stinner | d49b1f1 | 2011-05-08 02:03:15 +0200 | [diff] [blame] | 378 | |
| 379 | def test_signum(self): |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 380 | self.check_wakeup("""def test(): |
| 381 | signal.signal(signal.SIGUSR1, handler) |
Vladimir Matveev | c24c6c2 | 2019-01-08 01:58:25 -0800 | [diff] [blame] | 382 | signal.raise_signal(signal.SIGUSR1) |
| 383 | signal.raise_signal(signal.SIGALRM) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 384 | """, signal.SIGUSR1, signal.SIGALRM) |
Christian Heimes | 5fb7c2a | 2007-12-24 08:52:31 +0000 | [diff] [blame] | 385 | |
Victor Stinner | c13ef66 | 2011-05-25 02:35:58 +0200 | [diff] [blame] | 386 | @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'), |
| 387 | 'need signal.pthread_sigmask()') |
Victor Stinner | c13ef66 | 2011-05-25 02:35:58 +0200 | [diff] [blame] | 388 | def test_pending(self): |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 389 | self.check_wakeup("""def test(): |
| 390 | signum1 = signal.SIGUSR1 |
| 391 | signum2 = signal.SIGUSR2 |
Victor Stinner | c13ef66 | 2011-05-25 02:35:58 +0200 | [diff] [blame] | 392 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 393 | signal.signal(signum1, handler) |
| 394 | signal.signal(signum2, handler) |
Victor Stinner | c13ef66 | 2011-05-25 02:35:58 +0200 | [diff] [blame] | 395 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 396 | signal.pthread_sigmask(signal.SIG_BLOCK, (signum1, signum2)) |
Vladimir Matveev | c24c6c2 | 2019-01-08 01:58:25 -0800 | [diff] [blame] | 397 | signal.raise_signal(signum1) |
| 398 | signal.raise_signal(signum2) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 399 | # Unblocking the 2 signals calls the C signal handler twice |
| 400 | signal.pthread_sigmask(signal.SIG_UNBLOCK, (signum1, signum2)) |
Charles-François Natali | 027f9a3 | 2011-10-02 18:36:05 +0200 | [diff] [blame] | 401 | """, signal.SIGUSR1, signal.SIGUSR2, ordered=False) |
Victor Stinner | c13ef66 | 2011-05-25 02:35:58 +0200 | [diff] [blame] | 402 | |
Christian Heimes | 5fb7c2a | 2007-12-24 08:52:31 +0000 | [diff] [blame] | 403 | |
Victor Stinner | 1151710 | 2014-07-29 23:31:34 +0200 | [diff] [blame] | 404 | @unittest.skipUnless(hasattr(socket, 'socketpair'), 'need socket.socketpair') |
| 405 | class WakeupSocketSignalTests(unittest.TestCase): |
| 406 | |
| 407 | @unittest.skipIf(_testcapi is None, 'need _testcapi') |
| 408 | def test_socket(self): |
| 409 | # use a subprocess to have only one thread |
| 410 | code = """if 1: |
| 411 | import signal |
| 412 | import socket |
| 413 | import struct |
| 414 | import _testcapi |
| 415 | |
| 416 | signum = signal.SIGINT |
| 417 | signals = (signum,) |
| 418 | |
| 419 | def handler(signum, frame): |
| 420 | pass |
| 421 | |
| 422 | signal.signal(signum, handler) |
| 423 | |
| 424 | read, write = socket.socketpair() |
Victor Stinner | 1151710 | 2014-07-29 23:31:34 +0200 | [diff] [blame] | 425 | write.setblocking(False) |
| 426 | signal.set_wakeup_fd(write.fileno()) |
| 427 | |
Vladimir Matveev | c24c6c2 | 2019-01-08 01:58:25 -0800 | [diff] [blame] | 428 | signal.raise_signal(signum) |
Victor Stinner | 1151710 | 2014-07-29 23:31:34 +0200 | [diff] [blame] | 429 | |
| 430 | data = read.recv(1) |
| 431 | if not data: |
| 432 | raise Exception("no signum written") |
| 433 | raised = struct.unpack('B', data) |
| 434 | if raised != signals: |
| 435 | raise Exception("%r != %r" % (raised, signals)) |
| 436 | |
| 437 | read.close() |
| 438 | write.close() |
| 439 | """ |
| 440 | |
| 441 | assert_python_ok('-c', code) |
| 442 | |
| 443 | @unittest.skipIf(_testcapi is None, 'need _testcapi') |
| 444 | def test_send_error(self): |
| 445 | # Use a subprocess to have only one thread. |
| 446 | if os.name == 'nt': |
| 447 | action = 'send' |
| 448 | else: |
| 449 | action = 'write' |
| 450 | code = """if 1: |
| 451 | import errno |
| 452 | import signal |
| 453 | import socket |
| 454 | import sys |
| 455 | import time |
| 456 | import _testcapi |
| 457 | from test.support import captured_stderr |
| 458 | |
| 459 | signum = signal.SIGINT |
| 460 | |
| 461 | def handler(signum, frame): |
| 462 | pass |
| 463 | |
| 464 | signal.signal(signum, handler) |
| 465 | |
| 466 | read, write = socket.socketpair() |
| 467 | read.setblocking(False) |
| 468 | write.setblocking(False) |
| 469 | |
| 470 | signal.set_wakeup_fd(write.fileno()) |
| 471 | |
| 472 | # Close sockets: send() will fail |
| 473 | read.close() |
| 474 | write.close() |
| 475 | |
| 476 | with captured_stderr() as err: |
Vladimir Matveev | c24c6c2 | 2019-01-08 01:58:25 -0800 | [diff] [blame] | 477 | signal.raise_signal(signum) |
Victor Stinner | 1151710 | 2014-07-29 23:31:34 +0200 | [diff] [blame] | 478 | |
| 479 | err = err.getvalue() |
| 480 | if ('Exception ignored when trying to {action} to the signal wakeup fd' |
| 481 | not in err): |
| 482 | raise AssertionError(err) |
| 483 | """.format(action=action) |
| 484 | assert_python_ok('-c', code) |
| 485 | |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 486 | @unittest.skipIf(_testcapi is None, 'need _testcapi') |
| 487 | def test_warn_on_full_buffer(self): |
| 488 | # Use a subprocess to have only one thread. |
| 489 | if os.name == 'nt': |
| 490 | action = 'send' |
| 491 | else: |
| 492 | action = 'write' |
| 493 | code = """if 1: |
| 494 | import errno |
| 495 | import signal |
| 496 | import socket |
| 497 | import sys |
| 498 | import time |
| 499 | import _testcapi |
| 500 | from test.support import captured_stderr |
| 501 | |
| 502 | signum = signal.SIGINT |
| 503 | |
| 504 | # This handler will be called, but we intentionally won't read from |
| 505 | # the wakeup fd. |
| 506 | def handler(signum, frame): |
| 507 | pass |
| 508 | |
| 509 | signal.signal(signum, handler) |
| 510 | |
| 511 | read, write = socket.socketpair() |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 512 | |
Victor Stinner | 686b4b5 | 2018-07-18 18:29:54 +0200 | [diff] [blame] | 513 | # Fill the socketpair buffer |
| 514 | if sys.platform == 'win32': |
| 515 | # bpo-34130: On Windows, sometimes non-blocking send fails to fill |
| 516 | # the full socketpair buffer, so use a timeout of 50 ms instead. |
| 517 | write.settimeout(0.050) |
| 518 | else: |
| 519 | write.setblocking(False) |
| 520 | |
| 521 | # Start with large chunk size to reduce the |
| 522 | # number of send needed to fill the buffer. |
| 523 | written = 0 |
| 524 | for chunk_size in (2 ** 16, 2 ** 8, 1): |
| 525 | chunk = b"x" * chunk_size |
| 526 | try: |
| 527 | while True: |
| 528 | write.send(chunk) |
| 529 | written += chunk_size |
| 530 | except (BlockingIOError, socket.timeout): |
| 531 | pass |
| 532 | |
| 533 | print(f"%s bytes written into the socketpair" % written, flush=True) |
| 534 | |
| 535 | write.setblocking(False) |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 536 | try: |
Victor Stinner | 686b4b5 | 2018-07-18 18:29:54 +0200 | [diff] [blame] | 537 | write.send(b"x") |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 538 | except BlockingIOError: |
Victor Stinner | 686b4b5 | 2018-07-18 18:29:54 +0200 | [diff] [blame] | 539 | # The socketpair buffer seems full |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 540 | pass |
Victor Stinner | 686b4b5 | 2018-07-18 18:29:54 +0200 | [diff] [blame] | 541 | else: |
| 542 | raise AssertionError("%s bytes failed to fill the socketpair " |
| 543 | "buffer" % written) |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 544 | |
| 545 | # By default, we get a warning when a signal arrives |
Victor Stinner | 686b4b5 | 2018-07-18 18:29:54 +0200 | [diff] [blame] | 546 | msg = ('Exception ignored when trying to {action} ' |
| 547 | 'to the signal wakeup fd') |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 548 | signal.set_wakeup_fd(write.fileno()) |
| 549 | |
| 550 | with captured_stderr() as err: |
Vladimir Matveev | c24c6c2 | 2019-01-08 01:58:25 -0800 | [diff] [blame] | 551 | signal.raise_signal(signum) |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 552 | |
| 553 | err = err.getvalue() |
Victor Stinner | 686b4b5 | 2018-07-18 18:29:54 +0200 | [diff] [blame] | 554 | if msg not in err: |
| 555 | raise AssertionError("first set_wakeup_fd() test failed, " |
| 556 | "stderr: %r" % err) |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 557 | |
| 558 | # And also if warn_on_full_buffer=True |
| 559 | signal.set_wakeup_fd(write.fileno(), warn_on_full_buffer=True) |
| 560 | |
| 561 | with captured_stderr() as err: |
Vladimir Matveev | c24c6c2 | 2019-01-08 01:58:25 -0800 | [diff] [blame] | 562 | signal.raise_signal(signum) |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 563 | |
| 564 | err = err.getvalue() |
Victor Stinner | 686b4b5 | 2018-07-18 18:29:54 +0200 | [diff] [blame] | 565 | if msg not in err: |
| 566 | raise AssertionError("set_wakeup_fd(warn_on_full_buffer=True) " |
| 567 | "test failed, stderr: %r" % err) |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 568 | |
| 569 | # But not if warn_on_full_buffer=False |
| 570 | signal.set_wakeup_fd(write.fileno(), warn_on_full_buffer=False) |
| 571 | |
| 572 | with captured_stderr() as err: |
Vladimir Matveev | c24c6c2 | 2019-01-08 01:58:25 -0800 | [diff] [blame] | 573 | signal.raise_signal(signum) |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 574 | |
| 575 | err = err.getvalue() |
| 576 | if err != "": |
Victor Stinner | 686b4b5 | 2018-07-18 18:29:54 +0200 | [diff] [blame] | 577 | raise AssertionError("set_wakeup_fd(warn_on_full_buffer=False) " |
| 578 | "test failed, stderr: %r" % err) |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 579 | |
| 580 | # And then check the default again, to make sure warn_on_full_buffer |
| 581 | # settings don't leak across calls. |
| 582 | signal.set_wakeup_fd(write.fileno()) |
| 583 | |
| 584 | with captured_stderr() as err: |
Vladimir Matveev | c24c6c2 | 2019-01-08 01:58:25 -0800 | [diff] [blame] | 585 | signal.raise_signal(signum) |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 586 | |
| 587 | err = err.getvalue() |
Victor Stinner | 686b4b5 | 2018-07-18 18:29:54 +0200 | [diff] [blame] | 588 | if msg not in err: |
| 589 | raise AssertionError("second set_wakeup_fd() test failed, " |
| 590 | "stderr: %r" % err) |
Nathaniel J. Smith | 902ab80 | 2017-12-17 20:10:18 -0800 | [diff] [blame] | 591 | |
| 592 | """.format(action=action) |
| 593 | assert_python_ok('-c', code) |
| 594 | |
Victor Stinner | 1151710 | 2014-07-29 23:31:34 +0200 | [diff] [blame] | 595 | |
Brian Curtin | 3f004b1 | 2010-08-06 19:34:52 +0000 | [diff] [blame] | 596 | @unittest.skipIf(sys.platform == "win32", "Not valid on Windows") |
Christian Heimes | 8640e74 | 2008-02-23 16:23:06 +0000 | [diff] [blame] | 597 | class SiginterruptTest(unittest.TestCase): |
Jean-Paul Calderone | 9c39bc7 | 2010-05-09 03:25:16 +0000 | [diff] [blame] | 598 | |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 599 | def readpipe_interrupted(self, interrupt): |
Jean-Paul Calderone | 9c39bc7 | 2010-05-09 03:25:16 +0000 | [diff] [blame] | 600 | """Perform a read during which a signal will arrive. Return True if the |
| 601 | read is interrupted by the signal and raises an exception. Return False |
| 602 | if it returns normally. |
| 603 | """ |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 604 | # use a subprocess to have only one thread, to have a timeout on the |
| 605 | # blocking read and to not touch signal handling in this process |
| 606 | code = """if 1: |
| 607 | import errno |
| 608 | import os |
| 609 | import signal |
| 610 | import sys |
Jean-Paul Calderone | 9c39bc7 | 2010-05-09 03:25:16 +0000 | [diff] [blame] | 611 | |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 612 | interrupt = %r |
| 613 | r, w = os.pipe() |
Christian Heimes | 8640e74 | 2008-02-23 16:23:06 +0000 | [diff] [blame] | 614 | |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 615 | def handler(signum, frame): |
Charles-François Natali | 6e6c59b | 2015-02-07 13:27:50 +0000 | [diff] [blame] | 616 | 1 / 0 |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 617 | |
| 618 | signal.signal(signal.SIGALRM, handler) |
| 619 | if interrupt is not None: |
| 620 | signal.siginterrupt(signal.SIGALRM, interrupt) |
| 621 | |
Victor Stinner | dfde0d4 | 2011-07-01 15:58:39 +0200 | [diff] [blame] | 622 | print("ready") |
| 623 | sys.stdout.flush() |
| 624 | |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 625 | # run the test twice |
Victor Stinner | 56e8c29 | 2014-07-21 12:30:22 +0200 | [diff] [blame] | 626 | try: |
| 627 | for loop in range(2): |
| 628 | # send a SIGALRM in a second (during the read) |
| 629 | signal.alarm(1) |
| 630 | try: |
| 631 | # blocking call: read from a pipe without data |
| 632 | os.read(r, 1) |
Charles-François Natali | 6e6c59b | 2015-02-07 13:27:50 +0000 | [diff] [blame] | 633 | except ZeroDivisionError: |
| 634 | pass |
Victor Stinner | 56e8c29 | 2014-07-21 12:30:22 +0200 | [diff] [blame] | 635 | else: |
| 636 | sys.exit(2) |
| 637 | sys.exit(3) |
| 638 | finally: |
| 639 | os.close(r) |
| 640 | os.close(w) |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 641 | """ % (interrupt,) |
| 642 | with spawn_python('-c', code) as process: |
Christian Heimes | 8640e74 | 2008-02-23 16:23:06 +0000 | [diff] [blame] | 643 | try: |
Victor Stinner | 4527365 | 2011-06-22 22:15:51 +0200 | [diff] [blame] | 644 | # wait until the child process is loaded and has started |
| 645 | first_line = process.stdout.readline() |
| 646 | |
Victor Stinner | 19e5bcd | 2011-07-01 15:59:54 +0200 | [diff] [blame] | 647 | stdout, stderr = process.communicate(timeout=5.0) |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 648 | except subprocess.TimeoutExpired: |
| 649 | process.kill() |
Christian Heimes | 8640e74 | 2008-02-23 16:23:06 +0000 | [diff] [blame] | 650 | return False |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 651 | else: |
Victor Stinner | 4527365 | 2011-06-22 22:15:51 +0200 | [diff] [blame] | 652 | stdout = first_line + stdout |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 653 | exitcode = process.wait() |
| 654 | if exitcode not in (2, 3): |
Antoine Pitrou | dab4e8a | 2014-05-11 19:05:23 +0200 | [diff] [blame] | 655 | raise Exception("Child error (exit code %s): %r" |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 656 | % (exitcode, stdout)) |
| 657 | return (exitcode == 3) |
Christian Heimes | 8640e74 | 2008-02-23 16:23:06 +0000 | [diff] [blame] | 658 | |
| 659 | def test_without_siginterrupt(self): |
Victor Stinner | 3a7f0f0 | 2011-05-08 02:10:36 +0200 | [diff] [blame] | 660 | # If a signal handler is installed and siginterrupt is not called |
| 661 | # at all, when that signal arrives, it interrupts a syscall that's in |
| 662 | # progress. |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 663 | interrupted = self.readpipe_interrupted(None) |
| 664 | self.assertTrue(interrupted) |
Christian Heimes | 8640e74 | 2008-02-23 16:23:06 +0000 | [diff] [blame] | 665 | |
| 666 | def test_siginterrupt_on(self): |
Victor Stinner | 3a7f0f0 | 2011-05-08 02:10:36 +0200 | [diff] [blame] | 667 | # If a signal handler is installed and siginterrupt is called with |
| 668 | # a true value for the second argument, when that signal arrives, it |
| 669 | # interrupts a syscall that's in progress. |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 670 | interrupted = self.readpipe_interrupted(True) |
| 671 | self.assertTrue(interrupted) |
Christian Heimes | 8640e74 | 2008-02-23 16:23:06 +0000 | [diff] [blame] | 672 | |
| 673 | def test_siginterrupt_off(self): |
Victor Stinner | 3a7f0f0 | 2011-05-08 02:10:36 +0200 | [diff] [blame] | 674 | # If a signal handler is installed and siginterrupt is called with |
| 675 | # a false value for the second argument, when that signal arrives, it |
| 676 | # does not interrupt a syscall that's in progress. |
Victor Stinner | d628496 | 2011-06-20 23:28:09 +0200 | [diff] [blame] | 677 | interrupted = self.readpipe_interrupted(False) |
| 678 | self.assertFalse(interrupted) |
Jean-Paul Calderone | 9c39bc7 | 2010-05-09 03:25:16 +0000 | [diff] [blame] | 679 | |
| 680 | |
Brian Curtin | 3f004b1 | 2010-08-06 19:34:52 +0000 | [diff] [blame] | 681 | @unittest.skipIf(sys.platform == "win32", "Not valid on Windows") |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 682 | class ItimerTest(unittest.TestCase): |
| 683 | def setUp(self): |
| 684 | self.hndl_called = False |
| 685 | self.hndl_count = 0 |
| 686 | self.itimer = None |
Christian Heimes | cc47b05 | 2008-03-25 14:56:36 +0000 | [diff] [blame] | 687 | self.old_alarm = signal.signal(signal.SIGALRM, self.sig_alrm) |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 688 | |
| 689 | def tearDown(self): |
Christian Heimes | cc47b05 | 2008-03-25 14:56:36 +0000 | [diff] [blame] | 690 | signal.signal(signal.SIGALRM, self.old_alarm) |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 691 | if self.itimer is not None: # test_itimer_exc doesn't change this attr |
| 692 | # just ensure that itimer is stopped |
| 693 | signal.setitimer(self.itimer, 0) |
| 694 | |
| 695 | def sig_alrm(self, *args): |
| 696 | self.hndl_called = True |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 697 | |
| 698 | def sig_vtalrm(self, *args): |
| 699 | self.hndl_called = True |
| 700 | |
| 701 | if self.hndl_count > 3: |
| 702 | # it shouldn't be here, because it should have been disabled. |
| 703 | raise signal.ItimerError("setitimer didn't disable ITIMER_VIRTUAL " |
| 704 | "timer.") |
| 705 | elif self.hndl_count == 3: |
| 706 | # disable ITIMER_VIRTUAL, this function shouldn't be called anymore |
| 707 | signal.setitimer(signal.ITIMER_VIRTUAL, 0) |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 708 | |
| 709 | self.hndl_count += 1 |
| 710 | |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 711 | def sig_prof(self, *args): |
| 712 | self.hndl_called = True |
| 713 | signal.setitimer(signal.ITIMER_PROF, 0) |
| 714 | |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 715 | def test_itimer_exc(self): |
| 716 | # XXX I'm assuming -1 is an invalid itimer, but maybe some platform |
| 717 | # defines it ? |
| 718 | self.assertRaises(signal.ItimerError, signal.setitimer, -1, 0) |
Christian Heimes | cc47b05 | 2008-03-25 14:56:36 +0000 | [diff] [blame] | 719 | # Negative times are treated as zero on some platforms. |
| 720 | if 0: |
| 721 | self.assertRaises(signal.ItimerError, |
| 722 | signal.setitimer, signal.ITIMER_REAL, -1) |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 723 | |
| 724 | def test_itimer_real(self): |
| 725 | self.itimer = signal.ITIMER_REAL |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 726 | signal.setitimer(self.itimer, 1.0) |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 727 | signal.pause() |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 728 | self.assertEqual(self.hndl_called, True) |
| 729 | |
R. David Murray | 44546f8 | 2010-04-21 01:59:28 +0000 | [diff] [blame] | 730 | # Issue 3864, unknown if this affects earlier versions of freebsd also |
Victor Stinner | 13ff245 | 2018-01-22 18:32:50 +0100 | [diff] [blame] | 731 | @unittest.skipIf(sys.platform in ('netbsd5',), |
Gregory P. Smith | 397cd8a | 2010-10-17 04:23:21 +0000 | [diff] [blame] | 732 | 'itimer not reliable (does not mix well with threading) on some BSDs.') |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 733 | def test_itimer_virtual(self): |
| 734 | self.itimer = signal.ITIMER_VIRTUAL |
| 735 | signal.signal(signal.SIGVTALRM, self.sig_vtalrm) |
| 736 | signal.setitimer(self.itimer, 0.3, 0.2) |
| 737 | |
Victor Stinner | 79d68f9 | 2015-03-19 21:54:09 +0100 | [diff] [blame] | 738 | start_time = time.monotonic() |
| 739 | while time.monotonic() - start_time < 60.0: |
Mark Dickinson | 9507887 | 2009-10-04 18:47:48 +0000 | [diff] [blame] | 740 | # use up some virtual time by doing real work |
| 741 | _ = pow(12345, 67890, 10000019) |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 742 | if signal.getitimer(self.itimer) == (0.0, 0.0): |
| 743 | break # sig_vtalrm handler stopped this itimer |
Stefan Krah | f1da97304 | 2010-04-20 08:15:14 +0000 | [diff] [blame] | 744 | else: # Issue 8424 |
Benjamin Peterson | 9b140f6 | 2010-05-15 18:00:56 +0000 | [diff] [blame] | 745 | self.skipTest("timeout: likely cause: machine too slow or load too " |
| 746 | "high") |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 747 | |
| 748 | # virtual itimer should be (0.0, 0.0) now |
Ezio Melotti | 19f2aeb | 2010-11-21 01:30:29 +0000 | [diff] [blame] | 749 | self.assertEqual(signal.getitimer(self.itimer), (0.0, 0.0)) |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 750 | # and the handler should have been called |
Ezio Melotti | 19f2aeb | 2010-11-21 01:30:29 +0000 | [diff] [blame] | 751 | self.assertEqual(self.hndl_called, True) |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 752 | |
| 753 | def test_itimer_prof(self): |
| 754 | self.itimer = signal.ITIMER_PROF |
| 755 | signal.signal(signal.SIGPROF, self.sig_prof) |
Neal Norwitz | f5c7c2e | 2008-04-05 04:47:45 +0000 | [diff] [blame] | 756 | signal.setitimer(self.itimer, 0.2, 0.2) |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 757 | |
Victor Stinner | 79d68f9 | 2015-03-19 21:54:09 +0100 | [diff] [blame] | 758 | start_time = time.monotonic() |
| 759 | while time.monotonic() - start_time < 60.0: |
Mark Dickinson | 7837347 | 2009-10-31 10:39:21 +0000 | [diff] [blame] | 760 | # do some work |
| 761 | _ = pow(12345, 67890, 10000019) |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 762 | if signal.getitimer(self.itimer) == (0.0, 0.0): |
| 763 | break # sig_prof handler stopped this itimer |
Stefan Krah | f1da97304 | 2010-04-20 08:15:14 +0000 | [diff] [blame] | 764 | else: # Issue 8424 |
Benjamin Peterson | 9b140f6 | 2010-05-15 18:00:56 +0000 | [diff] [blame] | 765 | self.skipTest("timeout: likely cause: machine too slow or load too " |
| 766 | "high") |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 767 | |
Neal Norwitz | f5c7c2e | 2008-04-05 04:47:45 +0000 | [diff] [blame] | 768 | # profiling itimer should be (0.0, 0.0) now |
Ezio Melotti | 19f2aeb | 2010-11-21 01:30:29 +0000 | [diff] [blame] | 769 | self.assertEqual(signal.getitimer(self.itimer), (0.0, 0.0)) |
Neal Norwitz | f5c7c2e | 2008-04-05 04:47:45 +0000 | [diff] [blame] | 770 | # and the handler should have been called |
Martin v. Löwis | 823725e | 2008-03-24 13:39:54 +0000 | [diff] [blame] | 771 | self.assertEqual(self.hndl_called, True) |
| 772 | |
Antoine Pitrou | 729780a | 2017-06-30 10:01:05 +0200 | [diff] [blame] | 773 | def test_setitimer_tiny(self): |
| 774 | # bpo-30807: C setitimer() takes a microsecond-resolution interval. |
| 775 | # Check that float -> timeval conversion doesn't round |
| 776 | # the interval down to zero, which would disable the timer. |
| 777 | self.itimer = signal.ITIMER_REAL |
| 778 | signal.setitimer(self.itimer, 1e-6) |
| 779 | time.sleep(1) |
| 780 | self.assertEqual(self.hndl_called, True) |
| 781 | |
Victor Stinner | a929335 | 2011-04-30 15:21:58 +0200 | [diff] [blame] | 782 | |
Victor Stinner | 35b300c | 2011-05-04 13:20:35 +0200 | [diff] [blame] | 783 | class PendingSignalsTests(unittest.TestCase): |
| 784 | """ |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 785 | Test pthread_sigmask(), pthread_kill(), sigpending() and sigwait() |
| 786 | functions. |
Victor Stinner | 35b300c | 2011-05-04 13:20:35 +0200 | [diff] [blame] | 787 | """ |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 788 | @unittest.skipUnless(hasattr(signal, 'sigpending'), |
| 789 | 'need signal.sigpending()') |
| 790 | def test_sigpending_empty(self): |
| 791 | self.assertEqual(signal.sigpending(), set()) |
| 792 | |
| 793 | @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'), |
| 794 | 'need signal.pthread_sigmask()') |
| 795 | @unittest.skipUnless(hasattr(signal, 'sigpending'), |
| 796 | 'need signal.sigpending()') |
| 797 | def test_sigpending(self): |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 798 | code = """if 1: |
| 799 | import os |
| 800 | import signal |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 801 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 802 | def handler(signum, frame): |
| 803 | 1/0 |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 804 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 805 | signum = signal.SIGUSR1 |
| 806 | signal.signal(signum, handler) |
| 807 | |
| 808 | signal.pthread_sigmask(signal.SIG_BLOCK, [signum]) |
| 809 | os.kill(os.getpid(), signum) |
| 810 | pending = signal.sigpending() |
Giampaolo Rodola' | e09fb71 | 2014-04-04 15:34:17 +0200 | [diff] [blame] | 811 | for sig in pending: |
| 812 | assert isinstance(sig, signal.Signals), repr(pending) |
Victor Stinner | 0a01f13 | 2011-07-04 18:06:35 +0200 | [diff] [blame] | 813 | if pending != {signum}: |
| 814 | raise Exception('%s != {%s}' % (pending, signum)) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 815 | try: |
| 816 | signal.pthread_sigmask(signal.SIG_UNBLOCK, [signum]) |
| 817 | except ZeroDivisionError: |
| 818 | pass |
| 819 | else: |
| 820 | raise Exception("ZeroDivisionError not raised") |
| 821 | """ |
| 822 | assert_python_ok('-c', code) |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 823 | |
| 824 | @unittest.skipUnless(hasattr(signal, 'pthread_kill'), |
| 825 | 'need signal.pthread_kill()') |
| 826 | def test_pthread_kill(self): |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 827 | code = """if 1: |
| 828 | import signal |
| 829 | import threading |
| 830 | import sys |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 831 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 832 | signum = signal.SIGUSR1 |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 833 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 834 | def handler(signum, frame): |
| 835 | 1/0 |
| 836 | |
| 837 | signal.signal(signum, handler) |
| 838 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 839 | tid = threading.get_ident() |
| 840 | try: |
| 841 | signal.pthread_kill(tid, signum) |
| 842 | except ZeroDivisionError: |
| 843 | pass |
| 844 | else: |
| 845 | raise Exception("ZeroDivisionError not raised") |
| 846 | """ |
| 847 | assert_python_ok('-c', code) |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 848 | |
Victor Stinner | 7f294d1 | 2011-06-10 14:02:10 +0200 | [diff] [blame] | 849 | @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'), |
| 850 | 'need signal.pthread_sigmask()') |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 851 | def wait_helper(self, blocked, test): |
Victor Stinner | 9e8b82f | 2011-06-29 10:43:02 +0200 | [diff] [blame] | 852 | """ |
| 853 | test: body of the "def test(signum):" function. |
| 854 | blocked: number of the blocked signal |
| 855 | """ |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 856 | code = '''if 1: |
| 857 | import signal |
| 858 | import sys |
Giampaolo Rodola' | e09fb71 | 2014-04-04 15:34:17 +0200 | [diff] [blame] | 859 | from signal import Signals |
Victor Stinner | 9e8b82f | 2011-06-29 10:43:02 +0200 | [diff] [blame] | 860 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 861 | def handler(signum, frame): |
| 862 | 1/0 |
Victor Stinner | 9e8b82f | 2011-06-29 10:43:02 +0200 | [diff] [blame] | 863 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 864 | %s |
Victor Stinner | 9e8b82f | 2011-06-29 10:43:02 +0200 | [diff] [blame] | 865 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 866 | blocked = %s |
| 867 | signum = signal.SIGALRM |
Victor Stinner | 9e8b82f | 2011-06-29 10:43:02 +0200 | [diff] [blame] | 868 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 869 | # child: block and wait the signal |
| 870 | try: |
| 871 | signal.signal(signum, handler) |
| 872 | signal.pthread_sigmask(signal.SIG_BLOCK, [blocked]) |
Victor Stinner | 9e8b82f | 2011-06-29 10:43:02 +0200 | [diff] [blame] | 873 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 874 | # Do the tests |
| 875 | test(signum) |
Victor Stinner | 9e8b82f | 2011-06-29 10:43:02 +0200 | [diff] [blame] | 876 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 877 | # The handler must not be called on unblock |
| 878 | try: |
| 879 | signal.pthread_sigmask(signal.SIG_UNBLOCK, [blocked]) |
| 880 | except ZeroDivisionError: |
| 881 | print("the signal handler has been called", |
| 882 | file=sys.stderr) |
| 883 | sys.exit(1) |
| 884 | except BaseException as err: |
| 885 | print("error: {}".format(err), file=sys.stderr) |
| 886 | sys.stderr.flush() |
| 887 | sys.exit(1) |
| 888 | ''' % (test.strip(), blocked) |
Victor Stinner | 415007e | 2011-06-13 16:19:06 +0200 | [diff] [blame] | 889 | |
Ross Lagerwall | bc80822 | 2011-06-25 12:13:40 +0200 | [diff] [blame] | 890 | # sig*wait* must be called with the signal blocked: since the current |
Victor Stinner | 9e8b82f | 2011-06-29 10:43:02 +0200 | [diff] [blame] | 891 | # process might have several threads running, use a subprocess to have |
| 892 | # a single thread. |
| 893 | assert_python_ok('-c', code) |
Victor Stinner | af49460 | 2011-06-10 12:48:13 +0200 | [diff] [blame] | 894 | |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 895 | @unittest.skipUnless(hasattr(signal, 'sigwait'), |
| 896 | 'need signal.sigwait()') |
Ross Lagerwall | bc80822 | 2011-06-25 12:13:40 +0200 | [diff] [blame] | 897 | def test_sigwait(self): |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 898 | self.wait_helper(signal.SIGALRM, ''' |
| 899 | def test(signum): |
Ross Lagerwall | bc80822 | 2011-06-25 12:13:40 +0200 | [diff] [blame] | 900 | signal.alarm(1) |
Victor Stinner | 9e8b82f | 2011-06-29 10:43:02 +0200 | [diff] [blame] | 901 | received = signal.sigwait([signum]) |
Giampaolo Rodola' | e09fb71 | 2014-04-04 15:34:17 +0200 | [diff] [blame] | 902 | assert isinstance(received, signal.Signals), received |
Victor Stinner | 0a01f13 | 2011-07-04 18:06:35 +0200 | [diff] [blame] | 903 | if received != signum: |
| 904 | raise Exception('received %s, not %s' % (received, signum)) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 905 | ''') |
Ross Lagerwall | bc80822 | 2011-06-25 12:13:40 +0200 | [diff] [blame] | 906 | |
| 907 | @unittest.skipUnless(hasattr(signal, 'sigwaitinfo'), |
| 908 | 'need signal.sigwaitinfo()') |
| 909 | def test_sigwaitinfo(self): |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 910 | self.wait_helper(signal.SIGALRM, ''' |
| 911 | def test(signum): |
Ross Lagerwall | bc80822 | 2011-06-25 12:13:40 +0200 | [diff] [blame] | 912 | signal.alarm(1) |
| 913 | info = signal.sigwaitinfo([signum]) |
Victor Stinner | 0a01f13 | 2011-07-04 18:06:35 +0200 | [diff] [blame] | 914 | if info.si_signo != signum: |
| 915 | raise Exception("info.si_signo != %s" % signum) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 916 | ''') |
Ross Lagerwall | bc80822 | 2011-06-25 12:13:40 +0200 | [diff] [blame] | 917 | |
| 918 | @unittest.skipUnless(hasattr(signal, 'sigtimedwait'), |
| 919 | 'need signal.sigtimedwait()') |
| 920 | def test_sigtimedwait(self): |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 921 | self.wait_helper(signal.SIGALRM, ''' |
| 922 | def test(signum): |
Ross Lagerwall | bc80822 | 2011-06-25 12:13:40 +0200 | [diff] [blame] | 923 | signal.alarm(1) |
Victor Stinner | 643cd68 | 2012-03-02 22:54:03 +0100 | [diff] [blame] | 924 | info = signal.sigtimedwait([signum], 10.1000) |
Victor Stinner | 0a01f13 | 2011-07-04 18:06:35 +0200 | [diff] [blame] | 925 | if info.si_signo != signum: |
| 926 | raise Exception('info.si_signo != %s' % signum) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 927 | ''') |
Ross Lagerwall | bc80822 | 2011-06-25 12:13:40 +0200 | [diff] [blame] | 928 | |
Ross Lagerwall | bc80822 | 2011-06-25 12:13:40 +0200 | [diff] [blame] | 929 | @unittest.skipUnless(hasattr(signal, 'sigtimedwait'), |
| 930 | 'need signal.sigtimedwait()') |
| 931 | def test_sigtimedwait_poll(self): |
Victor Stinner | 9e8b82f | 2011-06-29 10:43:02 +0200 | [diff] [blame] | 932 | # check that polling with sigtimedwait works |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 933 | self.wait_helper(signal.SIGALRM, ''' |
| 934 | def test(signum): |
Victor Stinner | 9e8b82f | 2011-06-29 10:43:02 +0200 | [diff] [blame] | 935 | import os |
| 936 | os.kill(os.getpid(), signum) |
Victor Stinner | 643cd68 | 2012-03-02 22:54:03 +0100 | [diff] [blame] | 937 | info = signal.sigtimedwait([signum], 0) |
Victor Stinner | 0a01f13 | 2011-07-04 18:06:35 +0200 | [diff] [blame] | 938 | if info.si_signo != signum: |
| 939 | raise Exception('info.si_signo != %s' % signum) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 940 | ''') |
Ross Lagerwall | bc80822 | 2011-06-25 12:13:40 +0200 | [diff] [blame] | 941 | |
| 942 | @unittest.skipUnless(hasattr(signal, 'sigtimedwait'), |
| 943 | 'need signal.sigtimedwait()') |
| 944 | def test_sigtimedwait_timeout(self): |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 945 | self.wait_helper(signal.SIGALRM, ''' |
| 946 | def test(signum): |
Victor Stinner | 643cd68 | 2012-03-02 22:54:03 +0100 | [diff] [blame] | 947 | received = signal.sigtimedwait([signum], 1.0) |
Victor Stinner | 0a01f13 | 2011-07-04 18:06:35 +0200 | [diff] [blame] | 948 | if received is not None: |
| 949 | raise Exception("received=%r" % (received,)) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 950 | ''') |
Ross Lagerwall | bc80822 | 2011-06-25 12:13:40 +0200 | [diff] [blame] | 951 | |
| 952 | @unittest.skipUnless(hasattr(signal, 'sigtimedwait'), |
| 953 | 'need signal.sigtimedwait()') |
| 954 | def test_sigtimedwait_negative_timeout(self): |
| 955 | signum = signal.SIGALRM |
Victor Stinner | 643cd68 | 2012-03-02 22:54:03 +0100 | [diff] [blame] | 956 | self.assertRaises(ValueError, signal.sigtimedwait, [signum], -1.0) |
Ross Lagerwall | bc80822 | 2011-06-25 12:13:40 +0200 | [diff] [blame] | 957 | |
Ross Lagerwall | bc80822 | 2011-06-25 12:13:40 +0200 | [diff] [blame] | 958 | @unittest.skipUnless(hasattr(signal, 'sigwait'), |
| 959 | 'need signal.sigwait()') |
Victor Stinner | 415007e | 2011-06-13 16:19:06 +0200 | [diff] [blame] | 960 | @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'), |
| 961 | 'need signal.pthread_sigmask()') |
Victor Stinner | 10c30d6 | 2011-06-10 01:39:53 +0200 | [diff] [blame] | 962 | def test_sigwait_thread(self): |
Victor Stinner | 415007e | 2011-06-13 16:19:06 +0200 | [diff] [blame] | 963 | # Check that calling sigwait() from a thread doesn't suspend the whole |
| 964 | # process. A new interpreter is spawned to avoid problems when mixing |
| 965 | # threads and fork(): only async-safe functions are allowed between |
| 966 | # fork() and exec(). |
| 967 | assert_python_ok("-c", """if True: |
| 968 | import os, threading, sys, time, signal |
Victor Stinner | 10c30d6 | 2011-06-10 01:39:53 +0200 | [diff] [blame] | 969 | |
Victor Stinner | 415007e | 2011-06-13 16:19:06 +0200 | [diff] [blame] | 970 | # the default handler terminates the process |
| 971 | signum = signal.SIGUSR1 |
| 972 | |
| 973 | def kill_later(): |
| 974 | # wait until the main thread is waiting in sigwait() |
| 975 | time.sleep(1) |
| 976 | os.kill(os.getpid(), signum) |
| 977 | |
| 978 | # the signal must be blocked by all the threads |
| 979 | signal.pthread_sigmask(signal.SIG_BLOCK, [signum]) |
| 980 | killer = threading.Thread(target=kill_later) |
Victor Stinner | af49460 | 2011-06-10 12:48:13 +0200 | [diff] [blame] | 981 | killer.start() |
| 982 | received = signal.sigwait([signum]) |
| 983 | if received != signum: |
| 984 | print("sigwait() received %s, not %s" % (received, signum), |
| 985 | file=sys.stderr) |
Victor Stinner | 415007e | 2011-06-13 16:19:06 +0200 | [diff] [blame] | 986 | sys.exit(1) |
Victor Stinner | 10c30d6 | 2011-06-10 01:39:53 +0200 | [diff] [blame] | 987 | killer.join() |
Victor Stinner | 415007e | 2011-06-13 16:19:06 +0200 | [diff] [blame] | 988 | # unblock the signal, which should have been cleared by sigwait() |
| 989 | signal.pthread_sigmask(signal.SIG_UNBLOCK, [signum]) |
| 990 | """) |
Victor Stinner | af49460 | 2011-06-10 12:48:13 +0200 | [diff] [blame] | 991 | |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 992 | @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'), |
| 993 | 'need signal.pthread_sigmask()') |
| 994 | def test_pthread_sigmask_arguments(self): |
| 995 | self.assertRaises(TypeError, signal.pthread_sigmask) |
| 996 | self.assertRaises(TypeError, signal.pthread_sigmask, 1) |
| 997 | self.assertRaises(TypeError, signal.pthread_sigmask, 1, 2, 3) |
| 998 | self.assertRaises(OSError, signal.pthread_sigmask, 1700, []) |
Antoine Pitrou | 9d3627e | 2018-05-04 13:00:50 +0200 | [diff] [blame] | 999 | with self.assertRaises(ValueError): |
| 1000 | signal.pthread_sigmask(signal.SIG_BLOCK, [signal.NSIG]) |
Serhiy Storchaka | d54cfb1 | 2018-05-08 07:48:50 +0300 | [diff] [blame] | 1001 | with self.assertRaises(ValueError): |
| 1002 | signal.pthread_sigmask(signal.SIG_BLOCK, [0]) |
| 1003 | with self.assertRaises(ValueError): |
| 1004 | signal.pthread_sigmask(signal.SIG_BLOCK, [1<<1000]) |
Antoine Pitrou | 9d3627e | 2018-05-04 13:00:50 +0200 | [diff] [blame] | 1005 | |
| 1006 | @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'), |
| 1007 | 'need signal.pthread_sigmask()') |
| 1008 | def test_pthread_sigmask_valid_signals(self): |
| 1009 | s = signal.pthread_sigmask(signal.SIG_BLOCK, signal.valid_signals()) |
| 1010 | self.addCleanup(signal.pthread_sigmask, signal.SIG_SETMASK, s) |
| 1011 | # Get current blocked set |
| 1012 | s = signal.pthread_sigmask(signal.SIG_UNBLOCK, signal.valid_signals()) |
| 1013 | self.assertLessEqual(s, signal.valid_signals()) |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 1014 | |
| 1015 | @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'), |
| 1016 | 'need signal.pthread_sigmask()') |
| 1017 | def test_pthread_sigmask(self): |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 1018 | code = """if 1: |
| 1019 | import signal |
| 1020 | import os; import threading |
| 1021 | |
| 1022 | def handler(signum, frame): |
| 1023 | 1/0 |
| 1024 | |
| 1025 | def kill(signum): |
| 1026 | os.kill(os.getpid(), signum) |
| 1027 | |
Giampaolo Rodola' | e09fb71 | 2014-04-04 15:34:17 +0200 | [diff] [blame] | 1028 | def check_mask(mask): |
| 1029 | for sig in mask: |
| 1030 | assert isinstance(sig, signal.Signals), repr(sig) |
| 1031 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 1032 | def read_sigmask(): |
Giampaolo Rodola' | e09fb71 | 2014-04-04 15:34:17 +0200 | [diff] [blame] | 1033 | sigmask = signal.pthread_sigmask(signal.SIG_BLOCK, []) |
| 1034 | check_mask(sigmask) |
| 1035 | return sigmask |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 1036 | |
Victor Stinner | b3e7219 | 2011-05-08 01:46:11 +0200 | [diff] [blame] | 1037 | signum = signal.SIGUSR1 |
Victor Stinner | 6fd49e1 | 2011-05-04 12:38:03 +0200 | [diff] [blame] | 1038 | |
Victor Stinner | d0e516d | 2011-05-03 14:57:12 +0200 | [diff] [blame] | 1039 | # Install our signal handler |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 1040 | old_handler = signal.signal(signum, handler) |
Victor Stinner | a929335 | 2011-04-30 15:21:58 +0200 | [diff] [blame] | 1041 | |
Victor Stinner | d0e516d | 2011-05-03 14:57:12 +0200 | [diff] [blame] | 1042 | # Unblock SIGUSR1 (and copy the old mask) to test our signal handler |
Victor Stinner | a929335 | 2011-04-30 15:21:58 +0200 | [diff] [blame] | 1043 | old_mask = signal.pthread_sigmask(signal.SIG_UNBLOCK, [signum]) |
Giampaolo Rodola' | e09fb71 | 2014-04-04 15:34:17 +0200 | [diff] [blame] | 1044 | check_mask(old_mask) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 1045 | try: |
| 1046 | kill(signum) |
| 1047 | except ZeroDivisionError: |
| 1048 | pass |
| 1049 | else: |
| 1050 | raise Exception("ZeroDivisionError not raised") |
Victor Stinner | a929335 | 2011-04-30 15:21:58 +0200 | [diff] [blame] | 1051 | |
Victor Stinner | d0e516d | 2011-05-03 14:57:12 +0200 | [diff] [blame] | 1052 | # Block and then raise SIGUSR1. The signal is blocked: the signal |
| 1053 | # handler is not called, and the signal is now pending |
Giampaolo Rodola' | e09fb71 | 2014-04-04 15:34:17 +0200 | [diff] [blame] | 1054 | mask = signal.pthread_sigmask(signal.SIG_BLOCK, [signum]) |
| 1055 | check_mask(mask) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 1056 | kill(signum) |
Victor Stinner | a929335 | 2011-04-30 15:21:58 +0200 | [diff] [blame] | 1057 | |
Victor Stinner | d0e516d | 2011-05-03 14:57:12 +0200 | [diff] [blame] | 1058 | # Check the new mask |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 1059 | blocked = read_sigmask() |
Giampaolo Rodola' | e09fb71 | 2014-04-04 15:34:17 +0200 | [diff] [blame] | 1060 | check_mask(blocked) |
Victor Stinner | 0a01f13 | 2011-07-04 18:06:35 +0200 | [diff] [blame] | 1061 | if signum not in blocked: |
| 1062 | raise Exception("%s not in %s" % (signum, blocked)) |
| 1063 | if old_mask ^ blocked != {signum}: |
| 1064 | raise Exception("%s ^ %s != {%s}" % (old_mask, blocked, signum)) |
Victor Stinner | a929335 | 2011-04-30 15:21:58 +0200 | [diff] [blame] | 1065 | |
Victor Stinner | d0e516d | 2011-05-03 14:57:12 +0200 | [diff] [blame] | 1066 | # Unblock SIGUSR1 |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 1067 | try: |
R David Murray | fc06999 | 2013-12-13 20:52:19 -0500 | [diff] [blame] | 1068 | # unblock the pending signal calls immediately the signal handler |
Victor Stinner | d0e516d | 2011-05-03 14:57:12 +0200 | [diff] [blame] | 1069 | signal.pthread_sigmask(signal.SIG_UNBLOCK, [signum]) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 1070 | except ZeroDivisionError: |
| 1071 | pass |
| 1072 | else: |
| 1073 | raise Exception("ZeroDivisionError not raised") |
| 1074 | try: |
| 1075 | kill(signum) |
| 1076 | except ZeroDivisionError: |
| 1077 | pass |
| 1078 | else: |
| 1079 | raise Exception("ZeroDivisionError not raised") |
Victor Stinner | a929335 | 2011-04-30 15:21:58 +0200 | [diff] [blame] | 1080 | |
Victor Stinner | d0e516d | 2011-05-03 14:57:12 +0200 | [diff] [blame] | 1081 | # Check the new mask |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 1082 | unblocked = read_sigmask() |
Victor Stinner | 0a01f13 | 2011-07-04 18:06:35 +0200 | [diff] [blame] | 1083 | if signum in unblocked: |
| 1084 | raise Exception("%s in %s" % (signum, unblocked)) |
| 1085 | if blocked ^ unblocked != {signum}: |
| 1086 | raise Exception("%s ^ %s != {%s}" % (blocked, unblocked, signum)) |
| 1087 | if old_mask != unblocked: |
| 1088 | raise Exception("%s != %s" % (old_mask, unblocked)) |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 1089 | """ |
| 1090 | assert_python_ok('-c', code) |
| 1091 | |
Victor Stinner | d554cdf | 2011-07-04 17:49:40 +0200 | [diff] [blame] | 1092 | @unittest.skipUnless(hasattr(signal, 'pthread_kill'), |
| 1093 | 'need signal.pthread_kill()') |
| 1094 | def test_pthread_kill_main_thread(self): |
| 1095 | # Test that a signal can be sent to the main thread with pthread_kill() |
| 1096 | # before any other thread has been created (see issue #12392). |
| 1097 | code = """if True: |
| 1098 | import threading |
| 1099 | import signal |
| 1100 | import sys |
| 1101 | |
| 1102 | def handler(signum, frame): |
| 1103 | sys.exit(3) |
| 1104 | |
| 1105 | signal.signal(signal.SIGUSR1, handler) |
| 1106 | signal.pthread_kill(threading.get_ident(), signal.SIGUSR1) |
| 1107 | sys.exit(2) |
| 1108 | """ |
| 1109 | |
| 1110 | with spawn_python('-c', code) as process: |
| 1111 | stdout, stderr = process.communicate() |
| 1112 | exitcode = process.wait() |
| 1113 | if exitcode != 3: |
| 1114 | raise Exception("Child error (exit code %s): %s" % |
| 1115 | (exitcode, stdout)) |
Victor Stinner | a929335 | 2011-04-30 15:21:58 +0200 | [diff] [blame] | 1116 | |
| 1117 | |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 1118 | class StressTest(unittest.TestCase): |
| 1119 | """ |
| 1120 | Stress signal delivery, especially when a signal arrives in |
| 1121 | the middle of recomputing the signal state or executing |
| 1122 | previously tripped signal handlers. |
| 1123 | """ |
| 1124 | |
Antoine Pitrou | f7d090c | 2017-06-29 16:40:14 +0200 | [diff] [blame] | 1125 | def setsig(self, signum, handler): |
| 1126 | old_handler = signal.signal(signum, handler) |
| 1127 | self.addCleanup(signal.signal, signum, old_handler) |
| 1128 | |
| 1129 | def measure_itimer_resolution(self): |
| 1130 | N = 20 |
| 1131 | times = [] |
| 1132 | |
| 1133 | def handler(signum=None, frame=None): |
| 1134 | if len(times) < N: |
| 1135 | times.append(time.perf_counter()) |
| 1136 | # 1 µs is the smallest possible timer interval, |
| 1137 | # we want to measure what the concrete duration |
| 1138 | # will be on this platform |
| 1139 | signal.setitimer(signal.ITIMER_REAL, 1e-6) |
| 1140 | |
| 1141 | self.addCleanup(signal.setitimer, signal.ITIMER_REAL, 0) |
| 1142 | self.setsig(signal.SIGALRM, handler) |
| 1143 | handler() |
| 1144 | while len(times) < N: |
| 1145 | time.sleep(1e-3) |
| 1146 | |
| 1147 | durations = [times[i+1] - times[i] for i in range(len(times) - 1)] |
| 1148 | med = statistics.median(durations) |
| 1149 | if support.verbose: |
| 1150 | print("detected median itimer() resolution: %.6f s." % (med,)) |
| 1151 | return med |
| 1152 | |
| 1153 | def decide_itimer_count(self): |
| 1154 | # Some systems have poor setitimer() resolution (for example |
| 1155 | # measured around 20 ms. on FreeBSD 9), so decide on a reasonable |
| 1156 | # number of sequential timers based on that. |
| 1157 | reso = self.measure_itimer_resolution() |
| 1158 | if reso <= 1e-4: |
| 1159 | return 10000 |
| 1160 | elif reso <= 1e-2: |
| 1161 | return 100 |
| 1162 | else: |
| 1163 | self.skipTest("detected itimer resolution (%.3f s.) too high " |
| 1164 | "(> 10 ms.) on this platform (or system too busy)" |
| 1165 | % (reso,)) |
| 1166 | |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 1167 | @unittest.skipUnless(hasattr(signal, "setitimer"), |
| 1168 | "test needs setitimer()") |
| 1169 | def test_stress_delivery_dependent(self): |
| 1170 | """ |
| 1171 | This test uses dependent signal handlers. |
| 1172 | """ |
Antoine Pitrou | f7d090c | 2017-06-29 16:40:14 +0200 | [diff] [blame] | 1173 | N = self.decide_itimer_count() |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 1174 | sigs = [] |
| 1175 | |
| 1176 | def first_handler(signum, frame): |
| 1177 | # 1e-6 is the minimum non-zero value for `setitimer()`. |
| 1178 | # Choose a random delay so as to improve chances of |
| 1179 | # triggering a race condition. Ideally the signal is received |
| 1180 | # when inside critical signal-handling routines such as |
| 1181 | # Py_MakePendingCalls(). |
| 1182 | signal.setitimer(signal.ITIMER_REAL, 1e-6 + random.random() * 1e-5) |
| 1183 | |
| 1184 | def second_handler(signum=None, frame=None): |
| 1185 | sigs.append(signum) |
| 1186 | |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 1187 | # Here on Linux, SIGPROF > SIGALRM > SIGUSR1. By using both |
| 1188 | # ascending and descending sequences (SIGUSR1 then SIGALRM, |
| 1189 | # SIGPROF then SIGALRM), we maximize chances of hitting a bug. |
Antoine Pitrou | f7d090c | 2017-06-29 16:40:14 +0200 | [diff] [blame] | 1190 | self.setsig(signal.SIGPROF, first_handler) |
| 1191 | self.setsig(signal.SIGUSR1, first_handler) |
| 1192 | self.setsig(signal.SIGALRM, second_handler) # for ITIMER_REAL |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 1193 | |
| 1194 | expected_sigs = 0 |
Victor Stinner | 2cf4c20 | 2018-12-17 09:36:36 +0100 | [diff] [blame] | 1195 | deadline = time.monotonic() + 15.0 |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 1196 | |
| 1197 | while expected_sigs < N: |
| 1198 | os.kill(os.getpid(), signal.SIGPROF) |
| 1199 | expected_sigs += 1 |
| 1200 | # Wait for handlers to run to avoid signal coalescing |
Victor Stinner | 2cf4c20 | 2018-12-17 09:36:36 +0100 | [diff] [blame] | 1201 | while len(sigs) < expected_sigs and time.monotonic() < deadline: |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 1202 | time.sleep(1e-5) |
| 1203 | |
| 1204 | os.kill(os.getpid(), signal.SIGUSR1) |
| 1205 | expected_sigs += 1 |
Victor Stinner | 2cf4c20 | 2018-12-17 09:36:36 +0100 | [diff] [blame] | 1206 | while len(sigs) < expected_sigs and time.monotonic() < deadline: |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 1207 | time.sleep(1e-5) |
| 1208 | |
| 1209 | # All ITIMER_REAL signals should have been delivered to the |
| 1210 | # Python handler |
| 1211 | self.assertEqual(len(sigs), N, "Some signals were lost") |
| 1212 | |
| 1213 | @unittest.skipUnless(hasattr(signal, "setitimer"), |
| 1214 | "test needs setitimer()") |
| 1215 | def test_stress_delivery_simultaneous(self): |
| 1216 | """ |
| 1217 | This test uses simultaneous signal handlers. |
| 1218 | """ |
Antoine Pitrou | f7d090c | 2017-06-29 16:40:14 +0200 | [diff] [blame] | 1219 | N = self.decide_itimer_count() |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 1220 | sigs = [] |
| 1221 | |
| 1222 | def handler(signum, frame): |
| 1223 | sigs.append(signum) |
| 1224 | |
Antoine Pitrou | f7d090c | 2017-06-29 16:40:14 +0200 | [diff] [blame] | 1225 | self.setsig(signal.SIGUSR1, handler) |
| 1226 | self.setsig(signal.SIGALRM, handler) # for ITIMER_REAL |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 1227 | |
| 1228 | expected_sigs = 0 |
Victor Stinner | 2cf4c20 | 2018-12-17 09:36:36 +0100 | [diff] [blame] | 1229 | deadline = time.monotonic() + 15.0 |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 1230 | |
| 1231 | while expected_sigs < N: |
| 1232 | # Hopefully the SIGALRM will be received somewhere during |
| 1233 | # initial processing of SIGUSR1. |
| 1234 | signal.setitimer(signal.ITIMER_REAL, 1e-6 + random.random() * 1e-5) |
| 1235 | os.kill(os.getpid(), signal.SIGUSR1) |
| 1236 | |
| 1237 | expected_sigs += 2 |
| 1238 | # Wait for handlers to run to avoid signal coalescing |
Victor Stinner | 2cf4c20 | 2018-12-17 09:36:36 +0100 | [diff] [blame] | 1239 | while len(sigs) < expected_sigs and time.monotonic() < deadline: |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 1240 | time.sleep(1e-5) |
| 1241 | |
| 1242 | # All ITIMER_REAL signals should have been delivered to the |
| 1243 | # Python handler |
| 1244 | self.assertEqual(len(sigs), N, "Some signals were lost") |
| 1245 | |
Vladimir Matveev | c24c6c2 | 2019-01-08 01:58:25 -0800 | [diff] [blame] | 1246 | class RaiseSignalTest(unittest.TestCase): |
| 1247 | |
| 1248 | def test_sigint(self): |
Gregory P. Smith | 38f11cc | 2019-02-16 12:57:40 -0800 | [diff] [blame] | 1249 | with self.assertRaises(KeyboardInterrupt): |
Vladimir Matveev | c24c6c2 | 2019-01-08 01:58:25 -0800 | [diff] [blame] | 1250 | signal.raise_signal(signal.SIGINT) |
Vladimir Matveev | c24c6c2 | 2019-01-08 01:58:25 -0800 | [diff] [blame] | 1251 | |
| 1252 | @unittest.skipIf(sys.platform != "win32", "Windows specific test") |
| 1253 | def test_invalid_argument(self): |
| 1254 | try: |
| 1255 | SIGHUP = 1 # not supported on win32 |
| 1256 | signal.raise_signal(SIGHUP) |
| 1257 | self.fail("OSError (Invalid argument) expected") |
| 1258 | except OSError as e: |
| 1259 | if e.errno == errno.EINVAL: |
| 1260 | pass |
| 1261 | else: |
| 1262 | raise |
| 1263 | |
| 1264 | def test_handler(self): |
| 1265 | is_ok = False |
| 1266 | def handler(a, b): |
| 1267 | nonlocal is_ok |
| 1268 | is_ok = True |
| 1269 | old_signal = signal.signal(signal.SIGINT, handler) |
| 1270 | self.addCleanup(signal.signal, signal.SIGINT, old_signal) |
| 1271 | |
| 1272 | signal.raise_signal(signal.SIGINT) |
| 1273 | self.assertTrue(is_ok) |
| 1274 | |
Antoine Pitrou | c08177a | 2017-06-28 23:29:29 +0200 | [diff] [blame] | 1275 | |
Zachary Ware | 38c707e | 2015-04-13 15:00:43 -0500 | [diff] [blame] | 1276 | def tearDownModule(): |
| 1277 | support.reap_children() |
Thomas Wouters | ed03b41 | 2007-08-28 21:37:11 +0000 | [diff] [blame] | 1278 | |
| 1279 | if __name__ == "__main__": |
Zachary Ware | 38c707e | 2015-04-13 15:00:43 -0500 | [diff] [blame] | 1280 | unittest.main() |