import multiprocessing import sys import threading import time import pytest import env from pybind11_tests import gil_scoped as m class ExtendedVirtClass(m.VirtClass): def virtual_func(self): pass def pure_virtual_func(self): pass def test_callback_py_obj(): m.test_callback_py_obj(lambda: None) def test_callback_std_func(): m.test_callback_std_func(lambda: None) def test_callback_virtual_func(): extended = ExtendedVirtClass() m.test_callback_virtual_func(extended) def test_callback_pure_virtual_func(): extended = ExtendedVirtClass() m.test_callback_pure_virtual_func(extended) def test_cross_module_gil_released(): """Makes sure that the GIL can be acquired by another module from a GIL-released state.""" m.test_cross_module_gil_released() # Should not raise a SIGSEGV def test_cross_module_gil_acquired(): """Makes sure that the GIL can be acquired by another module from a GIL-acquired state.""" m.test_cross_module_gil_acquired() # Should not raise a SIGSEGV def test_cross_module_gil_inner_custom_released(): """Makes sure that the GIL can be acquired/released by another module from a GIL-released state using custom locking logic.""" m.test_cross_module_gil_inner_custom_released() def test_cross_module_gil_inner_custom_acquired(): """Makes sure that the GIL can be acquired/acquired by another module from a GIL-acquired state using custom locking logic.""" m.test_cross_module_gil_inner_custom_acquired() def test_cross_module_gil_inner_pybind11_released(): """Makes sure that the GIL can be acquired/released by another module from a GIL-released state using pybind11 locking logic.""" m.test_cross_module_gil_inner_pybind11_released() def test_cross_module_gil_inner_pybind11_acquired(): """Makes sure that the GIL can be acquired/acquired by another module from a GIL-acquired state using pybind11 locking logic.""" m.test_cross_module_gil_inner_pybind11_acquired() def test_cross_module_gil_nested_custom_released(): """Makes sure that the GIL can be nested acquired/released by another module from a GIL-released state using custom locking logic.""" m.test_cross_module_gil_nested_custom_released() def test_cross_module_gil_nested_custom_acquired(): """Makes sure that the GIL can be nested acquired/acquired by another module from a GIL-acquired state using custom locking logic.""" m.test_cross_module_gil_nested_custom_acquired() def test_cross_module_gil_nested_pybind11_released(): """Makes sure that the GIL can be nested acquired/released by another module from a GIL-released state using pybind11 locking logic.""" m.test_cross_module_gil_nested_pybind11_released() def test_cross_module_gil_nested_pybind11_acquired(): """Makes sure that the GIL can be nested acquired/acquired by another module from a GIL-acquired state using pybind11 locking logic.""" m.test_cross_module_gil_nested_pybind11_acquired() def test_release_acquire(): assert m.test_release_acquire(0xAB) == "171" def test_nested_acquire(): assert m.test_nested_acquire(0xAB) == "171" def test_multi_acquire_release_cross_module(): for bits in range(16 * 8): internals_ids = m.test_multi_acquire_release_cross_module(bits) assert len(internals_ids) == 2 if bits % 8 else 1 # Intentionally putting human review in the loop here, to guard against accidents. VARS_BEFORE_ALL_BASIC_TESTS = dict(vars()) # Make a copy of the dict (critical). ALL_BASIC_TESTS = ( test_callback_py_obj, test_callback_std_func, test_callback_virtual_func, test_callback_pure_virtual_func, test_cross_module_gil_released, test_cross_module_gil_acquired, test_cross_module_gil_inner_custom_released, test_cross_module_gil_inner_custom_acquired, test_cross_module_gil_inner_pybind11_released, test_cross_module_gil_inner_pybind11_acquired, test_cross_module_gil_nested_custom_released, test_cross_module_gil_nested_custom_acquired, test_cross_module_gil_nested_pybind11_released, test_cross_module_gil_nested_pybind11_acquired, test_release_acquire, test_nested_acquire, test_multi_acquire_release_cross_module, ) def test_all_basic_tests_completeness(): num_found = 0 for key, value in VARS_BEFORE_ALL_BASIC_TESTS.items(): if not key.startswith("test_"): continue assert value in ALL_BASIC_TESTS num_found += 1 assert len(ALL_BASIC_TESTS) == num_found def _intentional_deadlock(): m.intentional_deadlock() ALL_BASIC_TESTS_PLUS_INTENTIONAL_DEADLOCK = ALL_BASIC_TESTS + (_intentional_deadlock,) def _run_in_process(target, *args, **kwargs): if len(args) == 0: test_fn = target else: test_fn = args[0] # Do not need to wait much, 10s should be more than enough. timeout = 0.1 if test_fn is _intentional_deadlock else 10 process = multiprocessing.Process(target=target, args=args, kwargs=kwargs) process.daemon = True try: t_start = time.time() process.start() if timeout >= 100: # For debugging. print( "\nprocess.pid STARTED", process.pid, (sys.argv, target, args, kwargs) ) print(f"COPY-PASTE-THIS: gdb {sys.argv[0]} -p {process.pid}", flush=True) process.join(timeout=timeout) if timeout >= 100: print("\nprocess.pid JOINED", process.pid, flush=True) t_delta = time.time() - t_start if process.exitcode == 66 and m.defined_THREAD_SANITIZER: # Issue #2754 # WOULD-BE-NICE-TO-HAVE: Check that the message below is actually in the output. # Maybe this could work: # https://gist.github.com/alexeygrigorev/01ce847f2e721b513b42ea4a6c96905e pytest.skip( "ThreadSanitizer: starting new threads after multi-threaded fork is not supported." ) elif test_fn is _intentional_deadlock: assert process.exitcode is None return 0 elif process.exitcode is None: assert t_delta > 0.9 * timeout msg = "DEADLOCK, most likely, exactly what this test is meant to detect." if env.PYPY and env.WIN: pytest.skip(msg) raise RuntimeError(msg) return process.exitcode finally: if process.is_alive(): process.terminate() def _run_in_threads(test_fn, num_threads, parallel): threads = [] for _ in range(num_threads): thread = threading.Thread(target=test_fn) thread.daemon = True thread.start() if parallel: threads.append(thread) else: thread.join() for thread in threads: thread.join() # TODO: FIXME, sometimes returns -11 (segfault) instead of 0 on macOS Python 3.9 @pytest.mark.parametrize("test_fn", ALL_BASIC_TESTS_PLUS_INTENTIONAL_DEADLOCK) def test_run_in_process_one_thread(test_fn): """Makes sure there is no GIL deadlock when running in a thread. It runs in a separate process to be able to stop and assert if it deadlocks. """ assert _run_in_process(_run_in_threads, test_fn, num_threads=1, parallel=False) == 0 # TODO: FIXME on macOS Python 3.9 @pytest.mark.parametrize("test_fn", ALL_BASIC_TESTS_PLUS_INTENTIONAL_DEADLOCK) def test_run_in_process_multiple_threads_parallel(test_fn): """Makes sure there is no GIL deadlock when running in a thread multiple times in parallel. It runs in a separate process to be able to stop and assert if it deadlocks. """ assert _run_in_process(_run_in_threads, test_fn, num_threads=8, parallel=True) == 0 # TODO: FIXME on macOS Python 3.9 @pytest.mark.parametrize("test_fn", ALL_BASIC_TESTS_PLUS_INTENTIONAL_DEADLOCK) def test_run_in_process_multiple_threads_sequential(test_fn): """Makes sure there is no GIL deadlock when running in a thread multiple times sequentially. It runs in a separate process to be able to stop and assert if it deadlocks. """ assert _run_in_process(_run_in_threads, test_fn, num_threads=8, parallel=False) == 0 # TODO: FIXME on macOS Python 3.9 @pytest.mark.parametrize("test_fn", ALL_BASIC_TESTS_PLUS_INTENTIONAL_DEADLOCK) def test_run_in_process_direct(test_fn): """Makes sure there is no GIL deadlock when using processes. This test is for completion, but it was never an issue. """ assert _run_in_process(test_fn) == 0