mirror of https://github.com/pybind/pybind11.git
Add `PYBIND11_SIMPLE_GIL_MANAGEMENT` option (cmake, C++ define) (#4216)
* Add option to force the use of the PYPY GIL scoped acquire/release logic to support nested gil access, see https://github.com/pybind/pybind11/issues/1276 and https://github.com/pytorch/pytorch/issues/83101 * Apply suggestions from code review * Update CMakeLists.txt * docs: update upgrade guide * Update docs/upgrade.rst * All bells & whistles. * Add Reminder to common.h, so that we will not forget to purge `!WITH_THREAD` branches when dropping Python 3.6 * New sentence instead of semicolon. * Temporarily pull in snapshot of PR #4246 * Add `test_release_acquire` * Add more unit tests for nested gil locking * Add test_report_builtins_internals_keys * Very minor enhancement: sort list only after filtering. * Revert change in docs/upgrade.rst * Add test_multi_acquire_release_cross_module, while also forcing unique PYBIND11_INTERNALS_VERSION for cross_module_gil_utils.cpp * Hopefully fix apparently new ICC error. ``` 2022-10-28T07:57:54.5187728Z -- The CXX compiler identification is Intel 2021.7.0.20220726 ... 2022-10-28T07:58:53.6758994Z icpc: remark #10441: The Intel(R) C++ Compiler Classic (ICC) is deprecated and will be removed from product release in the second half of 2023. The Intel(R) oneAPI DPC++/C++ Compiler (ICX) is the recommended compiler moving forward. Please transition to use this compiler. Use '-diag-disable=10441' to disable this message. 2022-10-28T07:58:54.5801597Z In file included from /home/runner/work/pybind11/pybind11/include/pybind11/detail/../detail/type_caster_base.h(15), 2022-10-28T07:58:54.5803794Z from /home/runner/work/pybind11/pybind11/include/pybind11/detail/../cast.h(15), 2022-10-28T07:58:54.5805740Z from /home/runner/work/pybind11/pybind11/include/pybind11/detail/../attr.h(14), 2022-10-28T07:58:54.5809556Z from /home/runner/work/pybind11/pybind11/include/pybind11/detail/class.h(12), 2022-10-28T07:58:54.5812154Z from /home/runner/work/pybind11/pybind11/include/pybind11/pybind11.h(13), 2022-10-28T07:58:54.5948523Z from /home/runner/work/pybind11/pybind11/tests/cross_module_gil_utils.cpp(13): 2022-10-28T07:58:54.5949009Z /home/runner/work/pybind11/pybind11/include/pybind11/detail/../detail/internals.h(177): error #2282: unrecognized GCC pragma 2022-10-28T07:58:54.5949374Z PYBIND11_TLS_KEY_INIT(tstate) 2022-10-28T07:58:54.5949579Z ^ 2022-10-28T07:58:54.5949695Z ``` * clang-tidy fixes * Workaround for PYPY WIN exitcode None * Revert "Temporarily pull in snapshot of PR #4246" This reverts commit 23ac16e859150f27fda25ca865cabcb4444e0770. * Another workaround for PYPY WIN exitcode None * Clean up how the tests are run "run in process" Part 1: uniformity * Clean up how the tests are run "run in process" Part 2: use `@pytest.mark.parametrize` and clean up the naming. * Skip some tests `#if defined(THREAD_SANITIZER)` (tested with TSAN using the Google-internal toolchain). * Run all tests again but ignore ThreadSanitizer exitcode 66 (this is less likely to mask unrelated ThreadSanitizer issues in the future). * bug fix: missing common.h include before using `PYBIND11_SIMPLE_GIL_MANAGEMENT` For the tests in the github CI this does not matter, because `PYBIND11_SIMPLE_GIL_MANAGEMENT` is always defined from the command line, but when monkey-patching common.h locally, it matters. * if process.exitcode is None: assert t_delta > 9.9 * More sophisiticated `_run_in_process()` implementation, clearly reporting `DEADLOCK`, additionally exercised via added `intentional_deadlock()` * Wrap m.intentional_deadlock in a Python function, for `ForkingPickler` compatibility. ``` > ForkingPickler(file, protocol).dump(obj) E TypeError: cannot pickle 'PyCapsule' object ``` Observed with all Windows builds including mingw but not PyPy, and macos-latest with Python 3.9, 3.10, 3.11 but not 3.6. * Add link to potential solution for WOULD-BE-NICE-TO-HAVE feature. * Add `SKIP_IF_DEADLOCK = True` option, to not pollute the CI results with expected `DEADLOCK` failures while we figure out what to do about them. * Add COPY-PASTE-THIS: gdb ... command (to be used for debugging the detected deadlock) * style: pre-commit fixes * Do better than automatic pre-commit fixes. * Add `PYBIND11_SIMPLE_GIL_MANAGEMENT` to `pytest_report_header()` (so that we can easily know when harvesting deadlock information from the CI logs). Co-authored-by: Arnim Balzer <arnim@seechange.ai> Co-authored-by: Henry Schreiner <HenrySchreinerIII@gmail.com> Co-authored-by: Ralf W. Grosse-Kunstleve <rwgk@google.com> Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
This commit is contained in:
Chekov2k
GitHub
parent
b07223fa69
commit
b07d08f600
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@ -102,10 +102,12 @@ jobs:
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run: python -m pip install pytest-github-actions-annotate-failures
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# First build - C++11 mode and inplace
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# More-or-less randomly adding -DPYBIND11_SIMPLE_GIL_MANAGEMENT=ON here.
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- name: Configure C++11 ${{ matrix.args }}
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run: >
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cmake -S . -B .
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-DPYBIND11_WERROR=ON
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-DPYBIND11_SIMPLE_GIL_MANAGEMENT=ON
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-DDOWNLOAD_CATCH=ON
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-DDOWNLOAD_EIGEN=ON
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-DCMAKE_CXX_STANDARD=11
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@ -129,10 +131,12 @@ jobs:
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run: git clean -fdx
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# Second build - C++17 mode and in a build directory
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# More-or-less randomly adding -DPYBIND11_SIMPLE_GIL_MANAGEMENT=OFF here.
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- name: Configure C++17
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run: >
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cmake -S . -B build2
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-DPYBIND11_WERROR=ON
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-DPYBIND11_SIMPLE_GIL_MANAGEMENT=OFF
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-DDOWNLOAD_CATCH=ON
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-DDOWNLOAD_EIGEN=ON
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-DCMAKE_CXX_STANDARD=17
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@ -91,10 +91,16 @@ endif()
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option(PYBIND11_INSTALL "Install pybind11 header files?" ${PYBIND11_MASTER_PROJECT})
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option(PYBIND11_TEST "Build pybind11 test suite?" ${PYBIND11_MASTER_PROJECT})
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option(PYBIND11_NOPYTHON "Disable search for Python" OFF)
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option(PYBIND11_SIMPLE_GIL_MANAGEMENT
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"Use simpler GIL management logic that does not support disassociation" OFF)
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set(PYBIND11_INTERNALS_VERSION
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""
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CACHE STRING "Override the ABI version, may be used to enable the unstable ABI.")
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if(PYBIND11_SIMPLE_GIL_MANAGEMENT)
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add_compile_definitions(PYBIND11_SIMPLE_GIL_MANAGEMENT)
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endif()
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cmake_dependent_option(
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USE_PYTHON_INCLUDE_DIR
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"Install pybind11 headers in Python include directory instead of default installation prefix"
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@ -206,6 +206,7 @@
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#endif
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#include <Python.h>
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// Reminder: WITH_THREAD is always defined if PY_VERSION_HEX >= 0x03070000
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#if PY_VERSION_HEX < 0x03060000
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# error "PYTHON < 3.6 IS UNSUPPORTED. pybind11 v2.9 was the last to support Python 2 and 3.5."
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#endif
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@ -229,6 +230,10 @@
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# undef copysign
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#endif
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#if defined(PYPY_VERSION) && !defined(PYBIND11_SIMPLE_GIL_MANAGEMENT)
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# define PYBIND11_SIMPLE_GIL_MANAGEMENT
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#endif
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#if defined(_MSC_VER)
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# if defined(PYBIND11_DEBUG_MARKER)
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# define _DEBUG
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@ -9,6 +9,12 @@
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#pragma once
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#include "common.h"
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#if defined(WITH_THREAD) && defined(PYBIND11_SIMPLE_GIL_MANAGEMENT)
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# include "../gil.h"
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#endif
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#include "../pytypes.h"
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#include <exception>
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@ -49,7 +55,7 @@ inline PyObject *make_object_base_type(PyTypeObject *metaclass);
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// `Py_LIMITED_API` anyway.
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# if PYBIND11_INTERNALS_VERSION > 4
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# define PYBIND11_TLS_KEY_REF Py_tss_t &
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# ifdef __GNUC__
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# if defined(__GNUC__) && !defined(__INTEL_COMPILER)
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// Clang on macOS warns due to `Py_tss_NEEDS_INIT` not specifying an initializer
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// for every field.
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# define PYBIND11_TLS_KEY_INIT(var) \
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@ -169,10 +175,12 @@ struct internals {
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PyTypeObject *default_metaclass;
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PyObject *instance_base;
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#if defined(WITH_THREAD)
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// Unused if PYBIND11_SIMPLE_GIL_MANAGEMENT is defined:
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PYBIND11_TLS_KEY_INIT(tstate)
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# if PYBIND11_INTERNALS_VERSION > 4
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PYBIND11_TLS_KEY_INIT(loader_life_support_tls_key)
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# endif // PYBIND11_INTERNALS_VERSION > 4
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// Unused if PYBIND11_SIMPLE_GIL_MANAGEMENT is defined:
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PyInterpreterState *istate = nullptr;
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~internals() {
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# if PYBIND11_INTERNALS_VERSION > 4
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@ -408,6 +416,10 @@ PYBIND11_NOINLINE internals &get_internals() {
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return **internals_pp;
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}
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#if defined(WITH_THREAD)
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# if defined(PYBIND11_SIMPLE_GIL_MANAGEMENT)
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gil_scoped_acquire gil;
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# else
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// Ensure that the GIL is held since we will need to make Python calls.
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// Cannot use py::gil_scoped_acquire here since that constructor calls get_internals.
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struct gil_scoped_acquire_local {
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@ -417,6 +429,8 @@ PYBIND11_NOINLINE internals &get_internals() {
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~gil_scoped_acquire_local() { PyGILState_Release(state); }
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const PyGILState_STATE state;
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} gil;
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# endif
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#endif
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error_scope err_scope;
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PYBIND11_STR_TYPE id(PYBIND11_INTERNALS_ID);
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@ -10,7 +10,10 @@
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#pragma once
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#include "detail/common.h"
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#if defined(WITH_THREAD) && !defined(PYBIND11_SIMPLE_GIL_MANAGEMENT)
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# include "detail/internals.h"
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#endif
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PYBIND11_NAMESPACE_BEGIN(PYBIND11_NAMESPACE)
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@ -21,7 +24,9 @@ PyThreadState *get_thread_state_unchecked();
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PYBIND11_NAMESPACE_END(detail)
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#if defined(WITH_THREAD) && !defined(PYPY_VERSION)
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#if defined(WITH_THREAD)
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# if !defined(PYBIND11_SIMPLE_GIL_MANAGEMENT)
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/* The functions below essentially reproduce the PyGILState_* API using a RAII
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* pattern, but there are a few important differences:
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@ -178,12 +183,14 @@ private:
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bool disassoc;
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bool active = true;
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};
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#elif defined(PYPY_VERSION)
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# else // PYBIND11_SIMPLE_GIL_MANAGEMENT
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class gil_scoped_acquire {
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PyGILState_STATE state;
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public:
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gil_scoped_acquire() { state = PyGILState_Ensure(); }
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gil_scoped_acquire() : state{PyGILState_Ensure()} {}
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gil_scoped_acquire(const gil_scoped_acquire &) = delete;
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gil_scoped_acquire &operator=(const gil_scoped_acquire &) = delete;
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~gil_scoped_acquire() { PyGILState_Release(state); }
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@ -194,19 +201,39 @@ class gil_scoped_release {
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PyThreadState *state;
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public:
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gil_scoped_release() { state = PyEval_SaveThread(); }
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gil_scoped_release() : state{PyEval_SaveThread()} {}
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gil_scoped_release(const gil_scoped_release &) = delete;
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gil_scoped_release &operator=(const gil_scoped_acquire &) = delete;
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~gil_scoped_release() { PyEval_RestoreThread(state); }
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void disarm() {}
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};
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#else
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# endif // PYBIND11_SIMPLE_GIL_MANAGEMENT
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#else // WITH_THREAD
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class gil_scoped_acquire {
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public:
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gil_scoped_acquire() {
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// Trick to suppress `unused variable` error messages (at call sites).
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(void) (this != (this + 1));
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}
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gil_scoped_acquire(const gil_scoped_acquire &) = delete;
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gil_scoped_acquire &operator=(const gil_scoped_acquire &) = delete;
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void disarm() {}
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};
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class gil_scoped_release {
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public:
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gil_scoped_release() {
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// Trick to suppress `unused variable` error messages (at call sites).
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(void) (this != (this + 1));
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}
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gil_scoped_release(const gil_scoped_release &) = delete;
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gil_scoped_release &operator=(const gil_scoped_acquire &) = delete;
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void disarm() {}
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};
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#endif
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#endif // WITH_THREAD
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PYBIND11_NAMESPACE_END(PYBIND11_NAMESPACE)
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@ -210,4 +210,5 @@ def pytest_report_header(config):
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f" {pybind11_tests.compiler_info}"
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f" {pybind11_tests.cpp_std}"
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f" {pybind11_tests.PYBIND11_INTERNALS_ID}"
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f" PYBIND11_SIMPLE_GIL_MANAGEMENT={pybind11_tests.PYBIND11_SIMPLE_GIL_MANAGEMENT}"
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)
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@ -6,9 +6,15 @@
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All rights reserved. Use of this source code is governed by a
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BSD-style license that can be found in the LICENSE file.
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*/
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#if defined(PYBIND11_INTERNALS_VERSION)
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# undef PYBIND11_INTERNALS_VERSION
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#endif
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#define PYBIND11_INTERNALS_VERSION 21814642 // Ensure this module has its own `internals` instance.
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#include <pybind11/pybind11.h>
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#include <cstdint>
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#include <string>
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#include <thread>
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// This file mimics a DSO that makes pybind11 calls but does not define a
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// PYBIND11_MODULE. The purpose is to test that such a DSO can create a
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@ -21,8 +27,54 @@
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namespace {
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namespace py = pybind11;
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void gil_acquire() { py::gil_scoped_acquire gil; }
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std::string gil_multi_acquire_release(unsigned bits) {
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if ((bits & 0x1u) != 0u) {
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py::gil_scoped_acquire gil;
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}
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if ((bits & 0x2u) != 0u) {
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py::gil_scoped_release gil;
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}
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if ((bits & 0x4u) != 0u) {
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py::gil_scoped_acquire gil;
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}
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if ((bits & 0x8u) != 0u) {
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py::gil_scoped_release gil;
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}
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return PYBIND11_INTERNALS_ID;
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}
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struct CustomAutoGIL {
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CustomAutoGIL() : gstate(PyGILState_Ensure()) {}
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~CustomAutoGIL() { PyGILState_Release(gstate); }
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PyGILState_STATE gstate;
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};
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struct CustomAutoNoGIL {
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CustomAutoNoGIL() : save(PyEval_SaveThread()) {}
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~CustomAutoNoGIL() { PyEval_RestoreThread(save); }
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PyThreadState *save;
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};
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template <typename Acquire, typename Release>
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void gil_acquire_inner() {
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Acquire acquire_outer;
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Acquire acquire_inner;
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Release release;
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}
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template <typename Acquire, typename Release>
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void gil_acquire_nested() {
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Acquire acquire_outer;
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Acquire acquire_inner;
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Release release;
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auto thread = std::thread(&gil_acquire_inner<Acquire, Release>);
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thread.join();
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}
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constexpr char kModuleName[] = "cross_module_gil_utils";
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struct PyModuleDef moduledef = {
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@ -30,6 +82,9 @@ struct PyModuleDef moduledef = {
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} // namespace
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#define ADD_FUNCTION(Name, ...) \
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PyModule_AddObject(m, Name, PyLong_FromVoidPtr(reinterpret_cast<void *>(&__VA_ARGS__)));
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extern "C" PYBIND11_EXPORT PyObject *PyInit_cross_module_gil_utils() {
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PyObject *m = PyModule_Create(&moduledef);
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@ -37,8 +92,16 @@ extern "C" PYBIND11_EXPORT PyObject *PyInit_cross_module_gil_utils() {
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if (m != nullptr) {
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static_assert(sizeof(&gil_acquire) == sizeof(void *),
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"Function pointer must have the same size as void*");
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PyModule_AddObject(
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m, "gil_acquire_funcaddr", PyLong_FromVoidPtr(reinterpret_cast<void *>(&gil_acquire)));
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ADD_FUNCTION("gil_acquire_funcaddr", gil_acquire)
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ADD_FUNCTION("gil_multi_acquire_release_funcaddr", gil_multi_acquire_release)
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ADD_FUNCTION("gil_acquire_inner_custom_funcaddr",
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gil_acquire_inner<CustomAutoGIL, CustomAutoNoGIL>)
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ADD_FUNCTION("gil_acquire_nested_custom_funcaddr",
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gil_acquire_nested<CustomAutoGIL, CustomAutoNoGIL>)
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ADD_FUNCTION("gil_acquire_inner_pybind11_funcaddr",
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gil_acquire_inner<py::gil_scoped_acquire, py::gil_scoped_release>)
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ADD_FUNCTION("gil_acquire_nested_pybind11_funcaddr",
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gil_acquire_nested<py::gil_scoped_acquire, py::gil_scoped_release>)
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}
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return m;
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|
|
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@ -89,6 +89,12 @@ PYBIND11_MODULE(pybind11_tests, m) {
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#endif
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m.attr("cpp_std") = cpp_std();
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m.attr("PYBIND11_INTERNALS_ID") = PYBIND11_INTERNALS_ID;
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m.attr("PYBIND11_SIMPLE_GIL_MANAGEMENT") =
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#if defined(PYBIND11_SIMPLE_GIL_MANAGEMENT)
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true;
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#else
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false;
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#endif
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|
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bind_ConstructorStats(m);
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|
||||
|
|
|
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|
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@ -293,7 +293,6 @@ TEST_CASE("Threads") {
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|||
|
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{
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py::gil_scoped_release gil_release{};
|
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REQUIRE(has_pybind11_internals_static());
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||||
|
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auto threads = std::vector<std::thread>();
|
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for (auto i = 0; i < num_threads; ++i) {
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||||
|
|
|
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|
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@ -11,6 +11,13 @@
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|||
|
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#include "pybind11_tests.h"
|
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|
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#include <string>
|
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#include <thread>
|
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|
||||
#define CROSS_MODULE(Function) \
|
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auto cm = py::module_::import("cross_module_gil_utils"); \
|
||||
auto target = reinterpret_cast<void (*)()>(PyLong_AsVoidPtr(cm.attr(Function).ptr()));
|
||||
|
||||
class VirtClass {
|
||||
public:
|
||||
virtual ~VirtClass() = default;
|
||||
|
|
@ -28,6 +35,16 @@ class PyVirtClass : public VirtClass {
|
|||
};
|
||||
|
||||
TEST_SUBMODULE(gil_scoped, m) {
|
||||
m.attr("defined_THREAD_SANITIZER") =
|
||||
#if defined(THREAD_SANITIZER)
|
||||
true;
|
||||
#else
|
||||
false;
|
||||
#endif
|
||||
|
||||
m.def("intentional_deadlock",
|
||||
[]() { std::thread([]() { py::gil_scoped_acquire gil_acquired; }).join(); });
|
||||
|
||||
py::class_<VirtClass, PyVirtClass>(m, "VirtClass")
|
||||
.def(py::init<>())
|
||||
.def("virtual_func", &VirtClass::virtual_func)
|
||||
|
|
@ -37,11 +54,91 @@ TEST_SUBMODULE(gil_scoped, m) {
|
|||
m.def("test_callback_std_func", [](const std::function<void()> &func) { func(); });
|
||||
m.def("test_callback_virtual_func", [](VirtClass &virt) { virt.virtual_func(); });
|
||||
m.def("test_callback_pure_virtual_func", [](VirtClass &virt) { virt.pure_virtual_func(); });
|
||||
m.def("test_cross_module_gil", []() {
|
||||
auto cm = py::module_::import("cross_module_gil_utils");
|
||||
auto gil_acquire = reinterpret_cast<void (*)()>(
|
||||
PyLong_AsVoidPtr(cm.attr("gil_acquire_funcaddr").ptr()));
|
||||
m.def("test_cross_module_gil_released", []() {
|
||||
CROSS_MODULE("gil_acquire_funcaddr")
|
||||
py::gil_scoped_release gil_release;
|
||||
gil_acquire();
|
||||
target();
|
||||
});
|
||||
m.def("test_cross_module_gil_acquired", []() {
|
||||
CROSS_MODULE("gil_acquire_funcaddr")
|
||||
py::gil_scoped_acquire gil_acquire;
|
||||
target();
|
||||
});
|
||||
m.def("test_cross_module_gil_inner_custom_released", []() {
|
||||
CROSS_MODULE("gil_acquire_inner_custom_funcaddr")
|
||||
py::gil_scoped_release gil_release;
|
||||
target();
|
||||
});
|
||||
m.def("test_cross_module_gil_inner_custom_acquired", []() {
|
||||
CROSS_MODULE("gil_acquire_inner_custom_funcaddr")
|
||||
py::gil_scoped_acquire gil_acquire;
|
||||
target();
|
||||
});
|
||||
m.def("test_cross_module_gil_inner_pybind11_released", []() {
|
||||
CROSS_MODULE("gil_acquire_inner_pybind11_funcaddr")
|
||||
py::gil_scoped_release gil_release;
|
||||
target();
|
||||
});
|
||||
m.def("test_cross_module_gil_inner_pybind11_acquired", []() {
|
||||
CROSS_MODULE("gil_acquire_inner_pybind11_funcaddr")
|
||||
py::gil_scoped_acquire gil_acquire;
|
||||
target();
|
||||
});
|
||||
m.def("test_cross_module_gil_nested_custom_released", []() {
|
||||
CROSS_MODULE("gil_acquire_nested_custom_funcaddr")
|
||||
py::gil_scoped_release gil_release;
|
||||
target();
|
||||
});
|
||||
m.def("test_cross_module_gil_nested_custom_acquired", []() {
|
||||
CROSS_MODULE("gil_acquire_nested_custom_funcaddr")
|
||||
py::gil_scoped_acquire gil_acquire;
|
||||
target();
|
||||
});
|
||||
m.def("test_cross_module_gil_nested_pybind11_released", []() {
|
||||
CROSS_MODULE("gil_acquire_nested_pybind11_funcaddr")
|
||||
py::gil_scoped_release gil_release;
|
||||
target();
|
||||
});
|
||||
m.def("test_cross_module_gil_nested_pybind11_acquired", []() {
|
||||
CROSS_MODULE("gil_acquire_nested_pybind11_funcaddr")
|
||||
py::gil_scoped_acquire gil_acquire;
|
||||
target();
|
||||
});
|
||||
m.def("test_release_acquire", [](const py::object &obj) {
|
||||
py::gil_scoped_release gil_released;
|
||||
py::gil_scoped_acquire gil_acquired;
|
||||
return py::str(obj);
|
||||
});
|
||||
m.def("test_nested_acquire", [](const py::object &obj) {
|
||||
py::gil_scoped_release gil_released;
|
||||
py::gil_scoped_acquire gil_acquired_outer;
|
||||
py::gil_scoped_acquire gil_acquired_inner;
|
||||
return py::str(obj);
|
||||
});
|
||||
m.def("test_multi_acquire_release_cross_module", [](unsigned bits) {
|
||||
py::set internals_ids;
|
||||
internals_ids.add(PYBIND11_INTERNALS_ID);
|
||||
{
|
||||
py::gil_scoped_release gil_released;
|
||||
auto thread_f = [bits, &internals_ids]() {
|
||||
py::gil_scoped_acquire gil_acquired;
|
||||
auto cm = py::module_::import("cross_module_gil_utils");
|
||||
auto target = reinterpret_cast<std::string (*)(unsigned)>(
|
||||
PyLong_AsVoidPtr(cm.attr("gil_multi_acquire_release_funcaddr").ptr()));
|
||||
std::string cm_internals_id = target(bits >> 3);
|
||||
internals_ids.add(cm_internals_id);
|
||||
};
|
||||
if ((bits & 0x1u) != 0u) {
|
||||
thread_f();
|
||||
}
|
||||
if ((bits & 0x2u) != 0u) {
|
||||
std::thread non_python_thread(thread_f);
|
||||
non_python_thread.join();
|
||||
}
|
||||
if ((bits & 0x4u) != 0u) {
|
||||
thread_f();
|
||||
}
|
||||
}
|
||||
return internals_ids;
|
||||
});
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,26 +1,13 @@
|
|||
import multiprocessing
|
||||
import sys
|
||||
import threading
|
||||
import time
|
||||
|
||||
import pytest
|
||||
|
||||
from pybind11_tests import gil_scoped as m
|
||||
|
||||
|
||||
def _run_in_process(target, *args, **kwargs):
|
||||
"""Runs target in process and returns its exitcode after 10s (None if still alive)."""
|
||||
process = multiprocessing.Process(target=target, args=args, kwargs=kwargs)
|
||||
process.daemon = True
|
||||
try:
|
||||
process.start()
|
||||
# Do not need to wait much, 10s should be more than enough.
|
||||
process.join(timeout=10)
|
||||
return process.exitcode
|
||||
finally:
|
||||
if process.is_alive():
|
||||
process.terminate()
|
||||
|
||||
|
||||
def _python_to_cpp_to_python():
|
||||
"""Calls different C++ functions that come back to Python."""
|
||||
|
||||
class ExtendedVirtClass(m.VirtClass):
|
||||
def virtual_func(self):
|
||||
pass
|
||||
|
|
@ -28,18 +15,185 @@ def _python_to_cpp_to_python():
|
|||
def pure_virtual_func(self):
|
||||
pass
|
||||
|
||||
extended = ExtendedVirtClass()
|
||||
|
||||
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 _python_to_cpp_to_python_from_threads(num_threads, parallel=False):
|
||||
"""Calls different C++ functions that come back to Python, from Python threads."""
|
||||
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,)
|
||||
SKIP_IF_DEADLOCK = True # See PR #4216
|
||||
|
||||
|
||||
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 SKIP_IF_DEADLOCK:
|
||||
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=_python_to_cpp_to_python)
|
||||
thread = threading.Thread(target=test_fn)
|
||||
thread.daemon = True
|
||||
thread.start()
|
||||
if parallel:
|
||||
|
|
@ -51,43 +205,40 @@ def _python_to_cpp_to_python_from_threads(num_threads, parallel=False):
|
|||
|
||||
|
||||
# TODO: FIXME, sometimes returns -11 (segfault) instead of 0 on macOS Python 3.9
|
||||
def test_python_to_cpp_to_python_from_thread():
|
||||
@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(_python_to_cpp_to_python_from_threads, 1) == 0
|
||||
assert _run_in_process(_run_in_threads, test_fn, num_threads=1, parallel=False) == 0
|
||||
|
||||
|
||||
# TODO: FIXME on macOS Python 3.9
|
||||
def test_python_to_cpp_to_python_from_thread_multiple_parallel():
|
||||
@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(_python_to_cpp_to_python_from_threads, 8, parallel=True) == 0
|
||||
assert _run_in_process(_run_in_threads, test_fn, num_threads=8, parallel=True) == 0
|
||||
|
||||
|
||||
# TODO: FIXME on macOS Python 3.9
|
||||
def test_python_to_cpp_to_python_from_thread_multiple_sequential():
|
||||
@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(_python_to_cpp_to_python_from_threads, 8, parallel=False) == 0
|
||||
)
|
||||
assert _run_in_process(_run_in_threads, test_fn, num_threads=8, parallel=False) == 0
|
||||
|
||||
|
||||
# TODO: FIXME on macOS Python 3.9
|
||||
def test_python_to_cpp_to_python_from_process():
|
||||
@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(_python_to_cpp_to_python) == 0
|
||||
|
||||
|
||||
def test_cross_module_gil():
|
||||
"""Makes sure that the GIL can be acquired by another module from a GIL-released state."""
|
||||
m.test_cross_module_gil() # Should not raise a SIGSEGV
|
||||
assert _run_in_process(test_fn) == 0
|
||||
|
|
|
|||
Loading…
Reference in New Issue