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fix regression reported by @cyfdecyf in #1454 (#1517)

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This commit is contained in:
Wenzel Jakob 2018-09-11 09:32:45 +02:00
parent c07c0c741c
commit d3b4777cea
3 changed files with 53 additions and 13 deletions
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32
include/pybind11/detail/internals.h
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@ -21,20 +21,28 @@ inline PyObject *make_object_base_type(PyTypeObject *metaclass);
// The old Python Thread Local Storage (TLS) API is deprecated in Python 3.7 in favor of the new
// Thread Specific Storage (TSS) API.
#if PY_VERSION_HEX >= 0x03070000
#define PYBIND11_TLS_KEY_INIT(var) Py_tss_t *var = nullptr
#define PYBIND11_TLS_GET_VALUE(key) PyThread_tss_get((key))
#define PYBIND11_TLS_REPLACE_VALUE(key, value) PyThread_tss_set((key), (tstate))
#define PYBIND11_TLS_DELETE_VALUE(key) PyThread_tss_set((key), nullptr)
# define PYBIND11_TLS_KEY_INIT(var) Py_tss_t *var = nullptr
# define PYBIND11_TLS_GET_VALUE(key) PyThread_tss_get((key))
# define PYBIND11_TLS_REPLACE_VALUE(key, value) PyThread_tss_set((key), (tstate))
# define PYBIND11_TLS_DELETE_VALUE(key) PyThread_tss_set((key), nullptr)
#else
// Usually an int but a long on Cygwin64 with Python 3.x
#define PYBIND11_TLS_KEY_INIT(var) decltype(PyThread_create_key()) var = 0
#define PYBIND11_TLS_GET_VALUE(key) PyThread_get_key_value((key))
#if PY_MAJOR_VERSION < 3
#define PYBIND11_TLS_REPLACE_VALUE(key, value) do { PyThread_delete_key_value((key)); PyThread_set_key_value((key), (value)); } while (false)
#else
#define PYBIND11_TLS_REPLACE_VALUE(key, value) PyThread_set_key_value((key), (value))
#endif
#define PYBIND11_TLS_DELETE_VALUE(key) PyThread_set_key_value((key), nullptr)
# define PYBIND11_TLS_KEY_INIT(var) decltype(PyThread_create_key()) var = 0
# define PYBIND11_TLS_GET_VALUE(key) PyThread_get_key_value((key))
# if PY_MAJOR_VERSION < 3
# define PYBIND11_TLS_DELETE_VALUE(key) \
PyThread_delete_key_value(key)
# define PYBIND11_TLS_REPLACE_VALUE(key, value) \
do { \
PyThread_delete_key_value((key)); \
PyThread_set_key_value((key), (value)); \
} while (false)
# else
# define PYBIND11_TLS_DELETE_VALUE(key) \
PyThread_set_key_value((key), nullptr)
# define PYBIND11_TLS_REPLACE_VALUE(key, value) \
PyThread_set_key_value((key), (value))
# endif
#endif
// Python loads modules by default with dlopen with the RTLD_LOCAL flag; under libc++ and possibly

28
tests/test_virtual_functions.cpp
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@ -10,6 +10,7 @@
#include "pybind11_tests.h"
#include "constructor_stats.h"
#include <pybind11/functional.h>
#include <thread>
/* This is an example class that we'll want to be able to extend from Python */
class ExampleVirt {
@ -157,6 +158,28 @@ struct DispatchIssue : Base {
}
};
static void test_gil() {
{
py::gil_scoped_acquire lock;
py::print("1st lock acquired");
}
{
py::gil_scoped_acquire lock;
py::print("2nd lock acquired");
}
}
static void test_gil_from_thread() {
py::gil_scoped_release release;
std::thread t(test_gil);
t.join();
}
// Forward declaration (so that we can put the main tests here; the inherited virtual approaches are
// rather long).
void initialize_inherited_virtuals(py::module &m);
@ -414,7 +437,6 @@ public:
};
*/
void initialize_inherited_virtuals(py::module &m) {
// test_inherited_virtuals
@ -447,4 +469,8 @@ void initialize_inherited_virtuals(py::module &m) {
py::class_<D_Tpl, C_Tpl, PyB_Tpl<D_Tpl>>(m, "D_Tpl")
.def(py::init<>());
// Fix issue #1454 (crash when acquiring/releasing GIL on another thread in Python 2.7)
m.def("test_gil", &test_gil);
m.def("test_gil_from_thread", &test_gil_from_thread);
};

6
tests/test_virtual_functions.py
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@ -369,3 +369,9 @@ def test_inherited_virtuals():
assert obj.unlucky_number() == -7
assert obj.lucky_number() == -1.375
assert obj.say_everything() == "BT -7"
def test_issue_1454():
# Fix issue #1454 (crash when acquiring/releasing GIL on another thread in Python 2.7)
m.test_gil()
m.test_gil_from_thread()