mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-25 14:45:12 +00:00
1ac19036d6
```c++
m.def("foo", foo, py::call_guard<T>());
```
is equivalent to:
```c++
m.def("foo", [](args...) {
T scope_guard;
return foo(args...); // forwarded arguments
});
```
112 lines
2.7 KiB
Python
112 lines
2.7 KiB
Python
import pytest
|
|
|
|
|
|
def test_keep_alive_argument(capture):
|
|
from pybind11_tests import Parent, Child
|
|
|
|
with capture:
|
|
p = Parent()
|
|
assert capture == "Allocating parent."
|
|
with capture:
|
|
p.addChild(Child())
|
|
pytest.gc_collect()
|
|
assert capture == """
|
|
Allocating child.
|
|
Releasing child.
|
|
"""
|
|
with capture:
|
|
del p
|
|
pytest.gc_collect()
|
|
assert capture == "Releasing parent."
|
|
|
|
with capture:
|
|
p = Parent()
|
|
assert capture == "Allocating parent."
|
|
with capture:
|
|
p.addChildKeepAlive(Child())
|
|
pytest.gc_collect()
|
|
assert capture == "Allocating child."
|
|
with capture:
|
|
del p
|
|
pytest.gc_collect()
|
|
assert capture == """
|
|
Releasing parent.
|
|
Releasing child.
|
|
"""
|
|
|
|
|
|
def test_keep_alive_return_value(capture):
|
|
from pybind11_tests import Parent
|
|
|
|
with capture:
|
|
p = Parent()
|
|
assert capture == "Allocating parent."
|
|
with capture:
|
|
p.returnChild()
|
|
pytest.gc_collect()
|
|
assert capture == """
|
|
Allocating child.
|
|
Releasing child.
|
|
"""
|
|
with capture:
|
|
del p
|
|
pytest.gc_collect()
|
|
assert capture == "Releasing parent."
|
|
|
|
with capture:
|
|
p = Parent()
|
|
assert capture == "Allocating parent."
|
|
with capture:
|
|
p.returnChildKeepAlive()
|
|
pytest.gc_collect()
|
|
assert capture == "Allocating child."
|
|
with capture:
|
|
del p
|
|
pytest.gc_collect()
|
|
assert capture == """
|
|
Releasing parent.
|
|
Releasing child.
|
|
"""
|
|
|
|
|
|
def test_return_none(capture):
|
|
from pybind11_tests import Parent
|
|
|
|
with capture:
|
|
p = Parent()
|
|
assert capture == "Allocating parent."
|
|
with capture:
|
|
p.returnNullChildKeepAliveChild()
|
|
pytest.gc_collect()
|
|
assert capture == ""
|
|
with capture:
|
|
del p
|
|
pytest.gc_collect()
|
|
assert capture == "Releasing parent."
|
|
|
|
with capture:
|
|
p = Parent()
|
|
assert capture == "Allocating parent."
|
|
with capture:
|
|
p.returnNullChildKeepAliveParent()
|
|
pytest.gc_collect()
|
|
assert capture == ""
|
|
with capture:
|
|
del p
|
|
pytest.gc_collect()
|
|
assert capture == "Releasing parent."
|
|
|
|
|
|
def test_call_guard():
|
|
from pybind11_tests import call_policies
|
|
|
|
assert call_policies.unguarded_call() == "unguarded"
|
|
assert call_policies.guarded_call() == "guarded"
|
|
|
|
assert call_policies.multiple_guards_correct_order() == "guarded & guarded"
|
|
assert call_policies.multiple_guards_wrong_order() == "unguarded & guarded"
|
|
|
|
if hasattr(call_policies, "with_gil"):
|
|
assert call_policies.with_gil() == "GIL held"
|
|
assert call_policies.without_gil() == "GIL released"
|