File python-cymem.spec of Package python-cymem
#
# spec file for package python-cymem
#
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%{?sle15_python_module_pythons}
Name: python-cymem
Version: 2.0.11
Release: 0
Summary: Manage calls to calloc/free through Cython
License: MIT
URL: https://github.com/explosion/cymem
Source: https://files.pythonhosted.org/packages/source/c/cymem/cymem-%{version}.tar.gz
BuildRequires: %{python_module Cython3}
BuildRequires: %{python_module pip}
BuildRequires: %{python_module pytest}
BuildRequires: %{python_module setuptools}
BuildRequires: %{python_module wheel}
BuildRequires: fdupes
BuildRequires: gcc-c++
BuildRequires: python-rpm-macros
%python_subpackages
%description
# cymem: A Cython Memory Helper
cymem provides two small memory-management helpers for Cython. They make it
easy to tie memory to a Python object's life-cycle, so that the memory is freed
when the object is garbage collected.
## Overview
The most useful is `cymem.Pool`, which acts as a thin wrapper around the calloc
function:
```python
from cymem.cymem cimport Pool
cdef Pool mem = Pool()
data1 = <int*>mem.alloc(10, sizeof(int))
data2 = <float*>mem.alloc(12, sizeof(float))
```
The `Pool` object saves the memory addresses internally, and frees them when the
object is garbage collected. Typically you'll attach the `Pool` to some cdef'd
class. This is particularly handy for deeply nested structs, which have
complicated initialization functions. Just pass the `Pool` object into the
initializer, and you don't have to worry about freeing your struct at all —
all of the calls to `Pool.alloc` will be automatically freed when the `Pool`
expires.
%prep
%autosetup -p1 -n cymem-%{version}
%build
%pyproject_wheel
%install
%pyproject_install
%python_expand %fdupes %{buildroot}%{$python_sitearch}
%check
# Avoid the topdir, which means we can't import cymem.cymem
tmpdir=$(mktemp -d)
cp cymem/tests/* $tmpdir
pushd $tmpdir
%pytest_arch
popd
rm -r $tmpdir
%files %{python_files}
%doc README.md
%license LICENSE
%{python_sitearch}/cymem
%{python_sitearch}/cymem-%{version}.dist-info
%changelog