Init commit

Author: cmpute

.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintainted in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+
+*/_skbuild

.vscode/settings.json

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+{
+    "files.associations": {
+        "cctype": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cstring": "cpp",
+        "ctime": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "array": "cpp",
+        "atomic": "cpp",
+        "strstream": "cpp",
+        "bit": "cpp",
+        "*.tcc": "cpp",
+        "chrono": "cpp",
+        "cstdint": "cpp",
+        "deque": "cpp",
+        "forward_list": "cpp",
+        "map": "cpp",
+        "unordered_map": "cpp",
+        "unordered_set": "cpp",
+        "vector": "cpp",
+        "exception": "cpp",
+        "algorithm": "cpp",
+        "functional": "cpp",
+        "iterator": "cpp",
+        "memory": "cpp",
+        "memory_resource": "cpp",
+        "numeric": "cpp",
+        "optional": "cpp",
+        "random": "cpp",
+        "ratio": "cpp",
+        "string": "cpp",
+        "string_view": "cpp",
+        "system_error": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "utility": "cpp",
+        "fstream": "cpp",
+        "initializer_list": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "limits": "cpp",
+        "new": "cpp",
+        "ostream": "cpp",
+        "sstream": "cpp",
+        "stdexcept": "cpp",
+        "streambuf": "cpp",
+        "thread": "cpp",
+        "cinttypes": "cpp",
+        "typeindex": "cpp",
+        "typeinfo": "cpp"
+    }
+}

README.md

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+# Python C++ bindings benchmark
+
+This repo contains benchmark for the performance of the C++ bindings including Cython, Pybind11, etc. The build process is handled by scikit-build.
+
+To build and run the benchmark:
+```sh
+python build.py
+python test.py
+```

build.py

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+import shutil, subprocess
+from pathlib import Path
+
+root = Path(__file__).resolve().parent
+
+subprocess.check_call(['python', 'setup.py', 'build_ext', '--inplace'], cwd="cython-base")
+subprocess.check_call(['python', 'setup.py', 'build_ext', '--inplace'], cwd="cython-derived")
+subprocess.check_call(['python', 'setup.py', 'build_ext', '--inplace'], cwd="pybind11-base")
+subprocess.check_call(['python', 'setup.py', 'build_ext', '--inplace'], cwd="pybind11-derived")
+
+for f in root.glob("*/_skbuild/*/cmake-install/*"):
+    shutil.copy2(f, root / f.name)
+
+print(">> build finished.")

cython-base/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.12)
+
+project(cython_base)
+
+find_package(PythonExtensions REQUIRED)
+find_package(Cython REQUIRED)
+find_package(NumPy REQUIRED)
+include_directories(${NumPy_INCLUDE_DIRS})
+
+get_filename_component(main_dir ${CMAKE_CURRENT_SOURCE_DIR} DIRECTORY)
+include_directories(${main_dir})
+
+add_cython_target(cython_base CXX)
+add_library(cython_base MODULE ${cython_base})
+python_extension_module(cython_base)
+install(TARGETS cython_base LIBRARY DESTINATION .)

cython-base/cython_base.pxd

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+from libcpp.vector cimport vector
+
+cdef extern from "impl.hpp":
+    cdef cppclass SortedVector:
+        SortedVector(const vector[float] &)
+    cdef float csum "sum" (const SortedVector&)
+
+cdef class CySortedVector: # wrapped sorted vector
+    cdef SortedVector *_ptr

cython-base/cython_base.pyx

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+from cython.operator cimport dereference as deref
+
+cdef class CySortedVector:
+    def __cinit__(self, data=None):
+        cdef vector[float] cdata
+
+        if type(self) is CySortedVector:
+            if data is not None:
+                cdata = data
+            self._ptr = new SortedVector(cdata)
+
+    def __dealloc__(self):
+        if type(self) is CySortedVector:
+            del self._ptr
+
+def sum(CySortedVector vec):
+    return csum(deref(vec._ptr))

cython-base/setup.py

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+from skbuild import setup
+
+setup(
+    name="cython-base",
+    version="0.0.1",
+    packages=['cython_base'],
+)

cython-derived/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.12)
+
+project(cython_derived)
+
+find_package(PythonExtensions REQUIRED)
+find_package(Cython REQUIRED)
+find_package(NumPy REQUIRED)
+include_directories(${NumPy_INCLUDE_DIRS})
+
+get_filename_component(main_dir ${CMAKE_CURRENT_SOURCE_DIR} DIRECTORY)
+include_directories(${main_dir})
+include_directories(${main_dir}/cython-base) # for cython header
+
+add_cython_target(cython_derived CXX)
+add_library(cython_derived MODULE ${cython_derived})
+python_extension_module(cython_derived)
+install(TARGETS cython_derived LIBRARY DESTINATION .)

cython-derived/cython_derived.pxd

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+from libcpp.vector cimport vector
+from cython_base cimport SortedVector, CySortedVector
+
+cdef extern from "impl.hpp":
+    cdef cppclass AccumulatedVector(SortedVector):
+        AccumulatedVector(const vector[float] &)
+    cdef float csum "sum" (const AccumulatedVector&)
+
+cdef class CyAccumulatedVector(CySortedVector):
+    pass