##// END OF EJS Templates
phases: avoid N² behavior in `advanceboundary`...
phases: avoid N² behavior in `advanceboundary` We allowed duplicated entries in the deque, which each entry could potentially insert all its ancestors. So advancing boundary for the full repository would mean each revision would walk all its ancestors, resulting in O(N²) iteration. For repository of any decent size, N² is quickly insane. We introduce a simple set to avoid this and get back to reasonable performance.

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setup.py
119 lines | 3.3 KiB | text/x-python | PythonLexer
#!/usr/bin/env python
# Copyright (c) 2016-present, Gregory Szorc
# All rights reserved.
#
# This software may be modified and distributed under the terms
# of the BSD license. See the LICENSE file for details.
from distutils.version import LooseVersion
import os
import sys
from setuptools import setup
# Need change in 1.10 for ffi.from_buffer() to handle all buffer types
# (like memoryview).
# Need feature in 1.11 for ffi.gc() to declare size of objects so we avoid
# garbage collection pitfalls.
MINIMUM_CFFI_VERSION = "1.11"
try:
import cffi
# PyPy (and possibly other distros) have CFFI distributed as part of
# them. The install_requires for CFFI below won't work. We need to sniff
# out the CFFI version here and reject CFFI if it is too old.
cffi_version = LooseVersion(cffi.__version__)
if cffi_version < LooseVersion(MINIMUM_CFFI_VERSION):
print(
"CFFI 1.11 or newer required (%s found); "
"not building CFFI backend" % cffi_version,
file=sys.stderr,
)
cffi = None
except ImportError:
cffi = None
import setup_zstd
SUPPORT_LEGACY = False
SYSTEM_ZSTD = False
WARNINGS_AS_ERRORS = False
if os.environ.get("ZSTD_WARNINGS_AS_ERRORS", ""):
WARNINGS_AS_ERRORS = True
if "--legacy" in sys.argv:
SUPPORT_LEGACY = True
sys.argv.remove("--legacy")
if "--system-zstd" in sys.argv:
SYSTEM_ZSTD = True
sys.argv.remove("--system-zstd")
if "--warnings-as-errors" in sys.argv:
WARNINGS_AS_ERRORS = True
sys.argv.remove("--warning-as-errors")
# Code for obtaining the Extension instance is in its own module to
# facilitate reuse in other projects.
extensions = [
setup_zstd.get_c_extension(
name="zstd",
support_legacy=SUPPORT_LEGACY,
system_zstd=SYSTEM_ZSTD,
warnings_as_errors=WARNINGS_AS_ERRORS,
),
]
install_requires = []
if cffi:
import make_cffi
extensions.append(make_cffi.ffi.distutils_extension())
install_requires.append("cffi>=%s" % MINIMUM_CFFI_VERSION)
version = None
with open("c-ext/python-zstandard.h", "r") as fh:
for line in fh:
if not line.startswith("#define PYTHON_ZSTANDARD_VERSION"):
continue
version = line.split()[2][1:-1]
break
if not version:
raise Exception(
"could not resolve package version; " "this should never happen"
)
setup(
name="zstandard",
version=version,
description="Zstandard bindings for Python",
long_description=open("README.rst", "r").read(),
url="https://github.com/indygreg/python-zstandard",
author="Gregory Szorc",
author_email="gregory.szorc@gmail.com",
license="BSD",
classifiers=[
"Development Status :: 4 - Beta",
"Intended Audience :: Developers",
"License :: OSI Approved :: BSD License",
"Programming Language :: C",
"Programming Language :: Python :: 2.7",
"Programming Language :: Python :: 3.5",
"Programming Language :: Python :: 3.6",
"Programming Language :: Python :: 3.7",
"Programming Language :: Python :: 3.8",
],
keywords="zstandard zstd compression",
packages=["zstandard"],
ext_modules=extensions,
test_suite="tests",
install_requires=install_requires,
tests_require=["hypothesis"],
)