# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import os import six import sys import textwrap import copy import re import setuptools from setuptools.command.easy_install import easy_install from setuptools.command.build_ext import build_ext from .extension_utils import find_cuda_home, normalize_extension_kwargs, add_compile_flag, bootstrap_context from .extension_utils import is_cuda_file, prepare_unix_cflags, prepare_win_cflags, add_std_without_repeat, get_build_directory from .extension_utils import _import_module_from_library, CustomOpInfo, _write_setup_file, _jit_compile, parse_op_name_from from .extension_utils import check_abi_compatibility, log_v, IS_WINDOWS, OS_NAME from .extension_utils import use_new_custom_op_load_method, MSVC_COMPILE_FLAGS # Note(zhouwei): On windows, it will export function 'PyInit_[name]' by default, # The solution is: 1.User add function PyInit_[name] 2. set not to export # refer to https://stackoverflow.com/questions/34689210/error-exporting-symbol-when-building-python-c-extension-in-windows if IS_WINDOWS and six.PY3: from distutils.command.build_ext import build_ext as _du_build_ext from unittest.mock import Mock _du_build_ext.get_export_symbols = Mock(return_value=None) CUDA_HOME = find_cuda_home() def setup(**attr): """ Wrapper setuptools.setup function to valid `build_ext` command and implement paddle api code injection by switching `write_stub` function in bdist_egg with `custom_write_stub`. Its usage is almost same as `setuptools.setup` except for `ext_modules` arguments. For compiling multi custom operators, all necessary source files can be include into just one Extension (CppExtension/CUDAExtension). Moreover, only one `name` argument is required in `setup` and no need to spcific `name` in Extension. Example: >> from paddle.utils.cpp_extension import CUDAExtension, setup >> setup(name='custom_module', ext_modules=CUDAExtension( sources=['relu_op.cc', 'relu_op.cu'], include_dirs=[], # specific user-defined include dirs extra_compile_args=[]) # specific user-defined compil arguments. """ cmdclass = attr.get('cmdclass', {}) assert isinstance(cmdclass, dict) # if not specific cmdclass in setup, add it automaticaly. if 'build_ext' not in cmdclass: cmdclass['build_ext'] = BuildExtension.with_options( no_python_abi_suffix=True) attr['cmdclass'] = cmdclass error_msg = """ Required to specific `name` argument in paddle.utils.cpp_extension.setup. It's used as `import XXX` when you want install and import your custom operators.\n For Example: # setup.py file from paddle.utils.cpp_extension import CUDAExtension, setup setup(name='custom_module', ext_modules=CUDAExtension( sources=['relu_op.cc', 'relu_op.cu']) # After running `python setup.py install` from custom_module import relue """ # name argument is required if 'name' not in attr: raise ValueError(error_msg) ext_modules = attr.get('ext_modules', []) if not isinstance(ext_modules, list): ext_modules = [ext_modules] assert len( ext_modules ) == 1, "Required only one Extension, but received {}. If you want to compile multi operators, you can include all necessary source files in one Extenion.".format( len(ext_modules)) # replace Extension.name with attr['name] to keep consistant with Package name. for ext_module in ext_modules: ext_module.name = attr['name'] attr['ext_modules'] = ext_modules # Add rename .so hook in easy_install assert 'easy_install' not in cmdclass cmdclass['easy_install'] = EasyInstallCommand # Always set zip_safe=False to make compatible in PY2 and PY3 # See http://peak.telecommunity.com/DevCenter/setuptools#setting-the-zip-safe-flag attr['zip_safe'] = False # switch `write_stub` to inject paddle api in .egg with bootstrap_context(): setuptools.setup(**attr) def CppExtension(sources, *args, **kwargs): """ Returns setuptools.CppExtension instance for setup.py to make it easy to specify compile flags while building C++ custommed op kernel. Args: sources(list[str]): The C++/CUDA source file names args(list[options]): list of config options used to compile shared library kwargs(dict[option]): dict of config options used to compile shared library Returns: Extension: An instance of setuptools.Extension """ kwargs = normalize_extension_kwargs(kwargs, use_cuda=False) # Note(Aurelius84): While using `setup` and `jit`, the Extension `name` will # be replaced as `setup.name` to keep consistant with package. Because we allow # users can not specific name in Extension. # See `paddle.utils.cpp_extension.setup` for details. name = kwargs.get('name', None) if name is None: name = _generate_extension_name(sources) return setuptools.Extension(name, sources, *args, **kwargs) def CUDAExtension(sources, *args, **kwargs): """ Returns setuptools.CppExtension instance for setup.py to make it easy to specify compile flags while build CUDA custommed op kernel. Args: sources(list[str]): The C++/CUDA source file names args(list[options]): list of config options used to compile shared library kwargs(dict[option]): dict of config options used to compile shared library Returns: Extension: An instance of setuptools.Extension """ kwargs = normalize_extension_kwargs(kwargs, use_cuda=True) # Note(Aurelius84): While using `setup` and `jit`, the Extension `name` will # be replaced as `setup.name` to keep consistant with package. Because we allow # users can not specific name in Extension. # See `paddle.utils.cpp_extension.setup` for details. name = kwargs.get('name', None) if name is None: name = _generate_extension_name(sources) return setuptools.Extension(name, sources, *args, **kwargs) def _generate_extension_name(sources): """ Generate extension name by source files. """ assert len(sources) > 0, "source files is empty" file_prefix = [] for source in sources: source = os.path.basename(source) filename, _ = os.path.splitext(source) # Use list to generate same order. if filename not in file_prefix: file_prefix.append(filename) return '_'.join(file_prefix) class BuildExtension(build_ext, object): """ Inherited from setuptools.command.build_ext to customize how to apply compilation process with share library. """ @classmethod def with_options(cls, **options): """ Returns a BuildExtension subclass containing use-defined options. """ class cls_with_options(cls): def __init__(self, *args, **kwargs): kwargs.update(options) cls.__init__(self, *args, **kwargs) return cls_with_options def __init__(self, *args, **kwargs): """ Attributes is initialized with following oreder: 1. super(self).__init__() 2. initialize_options(self) 3. the reset of current __init__() 4. finalize_options(self) So, it is recommended to set attribute value in `finalize_options`. """ super(BuildExtension, self).__init__(*args, **kwargs) self.no_python_abi_suffix = kwargs.get("no_python_abi_suffix", True) self.output_dir = kwargs.get("output_dir", None) # for compatible two custom op define method use_new_custom_op_load_method( kwargs.get("use_new_method", use_new_custom_op_load_method())) def initialize_options(self): super(BuildExtension, self).initialize_options() def finalize_options(self): super(BuildExtension, self).finalize_options() # NOTE(Aurelius84): Set location of compiled shared library. # Carefully to modify this because `setup.py build/install` # and `load` interface rely on this attribute. if self.output_dir is not None: self.build_lib = self.output_dir def build_extensions(self): self._check_abi() for extension in self.extensions: # check settings of compiler if isinstance(extension.extra_compile_args, dict): for compiler in ['cxx', 'nvcc']: if compiler not in extension.extra_compile_args: extension.extra_compile_args[compiler] = [] # Consider .cu, .cu.cc as valid source extensions. self.compiler.src_extensions += ['.cu', '.cu.cc'] # Save the original _compile method for later. if self.compiler.compiler_type == 'msvc': self.compiler._cpp_extensions += ['.cu', '.cuh'] original_compile = self.compiler.compile original_spawn = self.compiler.spawn else: # add determine compile flags add_compile_flag(extension, '-std=c++11') original_compile = self.compiler._compile def unix_custom_single_compiler(obj, src, ext, cc_args, extra_postargs, pp_opts): """ Monkey patch machanism to replace inner compiler to custom complie process on Unix platform. """ # use abspath to ensure no warning and don't remove deecopy because modify params # with dict type is dangerous. src = os.path.abspath(src) cflags = copy.deepcopy(extra_postargs) try: original_compiler = self.compiler.compiler_so # ncvv compile CUDA source if is_cuda_file(src): assert CUDA_HOME is not None nvcc_cmd = os.path.join(CUDA_HOME, 'bin', 'nvcc') self.compiler.set_executable('compiler_so', nvcc_cmd) # {'nvcc': {}, 'cxx: {}} if isinstance(cflags, dict): cflags = cflags['nvcc'] else: cflags = prepare_unix_cflags(cflags) # cxx compile Cpp source elif isinstance(cflags, dict): cflags = cflags['cxx'] add_std_without_repeat( cflags, self.compiler.compiler_type, use_std14=False) original_compile(obj, src, ext, cc_args, cflags, pp_opts) finally: # restore original_compiler self.compiler.compiler_so = original_compiler def win_custom_single_compiler(sources, output_dir=None, macros=None, include_dirs=None, debug=0, extra_preargs=None, extra_postargs=None, depends=None): self.cflags = copy.deepcopy(extra_postargs) extra_postargs = None def win_custom_spawn(cmd): # Using regex to modify compile options compile_options = self.compiler.compile_options for i in range(len(cmd)): if re.search('/MD', cmd[i]) is not None: cmd[i] = '/MT' if re.search('/W[1-4]', cmd[i]) is not None: cmd[i] = '/W0' # Using regex to match src, obj and include files src_regex = re.compile('/T(p|c)(.*)') src_list = [ m.group(2) for m in (src_regex.match(elem) for elem in cmd) if m ] obj_regex = re.compile('/Fo(.*)') obj_list = [ m.group(1) for m in (obj_regex.match(elem) for elem in cmd) if m ] include_regex = re.compile(r'((\-|\/)I.*)') include_list = [ m.group(1) for m in (include_regex.match(elem) for elem in cmd) if m ] assert len(src_list) == 1 and len(obj_list) == 1 src = src_list[0] obj = obj_list[0] if is_cuda_file(src): assert CUDA_HOME is not None nvcc_cmd = os.path.join(CUDA_HOME, 'bin', 'nvcc') if isinstance(self.cflags, dict): cflags = self.cflags['nvcc'] elif isinstance(self.cflags, list): cflags = self.cflags else: cflags = [] cflags = prepare_win_cflags(cflags) + ['--use-local-env'] for flag in MSVC_COMPILE_FLAGS: cflags = ['-Xcompiler', flag] + cflags cmd = [nvcc_cmd, '-c', src, '-o', obj ] + include_list + cflags elif isinstance(self.cflags, dict): cflags = MSVC_COMPILE_FLAGS + self.cflags['cxx'] cmd += cflags elif isinstance(self.cflags, list): cflags = MSVC_COMPILE_FLAGS + self.cflags cmd += cflags return original_spawn(cmd) try: self.compiler.spawn = win_custom_spawn return original_compile(sources, output_dir, macros, include_dirs, debug, extra_preargs, extra_postargs, depends) finally: self.compiler.spawn = original_spawn def object_filenames_with_cuda(origina_func, build_directory): """ Decorated the function to add customized naming machanism. Originally, both .cc/.cu will have .o object output that will bring file override problem. Use .cu.o as CUDA object suffix. """ def wrapper(source_filenames, strip_dir=0, output_dir=''): try: objects = origina_func(source_filenames, strip_dir, output_dir) for i, source in enumerate(source_filenames): # modify xx.o -> xx.cu.o/xx.cu.obj if is_cuda_file(source): old_obj = objects[i] if self.compiler.compiler_type == 'msvc': objects[i] = old_obj[:-3] + 'cu.obj' else: objects[i] = old_obj[:-1] + 'cu.o' # if user set build_directory, output objects there. if build_directory is not None: objects = [ os.path.join(build_directory, os.path.basename(obj)) for obj in objects ] # ensure to use abspath objects = [os.path.abspath(obj) for obj in objects] finally: self.compiler.object_filenames = origina_func return objects return wrapper # customized compile process if self.compiler.compiler_type == 'msvc': self.compiler.compile = win_custom_single_compiler else: self.compiler._compile = unix_custom_single_compiler self.compiler.object_filenames = object_filenames_with_cuda( self.compiler.object_filenames, self.build_lib) self._record_op_info() print("Compiling user custom op, it will cost a few seconds.....") build_ext.build_extensions(self) def get_ext_filename(self, fullname): # for example: custommed_extension.cpython-37m-x86_64-linux-gnu.so ext_name = super(BuildExtension, self).get_ext_filename(fullname) if self.no_python_abi_suffix and six.PY3: split_str = '.' name_items = ext_name.split(split_str) assert len( name_items ) > 2, "Expected len(name_items) > 2, but received {}".format( len(name_items)) name_items.pop(-2) # custommed_extension.so ext_name = split_str.join(name_items) return ext_name def _check_abi(self): """ Check ABI Compatibility. """ if hasattr(self.compiler, 'compiler_cxx'): compiler = self.compiler.compiler_cxx[0] elif IS_WINDOWS: compiler = os.environ.get('CXX', 'cl') else: compiler = os.environ.get('CXX', 'c++') check_abi_compatibility(compiler) # Warn user if VC env is activated but `DISTUILS_USE_SDK` is not set. if IS_WINDOWS and 'VSCMD_ARG_TGT_ARCH' in os.environ and 'DISTUTILS_USE_SDK' not in os.environ: msg = ( 'It seems that the VC environment is activated but DISTUTILS_USE_SDK is not set.' 'This may lead to multiple activations of the VC env.' 'Please set `DISTUTILS_USE_SDK=1` and try again.') raise UserWarning(msg) def _record_op_info(self): """ Record custum op inforomation. """ # parse shared library abs path outputs = self.get_outputs() assert len(outputs) == 1 # multi operators built into same one .so file so_path = os.path.abspath(outputs[0]) so_name = os.path.basename(so_path) for i, extension in enumerate(self.extensions): sources = [os.path.abspath(s) for s in extension.sources] op_names = parse_op_name_from(sources) for op_name in op_names: CustomOpInfo.instance().add(op_name, so_name=so_name, so_path=so_path) class EasyInstallCommand(easy_install, object): """ Extend easy_intall Command to control the behavior of naming shared library file. NOTE(Aurelius84): This is a hook subclass inherited Command used to rename shared library file after extracting egg-info into site-packages. """ def __init__(self, *args, **kwargs): super(EasyInstallCommand, self).__init__(*args, **kwargs) # NOTE(Aurelius84): Add args and kwargs to make compatible with PY2/PY3 def run(self, *args, **kwargs): super(EasyInstallCommand, self).run(*args, **kwargs) # NOTE: To avoid failing import .so file instead of # python file because they have same name, we rename # .so shared library to another name. for egg_file in self.outputs: filename, ext = os.path.splitext(egg_file) will_rename = False if OS_NAME.startswith('linux') and ext == '.so': will_rename = True elif IS_WINDOWS and ext == '.pyd': will_rename = True if will_rename: new_so_path = filename + "_pd_" + ext if not os.path.exists(new_so_path): os.rename(r'%s' % egg_file, r'%s' % new_so_path) assert os.path.exists(new_so_path) def load(name, sources, extra_cflags=None, extra_cuda_cflags=None, extra_ldflags=None, extra_include_paths=None, build_directory=None, interpreter=None, verbose=False): """ An Interface to automatically compile C++/CUDA source files Just-In-Time and return callable python function as other Paddle layers API. It will append user defined custom op in background. This module will perform compiling, linking, api generation and module loading processes for users. It does not require CMake or Ninja environment and only g++/nvcc on Linux and clang++ on MacOS. Moreover, ABI compatibility will be checked to ensure that compiler version on local machine is compatible with pre-installed Paddle whl in python site-packages. For example if Paddle is built with GCC5.4, the version of user's local machine should satisfy GCC >= 5.4. Otherwise, a fatal error will occur because ABI compatibility. Args: name(str): generated shared library file name. sources(list[str]): custom op source files name with .cc/.cu suffix. extra_cflag(list[str]): additional flags used to compile CPP files. By default all basic and framework related flags have been included. If your pre-insall Paddle supported MKLDNN, please add '-DPADDLE_WITH_MKLDNN'. Default None. extra_cuda_cflags(list[str]): additonal flags used to compile CUDA files. See https://docs.nvidia.com/cuda/cuda-compiler-driver-nvcc/index.html for details. Default None. extra_ldflags(list[str]): additonal flags used to link shared library. See https://gcc.gnu.org/onlinedocs/gcc/Link-Options.html for details. Default None. extra_include_paths(list[str]): additional include path used to search header files. Default None. build_directory(str): specific directory path to put shared library file. If set None, it will use `PADDLE_EXTENSION_DIR` from os.environ. Use `paddle.utils.cpp_extension.get_build_directory()` to see the location. interpreter(str): alias or full interpreter path to specific which one to use if have installed multiple. If set None, will use `python` as default interpreter. verbose(bool): whether to verbose compiled log information Returns: custom api: A callable python function with same signature as CustomOp Kernel defination. Example: >> from paddle.utils.cpp_extension import load >> relu2 = load(name='relu2', sources=['relu_op.cc', 'relu_op.cu']) >> x = paddle.rand([4, 10]], dtype='float32') >> out = relu2(x) """ if build_directory is None: build_directory = get_build_directory(verbose) # ensure to use abs path build_directory = os.path.abspath(build_directory) # Will load shared library from 'path' on windows if IS_WINDOWS: os.environ['path'] = build_directory + ';' + os.environ['path'] log_v("build_directory: {}".format(build_directory), verbose) file_path = os.path.join(build_directory, "{}_setup.py".format(name)) sources = [os.path.abspath(source) for source in sources] # TODO(Aurelius84): split cflags and cuda_flags if extra_cflags is None: extra_cflags = [] if extra_cuda_cflags is None: extra_cuda_cflags = [] compile_flags = extra_cflags + extra_cuda_cflags log_v("additonal compile_flags: [{}]".format(' '.join(compile_flags)), verbose) # write setup.py file and compile it _write_setup_file(name, sources, file_path, extra_include_paths, compile_flags, extra_ldflags, verbose) _jit_compile(file_path, interpreter, verbose) # import as callable python api custom_op_api = _import_module_from_library(name, build_directory, verbose) return custom_op_api