matx.runtime.module 源代码

# Copyright 2022 ByteDance Ltd. and/or its affiliates.
#
# Acknowledgement: The structure of the Module is inspired by incubator-tvm.
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#   http://www.apache.org/licenses/LICENSE-2.0
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# pylint: disable=invalid-name, unused-import, import-outside-toplevel
"""Runtime Module namespace."""
import ctypes

from .._ffi.base import _LIB, check_call, c_str, string_types, _RUNTIME_ONLY
from .._ffi.libinfo import find_include_path
from .._ffi._selector import _set_class_module
from .packed_func import PackedFunc, PackedFuncHandle

from . import _ffi_api


[文档]class Module(object): """Runtime Module.""" __slots__ = ["handle"]
[文档] def __init__(self, handle): self.handle = handle
def __del__(self): handle = self.handle if not isinstance(handle, ctypes.c_void_p): handle = ctypes.c_void_p(handle) check_call(_LIB.MATXScriptModFree(handle)) def __hash__(self): if isinstance(self.handle, ctypes.c_void_p): return ctypes.cast(self.handle, ctypes.c_void_p).value else: return self.handle
[文档] def get_function(self, name, query_imports=False): """Get function from the module. Parameters ---------- name : str The name of the function query_imports : bool Whether also query modules imported by this module. Returns ------- f : matx.runtime.PackedFunc The result function. """ ret_handle = PackedFuncHandle() handle = self.handle if not isinstance(handle, ctypes.c_void_p): handle = ctypes.c_void_p(handle) check_call( _LIB.MATXScriptModGetFunction( handle, c_str(name), ctypes.c_int(query_imports), ctypes.byref(ret_handle) ) ) if not ret_handle.value: raise AttributeError("Module has no function '%s'" % name) return PackedFunc(ret_handle.value, False)
[文档] def import_module(self, module): """Add module to the import list of current one. Parameters ---------- module : matx.runtime.Module The other module. """ handle = self.handle if not isinstance(handle, ctypes.c_void_p): handle = ctypes.c_void_p(handle) module_handle = module.handle if not isinstance(module_handle, ctypes.c_void_p): module_handle = ctypes.c_void_p(module_handle) check_call(_LIB.MATXScriptModImport(handle, module_handle))
def __getitem__(self, name): if not isinstance(name, string_types): raise ValueError("Can only take string as function name") return self.get_function(name) def __repr__(self): handle = self.handle if not isinstance(handle, ctypes.c_void_p): handle = ctypes.c_void_p(handle) return "Module(%s, %x)" % (self.type_key, handle.value) @property def type_key(self): """Get type key of the module.""" return _ffi_api.ModuleGetTypeKey(self)
[文档] def get_source(self, fmt=""): """Get source code from module, if available. Parameters ---------- fmt : str, optional The specified format. Returns ------- source : str The result source code. """ return _ffi_api.ModuleGetSource(self, fmt)
@property def imported_modules(self): """Get imported modules Returns ---------- modules : list of Module The module """ nmod = _ffi_api.ModuleImportsSize(self) return [_ffi_api.ModuleGetImport(self, i) for i in range(nmod)]
[文档] def save(self, file_name, fmt=""): """Save the module to file. This do not save the dependent device modules. See also export_shared Parameters ---------- file_name : str The name of the file. fmt : str The format of the file. See Also -------- runtime.Module.export_library : export the module to shared library. """ _ffi_api.ModuleSaveToFile(self, file_name, fmt)
def _collect_dso_modules(self): """Helper function to collect dso modules, then return it.""" visited, stack, dso_modules = set(), [], [] # append root module visited.add(self) stack.append(self) while stack: module = stack.pop() if module._dso_exportable(): dso_modules.append(module) for m in module.imported_modules: if m not in visited: visited.add(m) stack.append(m) return dso_modules def _dso_exportable(self): return self.type_key == "llvm" or self.type_key == "c"
[文档] def export_library(self, file_name, fcompile=None, addons=None, **kwargs): """Export the module and its imported device code one library. This function only works on host llvm modules. It will pack all the imported modules Parameters ---------- file_name : str The name of the shared library. fcompile : function(target, file_list, kwargs), optional Compilation function to use create dynamic library. If fcompile has attribute object_format, will compile host library to that format. Otherwise, will use default format "o". kwargs : dict, optional Additional arguments passed to fcompile """ # NOTE: this function depends on contrib library features # which are only available in when TVM function is available. if _RUNTIME_ONLY: raise RuntimeError("Cannot call export_library in runtime only mode") # Extra dependencies during runtime. from pathlib import Path from ..contrib import cc as _cc, tar as _tar, util as _util if isinstance(file_name, Path): file_name = str(file_name) assert self.type_key == "c" modules = self._collect_dso_modules() files = addons if addons else [] is_system_lib = False has_c_module = False llvm_target_triple = None for index, module in enumerate(modules): if fcompile is not None and hasattr(fcompile, "object_format"): object_format = fcompile.object_format else: assert module.type_key == "c" object_format = "cc" has_c_module = True # We use the same name to save the generated cpp file # dso/libXXX.cc path_obj = file_name[:-2] + 'cc' module.save(path_obj) files.append(path_obj) if not fcompile: if file_name.endswith(".tar"): fcompile = _tar.tar else: fcompile = _cc.create_shared if getattr(fcompile, "need_system_lib", False) and not is_system_lib: raise ValueError("%s need --system-lib option" % str(fcompile)) if self.imported_modules: raise RuntimeError("submodule is not supported!!!") path_cc = temp.relpath("devc.cc") with open(path_cc, "w") as f: f.write(_ffi_api.ModulePackImportsToC(self, is_system_lib)) files.append(path_cc) if has_c_module: options = [] if "options" in kwargs: opts = kwargs["options"] options = opts if isinstance(opts, (list, tuple)) else [opts] else: options = ["-std=c++14", "-O3"] if not _ffi_api.USE_CXX11_ABI(): options.append("-D_GLIBCXX_USE_CXX11_ABI=0") opts = options + ["-I" + path for path in find_include_path()] kwargs.update({"options": opts}) # print(file_name, files, kwargs) fcompile(file_name, files, **kwargs)
[文档]def system_lib(): """Get system-wide library module singleton. System lib is a global module that contains self register functions in startup. Unlike normal dso modules which need to be loaded explicitly. It is useful in environments where dynamic loading api like dlopen is banned. To build system lib function, simply specify target option ```llvm --system-lib``` The system lib will be available as long as the result code is linked by the program. The system lib is intended to be linked and loaded during the entire life-cyle of the program. If you want dynamic loading features, use dso modules instead. Returns ------- module : runtime.Module The system-wide library module. """ return _ffi_api.SystemLib()
[文档]def load_module(path, fmt=""): """Load module from file. Parameters ---------- path : str The path to the module file. fmt : str, optional The format of the file, if not specified it will be inferred from suffix of the file. Returns ------- module : runtime.Module The loaded module """ # Redirect to the load API return _ffi_api.ModuleLoadFromFile(path, fmt)
_set_class_module(Module)