tqchen commented on a change in pull request #4281: [RUTNIME] Support C++ RPC URL: https://github.com/apache/incubator-tvm/pull/4281#discussion_r344453588
########## File path: apps/cpp_rpc/rpc_env.cc ########## @@ -0,0 +1,247 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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. + */ + +/*! + * \file rpc_env.cc + * \brief Server environment of the RPC. + */ +#include <tvm/runtime/registry.h> +#include <errno.h> +#ifndef _MSC_VER +#include <sys/stat.h> +#include <dirent.h> +#include <unistd.h> +#else +#include <Windows.h> +#endif +#include <fstream> +#include <vector> +#include <iostream> +#include <string> +#include <cstring> + +#include "rpc_env.h" +#include "../../src/common/util.h" +#include "../../src/runtime/file_util.h" + +namespace tvm { +namespace runtime { + +RPCEnv::RPCEnv() { + #if defined(__linux__) || defined(__ANDROID__) + base_ = "./rpc"; + mkdir(&base_[0], 0777); + + TVM_REGISTER_GLOBAL("tvm.rpc.server.workpath") + .set_body([](TVMArgs args, TVMRetValue* rv) { + static RPCEnv env; + *rv = env.GetPath(args[0]); + }); + + TVM_REGISTER_GLOBAL("tvm.rpc.server.load_module") + .set_body([](TVMArgs args, TVMRetValue *rv) { + static RPCEnv env; + std::string file_name = env.GetPath(args[0]); + *rv = Load(&file_name, ""); + LOG(INFO) << "Load module from " << file_name << " ..."; + }); + #else + LOG(FATAL) << "Only support RPC in linux environment"; + #endif +} +/*! + * \brief GetPath To get the workpath from packed function + * \param name The file name + * \return The full path of file. + */ +std::string RPCEnv::GetPath(std::string file_name) { + // we assume file_name has "/" means file_name is the exact path + // and does not create /.rpc/ + if (file_name.find("/") != std::string::npos) { + return file_name; + } else { + return base_ + "/" + file_name; + } +} +/*! + * \brief Remove The RPC Environment cleanup function + */ +void RPCEnv::CleanUp() { + #if defined(__linux__) || defined(__ANDROID__) + CleanDir(&base_[0]); + int ret = rmdir(&base_[0]); + if (ret != 0) { + LOG(WARNING) << "Remove directory " << base_ << " failed"; + } + #else + LOG(FATAL) << "Only support RPC in linux environment"; + #endif +} + +/*! + * \brief ListDir get the list of files in a directory + * \param dirname The root directory name + * \return vector Files in directory. + */ +std::vector<std::string> ListDir(const std::string &dirname) { + std::vector<std::string> vec; + #ifndef _MSC_VER + DIR *dp = opendir(dirname.c_str()); + if (dp == NULL) { + int errsv = errno; + LOG(FATAL) << "ListDir " << dirname <<" error: " << strerror(errsv); + } + dirent *d; + while ((d = readdir(dp)) != NULL) { + std::string filename = d->d_name; + if (filename != "." && filename != "..") { + std::string f = dirname; + if (f[f.length() - 1] != '/') { + f += '/'; + } + f += d->d_name; + vec.push_back(f); + } + } + closedir(dp); + #else + WIN32_FIND_DATA fd; + std::string pattern = dirname + "/*"; + HANDLE handle = FindFirstFile(pattern.c_str(), &fd); + if (handle == INVALID_HANDLE_VALUE) { + int errsv = GetLastError(); + LOG(FATAL) << "ListDir " << dirname << " error: " << strerror(errsv); + } + do { + if (fd.cFileName != "." && fd.cFileName != "..") { + std::string f = dirname; + char clast = f[f.length() - 1]; + if (f == ".") { + f = fd.cFileName; + } else if (clast != '/' && clast != '\\') { + f += '/'; + f += fd.cFileName; + } + vec.push_back(f); + } + } while (FindNextFile(handle, &fd)); + FindClose(handle); + #endif + return vec; +} + +/*! + * \brief LinuxShared Creates a linux shared library + * \param output The output file name + * \param files The files for building + * \param options The compiler options + * \param cc The compiler + */ +void LinuxShared(const std::string output, + const std::vector<std::string> &files, + std::string options = "", + std::string cc = "g++") { + std::string cmd = cc; + cmd += " -shared -fPIC "; + cmd += " -o " + output; + for (auto f = files.begin(); f != files.end(); ++f) { + cmd += " " + *f; + } + cmd += " " + options; + CHECK(system(cmd.c_str()) == 0) << "Compilation error."; +} + +/*! + * \brief CreateShared Creates a shared library + * \param output The output file name + * \param files The files for building + */ +void CreateShared(const std::string output, const std::vector<std::string> &files) { + #if defined(__linux__) || defined(__ANDROID__) + LinuxShared(output, files); + #else + LOG(FATAL) << "Do not support creating shared library"; + #endif +} + +/*! + * \brief Load Load module from file + This function will automatically call + cc.create_shared if the path is in format .o or .tar + High level handling for .o and .tar file. + We support this to be consistent with RPC module load. + * \param fileIn The input file, file name will be updated + * \param fmt The format of file + * \return Module The loaded module + */ +Module Load(std::string *fileIn, const std::string fmt) { + std::string file = *fileIn; + if (common::EndsWith(file, ".so")) { + return Module::LoadFromFile(file, fmt); + } + + #if defined(__linux__) || defined(__ANDROID__) + std::string file_name = file + ".so"; + if (common::EndsWith(file, ".o")) { + std::vector<std::string> files; + files.push_back(file); + CreateShared(file_name, files); + } else if (common::EndsWith(file, ".tar")) { + std::string tmp_dir = "./rpc/tmp/"; + mkdir(&tmp_dir[0], 0777); + std::string cmd = "tar -C " + tmp_dir + " -zxf " + file; + CHECK(system(cmd.c_str()) == 0) << "Untar library error."; Review comment: It would be great to have a wrapper similar to python's popen: where we can capture the stderr using pipe and and throw it in the error message ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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