| // Copyright (C) 2019 The Android Open Source Project |
| // |
| // 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. |
| |
| #include "common/debug.h" |
| #include "prefetcher/read_ahead.h" |
| #include "prefetcher/task_id.h" |
| |
| #include <android-base/parseint.h> |
| #include <android-base/logging.h> |
| |
| #include <iostream> |
| #include <optional> |
| #include <string_view> |
| #include <string> |
| #include <vector> |
| |
| #include <signal.h> |
| #include <unistd.h> |
| |
| |
| namespace iorap::prefetcher { |
| |
| static void UsageClient(char** argv) { |
| std::cerr << "UsageClient: " << argv[0] << " <path-to-compiled-trace.pb> [... pathN]" << std::endl; |
| std::cerr << "" << std::endl; |
| std::cerr << " Run the readahead daemon which can prefetch files given a command." << std::endl; |
| std::cerr << "" << std::endl; |
| std::cerr << " Optional flags:" << std::endl; |
| std::cerr << " --help,-h Print this UsageClient." << std::endl; |
| std::cerr << " --verbose,-v Set verbosity (default off)." << std::endl; |
| std::cerr << " --task-duration-ms,-tdm Set task duration (default: 0ms)." << std::endl; |
| std::cerr << " --use-sockets,-us Use AF_UNIX sockets (default: off)" << std::endl; |
| std::cerr << " --wait,-w Wait for key stroke before continuing (default off)." << std::endl; |
| exit(1); |
| } |
| |
| int MainClient(int argc, char** argv) { |
| android::base::InitLogging(argv); |
| android::base::SetLogger(android::base::StderrLogger); |
| |
| bool wait_for_keystroke = false; |
| bool enable_verbose = false; |
| |
| bool command_format_text = false; // false = binary. |
| |
| unsigned int arg_task_duration_ms = 10000; |
| std::vector<std::string> arg_input_filenames; |
| bool arg_use_sockets = false; |
| |
| LOG(VERBOSE) << "argparse: argc=" << argc; |
| |
| for (int arg = 1; arg < argc; ++arg) { |
| std::string argstr = argv[arg]; |
| bool has_arg_next = (arg+1)<argc; |
| std::string arg_next = has_arg_next ? argv[arg+1] : ""; |
| |
| LOG(VERBOSE) << "argparse: argv[" << arg << "]=" << argstr; |
| |
| if (argstr == "--help" || argstr == "-h") { |
| UsageClient(argv); |
| } else if (argstr == "--use-sockets" || argstr == "-us") { |
| arg_use_sockets = true; |
| } else if (argstr == "--verbose" || argstr == "-v") { |
| enable_verbose = true; |
| } else if (argstr == "--wait" || argstr == "-w") { |
| wait_for_keystroke = true; |
| } else if (argstr == "--task-duration-ms" || argstr == "-tdm") { |
| if (!has_arg_next) { |
| LOG(ERROR) << "--task-duration-ms: requires uint parameter"; |
| UsageClient(argv); |
| } else if (!::android::base::ParseUint(arg_next, &arg_task_duration_ms)) { |
| LOG(ERROR) << "--task-duration-ms: requires non-negative parameter"; |
| UsageClient(argv); |
| } |
| } else { |
| arg_input_filenames.push_back(argstr); |
| } |
| } |
| |
| if (enable_verbose) { |
| android::base::SetMinimumLogSeverity(android::base::VERBOSE); |
| |
| LOG(VERBOSE) << "Verbose check"; |
| LOG(VERBOSE) << "Debug check: " << ::iorap::kIsDebugBuild; |
| } else { |
| android::base::SetMinimumLogSeverity(android::base::DEBUG); |
| } |
| |
| LOG(VERBOSE) << "argparse: argc=" << argc; |
| |
| for (int arg = 1; arg < argc; ++arg) { |
| std::string argstr = argv[arg]; |
| |
| LOG(VERBOSE) << "argparse: argv[" << arg << "]=" << argstr; |
| } |
| |
| // Useful to attach a debugger... |
| // 1) $> iorap.cmd.readahead -w <args> |
| // 2) $> gdbclient <pid> |
| if (wait_for_keystroke) { |
| LOG(INFO) << "Self pid: " << getpid(); |
| |
| raise(SIGSTOP); |
| // LOG(INFO) << "Press any key to continue..."; |
| // std::cin >> wait_for_keystroke; |
| } |
| |
| // auto system_call = std::make_unique<SystemCallImpl>(); |
| // TODO: mock readahead calls? |
| // |
| // Uncomment this if we want to leave the process around to inspect it from adb shell. |
| // sleep(100000); |
| |
| int return_code = 0; |
| |
| LOG(VERBOSE) << "Hello world"; |
| |
| ReadAhead read_ahead{arg_use_sockets}; // Don't count the time it takes to fork+exec. |
| |
| size_t task_id_counter = 0; |
| for (const std::string& compiled_trace_path : arg_input_filenames) { |
| TaskId task_id{task_id_counter++, compiled_trace_path}; |
| |
| LOG(DEBUG) << "main: ReadAhead BeginTask: " |
| << "task_duration_ms=" << arg_task_duration_ms << "," |
| << task_id; |
| |
| read_ahead.BeginTask(task_id); |
| usleep(arg_task_duration_ms*1000); |
| |
| LOG(DEBUG) << "main: ReadAhead FinishTask: " << task_id; |
| |
| read_ahead.FinishTask(task_id); |
| } |
| LOG(VERBOSE) << "main: Terminating"; |
| |
| // 0 -> successfully executed all commands. |
| // 1 -> failed along the way (#on_error and also see the error logs). |
| return return_code; |
| } |
| |
| } // namespace iorap::prefetcher |
| |
| #if defined(IORAP_PREFETCHER_MAIN_CLIENT) |
| int main(int argc, char** argv) { |
| return ::iorap::prefetcher::MainClient(argc, argv); |
| } |
| |
| #endif // IORAP_PREFETCHER_MAIN_CLIENT |