/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "command.h"
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#include <algorithm>
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#include <map>
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#include <string>
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#include <vector>
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#include <android-base/logging.h>
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#include <android-base/parsedouble.h>
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#include <android-base/parseint.h>
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#include <android-base/quick_exit.h>
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#include "utils.h"
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bool Command::NextArgumentOrError(const std::vector<std::string>& args, size_t* pi) {
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if (*pi + 1 == args.size()) {
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LOG(ERROR) << "No argument following " << args[*pi] << " option. Try `simpleperf help " << name_
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<< "`";
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return false;
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}
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++*pi;
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return true;
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}
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bool Command::GetDoubleOption(const std::vector<std::string>& args, size_t* pi, double* value,
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double min, double max) {
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if (!NextArgumentOrError(args, pi)) {
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return false;
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}
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if (!android::base::ParseDouble(args[*pi].c_str(), value, min, max)) {
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LOG(ERROR) << "Invalid argument for option " << args[*pi - 1] << ": " << args[*pi];
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return false;
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}
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return true;
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}
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void Command::ReportUnknownOption(const std::vector<std::string>& args, size_t i) {
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LOG(ERROR) << "Unknown option for " << name_ << " command: '" << args[i]
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<< "'. Try `simpleperf help " << name_ << "`";
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}
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typedef std::function<std::unique_ptr<Command>(void)> callback_t;
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static std::map<std::string, callback_t>& CommandMap() {
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// commands is used in the constructor of Command. Defining it as a static
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// variable in a function makes sure it is initialized before use.
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static std::map<std::string, callback_t> command_map;
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return command_map;
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}
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void RegisterCommand(const std::string& cmd_name,
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const std::function<std::unique_ptr<Command>(void)>& callback) {
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CommandMap().insert(std::make_pair(cmd_name, callback));
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}
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void UnRegisterCommand(const std::string& cmd_name) {
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CommandMap().erase(cmd_name);
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}
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std::unique_ptr<Command> CreateCommandInstance(const std::string& cmd_name) {
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auto it = CommandMap().find(cmd_name);
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return (it == CommandMap().end()) ? nullptr : (it->second)();
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}
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const std::vector<std::string> GetAllCommandNames() {
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std::vector<std::string> names;
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for (const auto& pair : CommandMap()) {
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names.push_back(pair.first);
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}
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return names;
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}
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extern void RegisterDumpRecordCommand();
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extern void RegisterHelpCommand();
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extern void RegisterListCommand();
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extern void RegisterKmemCommand();
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extern void RegisterRecordCommand();
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extern void RegisterReportCommand();
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extern void RegisterReportSampleCommand();
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extern void RegisterStatCommand();
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extern void RegisterDebugUnwindCommand();
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extern void RegisterTraceSchedCommand();
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extern void RegisterAPICommands();
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class CommandRegister {
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public:
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CommandRegister() {
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RegisterDumpRecordCommand();
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RegisterHelpCommand();
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RegisterKmemCommand();
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RegisterReportCommand();
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RegisterReportSampleCommand();
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#if defined(__linux__)
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RegisterListCommand();
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RegisterRecordCommand();
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RegisterStatCommand();
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RegisterDebugUnwindCommand();
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RegisterTraceSchedCommand();
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#if defined(__ANDROID__)
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RegisterAPICommands();
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#endif
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#endif
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}
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};
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CommandRegister command_register;
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static void StderrLogger(android::base::LogId, android::base::LogSeverity severity,
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const char*, const char* file, unsigned int line, const char* message) {
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static const char log_characters[] = "VDIWEFF";
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char severity_char = log_characters[severity];
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fprintf(stderr, "simpleperf %c %s:%u] %s\n", severity_char, file, line, message);
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}
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bool RunSimpleperfCmd(int argc, char** argv) {
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android::base::InitLogging(argv, StderrLogger);
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std::vector<std::string> args;
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android::base::LogSeverity log_severity = android::base::INFO;
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for (int i = 1; i < argc; ++i) {
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if (strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-h") == 0) {
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args.insert(args.begin(), "help");
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} else if (strcmp(argv[i], "--log") == 0) {
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if (i + 1 < argc) {
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++i;
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if (!GetLogSeverity(argv[i], &log_severity)) {
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LOG(ERROR) << "Unknown log severity: " << argv[i];
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return false;
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}
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} else {
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LOG(ERROR) << "Missing argument for --log option.\n";
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return false;
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}
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#if defined(__ANDROID__)
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} else if (strcmp(argv[i], "--log-to-android-buffer") == 0) {
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android::base::SetLogger(android::base::LogdLogger());
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#endif
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} else if (strcmp(argv[i], "--version") == 0) {
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LOG(INFO) << "Simpleperf version " << GetSimpleperfVersion();
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return true;
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} else {
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args.push_back(argv[i]);
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}
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}
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android::base::ScopedLogSeverity severity(log_severity);
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if (args.empty()) {
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args.push_back("help");
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}
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std::unique_ptr<Command> command = CreateCommandInstance(args[0]);
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if (command == nullptr) {
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LOG(ERROR) << "malformed command line: unknown command " << args[0];
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return false;
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}
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std::string command_name = args[0];
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args.erase(args.begin());
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LOG(DEBUG) << "command '" << command_name << "' starts running";
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bool result = command->Run(args);
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LOG(DEBUG) << "command '" << command_name << "' "
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<< (result ? "finished successfully" : "failed");
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// Quick exit to avoid cost freeing memory and closing files.
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fflush(stdout);
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fflush(stderr);
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android::base::quick_exit(result ? 0 : 1);
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return result;
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}
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