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/*
* Copyright (C) 2015 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 "command.h"
#include <algorithm>
#include <map>
#include <string>
#include <vector>
#include <android-base/logging.h>
#include <android-base/parsedouble.h>
#include <android-base/parseint.h>
#include <android-base/quick_exit.h>
#include "utils.h"
bool Command::NextArgumentOrError(const std::vector<std::string>& args, size_t* pi) {
if (*pi + 1 == args.size()) {
LOG(ERROR) << "No argument following " << args[*pi] << " option. Try `simpleperf help " << name_
<< "`";
return false;
}
++*pi;
return true;
}
bool Command::GetDoubleOption(const std::vector<std::string>& args, size_t* pi, double* value,
double min, double max) {
if (!NextArgumentOrError(args, pi)) {
return false;
}
if (!android::base::ParseDouble(args[*pi].c_str(), value, min, max)) {
LOG(ERROR) << "Invalid argument for option " << args[*pi - 1] << ": " << args[*pi];
return false;
}
return true;
}
void Command::ReportUnknownOption(const std::vector<std::string>& args, size_t i) {
LOG(ERROR) << "Unknown option for " << name_ << " command: '" << args[i]
<< "'. Try `simpleperf help " << name_ << "`";
}
typedef std::function<std::unique_ptr<Command>(void)> callback_t;
static std::map<std::string, callback_t>& CommandMap() {
// commands is used in the constructor of Command. Defining it as a static
// variable in a function makes sure it is initialized before use.
static std::map<std::string, callback_t> command_map;
return command_map;
}
void RegisterCommand(const std::string& cmd_name,
const std::function<std::unique_ptr<Command>(void)>& callback) {
CommandMap().insert(std::make_pair(cmd_name, callback));
}
void UnRegisterCommand(const std::string& cmd_name) {
CommandMap().erase(cmd_name);
}
std::unique_ptr<Command> CreateCommandInstance(const std::string& cmd_name) {
auto it = CommandMap().find(cmd_name);
return (it == CommandMap().end()) ? nullptr : (it->second)();
}
const std::vector<std::string> GetAllCommandNames() {
std::vector<std::string> names;
for (const auto& pair : CommandMap()) {
names.push_back(pair.first);
}
return names;
}
extern void RegisterDumpRecordCommand();
extern void RegisterHelpCommand();
extern void RegisterInjectCommand();
extern void RegisterListCommand();
extern void RegisterKmemCommand();
extern void RegisterRecordCommand();
extern void RegisterReportCommand();
extern void RegisterReportSampleCommand();
extern void RegisterStatCommand();
extern void RegisterDebugUnwindCommand();
extern void RegisterTraceSchedCommand();
extern void RegisterAPICommands();
class CommandRegister {
public:
CommandRegister() {
RegisterDumpRecordCommand();
RegisterHelpCommand();
RegisterInjectCommand();
RegisterKmemCommand();
RegisterReportCommand();
RegisterReportSampleCommand();
#if defined(__linux__)
RegisterListCommand();
RegisterRecordCommand();
RegisterStatCommand();
RegisterDebugUnwindCommand();
RegisterTraceSchedCommand();
#if defined(__ANDROID__)
RegisterAPICommands();
#endif
#endif
}
};
CommandRegister command_register;
static void StderrLogger(android::base::LogId, android::base::LogSeverity severity,
const char*, const char* file, unsigned int line, const char* message) {
static const char log_characters[] = "VDIWEFF";
char severity_char = log_characters[severity];
fprintf(stderr, "simpleperf %c %s:%u] %s\n", severity_char, file, line, message);
}
bool RunSimpleperfCmd(int argc, char** argv) {
android::base::InitLogging(argv, StderrLogger);
std::vector<std::string> args;
android::base::LogSeverity log_severity = android::base::INFO;
for (int i = 1; i < argc; ++i) {
if (strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-h") == 0) {
args.insert(args.begin(), "help");
} else if (strcmp(argv[i], "--log") == 0) {
if (i + 1 < argc) {
++i;
if (!GetLogSeverity(argv[i], &log_severity)) {
LOG(ERROR) << "Unknown log severity: " << argv[i];
return false;
}
} else {
LOG(ERROR) << "Missing argument for --log option.\n";
return false;
}
#if defined(__ANDROID__)
} else if (strcmp(argv[i], "--log-to-android-buffer") == 0) {
android::base::SetLogger(android::base::LogdLogger());
#endif
} else if (strcmp(argv[i], "--version") == 0) {
LOG(INFO) << "Simpleperf version " << GetSimpleperfVersion();
return true;
} else {
args.push_back(argv[i]);
}
}
android::base::ScopedLogSeverity severity(log_severity);
if (args.empty()) {
args.push_back("help");
}
std::unique_ptr<Command> command = CreateCommandInstance(args[0]);
if (command == nullptr) {
LOG(ERROR) << "malformed command line: unknown command " << args[0];
return false;
}
std::string command_name = args[0];
args.erase(args.begin());
LOG(DEBUG) << "command '" << command_name << "' starts running";
bool result = command->Run(args);
LOG(DEBUG) << "command '" << command_name << "' "
<< (result ? "finished successfully" : "failed");
// Quick exit to avoid cost freeing memory and closing files.
fflush(stdout);
fflush(stderr);
android::base::quick_exit(result ? 0 : 1);
return result;
}
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