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/*
* Copyright (C) 2022 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 <sys/stat.h>
#include <android-base/properties.h>
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
#include "cmd_record_impl.h"
#include "command.h"
#include "utils.h"
#include "workload.h"
namespace simpleperf {
namespace {
enum class Action {
NONE,
ENABLE,
DISABLE,
RECORD,
};
const std::string RECORD_OUT_DIR = "/data/simpleperf_boot_data";
class BootRecordCommand : public Command {
public:
BootRecordCommand()
: Command(
"boot-record", "record at boot time",
// clang-format off
"Usage: simpleperf boot-record [options]\n"
" Record boot-time profiles. Only supported on userdebug/eng build. The record file will be\n"
" stored in /data/simpleperf_boot_data.\n"
"--enable <record_options> Enable boot time recording. Record options are options passed\n"
" to simpleperf record cmd, like \"-a -g --duration 10\".\n"
"--disable Disable record at boot time.\n"
#if 0
// The following option is only used internally.
"--record <record_options> Record with record options.\n"
#endif
// clang-format on
) {
}
bool Run(const std::vector<std::string>& args);
private:
bool ParseOptions(const std::vector<std::string>& args);
bool SetRecordOptions(const std::string& record_options);
bool CheckRecordOptions(const std::string& record_options);
bool CreateOutDir();
bool Record();
std::string GetDefaultOutputFilename();
Action action_ = Action::NONE;
std::string record_options_;
};
bool BootRecordCommand::Run(const std::vector<std::string>& args) {
if (!ParseOptions(args)) {
return false;
}
if (action_ == Action::ENABLE) {
if (!CheckRecordOptions(record_options_) || !SetRecordOptions(record_options_) ||
!CreateOutDir()) {
return false;
}
LOG(INFO) << "After boot, boot profile will be stored in " << RECORD_OUT_DIR;
return true;
}
if (action_ == Action::DISABLE) {
return SetRecordOptions("");
}
if (action_ == Action::RECORD) {
return Record();
}
return true;
}
bool BootRecordCommand::ParseOptions(const std::vector<std::string>& args) {
const OptionFormatMap option_formats = {
{"--enable", {OptionValueType::STRING, OptionType::SINGLE}},
{"--disable", {OptionValueType::NONE, OptionType::SINGLE}},
{"--record", {OptionValueType::STRING, OptionType::SINGLE}},
};
OptionValueMap options;
std::vector<std::pair<OptionName, OptionValue>> ordered_options;
std::vector<std::string> non_option_args;
if (!PreprocessOptions(args, option_formats, &options, &ordered_options, &non_option_args)) {
return false;
}
if (auto value = options.PullValue("--enable"); value) {
action_ = Action::ENABLE;
record_options_ = *value->str_value;
} else if (options.PullBoolValue("--disable")) {
action_ = Action::DISABLE;
} else if (auto value = options.PullValue("--record"); value) {
action_ = Action::RECORD;
record_options_ = *value->str_value;
}
return true;
}
bool BootRecordCommand::SetRecordOptions(const std::string& record_options) {
const std::string prop_name = "persist.simpleperf.boot_record";
if (!android::base::SetProperty(prop_name, record_options)) {
LOG(ERROR) << "Failed to SetProperty " << prop_name << " to \"" << record_options << "\"";
return false;
}
return true;
}
bool BootRecordCommand::CheckRecordOptions(const std::string& record_options) {
std::vector<std::string> args = android::base::Split(record_options, " ");
OptionValueMap options;
std::vector<std::pair<OptionName, OptionValue>> ordered_options;
std::vector<std::string> non_option_args;
if (!PreprocessOptions(args, GetRecordCmdOptionFormats(), &options, &ordered_options,
&non_option_args)) {
LOG(ERROR) << "Invalid record options.";
return false;
}
if (!non_option_args.empty()) {
LOG(ERROR) << "Running child command isn't allowed";
return false;
}
if (auto value = options.PullValue("-o"); value) {
LOG(ERROR) << "-o option isn't allowed. The output file is stored in " << RECORD_OUT_DIR;
return false;
}
return true;
}
bool BootRecordCommand::CreateOutDir() {
if (!IsDir(RECORD_OUT_DIR)) {
if (mkdir(RECORD_OUT_DIR.c_str(), 0775) != 0) {
PLOG(ERROR) << "failed to create dir " << RECORD_OUT_DIR;
return false;
}
return Workload::RunCmd(
{"chcon", "u:object_r:simpleperf_boot_data_file:s0", "/data/simpleperf_boot_data"});
}
return true;
}
bool BootRecordCommand::Record() {
if (!CheckRecordOptions(record_options_)) {
return false;
}
std::vector<std::string> args = android::base::Split(record_options_, " ");
std::string output_file = RECORD_OUT_DIR + "/" + GetDefaultOutputFilename();
args.emplace_back("-o");
args.emplace_back(output_file);
std::unique_ptr<Command> record_cmd = CreateCommandInstance("record");
CHECK(record_cmd != nullptr);
return record_cmd->Run(args);
}
std::string BootRecordCommand::GetDefaultOutputFilename() {
time_t t = time(nullptr);
struct tm tm;
if (localtime_r(&t, &tm) != &tm) {
return "perf.data";
}
return android::base::StringPrintf("perf-%04d%02d%02d-%02d-%02d-%02d.data", tm.tm_year + 1900,
tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
}
} // namespace
void RegisterBootRecordCommand() {
RegisterCommand("boot-record", [] { return std::unique_ptr<Command>(new BootRecordCommand); });
}
} // namespace simpleperf
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