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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/task_profiler/task_profiler_data_serializer.h"
#include "base/file_util.h"
#include "base/files/file_path.h"
#include "base/json/json_string_value_serializer.h"
#include "base/time/time.h"
#include "base/tracked_objects.h"
#include "content/public/common/content_client.h"
#include "content/public/common/process_type.h"
#include "url/gurl.h"
using base::DictionaryValue;
using base::ListValue;
using base::Value;
using tracked_objects::BirthOnThreadSnapshot;
using tracked_objects::DeathDataSnapshot;
using tracked_objects::LocationSnapshot;
using tracked_objects::ParentChildPairSnapshot;
using tracked_objects::TaskSnapshot;
using tracked_objects::ProcessDataSnapshot;
namespace {
// Re-serializes the |location| into |dictionary|.
void LocationSnapshotToValue(const LocationSnapshot& location,
base::DictionaryValue* dictionary) {
dictionary->Set("file_name",
base::Value::CreateStringValue(location.file_name));
// Note: This function name is not escaped, and templates have less-than
// characters, which means this is not suitable for display as HTML unless
// properly escaped.
dictionary->Set("function_name",
base::Value::CreateStringValue(location.function_name));
dictionary->Set("line_number",
base::Value::CreateIntegerValue(location.line_number));
}
// Re-serializes the |birth| into |dictionary|. Prepends the |prefix| to the
// "thread" and "location" key names in the dictionary.
void BirthOnThreadSnapshotToValue(const BirthOnThreadSnapshot& birth,
const std::string& prefix,
base::DictionaryValue* dictionary) {
DCHECK(!prefix.empty());
scoped_ptr<base::DictionaryValue> location_value(new base::DictionaryValue);
LocationSnapshotToValue(birth.location, location_value.get());
dictionary->Set(prefix + "_location", location_value.release());
dictionary->Set(prefix + "_thread",
base::Value::CreateStringValue(birth.thread_name));
}
// Re-serializes the |death_data| into |dictionary|.
void DeathDataSnapshotToValue(const DeathDataSnapshot& death_data,
base::DictionaryValue* dictionary) {
dictionary->Set("count",
base::Value::CreateIntegerValue(death_data.count));
dictionary->Set("run_ms",
base::Value::CreateIntegerValue(death_data.run_duration_sum));
dictionary->Set("run_ms_max",
base::Value::CreateIntegerValue(death_data.run_duration_max));
dictionary->Set("run_ms_sample",
base::Value::CreateIntegerValue(
death_data.run_duration_sample));
dictionary->Set("queue_ms",
base::Value::CreateIntegerValue(
death_data.queue_duration_sum));
dictionary->Set("queue_ms_max",
base::Value::CreateIntegerValue(
death_data.queue_duration_max));
dictionary->Set("queue_ms_sample",
base::Value::CreateIntegerValue(
death_data.queue_duration_sample));
}
// Re-serializes the |snapshot| into |dictionary|.
void TaskSnapshotToValue(const TaskSnapshot& snapshot,
base::DictionaryValue* dictionary) {
BirthOnThreadSnapshotToValue(snapshot.birth, "birth", dictionary);
scoped_ptr<base::DictionaryValue> death_data(new base::DictionaryValue);
DeathDataSnapshotToValue(snapshot.death_data, death_data.get());
dictionary->Set("death_data", death_data.release());
dictionary->Set("death_thread",
base::Value::CreateStringValue(snapshot.death_thread_name));
}
} // anonymous namespace
namespace task_profiler {
// static
void TaskProfilerDataSerializer::ToValue(
const ProcessDataSnapshot& process_data,
int process_type,
base::DictionaryValue* dictionary) {
scoped_ptr<base::ListValue> tasks_list(new base::ListValue);
for (std::vector<TaskSnapshot>::const_iterator it =
process_data.tasks.begin();
it != process_data.tasks.end(); ++it) {
scoped_ptr<base::DictionaryValue> snapshot(new base::DictionaryValue);
TaskSnapshotToValue(*it, snapshot.get());
tasks_list->Append(snapshot.release());
}
dictionary->Set("list", tasks_list.release());
dictionary->SetInteger("process_id", process_data.process_id);
dictionary->SetString("process_type",
content::GetProcessTypeNameInEnglish(process_type));
scoped_ptr<base::ListValue> descendants_list(new base::ListValue);
for (std::vector<ParentChildPairSnapshot>::const_iterator it =
process_data.descendants.begin();
it != process_data.descendants.end(); ++it) {
scoped_ptr<base::DictionaryValue> parent_child(new base::DictionaryValue);
BirthOnThreadSnapshotToValue(it->parent, "parent", parent_child.get());
BirthOnThreadSnapshotToValue(it->child, "child", parent_child.get());
descendants_list->Append(parent_child.release());
}
dictionary->Set("descendants", descendants_list.release());
}
bool TaskProfilerDataSerializer::WriteToFile(const base::FilePath& path) {
std::string output;
JSONStringValueSerializer serializer(&output);
serializer.set_pretty_print(true);
scoped_ptr<base::DictionaryValue> root(new base::DictionaryValue());
base::ListValue* snapshot_list = new base::ListValue();
base::DictionaryValue* shutdown_snapshot = new base::DictionaryValue();
base::ListValue* per_process_data = new base::ListValue();
root->SetInteger("version", 1);
root->SetString("userAgent", content::GetUserAgent(GURL()));
// TODO(ramant): Collect data from other processes, then add that data to the
// 'per_process_data' array here. Should leverage the TrackingSynchronizer
// class to implement this.
ProcessDataSnapshot this_process_data;
tracked_objects::ThreadData::Snapshot(false, &this_process_data);
scoped_ptr<base::DictionaryValue> this_process_data_json(
new base::DictionaryValue);
TaskProfilerDataSerializer::ToValue(this_process_data,
content::PROCESS_TYPE_BROWSER,
this_process_data_json.get());
per_process_data->Append(this_process_data_json.release());
shutdown_snapshot->SetInteger(
"timestamp",
(base::Time::Now() - base::Time::UnixEpoch()).InSeconds());
shutdown_snapshot->Set("data", per_process_data);
snapshot_list->Append(shutdown_snapshot);
root->Set("snapshots", snapshot_list);
serializer.Serialize(*root);
int data_size = static_cast<int>(output.size());
return data_size == file_util::WriteFile(path, output.data(), data_size);
}
} // namespace task_profiler
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