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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/performance_manager/browser_child_process_watcher.h"
#include <memory>
#include <utility>
#include <vector>
#include "base/check.h"
#include "base/containers/contains.h"
#include "base/functional/bind.h"
#include "base/memory/ptr_util.h"
#include "base/process/process.h"
#include "components/performance_manager/graph/process_node_impl.h"
#include "components/performance_manager/performance_manager_impl.h"
#include "components/performance_manager/public/render_process_host_proxy.h"
#include "content/public/browser/child_process_data.h"
#include "content/public/browser/child_process_termination_info.h"
#include "content/public/common/process_type.h"
namespace performance_manager {
BrowserChildProcessWatcher::BrowserChildProcessWatcher() = default;
BrowserChildProcessWatcher::~BrowserChildProcessWatcher() {
DCHECK(!browser_process_node_);
DCHECK(tracked_process_nodes_.empty());
}
void BrowserChildProcessWatcher::Initialize() {
DCHECK(!browser_process_node_);
DCHECK(tracked_process_nodes_.empty());
browser_process_node_ =
PerformanceManagerImpl::CreateProcessNode(BrowserProcessNodeTag{});
OnProcessLaunched(base::Process::Current(), /*metrics_name=*/{},
browser_process_node_.get());
BrowserChildProcessObserver::Add(this);
}
void BrowserChildProcessWatcher::TearDown() {
BrowserChildProcessObserver::Remove(this);
std::vector<std::unique_ptr<NodeBase>> nodes;
nodes.reserve(tracked_process_nodes_.size() + 1);
if (browser_process_node_) {
nodes.push_back(std::move(browser_process_node_));
}
for (auto& node : tracked_process_nodes_) {
nodes.push_back(std::move(node.second));
}
tracked_process_nodes_.clear();
PerformanceManagerImpl::BatchDeleteNodes(std::move(nodes));
}
ProcessNodeImpl* BrowserChildProcessWatcher::GetChildProcessNode(
BrowserChildProcessHostId id) {
const auto it = tracked_process_nodes_.find(id);
return it != tracked_process_nodes_.end() ? it->second.get() : nullptr;
}
void BrowserChildProcessWatcher::CreateChildProcessNodeForTesting(
const content::ChildProcessData& data) {
CHECK(!base::Contains(tracked_process_nodes_,
BrowserChildProcessHostId(data.id)));
BrowserChildProcessLaunchedAndConnected(data);
}
void BrowserChildProcessWatcher::DeleteChildProcessNodeForTesting(
const content::ChildProcessData& data) {
CHECK(base::Contains(tracked_process_nodes_,
BrowserChildProcessHostId(data.id)));
BrowserChildProcessHostDisconnected(data);
}
void BrowserChildProcessWatcher::DeleteBrowserProcessNodeForTesting() {
CHECK(browser_process_node_);
NodeBase* node_base = browser_process_node_.release();
PerformanceManagerImpl::DeleteNode(base::WrapUnique(node_base));
}
void BrowserChildProcessWatcher::BrowserChildProcessLaunchedAndConnected(
const content::ChildProcessData& data) {
if (data.process_type == content::PROCESS_TYPE_GPU ||
data.process_type == content::PROCESS_TYPE_UTILITY) {
std::unique_ptr<ProcessNodeImpl> process_node =
PerformanceManagerImpl::CreateProcessNode(
static_cast<content::ProcessType>(data.process_type),
BrowserChildProcessHostProxy(BrowserChildProcessHostId(data.id)));
OnProcessLaunched(data.GetProcess(), data.metrics_name, process_node.get());
const auto [_, inserted] = tracked_process_nodes_.emplace(
BrowserChildProcessHostId(data.id), std::move(process_node));
CHECK(inserted);
}
}
void BrowserChildProcessWatcher::BrowserChildProcessHostDisconnected(
const content::ChildProcessData& data) {
if (data.process_type == content::PROCESS_TYPE_GPU ||
data.process_type == content::PROCESS_TYPE_UTILITY) {
auto it = tracked_process_nodes_.find(BrowserChildProcessHostId(data.id));
// Apparently there are cases where a disconnect notification arrives here
// either multiple times for the same process, or else before a
// launch-and-connect notification arrives.
// See https://crbug.com/942500.
if (it != tracked_process_nodes_.end()) {
PerformanceManagerImpl::DeleteNode(std::move(it->second));
tracked_process_nodes_.erase(it);
}
}
}
void BrowserChildProcessWatcher::BrowserChildProcessCrashed(
const content::ChildProcessData& data,
const content::ChildProcessTerminationInfo& info) {
if (data.process_type == content::PROCESS_TYPE_GPU ||
data.process_type == content::PROCESS_TYPE_UTILITY) {
TrackedProcessExited(BrowserChildProcessHostId(data.id), info.exit_code);
}
}
void BrowserChildProcessWatcher::BrowserChildProcessKilled(
const content::ChildProcessData& data,
const content::ChildProcessTerminationInfo& info) {
if (data.process_type == content::PROCESS_TYPE_GPU ||
data.process_type == content::PROCESS_TYPE_UTILITY) {
TrackedProcessExited(BrowserChildProcessHostId(data.id), info.exit_code);
}
}
void BrowserChildProcessWatcher::TrackedProcessExited(
BrowserChildProcessHostId id,
int exit_code) {
// It appears the exit code can be delivered either after the host is
// disconnected, or perhaps before the HostConnected notification,
// specifically on crash.
ProcessNodeImpl* process_node = GetChildProcessNode(id);
if (process_node) {
process_node->SetProcessExitStatus(exit_code);
}
}
// static
void BrowserChildProcessWatcher::OnProcessLaunched(
const base::Process& process,
const std::string& metrics_name,
ProcessNodeImpl* process_node) {
DCHECK(PerformanceManagerImpl::IsAvailable());
process_node->SetProcessMetricsName(metrics_name);
process_node->SetProcess(process.Duplicate(), base::TimeTicks::Now());
}
} // namespace performance_manager
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