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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_DEVTOOLS_TRACING_PROCESS_SET_MONITOR_H_
#define CONTENT_BROWSER_DEVTOOLS_TRACING_PROCESS_SET_MONITOR_H_
#include <memory>
#include <unordered_set>
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/raw_ref.h"
#include "base/process/process_handle.h"
#include "base/scoped_observation.h"
#include "content/browser/devtools/devtools_agent_host_impl.h"
#include "content/browser/devtools/devtools_session.h"
#include "content/public/browser/render_process_host_observer.h"
namespace content {
class TracingProcessSetMonitor : public DevToolsSession::ChildObserver,
public DevToolsAgentHostObserver {
public:
using ProcessAddedCallback =
base::RepeatingCallback<void(base::ProcessId pid)>;
// |callback| will be invoked once per each new process added after start.
// The process present at start time are not reported via the callback
// and are available through |GetPids()| below.
static std::unique_ptr<TracingProcessSetMonitor> Start(
DevToolsSession& root_session,
ProcessAddedCallback callback);
TracingProcessSetMonitor(const TracingProcessSetMonitor& r) = delete;
~TracingProcessSetMonitor() override;
const std::unordered_set<base::ProcessId>& GetPids() const {
return known_pids_;
}
void AddProcess(base::ProcessId pid);
private:
TracingProcessSetMonitor(DevToolsSession& root_session,
ProcessAddedCallback callback);
// DevToolsSession::ChildObserver methods.
void SessionAttached(DevToolsSession& session) override;
// DevToolsAgentHostObserver methods.
void DevToolsAgentHostDetached(DevToolsAgentHost* host) override;
void DevToolsAgentHostDestroyed(DevToolsAgentHost* host) override;
void DevToolsAgentHostProcessChanged(DevToolsAgentHost* host) override;
void MaybeAddProcess(DevToolsAgentHost* host);
raw_ref<DevToolsSession> const root_session_;
base::ScopedObservation<DevToolsSession, DevToolsSession::ChildObserver>
session_observation_{this};
const ProcessAddedCallback process_added_callback_;
bool in_init_{false};
std::unordered_set<raw_ptr<const DevToolsAgentHost, CtnExperimental>> hosts_;
std::unordered_set<base::ProcessId> known_pids_;
};
} // namespace content
#endif // CONTENT_BROWSER_DEVTOOLS_TRACING_PROCESS_SET_MONITOR_H_
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