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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMEOS_PROCESS_PROXY_PROCESS_PROXY_REGISTRY_H_
#define CHROMEOS_PROCESS_PROXY_PROCESS_PROXY_REGISTRY_H_
#include <map>
#include <memory>
#include <string>
#include "base/command_line.h"
#include "base/component_export.h"
#include "base/functional/callback.h"
#include "base/lazy_instance.h"
#include "base/memory/ref_counted.h"
#include "base/sequence_checker.h"
#include "base/task/sequenced_task_runner.h"
#include "base/threading/thread.h"
#include "chromeos/process_proxy/process_proxy.h"
namespace chromeos {
// Keeps track of all created ProcessProxies. It is created lazily and should
// live on a single thread (where all methods must be called).
class COMPONENT_EXPORT(CHROMEOS_PROCESS_PROXY) ProcessProxyRegistry {
public:
using OutputCallback =
base::RepeatingCallback<void(const std::string& id,
const std::string& output_type,
const std::string& output_data)>;
// Info we need about a ProcessProxy instance.
struct ProcessProxyInfo {
scoped_refptr<ProcessProxy> proxy;
OutputCallback callback;
ProcessProxyInfo();
// This is to make map::insert happy, we don't init anything.
ProcessProxyInfo(const ProcessProxyInfo& other);
~ProcessProxyInfo();
};
static ProcessProxyRegistry* Get();
ProcessProxyRegistry(const ProcessProxyRegistry&) = delete;
ProcessProxyRegistry& operator=(const ProcessProxyRegistry&) = delete;
// Converts the id returned by OpenProcess() to the system pid.
static int ConvertToSystemPID(const std::string& id);
// Returns a SequencedTaskRunner where the singleton instance of
// ProcessProxyRegistry lives.
static scoped_refptr<base::SequencedTaskRunner> GetTaskRunner();
// Starts new ProcessProxy (which starts new process).
// Returns true if the process is created successfully, false otherwise.
// The unique process id is passed back via |id|.
bool OpenProcess(const base::CommandLine& cmdline,
const std::string& user_id_hash,
const OutputCallback& callback,
std::string* id);
// Sends data to the process identified by |id|.
void SendInput(const std::string& id,
const std::string& data,
base::OnceCallback<void(bool)> callback);
// Stops the process identified by |id|.
bool CloseProcess(const std::string& id);
// Reports terminal resize to process proxy.
bool OnTerminalResize(const std::string& id, int width, int height);
// Notifies process proxy identified by |id| that previously reported output
// has been handled.
void AckOutput(const std::string& id);
// Shuts down registry, closing all associated processed.
void ShutDown();
// Get the process for testing purposes.
const base::Process* GetProcessForTesting(const std::string& id);
private:
friend struct ::base::LazyInstanceTraitsBase<ProcessProxyRegistry>;
ProcessProxyRegistry();
~ProcessProxyRegistry();
// Gets called when output gets detected.
void OnProcessOutput(const std::string& id,
ProcessOutputType type,
const std::string& data);
bool EnsureWatcherThreadStarted();
// Map of all existing ProcessProxies.
std::map<std::string, ProcessProxyInfo> proxy_map_;
std::unique_ptr<base::Thread> watcher_thread_;
SEQUENCE_CHECKER(sequence_checker_);
};
} // namespace chromeos
#endif // CHROMEOS_PROCESS_PROXY_PROCESS_PROXY_REGISTRY_H_
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