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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.
#ifndef CHROMEOS_PROCESS_PROXY_PROCESS_PROXY_REGISTRY_H_
#define CHROMEOS_PROCESS_PROXY_PROCESS_PROXY_REGISTRY_H_
#include <map>
#include <string>
#include "base/callback.h"
#include "base/lazy_instance.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/threading/non_thread_safe.h"
#include "base/threading/thread.h"
#include "chromeos/chromeos_export.h"
#include "chromeos/process_proxy/process_proxy.h"
namespace chromeos {
typedef base::Callback<void(pid_t, const std::string&, const std::string&)>
ProcessOutputCallbackWithPid;
// Keeps track of all created ProcessProxies. It is created lazily and should
// live on a single thread (where all methods must be called).
class CHROMEOS_EXPORT ProcessProxyRegistry : public base::NonThreadSafe {
public:
// Info we need about a ProcessProxy instance.
struct ProcessProxyInfo {
scoped_refptr<ProcessProxy> proxy;
ProcessOutputCallbackWithPid callback;
pid_t process_id;
ProcessProxyInfo();
// This is to make map::insert happy, we don't init anything.
ProcessProxyInfo(const ProcessProxyInfo& other);
~ProcessProxyInfo();
};
static ProcessProxyRegistry* Get();
// Starts new ProcessProxy (which starts new process).
bool OpenProcess(const std::string& command, pid_t* pid,
const ProcessOutputCallbackWithPid& callback);
// Sends data to the process with id |pid|.
bool SendInput(pid_t pid, const std::string& data);
// Stops the process with id |pid|.
bool CloseProcess(pid_t pid);
// Reports terminal resize to process proxy.
bool OnTerminalResize(pid_t pid, int width, int height);
// Shuts down registry, closing all associated processed.
void ShutDown();
// Currently used for testing.
void SetOutputCallback(const ProcessOutputCallback& callback);
private:
friend struct ::base::DefaultLazyInstanceTraits<ProcessProxyRegistry>;
ProcessProxyRegistry();
~ProcessProxyRegistry();
// Gets called when output gets detected.
void OnProcessOutput(pid_t pid,
ProcessOutputType type,
const std::string& data);
bool EnsureWatcherThreadStarted();
// Map of all existing ProcessProxies.
std::map<pid_t, ProcessProxyInfo> proxy_map_;
scoped_ptr<base::Thread> watcher_thread_;
DISALLOW_COPY_AND_ASSIGN(ProcessProxyRegistry);
};
} // namespace chromeos
#endif // CHROMEOS_PROCESS_PROXY_PROCESS_PROXY_REGISTRY_H_