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// Copyright (c) 2011 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 CHROME_BROWSER_NACL_HOST_NACL_PROCESS_HOST_H_
#define CHROME_BROWSER_NACL_HOST_NACL_PROCESS_HOST_H_
#pragma once
#include "build/build_config.h"
#include "base/file_path.h"
#include "base/file_util_proxy.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "chrome/common/nacl_types.h"
#include "content/browser/browser_child_process_host.h"
class ChromeRenderMessageFilter;
// Represents the browser side of the browser <--> NaCl communication
// channel. There will be one NaClProcessHost per NaCl process
// The browser is responsible for starting the NaCl process
// when requested by the renderer.
// After that, most of the communication is directly between NaCl plugin
// running in the renderer and NaCl processes.
class NaClProcessHost : public BrowserChildProcessHost {
public:
explicit NaClProcessHost(const std::wstring& url);
virtual ~NaClProcessHost();
// Do any minimal work that must be done at browser startup.
static void EarlyStartup();
// Initialize the new NaCl process, returning true on success. On success,
// the NaCl process host will assume responsibility for sending the reply
// message. On failure, the reply will not be sent and this is the caller's
// responsibility to avoid hanging the renderer.
bool Launch(ChromeRenderMessageFilter* chrome_render_message_filter,
int socket_count,
IPC::Message* reply_msg);
virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
void OnProcessLaunchedByBroker(base::ProcessHandle handle);
protected:
virtual void OnProcessCrashed(int exit_code) OVERRIDE;
private:
// Internal class that holds the nacl::Handle objecs so that
// nacl_process_host.h doesn't include NaCl headers. Needed since it's
// included by src\content, which can't depend on the NaCl gyp file because it
// depends on chrome.gyp (circular dependency).
struct NaClInternal;
bool LaunchSelLdr();
virtual void OnProcessLaunched() OVERRIDE;
void IrtReady();
void SendStart(base::PlatformFile irt_file);
private:
// The ChromeRenderMessageFilter that requested this NaCl process. We use
// this for sending the reply once the process has started.
scoped_refptr<ChromeRenderMessageFilter> chrome_render_message_filter_;
// The reply message to send. We must always send this message when the
// sub-process either succeeds or fails to unblock the renderer waiting for
// the reply. NULL when there is no reply to send.
IPC::Message* reply_msg_;
// Socket pairs for the NaCl process and renderer.
scoped_ptr<NaClInternal> internal_;
base::WeakPtrFactory<NaClProcessHost> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(NaClProcessHost);
};
#endif // CHROME_BROWSER_NACL_HOST_NACL_PROCESS_HOST_H_
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