text: // 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 CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_HOST_H_
  #define CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_HOST_H_
  
  #include "base/process_util.h"
  #include "base/string16.h"
  #include "build/build_config.h"
  #include "content/common/content_export.h"
  #include "content/public/common/process_type.h"
  #include "ipc/ipc_sender.h"
  
  class CommandLine;
  
  namespace base {
  class FilePath;
  }
  
  namespace content {
  
  class BrowserChildProcessHostDelegate;
  class ChildProcessHost;
  struct ChildProcessData;
  
  // This represents child processes of the browser process, i.e. plugins. They
  // will get terminated at browser shutdown.
  class CONTENT_EXPORT BrowserChildProcessHost : public IPC::Sender {
   public:
    // Used to create a child process host. The delegate must outlive this object.
    static BrowserChildProcessHost* Create(
        ProcessType type,
        BrowserChildProcessHostDelegate* delegate);
  
    virtual ~BrowserChildProcessHost() {}
  
    // Derived classes call this to launch the child process asynchronously.
    // Takes ownership of |cmd_line|.
    virtual void Launch(
  #if defined(OS_WIN)
        const base::FilePath& exposed_dir,
  #elif defined(OS_POSIX)
        bool use_zygote,
        const base::EnvironmentVector& environ,
  #endif
        CommandLine* cmd_line) = 0;
  
    virtual const ChildProcessData& GetData() const = 0;
  
    // Returns the ChildProcessHost object used by this object.
    virtual ChildProcessHost* GetHost() const = 0;
  
    // Returns the termination status of a child.  |exit_code| is the
    // status returned when the process exited (for posix, as returned
    // from waitpid(), for Windows, as returned from
    // GetExitCodeProcess()).  |exit_code| may be NULL.
    virtual base::TerminationStatus GetTerminationStatus(int* exit_code) = 0;
  
    // Sets the user-visible name of the process.
    virtual void SetName(const string16& name) = 0;
  
    // Set the handle of the process. BrowserChildProcessHost will do this when
    // the Launch method is used to start the process. However if the owner
    // of this object doesn't call Launch and starts the process in another way,
    // they need to call this method so that the process handle is associated with
    // this object.
    virtual void SetHandle(base::ProcessHandle handle) = 0;
  
  #if defined(OS_MACOSX) && !defined(OS_IOS)
    // Returns a PortProvider used to get process metrics for child processes.
    static base::ProcessMetrics::PortProvider* GetPortProvider();
  #endif
  };
  
  };  // namespace content
  
  #endif  // CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_HOST_H_
  