1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_HOST_H_ 6 #define CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_HOST_H_ 7 8 #include "base/environment.h" 9 #include "base/process/kill.h" 10 #include "base/process/process_handle.h" 11 #include "base/process/process_metrics.h" 12 #include "base/strings/string16.h" 13 #include "build/build_config.h" 14 #include "content/common/content_export.h" 15 #include "content/public/common/process_type.h" 16 #include "ipc/ipc_sender.h" 17 18 namespace base { 19 class CommandLine; 20 class FilePath; 21 } 22 23 namespace content { 24 25 class BrowserChildProcessHostDelegate; 26 class ChildProcessHost; 27 class SandboxedProcessLauncherDelegate; 28 struct ChildProcessData; 29 30 // This represents child processes of the browser process, i.e. plugins. They 31 // will get terminated at browser shutdown. 32 class CONTENT_EXPORT BrowserChildProcessHost : public IPC::Sender { 33 public: 34 // Used to create a child process host. The delegate must outlive this object. 35 // |process_type| needs to be either an enum value from ProcessType or an 36 // embedder-defined value. 37 static BrowserChildProcessHost* Create( 38 int process_type, 39 BrowserChildProcessHostDelegate* delegate); 40 41 virtual ~BrowserChildProcessHost() {} 42 43 // Derived classes call this to launch the child process asynchronously. 44 // Takes ownership of |cmd_line| and |delegate|. 45 virtual void Launch( 46 SandboxedProcessLauncherDelegate* delegate, 47 base::CommandLine* cmd_line) = 0; 48 49 virtual const ChildProcessData& GetData() const = 0; 50 51 // Returns the ChildProcessHost object used by this object. 52 virtual ChildProcessHost* GetHost() const = 0; 53 54 // Returns the termination status of a child. |exit_code| is the 55 // status returned when the process exited (for posix, as returned 56 // from waitpid(), for Windows, as returned from 57 // GetExitCodeProcess()). |exit_code| may be NULL. 58 // |known_dead| indicates that the child is already dead. On Linux, this 59 // information is necessary to retrieve accurate information. See 60 // ChildProcessLauncher::GetChildTerminationStatus() for more details. 61 virtual base::TerminationStatus GetTerminationStatus( 62 bool known_dead, int* exit_code) = 0; 63 64 // Sets the user-visible name of the process. 65 virtual void SetName(const base::string16& name) = 0; 66 67 // Set the handle of the process. BrowserChildProcessHost will do this when 68 // the Launch method is used to start the process. However if the owner 69 // of this object doesn't call Launch and starts the process in another way, 70 // they need to call this method so that the process handle is associated with 71 // this object. 72 virtual void SetHandle(base::ProcessHandle handle) = 0; 73 74 #if defined(OS_MACOSX) && !defined(OS_IOS) 75 // Returns a PortProvider used to get process metrics for child processes. 76 static base::ProcessMetrics::PortProvider* GetPortProvider(); 77 #endif 78 }; 79 80 }; // namespace content 81 82 #endif // CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_HOST_H_ 83