render_process_host.h revision eb525c5499e34cc9c4b825d6d9e75bb07cc06ace
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/id_map.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/process.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/process_util.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/common/content_export.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_channel_proxy.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_sender.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/native_widget_types.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/surface/transport_dib.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class GURL; 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct ViewMsg_SwapOut_Params; 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace content { 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class BrowserContext; 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class RenderWidgetHost; 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class StoragePartition; 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace base { 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class TimeDelta; 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace content { 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Interface that represents the browser side of the browser <-> renderer 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// communication channel. There will generally be one RenderProcessHost per 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// renderer process. 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class CONTENT_EXPORT RenderProcessHost : public IPC::Sender, 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public IPC::Listener { 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) typedef IDMap<RenderProcessHost>::iterator iterator; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Details for RENDERER_PROCESS_CLOSED notifications. 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct RendererClosedDetails { 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RendererClosedDetails(base::ProcessHandle handle, 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TerminationStatus status, 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int exit_code) { 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) this->handle = handle; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) this->status = status; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) this->exit_code = exit_code; 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::ProcessHandle handle; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TerminationStatus status; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int exit_code; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~RenderProcessHost() {} 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Initialize the new renderer process, returning true on success. This must 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // be called once before the object can be used, but can be called after 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // that with no effect. Therefore, if the caller isn't sure about whether 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the process has been created, it should just call Init(). 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool Init() = 0; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Gets the next available routing id. 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual int GetNextRoutingID() = 0; 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 66eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch // These methods add or remove listener for a specific message routing ID. 67eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch // Used for refcounting, each holder of this object must AddRoute and 68eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch // RemoveRoute. This object should be allocated on the heap; when no 69eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch // listeners own it any more, it will delete itself. 70eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch virtual void AddRoute(int32 routing_id, IPC::Listener* listener) = 0; 71eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch virtual void RemoveRoute(int32 routing_id) = 0; 72eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to wait for the next UpdateRect message for the specified render 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // widget. Returns true if successful, and the msg out-param will contain a 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // copy of the received UpdateRect message. 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool WaitForBackingStoreMsg(int render_widget_id, 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::TimeDelta& max_delay, 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC::Message* msg) = 0; 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called when a received message cannot be decoded. 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void ReceivedBadMessage() = 0; 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Track the count of visible widgets. Called by listeners to register and 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // unregister visibility. 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void WidgetRestored() = 0; 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void WidgetHidden() = 0; 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual int VisibleWidgetCount() const = 0; 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Indicates whether the current RenderProcessHost associated with a guest 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // renderer process. 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool IsGuest() const = 0; 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the storage partition associated with this process. 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(nasko): Remove this function from the public API once 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // URLRequestContextGetter's creation is moved into StoragePartition. 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // http://crbug.com/158595 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual StoragePartition* GetStoragePartition() const = 0; 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Try to shutdown the associated renderer process as fast as possible. 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If this renderer has any RenderViews with unload handlers, then this 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // function does nothing. The current implementation uses TerminateProcess. 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns True if it was able to do fast shutdown. 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool FastShutdownIfPossible() = 0; 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if fast shutdown was started for the renderer. 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool FastShutdownStarted() const = 0; 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Dump the child process' handle table before shutting down. 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void DumpHandles() = 0; 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the process object associated with the child process. In certain 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // tests or single-process mode, this will actually represent the current 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // process. 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // NOTE: this is not necessarily valid immediately after calling Init, as 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Init starts the process asynchronously. It's guaranteed to be valid after 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the first IPC arrives. 1192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual base::ProcessHandle GetHandle() const = 0; 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Transport DIB functions --------------------------------------------------- 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Return the TransportDIB for the given id. On Linux, this can involve 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // mapping shared memory. On Mac, the shared memory is created in the browser 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // process and the cached metadata is returned. On Windows, this involves 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // duplicating the handle from the remote process. The RenderProcessHost 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // still owns the returned DIB. 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual TransportDIB* GetTransportDIB(TransportDIB::Id dib_id) = 0; 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 130b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) // Return the TransportDIB for the given id. In contrast to GetTransportDIB, 131b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) // the caller owns the resulting TransportDIB. 132b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) virtual TransportDIB* MapTransportDIB(TransportDIB::Id dib_id) = 0; 133b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the user browser context associated with this renderer process. 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual content::BrowserContext* GetBrowserContext() const = 0; 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns whether this process is using the same StoragePartition as 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |partition|. 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool InSameStoragePartition(StoragePartition* partition) const = 0; 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the unique ID for this child process. This can be used later in 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // a call to FromID() to get back to this object (this is used to avoid 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // sending non-threadsafe pointers to other threads). 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This ID will be unique for all child processes, including workers, plugins, 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // etc. 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual int GetID() const = 0; 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true iff channel_ has been set to non-NULL. Use this for checking 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // if there is connection or not. Virtual for mocking out for tests. 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool HasConnection() const = 0; 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Call this to allow queueing of IPC messages that are sent before the 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // process is launched. 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void EnableSendQueue() = 0; 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the renderer channel. 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual IPC::ChannelProxy* GetChannel() = 0; 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Try to shutdown the associated render process as fast as possible 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool FastShutdownForPageCount(size_t count) = 0; 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(ananta) 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Revisit whether the virtual functions declared from here on need to be 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // part of the interface. 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void SetIgnoreInputEvents(bool ignore_input_events) = 0; 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool IgnoreInputEvents() const = 0; 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Schedules the host for deletion and removes it from the all_hosts list. 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void Cleanup() = 0; 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Track the count of pending views that are being swapped back in. Called 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // by listeners to register and unregister pending views to prevent the 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // process from exiting. 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void AddPendingView() = 0; 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void RemovePendingView() = 0; 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Sets a flag indicating that the process can be abnormally terminated. 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void SetSuddenTerminationAllowed(bool allowed) = 0; 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if the process can be abnormally terminated. 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool SuddenTerminationAllowed() const = 0; 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns how long the child has been idle. The definition of idle 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // depends on when a derived class calls mark_child_process_activity_time(). 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This is a rough indicator and its resolution should not be better than 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 10 milliseconds. 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual base::TimeDelta GetChildProcessIdleTime() const = 0; 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Signals that a compositing surface has been updated after a lost context 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // event, so that we can process requests from the renderer to create contexts 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // with that surface. 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void SurfaceUpdated(int32 surface_id) = 0; 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to resume the requests for a view created through window.open that 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // were initially blocked. 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void ResumeRequestsForView(int route_id) = 0; 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Static management functions ----------------------------------------------- 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Flag to run the renderer in process. This is primarily 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // for debugging purposes. When running "in process", the 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // browser maintains a single RenderProcessHost which communicates 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to a RenderProcess which is instantiated in the same process 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // with the Browser. All IPC between the Browser and the 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Renderer is the same, it's just not crossing a process boundary. 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool run_renderer_in_process(); 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This also calls out to ContentBrowserClient::GetApplicationLocale and 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // modifies the current process' command line. 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static void SetRunRendererInProcess(bool value); 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Allows iteration over all the RenderProcessHosts in the browser. Note 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // that each host may not be active, and therefore may have NULL channels. 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static iterator AllHostsIterator(); 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the RenderProcessHost given its ID. Returns NULL if the ID does 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // not correspond to a live RenderProcessHost. 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static RenderProcessHost* FromID(int render_process_id); 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2217d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // Returns whether the process-per-site model is in use (globally or just for 2227d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // the current site), in which case we should ensure there is only one 2237d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // RenderProcessHost per site for the entire browser context. 2247d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) static bool ShouldUseProcessPerSite(content::BrowserContext* browser_context, 2257d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) const GURL& url); 2267d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if the caller should attempt to use an existing 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // RenderProcessHost rather than creating a new one. 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool ShouldTryToUseExistingProcessHost( 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) content::BrowserContext* browser_context, const GURL& site_url); 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Get an existing RenderProcessHost associated with the given browser 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // context, if possible. The renderer process is chosen randomly from 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // suitable renderers that share the same context and type (determined by the 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // site url). 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns NULL if no suitable renderer process is available, in which case 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the caller is free to create a new renderer. 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static RenderProcessHost* GetExistingProcessHost( 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) content::BrowserContext* browser_context, const GURL& site_url); 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Overrides the default heuristic for limiting the max renderer process 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // count. This is useful for unit testing process limit behaviors. It is 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // also used to allow a command line parameter to configure the max number of 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // renderer processes and should only be called once during startup. 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // A value of zero means to use the default heuristic. 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static void SetMaxRendererProcessCount(size_t count); 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the current max number of renderer processes used by the content 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // module. 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static size_t GetMaxRendererProcessCount(); 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace content. 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_H_ 256