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) 5bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#ifndef CONTENT_RENDERER_PEPPER_HOST_VAR_TRACKER_H_ 6bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#define CONTENT_RENDERER_PEPPER_HOST_VAR_TRACKER_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <map> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/compiler_specific.h" 127d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles)#include "base/containers/hash_tables.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/gtest_prod_util.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/linked_ptr.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/ref_counted.h" 16bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#include "content/common/content_export.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/c/pp_instance.h" 182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ppapi/shared_impl/host_resource.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/shared_impl/resource_tracker.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/shared_impl/var_tracker.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct NPObject NPObject; 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace ppapi { 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ArrayBufferVar; 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class NPObjectVar; 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Var; 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3058e6fbe4ee35d65e14b626c557d37565bf8ad179Ben Murdochnamespace content { 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Adds NPObject var tracking to the standard PPAPI VarTracker for use in the 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// renderer. 344311e82a78ceafbe0585f51d4c8a86df9f21aa0dBen Murdochclass HostVarTracker : public ppapi::VarTracker { 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HostVarTracker(); 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~HostVarTracker(); 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Tracks all live NPObjectVar. This is so we can map between instance + 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // NPObject and get the NPObjectVar corresponding to it. This Add/Remove 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // function is called by the NPObjectVar when it is created and 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // destroyed. 434311e82a78ceafbe0585f51d4c8a86df9f21aa0dBen Murdoch void AddNPObjectVar(ppapi::NPObjectVar* object_var); 444311e82a78ceafbe0585f51d4c8a86df9f21aa0dBen Murdoch void RemoveNPObjectVar(ppapi::NPObjectVar* object_var); 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Looks up a previously registered NPObjectVar for the given NPObject and 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // instance. Returns NULL if there is no NPObjectVar corresponding to the 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // given NPObject for the given instance. See AddNPObjectVar above. 494311e82a78ceafbe0585f51d4c8a86df9f21aa0dBen Murdoch ppapi::NPObjectVar* NPObjectVarForNPObject(PP_Instance instance, 504311e82a78ceafbe0585f51d4c8a86df9f21aa0dBen Murdoch NPObject* np_object); 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the number of NPObjectVar's associated with the given instance. 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns 0 if the instance isn't known. 54bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch CONTENT_EXPORT int GetLiveNPObjectVarsForInstance( 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_Instance instance) const; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // VarTracker public implementation. 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void DidDeleteInstance(PP_Instance instance) OVERRIDE; 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual int TrackSharedMemoryHandle(PP_Instance instance, 612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::SharedMemoryHandle file, 622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) uint32 size_in_bytes) OVERRIDE; 632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual bool StopTrackingSharedMemoryHandle(int id, 642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PP_Instance instance, 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::SharedMemoryHandle* handle, 662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) uint32* size_in_bytes) OVERRIDE; 672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // VarTracker private implementation. 704311e82a78ceafbe0585f51d4c8a86df9f21aa0dBen Murdoch virtual ppapi::ArrayBufferVar* CreateArrayBuffer( 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32 size_in_bytes) OVERRIDE; 724311e82a78ceafbe0585f51d4c8a86df9f21aa0dBen Murdoch virtual ppapi::ArrayBufferVar* CreateShmArrayBuffer( 732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) uint32 size_in_bytes, base::SharedMemoryHandle handle) OVERRIDE; 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Clear the reference count of the given object and remove it from 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // live_vars_. 774311e82a78ceafbe0585f51d4c8a86df9f21aa0dBen Murdoch void ForceReleaseNPObject(ppapi::NPObjectVar* object_var); 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 794311e82a78ceafbe0585f51d4c8a86df9f21aa0dBen Murdoch typedef std::map<NPObject*, ppapi::NPObjectVar*> NPObjectToNPObjectVarMap; 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Lists all known NPObjects, first indexed by the corresponding instance, 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // then by the NPObject*. This allows us to look up an NPObjectVar given 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // these two pieces of information. 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The instance map is lazily managed, so we'll add the 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // NPObjectToNPObjectVarMap lazily when the first NPObject var is created, 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // and delete it when it's empty. 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) typedef std::map<PP_Instance, linked_ptr<NPObjectToNPObjectVarMap> > 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) InstanceMap; 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) InstanceMap instance_map_; 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Tracks all shared memory handles used for transmitting array buffers. 932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) struct SharedMemoryMapEntry { 942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PP_Instance instance; 952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::SharedMemoryHandle handle; 962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) uint32 size_in_bytes; 972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) }; 982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) typedef std::map<int, SharedMemoryMapEntry> SharedMemoryMap; 992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SharedMemoryMap shared_memory_map_; 1002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) uint32_t last_shared_memory_map_id_; 1012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(HostVarTracker); 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10558e6fbe4ee35d65e14b626c557d37565bf8ad179Ben Murdoch} // namespace content 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 107bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#endif // CONTENT_RENDERER_PEPPER_HOST_VAR_TRACKER_H_ 108