ppapi/shared_impl/resource.cc

   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 #include "ppapi/shared_impl/resource.h"
   6
   7 #include "base/logging.h"
   8 #include "ppapi/shared_impl/resource_tracker.h"
   9 #include "ppapi/shared_impl/ppapi_globals.h"
  10
  11 namespace ppapi {
  12
  13 Resource::Resource(ResourceObjectType type, PP_Instance instance)
  14     : host_resource_(HostResource::MakeInstanceOnly(instance)) {
  15   // The instance should be valid (nonzero).
  16   DCHECK(instance);
  17
  18   pp_resource_ = PpapiGlobals::Get()->GetResourceTracker()->AddResource(this);
  19   if (type == OBJECT_IS_IMPL) {
  20     // For the in-process case, the host resource and resource are the same.
  21     //
  22     // Note that we need to have set the instance above (in the initializer
  23     // list) since AddResource needs our instance() getter to work, and that
  24     // goes through the host resource. When we get the "real" resource ID,
  25     // we re-set the host_resource.
  26     host_resource_.SetHostResource(instance, pp_resource_);
  27   }
  28 }
  29
  30 Resource::Resource(ResourceObjectType type, const HostResource& host_resource)
  31     : host_resource_(host_resource) {
  32   pp_resource_ = PpapiGlobals::Get()->GetResourceTracker()->AddResource(this);
  33   if (type == OBJECT_IS_IMPL) {
  34     // When using this constructor for the implementation, the resource ID
  35     // should not have been passed in.
  36     DCHECK(host_resource_.host_resource() == 0);
  37
  38     // See previous constructor.
  39     host_resource_.SetHostResource(host_resource.instance(), pp_resource_);
  40   }
  41 }
  42
  43 Resource::Resource(Untracked) {
  44   pp_resource_ = PpapiGlobals::Get()->GetResourceTracker()->AddResource(this);
  45 }
  46
  47 Resource::~Resource() { RemoveFromResourceTracker(); }
  48
  49 PP_Resource Resource::GetReference() {
  50   PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(pp_resource());
  51   return pp_resource();
  52 }
  53
  54 void Resource::NotifyLastPluginRefWasDeleted() {
  55   // Notify subclasses.
  56   LastPluginRefWasDeleted();
  57 }
  58
  59 void Resource::NotifyInstanceWasDeleted() {
  60   // Hold a reference, because InstanceWasDeleted() may cause us to be
  61   // destroyed.
  62   scoped_refptr<Resource> keep_alive(this);
  63
  64   // Notify subclasses.
  65   InstanceWasDeleted();
  66
  67   host_resource_ = HostResource();
  68 }
  69
  70 void Resource::OnReplyReceived(const proxy::ResourceMessageReplyParams& params,
  71                                const IPC::Message& msg) {
  72   NOTREACHED();
  73 }
  74
  75 void Resource::Log(PP_LogLevel level, const std::string& message) {
  76   PpapiGlobals::Get()->LogWithSource(
  77       pp_instance(), level, std::string(), message);
  78 }
  79
  80 void Resource::RemoveFromResourceTracker() {
  81   PpapiGlobals::Get()->GetResourceTracker()->RemoveResource(this);
  82 }
  83
  84 #define DEFINE_TYPE_GETTER(RESOURCE) \
  85   thunk::RESOURCE* Resource::As##RESOURCE() { return NULL; }
  86 FOR_ALL_PPAPI_RESOURCE_APIS(DEFINE_TYPE_GETTER)
  87 #undef DEFINE_TYPE_GETTER
  88
  89 }  // namespace ppapi