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      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
     90