1 // Copyright (c) 2011 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/scoped_pp_resource.h" 6 7 #include "ppapi/shared_impl/ppapi_globals.h" 8 #include "ppapi/shared_impl/resource.h" 9 #include "ppapi/shared_impl/resource_tracker.h" 10 11 namespace ppapi { 12 13 ScopedPPResource::ScopedPPResource() : id_(0) { 14 } 15 16 ScopedPPResource::ScopedPPResource(PP_Resource resource) : id_(resource) { 17 CallAddRef(); 18 } 19 20 ScopedPPResource::ScopedPPResource(const PassRef&, PP_Resource resource) 21 : id_(resource) { 22 } 23 24 ScopedPPResource::ScopedPPResource(Resource* resource) 25 : id_(resource ? resource->GetReference() : 0) { 26 // GetReference AddRef's for us. 27 } 28 29 ScopedPPResource::ScopedPPResource(const ScopedPPResource& other) 30 : id_(other.id_) { 31 CallAddRef(); 32 } 33 34 ScopedPPResource::~ScopedPPResource() { 35 CallRelease(); 36 } 37 38 ScopedPPResource& ScopedPPResource::operator=(PP_Resource resource) { 39 if (id_ == resource) 40 return *this; // Be careful about self-assignment. 41 CallRelease(); 42 id_ = resource; 43 CallAddRef(); 44 return *this; 45 } 46 47 ScopedPPResource& ScopedPPResource::operator=( 48 const ScopedPPResource& resource) { 49 if (id_ == resource.id_) 50 return *this; // Be careful about self-assignment. 51 CallRelease(); 52 id_ = resource.id_; 53 CallAddRef(); 54 return *this; 55 } 56 57 PP_Resource ScopedPPResource::Release() { 58 // We do NOT call CallRelease, because we want to pass our reference to the 59 // caller. 60 61 PP_Resource ret = id_; 62 id_ = 0; 63 return ret; 64 } 65 66 void ScopedPPResource::CallAddRef() { 67 if (id_) 68 PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(id_); 69 } 70 71 void ScopedPPResource::CallRelease() { 72 if (id_) 73 PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(id_); 74 } 75 76 } // namespace ppapi 77
