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