Index: ppapi/shared_impl/scoped_pp_resource.h |
diff --git a/ppapi/shared_impl/scoped_pp_resource.h b/ppapi/shared_impl/scoped_pp_resource.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..74cb9eb2d8cf853f1f17b4c0922e1a3cad872e2b |
--- /dev/null |
+++ b/ppapi/shared_impl/scoped_pp_resource.h |
@@ -0,0 +1,53 @@ |
+// Copyright (c) 2011 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef PPAPI_SHARED_IMPL_SCOPED_RESOURCE_H_ |
+#define PPAPI_SHARED_IMPL_SCOPED_RESOURCE_H_ |
+ |
+#include "ppapi/c/pp_resource.h" |
+ |
+namespace ppapi { |
+ |
+class Resource; |
+ |
+// This is a version of scoped_refptr but for PP_Resources. |
+class ScopedPPResource { |
+ public: |
+ ScopedPPResource(); |
+ |
+ // Takes one reference to the given resource. |
+ explicit ScopedPPResource(PP_Resource resource); |
+ |
+ // Helper to get the PP_Resource out of the given object and take a reference |
+ // to it. |
+ explicit ScopedPPResource(Resource* resource); |
+ |
+ // Implicit copy constructor allowed. |
+ ScopedPPResource(const ScopedPPResource& other); |
+ |
+ ~ScopedPPResource(); |
+ |
+ ScopedPPResource& operator=(PP_Resource resource); |
+ ScopedPPResource& operator=(const ScopedPPResource& resource); |
+ |
+ // Returns the PP_Resource without affecting the refcounting. |
+ PP_Resource get() const { return id_; } |
+ operator PP_Resource() const { return id_; } |
+ |
+ // Returns the PP_Resource, passing the reference to the caller. This class |
+ // will no longer hold the resource. |
+ PP_Resource Release(); |
+ |
+ private: |
+ // Helpers to addref or release the id_ if it's non-NULL. The id_ value will |
+ // be unchanged. |
+ void CallAddRef(); |
+ void CallRelease(); |
+ |
+ PP_Resource id_; |
+}; |
+ |
+} // namespace ppapi |
+ |
+#endif // PPAPI_SHARED_IMPL_SCOPED_RESOURCE_H_ |