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84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
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// Copyright 2018 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_FUCHSIA_FIDL_INTERFACE_REQUEST_H_
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#define BASE_FUCHSIA_FIDL_INTERFACE_REQUEST_H_
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#include <lib/zx/channel.h>
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#include "base/base_export.h"
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#include "base/macros.h"
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#include "base/strings/string_piece.h"
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namespace fidl {
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template <typename Interface>
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class InterfaceRequest;
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template <typename Interface>
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class InterfacePtr;
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template <typename Interface>
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class SynchronousInterfacePtr;
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} // namespace fidl
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namespace base {
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namespace fuchsia {
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// A request for a FIDL interface. FidlInterfaceRequest contains interface name
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// and channel handle. Interface consumers create FidlInterfaceRequest when they
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// need to connect to a service. FidlInterfaceRequest is resolved when the
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// channel is passed to the service implementation, e.g. through
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// ComponentContext.
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class BASE_EXPORT FidlInterfaceRequest {
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public:
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template <typename Interface>
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explicit FidlInterfaceRequest(fidl::InterfaceRequest<Interface> request)
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: FidlInterfaceRequest(Interface::Name_, request.TakeChannel()) {}
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// Creates a new request for |Interface| and binds the client end to the
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// |stub|. |stub| can be used immediately after the request is created, even
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// before the request is passed to the service that implements the interface.
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template <typename Interface>
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explicit FidlInterfaceRequest(fidl::InterfacePtr<Interface>* stub)
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: FidlInterfaceRequest(stub->NewRequest()) {}
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template <typename Interface>
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explicit FidlInterfaceRequest(fidl::SynchronousInterfacePtr<Interface>* stub)
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: FidlInterfaceRequest(stub->NewRequest()) {}
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FidlInterfaceRequest(FidlInterfaceRequest&&);
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~FidlInterfaceRequest();
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// Creates an interface request from the specified |channel|. Caller must
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// ensure that the specified |interface_name| is valid for the specified
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// |channel|.
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static FidlInterfaceRequest CreateFromChannelUnsafe(
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const char* interface_name,
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zx::channel channel);
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bool is_valid() const { return interface_name_ && channel_; }
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const char* interface_name() const { return interface_name_; }
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// Extracts the channel handle to be passed to service implementation. The
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// request becomes invalid after this call, i.e. TakeChannel() can be called
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// only once.
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zx::channel TakeChannel();
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private:
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FidlInterfaceRequest(const char* interface_name, zx::channel channel);
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const char* interface_name_;
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zx::channel channel_;
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DISALLOW_COPY_AND_ASSIGN(FidlInterfaceRequest);
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};
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} // namespace fuchsia
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} // namespace base
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#endif // BASE_FUCHSIA_FIDL_INTERFACE_REQUEST_H_
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