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// Copyright 2016 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 MOJO_PUBLIC_CPP_BINDINGS_LIB_BINDINGS_SERIALIZATION_CONTEXT_H_
#define MOJO_PUBLIC_CPP_BINDINGS_LIB_BINDINGS_SERIALIZATION_CONTEXT_H_
#include <stddef.h>
#include <memory>
#include <queue>
#include <vector>
#include "base/macros.h"
#include "mojo/public/cpp/bindings/bindings_export.h"
#include "mojo/public/cpp/bindings/lib/bindings_internal.h"
#include "mojo/public/cpp/bindings/scoped_interface_endpoint_handle.h"
#include "mojo/public/cpp/system/handle.h"
namespace mojo {
namespace internal {
// A container for handles during serialization/deserialization.
class MOJO_CPP_BINDINGS_EXPORT SerializedHandleVector {
public:
SerializedHandleVector();
~SerializedHandleVector();
size_t size() const { return handles_.size(); }
// Adds a handle to the handle list and returns its index for encoding.
Handle_Data AddHandle(mojo::Handle handle);
// Takes a handle from the list of serialized handle data.
mojo::Handle TakeHandle(const Handle_Data& encoded_handle);
// Takes a handle from the list of serialized handle data and returns it in
// |*out_handle| as a specific scoped handle type.
template <typename T>
ScopedHandleBase<T> TakeHandleAs(const Handle_Data& encoded_handle) {
return MakeScopedHandle(T(TakeHandle(encoded_handle).value()));
}
// Swaps all owned handles out with another Handle vector.
void Swap(std::vector<mojo::Handle>* other);
private:
// Handles are owned by this object.
std::vector<mojo::Handle> handles_;
DISALLOW_COPY_AND_ASSIGN(SerializedHandleVector);
};
// Context information for serialization/deserialization routines.
struct MOJO_CPP_BINDINGS_EXPORT SerializationContext {
SerializationContext();
~SerializationContext();
// Opaque context pointers returned by StringTraits::SetUpContext().
std::unique_ptr<std::queue<void*>> custom_contexts;
// Stashes handles encoded in a message by index.
SerializedHandleVector handles;
// The number of ScopedInterfaceEndpointHandles that need to be serialized.
// It is calculated by PrepareToSerialize().
uint32_t associated_endpoint_count = 0;
// Stashes ScopedInterfaceEndpointHandles encoded in a message by index.
std::vector<ScopedInterfaceEndpointHandle> associated_endpoint_handles;
};
} // namespace internal
} // namespace mojo
#endif // MOJO_PUBLIC_CPP_BINDINGS_LIB_BINDINGS_SERIALIZATION_CONTEXT_H_
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