dawn-cmake/include/dawn/wire/Wire.h

// Copyright 2017 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef INCLUDE_DAWN_WIRE_WIRE_H_
#define INCLUDE_DAWN_WIRE_WIRE_H_

#include <cstdint>
#include <limits>

#include "dawn/webgpu.h"
#include "dawn/wire/dawn_wire_export.h"

namespace dawn::wire {

class DAWN_WIRE_EXPORT CommandSerializer {
  public:
    CommandSerializer();
    virtual ~CommandSerializer();
    CommandSerializer(const CommandSerializer& rhs) = delete;
    CommandSerializer& operator=(const CommandSerializer& rhs) = delete;

    // Get space for serializing commands.
    // GetCmdSpace will never be called with a value larger than
    // what GetMaximumAllocationSize returns. Return nullptr to indicate
    // a fatal error.
    virtual void* GetCmdSpace(size_t size) = 0;
    virtual bool Flush() = 0;
    virtual size_t GetMaximumAllocationSize() const = 0;
    virtual void OnSerializeError();
};

class DAWN_WIRE_EXPORT CommandHandler {
  public:
    CommandHandler();
    virtual ~CommandHandler();
    CommandHandler(const CommandHandler& rhs) = delete;
    CommandHandler& operator=(const CommandHandler& rhs) = delete;

    virtual const volatile char* HandleCommands(const volatile char* commands, size_t size) = 0;
};

}  // namespace dawn::wire

// TODO(dawn:824): Remove once the deprecation period is passed.
namespace dawn_wire = dawn::wire;

#endif  // INCLUDE_DAWN_WIRE_WIRE_H_