blob: 2ab92ed3e18dd37f9adcdda97f1cc98a7257b66b [file] [log] [blame]
// Copyright 2017 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.
#include <cstdint>
#include "quiche/common/platform/api/quiche_export.h"
namespace spdy {
class QUICHE_EXPORT ZeroCopyOutputBuffer {
virtual ~ZeroCopyOutputBuffer() {}
// Returns the next available segment of memory to write. Will always return
// the same segment until AdvanceWritePtr is called.
virtual void Next(char** data, int* size) = 0;
// After writing to a buffer returned from Next(), the caller should call
// this method to indicate how many bytes were written.
virtual void AdvanceWritePtr(int64_t count) = 0;
// Returns the available capacity of the buffer.
virtual uint64_t BytesFree() const = 0;
} // namespace spdy