|  | // Copyright (c) 2018 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 QUICHE_QUIC_PLATFORM_API_QUIC_IOVEC_H_ | 
|  | #define QUICHE_QUIC_PLATFORM_API_QUIC_IOVEC_H_ | 
|  |  | 
|  | #include <cstddef> | 
|  | #include <type_traits> | 
|  |  | 
|  | #include "net/quic/platform/impl/quic_iovec_impl.h" | 
|  |  | 
|  | namespace quic { | 
|  |  | 
|  | // The impl header has to export struct iovec, or a POSIX-compatible polyfill. | 
|  | // Below, we mostly assert that what we have is appropriate. | 
|  | static_assert(std::is_standard_layout<struct iovec>::value, | 
|  | "iovec has to be a standard-layout struct"); | 
|  |  | 
|  | static_assert(offsetof(struct iovec, iov_base) < sizeof(struct iovec), | 
|  | "iovec has to have iov_base"); | 
|  | static_assert(offsetof(struct iovec, iov_len) < sizeof(struct iovec), | 
|  | "iovec has to have iov_len"); | 
|  |  | 
|  | }  // namespace quic | 
|  |  | 
|  | #endif  // QUICHE_QUIC_PLATFORM_API_QUIC_IOVEC_H_ |