| // 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 NET_THIRD_PARTY_QUIC_CORE_FRAMES_QUIC_INLINED_FRAME_H_ |
| #define NET_THIRD_PARTY_QUIC_CORE_FRAMES_QUIC_INLINED_FRAME_H_ |
| |
| #include "net/third_party/quic/core/quic_types.h" |
| #include "net/third_party/quic/platform/api/quic_export.h" |
| |
| namespace quic { |
| |
| // QuicInlinedFrame is the base class of all frame types that is inlined in the |
| // QuicFrame class. It gurantees all inlined frame types contain a 'type' field |
| // at offset 0, such that QuicFrame.type can get the correct frame type for both |
| // inline and out-of-line frame types. |
| template <typename DerivedT> |
| struct QUIC_EXPORT_PRIVATE QuicInlinedFrame { |
| QuicInlinedFrame(QuicFrameType type) : type(type) { |
| #if !(defined(STARBOARD) && defined(__GNUC__) && !defined(__clang__) && \ |
| __GNUC__ <= 7) |
| // Raspi compiler does not allow none-static type in offsetof, but we should |
| // turn on this check on as many platforms as possible. |
| static_assert(offsetof(DerivedT, type) == 0, |
| "type must be the first field."); |
| #endif |
| static_assert(sizeof(DerivedT) <= 24, |
| "Frames larger than 24 bytes should not be inlined."); |
| } |
| QuicFrameType type; |
| }; |
| |
| } // namespace quic |
| |
| #endif // NET_THIRD_PARTY_QUIC_CORE_FRAMES_QUIC_INLINED_FRAME_H_ |
