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1d6adf7432
PR-URL: https://github.com/nodejs/node/pull/32831 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
// Copyright 2020 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef INCLUDE_CPPGC_INTERNALS_H_
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#define INCLUDE_CPPGC_INTERNALS_H_
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#include <stddef.h>
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#include <stdint.h>
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#include "include/v8config.h"
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namespace cppgc {
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namespace internal {
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// Pre-C++17 custom implementation of std::void_t.
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template <typename... Ts>
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struct make_void {
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typedef void type;
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};
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template <typename... Ts>
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using void_t = typename make_void<Ts...>::type;
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// Embedders should not rely on this code!
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// Internal constants to avoid exposing internal types on the API surface.
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namespace api_constants {
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// Offset of the uint16_t bitfield from the payload contaning the
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// in-construction bit. This is subtracted from the payload pointer to get
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// to the right bitfield.
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static constexpr size_t kFullyConstructedBitFieldOffsetFromPayload =
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2 * sizeof(uint16_t);
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// Mask for in-construction bit.
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static constexpr size_t kFullyConstructedBitMask = size_t{1};
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} // namespace api_constants
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} // namespace internal
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} // namespace cppgc
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#endif // INCLUDE_CPPGC_INTERNALS_H_
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