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9d7cd9b864
PR-URL: https://github.com/nodejs/node/pull/54077 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
39 lines
1.0 KiB
C++
39 lines
1.0 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 V8_TEST_COMMON_FLAG_UTILS_H
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#define V8_TEST_COMMON_FLAG_UTILS_H
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#include "src/base/macros.h"
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#include "src/flags/flags.h"
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namespace v8 {
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namespace internal {
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template <typename T>
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class V8_NODISCARD FlagScope {
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public:
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FlagScope(FlagValue<T>* flag, T new_value)
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: flag_(flag), previous_value_(*flag) {
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*flag = new_value;
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}
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~FlagScope() { *flag_ = previous_value_; }
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private:
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FlagValue<T>* flag_;
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T previous_value_;
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};
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} // namespace internal
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} // namespace v8
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#define FLAG_VALUE_SCOPE(flag, value) \
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::v8::internal::FlagScope< \
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typename decltype(::v8::internal::v8_flags.flag)::underlying_type> \
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UNIQUE_IDENTIFIER(__scope_##flag)(&::v8::internal::v8_flags.flag, value)
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#define FLAG_SCOPE(flag) FLAG_VALUE_SCOPE(flag, true)
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#endif // V8_TEST_COMMON_FLAG_UTILS_H
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