mirror of
https://github.com/JakeHillion/object-introspection.git
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68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef INCLUDED_OI_OI_H
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#define INCLUDED_OI_OI_H 1
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#include <oi/IntrospectionResult.h>
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#include <oi/types/dy.h>
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#include <cstdint>
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#include <optional>
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#include <stdexcept>
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#include <vector>
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namespace oi {
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enum class Feature {
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ChaseRawPointers,
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CaptureThriftIsset,
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GenJitDebug,
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};
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#ifdef OIL_AOT_COMPILATION
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template <class T, Feature... Fs>
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IntrospectionResult __attribute__((weak)) introspectImpl(const T& objectAddr);
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template <typename T, Feature... Fs>
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__attribute__((noinline)) IntrospectionResult introspect(const T& objectAddr) {
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if (!introspectImpl<T, Fs...>)
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throw std::logic_error(
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"OIL is expecting AoT compilation but it doesn't appear to have run.");
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return introspectImpl<T, Fs...>(objectAddr);
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}
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template <typename T, Feature... Fs>
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std::optional<IntrospectionResult> tryIntrospect(const T& objectAddr) {
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if (!introspectImpl<T, Fs...>)
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return std::nullopt;
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// This checks twice but is necessary for compile time as it currently
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// depends on the presence of the strong symbol.
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return introspect(objectAddr);
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}
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#endif
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} // namespace oi
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#ifndef OIL_AOT_COMPILATION
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#include "oi/oi-jit.h"
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#endif
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#endif
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