4f0c365e05
Also mostly banish it from other headers, and shuffle standard header includes to minimize cross-contamination between headers.
64 lines
1.3 KiB
C++
64 lines
1.3 KiB
C++
#pragma once
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#ifdef __MINGW32__
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# include <cstddef>
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class ThreadLocalCommon
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{
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ThreadLocalCommon(const ThreadLocalCommon &other) = delete;
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ThreadLocalCommon &operator =(const ThreadLocalCommon &other) = delete;
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protected:
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size_t size;
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void (*ctor)(void *);
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void (*dtor)(void *);
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size_t padding;
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void *Get() const;
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public:
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ThreadLocalCommon() = default;
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static constexpr size_t Alignment = 0x20;
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};
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// * If this fails, add or remove padding fields, possibly change Alignment to a larger power of 2.
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static_assert(sizeof(ThreadLocalCommon) == ThreadLocalCommon::Alignment, "fix me");
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template<class Type>
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class ThreadLocal : public ThreadLocalCommon
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{
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static void Ctor(void *type)
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{
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new(type) Type();
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}
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static void Dtor(void *type)
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{
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reinterpret_cast<Type *>(type)->~Type();
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}
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public:
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ThreadLocal()
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{
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// * If this fails, you're out of luck.
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static_assert(sizeof(ThreadLocal<Type>) == sizeof(ThreadLocalCommon), "fix me");
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size = sizeof(Type);
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ctor = Ctor;
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dtor = Dtor;
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}
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Type *operator &() const
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{
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return reinterpret_cast<Type *>(Get());
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}
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operator Type &() const
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{
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return *(this->operator &());
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}
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};
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# define THREAD_LOCAL(Type, tl) const ThreadLocal<Type> tl __attribute__((section("tpt_tls"), aligned(ThreadLocalCommon::Alignment)))
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#else
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# define THREAD_LOCAL(Type, tl) thread_local Type tl
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#endif
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