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#pragma once
#include <type_traits>
#ifdef DETECT_THREAD_LOCAL
#include "thread_local_compiler_detection.h"
#endif
#ifdef __APPLE__
# include <TargetConditionals.h>
# include <Availability.h>
# if defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_9_0
# undef MB_COMPILER_CXX_THREAD_LOCAL
# endif
# if defined(__i386__) && defined(TARGET_OS_SIMULATOR)
# undef MB_COMPILER_CXX_THREAD_LOCAL
# endif
#endif
namespace mbgl {
namespace util {
namespace impl {
class ThreadLocalBase {
protected:
ThreadLocalBase();
~ThreadLocalBase();
void* get();
void set(void*);
private:
#ifndef MB_COMPILER_CXX_THREAD_LOCAL
std::aligned_storage_t<sizeof(void*), alignof(void*)> storage;
#endif
};
} // namespace impl
template <class T>
class ThreadLocal : public impl::ThreadLocalBase {
public:
ThreadLocal() = default;
ThreadLocal(T* val) {
set(val);
}
T* get() {
return reinterpret_cast<T*>(impl::ThreadLocalBase::get());
}
void set(T* ptr) {
impl::ThreadLocalBase::set(ptr);
}
};
} // namespace util
} // namespace mbgl
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