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#ifndef RSEQ_INL_H_
#error "Direct inclusion of this file is not allowed, include rseq.h"
// For the sake of sane code completion.
#include "rseq.h"
#endif
#include <util/system/compiler.h>
namespace NYT::NRseq {
////////////////////////////////////////////////////////////////////////////////
template <class T>
Y_FORCE_INLINE T ReadField(std::ptrdiff_t fieldOffset)
{
auto* threadPointer = static_cast<char*>(__builtin_thread_pointer());
// volatile: the kernel updates the area asynchronously, so the read must not be
// hoisted or cached across loop iterations.
return *reinterpret_cast<volatile const T*>(threadPointer + fieldOffset);
}
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT::NRseq
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