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#pragma once
#include "public.h"
#include <util/system/spinlock.h>
#include <util/system/src_location.h>
namespace NYT::NThreading {
////////////////////////////////////////////////////////////////////////////////
//! Wraps TSpinLock and additionally acquires a global fork lock (in read mode)
//! preventing concurrent forks from happening.
class TForkAwareSpinLock
{
public:
TForkAwareSpinLock(const TForkAwareSpinLock&) = delete;
TForkAwareSpinLock& operator =(const TForkAwareSpinLock&) = delete;
constexpr TForkAwareSpinLock() = default;
// TODO(babenko): make use of location.
explicit constexpr TForkAwareSpinLock(const ::TSourceLocation& /*location*/)
{ }
void Acquire() noexcept;
bool TryAcquire() noexcept;
void Release() noexcept;
bool IsLocked() const noexcept;
private:
TSpinLock SpinLock_;
};
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT::NThreading
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