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#pragma once
#include <util/system/spinlock.h>
namespace NYT::NThreading {
////////////////////////////////////////////////////////////////////////////////
//! Wraps TSpinLock and additionally acquires a global read lock preventing
//! concurrent forks from happening.
class TForkAwareSpinLock
{
public:
TForkAwareSpinLock() = default;
TForkAwareSpinLock(const TForkAwareSpinLock&) = delete;
TForkAwareSpinLock& operator =(const TForkAwareSpinLock&) = delete;
void Acquire() noexcept;
void Release() noexcept;
bool IsLocked() noexcept;
using TAtForkHandler = void(*)(void*);
static void AtFork(
void* cookie,
TAtForkHandler prepare,
TAtForkHandler parent,
TAtForkHandler child);
private:
TSpinLock SpinLock_;
};
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT::NThreading
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