Files
mariadb-columnstore-engine/utils/common/spinlock.h
Patrick LeBlanc 0d26dc447c Squash merge of the threaded UM hash table construction feature.
Conflicts:
	oam/etc/Columnstore.xml.singleserver
2019-11-21 14:41:00 -05:00

28 lines
525 B
C++

#pragma once
#include <atomic>
namespace utils
{
inline void getSpinlock(std::atomic<bool> &lock)
{
bool _false = false;
while (!lock.compare_exchange_weak(_false, true, std::memory_order_acquire))
_false = false;
}
inline bool trySpinlock(std::atomic<bool> &lock)
{
bool _false = false;
bool ret = lock.compare_exchange_weak(_false, true, std::memory_order_acquire);
return ret;
}
inline void releaseSpinlock(std::atomic<bool> &lock)
{
lock.store(false, std::memory_order_release);
}
}