spinlock.cpp

 
// UFO
#include <ufo/utility/spinlock.hpp>
 
// STL
#include <atomic>
 
void ufo::Spinlock::lock() noexcept
{
    while (flag_.test_and_set(std::memory_order_acquire)) {
        flag_.wait(true, std::memory_order_relaxed);
    }
}
 
bool ufo::Spinlock::try_lock() noexcept
{
    return !flag_.test_and_set(std::memory_order_acquire);
}
 
void ufo::Spinlock::unlock() noexcept
{
    flag_.clear(std::memory_order_release);
    flag_.notify_one();
}