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continuous-integration/drone/push Build is passing
For when you want to lock a resource if possible but not get blocked if it is locked by another thread.
28 lines
545 B
C++
28 lines
545 B
C++
#include "thread/Spinlock.h"
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#include "Log.h"
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#include "arch/CPU.h"
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void Spinlock::lock()
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{
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int expected = 0;
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while (!m_lock.compare_exchange_strong(expected, 1))
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{
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expected = 0;
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CPU::pause();
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}
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}
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bool Spinlock::try_lock()
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{
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int expected = 0;
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return m_lock.compare_exchange_strong(expected, 1);
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}
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void Spinlock::unlock()
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{
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int expected = 1;
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if (!m_lock.compare_exchange_strong(expected, 0))
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{
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kwarnln("Spinlock::unlock() called on an unlocked lock with value %d", expected);
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}
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} |