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sdrangel/sdrbase/util/spinlock.h
2016-03-08 04:54:12 +01:00

40 lines
510 B
C++

#ifndef INCLUDE_SPINLOCK_H
#define INCLUDE_SPINLOCK_H
#include <QAtomicInt>
class Spinlock {
public:
void lock()
{
while(!m_atomic.testAndSetAcquire(0, 1)) ;
}
void unlock()
{
while(!m_atomic.testAndSetRelease(1, 0)) ;
}
protected:
QAtomicInt m_atomic;
};
class SpinlockHolder {
public:
SpinlockHolder(Spinlock* spinlock) :
m_spinlock(spinlock)
{
m_spinlock->lock();
}
~SpinlockHolder()
{
m_spinlock->unlock();
}
protected:
Spinlock* m_spinlock;
};
#endif // INCLUDE_SPINLOCK_H