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# include <exec/semaphores.h>
typedef struct SignalSemaphore OFPlainMutex;
#endif
#if defined(OF_HAVE_ATOMIC_OPS)
# import "OFAtomic.h"
typedef volatile int OFSpinlock;
# define OF_SPINCOUNT 10
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static OF_INLINE int
OFSpinlockLock(OFSpinlock *spinlock)
{
#if defined(OF_HAVE_ATOMIC_OPS)
size_t i;
for (i = 0; i < OF_SPINCOUNT; i++)
for (i = 0; i < 10; i++)
if (OFSpinlockTryLock(spinlock) == 0)
return 0;
while (OFSpinlockTryLock(spinlock) == EBUSY)
OFYieldThread();
return 0;
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