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SpinLock fix

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vsadov 2022-09-19 15:12:21 -07:00
parent f133b36c8e
commit 147ed98e4a
1 changed files with 5 additions and 6 deletions
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11
src/coreclr/gc/satori/SatoriLock.h
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@ -73,7 +73,7 @@ public:
{
int localBackoff = m_backoff;
while (VolatileLoadWithoutBarrier(&m_backoff) ||
CompareExchangeNf(&m_backoff, localBackoff / 4 + 1, 0) != 0)
!CompareExchangeNf(&m_backoff, localBackoff / 4 + 1, 0))
{
localBackoff = Backoff(localBackoff);
}
@ -108,17 +108,16 @@ private:
return (backoff * 2 + 1) & 0x3FFF;
}
static int CompareExchangeNf(int volatile* destination, int exchange, int comparand)
static bool CompareExchangeNf(int volatile* destination, int exchange, int comparand)
{
#ifdef _MSC_VER
#if defined(TARGET_AMD64)
return _InterlockedCompareExchange((long*)destination, exchange, comparand);
return _InterlockedCompareExchange((long*)destination, exchange, comparand) == comparand;
#else
return _InterlockedCompareExchange_nf((long*)destination, exchange, comparand);
return _InterlockedCompareExchange_nf((long*)destination, exchange, comparand) == comparand;
#endif
#else
__atomic_compare_exchange_n(destination, &comparand, exchange, true, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
return comparand;
return __atomic_compare_exchange_n(destination, &comparand, exchange, true, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
#endif
}
};