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Fix Arm32 atomics

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This commit is contained in:
Mattia Iavarone
2021-10-21 17:26:49 +02:00
committed by Alexander Shabalin
parent 489c9ae11f
commit 64a0d492b9
2 changed files with 16 additions and 5 deletions
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kotlin-native/runtime/src/main/cpp/Atomic.cpp
+15 -4
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@@ -92,14 +92,25 @@ KInt Kotlin_AtomicInt_get(KRef thiz) {
return getImpl<KInt>(thiz);
}
KLong Kotlin_AtomicLong_addAndGet(KRef thiz, KLong delta) {
return addAndGetImpl(thiz, delta);
}
#if KONAN_NO_64BIT_ATOMIC
static int lock64 = 0;
#endif
KLong Kotlin_AtomicLong_addAndGet(KRef thiz, KLong delta) {
#if KONAN_NO_64BIT_ATOMIC
// Potentially huge performance penalty, but correct.
while (compareAndSwap(&lock64, 0, 1) != 0);
volatile KLong* address = getValueLocation<KLong>(thiz);
KLong old = *address;
KLong newValue = old + delta;
*address = newValue;
compareAndSwap(&lock64, 1, 0);
return newValue;
#else
return addAndGetImpl(thiz, delta);
#endif
}
KLong Kotlin_AtomicLong_compareAndSwap(KRef thiz, KLong expectedValue, KLong newValue) {
#if KONAN_NO_64BIT_ATOMIC
// Potentially huge performance penalty, but correct.