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Fix data race by reordering in _CacheValues

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This commit is contained in:
Oliver Kuckertz 2018-07-22 15:55:58 +02:00 committed by plutoo
parent 2bcede91ba
commit 1eafa1b283
1 changed files with 2 additions and 2 deletions
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4
nx/source/kernel/detect.c
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@ -13,7 +13,7 @@ static Mutex g_Mutex;
static void _CacheValues(void) static void _CacheValues(void)
{ {
if (g_HasCached) if (__atomic_load_n(&g_HasCached, __ATOMIC_SEQ_CST))
return; return;
mutexLock(&g_Mutex); mutexLock(&g_Mutex);
@ -33,7 +33,7 @@ static void _CacheValues(void)
g_IsAbove300 |= g_IsAbove400; g_IsAbove300 |= g_IsAbove400;
g_IsAbove200 |= g_IsAbove300; g_IsAbove200 |= g_IsAbove300;
g_HasCached = true; __atomic_store_n(&g_HasCached, true, __ATOMIC_SEQ_CST);
mutexUnlock(&g_Mutex); mutexUnlock(&g_Mutex);
} }