Answer by Peter Cordes for Why atomic store on variable that cross cache-line...
Correct, the store isn't atomic in that case, misaligned atomic operations aren't supported in GNU C.You created a misaligned uint64_t and took its address. That's not safe in general. Packed structs...
View ArticleWhy atomic store on variable that cross cache-line boundaries compiles to...
let's look on the code#include <stdint.h>#pragma pack (push,1)typedef struct test_s{ uint64_t a1; uint64_t a2; uint64_t a3; uint64_t a4; uint64_t a5; uint64_t a6; uint64_t a7; uint8_t b1;...
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