Messages in this thread | ![/](/images/icornerl.gif) | | Date | Thu, 31 Jul 2003 16:16:57 +0530 | From | Raj Inguva <> | Subject | Re: atomic_set & gcc. atomicity question |
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> #define atomic_set(v,i) (((v)->counter) = (i))
'v' is of type atomic_t which is a structure.
> If we call atomic_set() with constant 2nd argument it's ok - it's a > simple write to var. But what if we do atomic_set(var, var1+var2)?
It will expand to (((var)->counter) = (var1+var2))
'counter' is 'volatile' . - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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