blob: e70d9fdfc3d64b2119f7807ae801695d2352e5ab (
plain)
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if /bin/sh ${ATOMICDIR}/chkdup.sh arch_${atomic}_inc_unless_negative inc_unless_negative
then
cat <<EOF
/**
* arch_${atomic}_inc_unless_negative - Atomic increment if old value is non-negative
* @v: pointer of type ${atomic}_t
*
* Atomically increment @v with full ordering, but only if the original
* value is greater than or equal to zero. Return @true if the increment
* happened and @false otherwise.
*/
EOF
fi
cat <<EOF
static __always_inline bool
arch_${atomic}_inc_unless_negative(${atomic}_t *v)
{
${int} c = arch_${atomic}_read(v);
do {
if (unlikely(c < 0))
return false;
} while (!arch_${atomic}_try_cmpxchg(v, &c, c + 1));
return true;
}
EOF
|
