summaryrefslogtreecommitdiff
path: root/scripts/atomic/fallbacks/dec_if_positive
blob: c52eacec43c860f2f3ec1c0aaceaa9eb1d410d19 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
cat <<EOF
static inline ${ret}
${atomic}_dec_if_positive(${atomic}_t *v)
{
	${int} dec, c = ${atomic}_read(v);

	do {
		dec = c - 1;
		if (unlikely(dec < 0))
			break;
	} while (!${atomic}_try_cmpxchg(v, &c, dec));

	return dec;
}
EOF