1cat <<EOF
2static inline ${ret}
3${atomic}_dec_if_positive(${atomic}_t *v)
4{
5 ${int} dec, c = ${atomic}_read(v);
6
7 do {
8 dec = c - 1;
9 if (unlikely(dec < 0))
10 break;
11 } while (!${atomic}_try_cmpxchg(v, &c, dec));
12
13 return dec;
14}
15EOF
16