Linux-6.18.2/scripts/atomic/fallbacks/dec_if_positive
2025-12-23 20:06:59 +08:00

12 lines
176 B
Plaintext
Executable File

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