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path: root/scripts/atomic/fallbacks/dec_if_positive
blob: f65c11b4b85bd85588c9acdbf814df5f1f0bed6e (plain)
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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