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cat <<EOF
${int} c = raw_${atomic}_read(v);
do {
if (unlikely(c > 0))
return false;
} while (!raw_${atomic}_try_cmpxchg(v, &c, c - 1));
return true;
EOF
在山腰間飄逸的紅雨 隨著北風凋零 我輕輕搖曳風鈴
cat <<EOF
${int} c = raw_${atomic}_read(v);
do {
if (unlikely(c > 0))
return false;
} while (!raw_${atomic}_try_cmpxchg(v, &c, c - 1));
return true;
EOF