Deadlock

<div class="v"><header><b>DEADLOCK CYCLE</b><span id="state"></span></header><main><div class="cycle"><b>A</b><span id="ab"></span><b>B</b><span id="ba"></span></div><div class="note" id="note"></div></main><footer>order locks consistently</footer></div>

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let n=0;function draw(){document.getElementById("ab").textContent=n?"holds L1 → waits L2":"acquire L1";document.getElementById("ba").textContent=n?"holds L2 → waits L1":"acquire L2";document.getElementById("note").textContent=n?"cycle closed: no progress":"opposite lock order";document.getElementById("state").textContent=n?"blocked":"running";n=1-n}draw();setInterval(draw,1400)