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isLockFree method is used to determine whether locks are to be used or not for atomic operations. If given size is one of TypedArray.BYTES_PER_ELEMENT property of integer TypedArray types then it returns true. TypedArray.BYTES_PER_ELEMENT represents the size in bytes of each element of an typed array.
Syntax
Atomics.isLockFree(size)
Parameters
-
size to be checked in bytes.
Return
Returns true if operation is lock free as false.
Example
Following is the code for implementing JavaScript Atomics −
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Atomics Example</title>
<style>
.result {
font-size: 20px;
border: 1px solid black;
}
</style>
</head>
<body onLoad="operate();">
<h1>JavaScript Atomics Properties</h1>
<div class="result"></div>
<p>Atomics.isLockFree(1)</p>
<p>Atomics.isLockFree(3)</p>
<script>
function operate(){
let container = document.querySelector(".result");
// create a SharedArrayBuffer
var buffer = new SharedArrayBuffer(25);
var arr = new Uint8Array(buffer);
// Initialise element at zeroth position of array with 6
arr[0] = 6;
// Int8Array.BYTES_PER_ELEMENT = 1
container.innerHTML = Atomics.isLockFree(Int8Array.BYTES_PER_ELEMENT) + ''<br/>'' + Atomics.isLockFree(3);
}
</script>
</body>
</html>
Output
Verify the result.
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