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denoland-deno/tests/testdata/run/heapstats.js
Matt Mastracci f5e46c9bf2
chore: move cli/tests/ -> tests/ (#22369)
This looks like a massive PR, but it's only a move from cli/tests ->
tests, and updates of relative paths for files.

This is the first step towards aggregate all of the integration test
files under tests/, which will lead to a set of integration tests that
can run without the CLI binary being built.

While we could leave these tests under `cli`, it would require us to
keep a more complex directory structure for the various test runners. In
addition, we have a lot of complexity to ignore various test files in
the `cli` project itself (cargo publish exclusion rules, autotests =
false, etc).

And finally, the `tests/` folder will eventually house the `test_ffi`,
`test_napi` and other testing code, reducing the size of the root repo
directory.

For easier review, the extremely large and noisy "move" is in the first
commit (with no changes -- just a move), while the remainder of the
changes to actual files is in the second commit.
2024-02-10 20:22:13 +00:00

37 lines
896 B
JavaScript

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
"use strict";
function allocTest(alloc, allocAssert, deallocAssert) {
// Helper func that GCs then returns memory usage
const sample = () => {
// deno-lint-ignore no-undef
gc();
return Deno.memoryUsage();
};
const delta = (t1, t2) => t2.heapUsed - t1.heapUsed;
// Sample "clean" heap usage
const t1 = sample();
// Alloc
// deno-lint-ignore no-unused-vars
let x = alloc();
const t2 = sample();
allocAssert(delta(t1, t2));
// Free
x = null;
const t3 = sample();
deallocAssert(delta(t2, t3));
}
function main() {
// Large-array test, 1M slot array consumes ~4MB (4B per slot)
allocTest(
() => new Array(1e6),
(delta) => console.log("Allocated:", Math.round(delta / 1e6) + "MB"),
(delta) => console.log("Freed:", Math.round(delta / 1e6) + "MB"),
);
}
main();