8ba4d727a8
This is both valuable as a diagnostic tool and as a way to inform the JS runtime about external allocations. Currently, this is a feature only enabled in the statically linked builds of zstd, so with `--shared-zstd`, we fall back to the non-tracking variant. PR-URL: https://github.com/nodejs/node/pull/61717 Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
49 lines
1.8 KiB
JavaScript
49 lines
1.8 KiB
JavaScript
'use strict';
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// This tests heap snapshot integration of zlib stream.
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const common = require('../common');
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const assert = require('assert');
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const { validateByRetainingPath, validateByRetainingPathFromNodes } = require('../common/heap');
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const zlib = require('zlib');
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// Before zstd stream is created, no ZstdStream should be created.
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{
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const nodes = validateByRetainingPath('Node / ZstdStream', []);
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assert.strictEqual(nodes.length, 0);
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}
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const compress = zlib.createZstdCompress();
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// After zstd stream is created, a ZstdStream should be created.
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{
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const streams = validateByRetainingPath('Node / ZstdStream', []);
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validateByRetainingPathFromNodes(streams, 'Node / ZstdStream', [
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{ node_name: 'ZstdCompress', edge_name: 'native_to_javascript' },
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]);
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const withMemory = validateByRetainingPathFromNodes(streams, 'Node / ZstdStream', [
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{ node_name: 'Node / zlib_memory', edge_name: 'zlib_memory' },
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], true);
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if (process.config.variables.node_shared_zstd === true) {
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assert.strictEqual(withMemory.length, 0);
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} else {
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assert.strictEqual(withMemory.length, 1);
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// Between 1KB and 1MB (measured value was around ~5kB)
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assert.ok(withMemory[0].self_size > 1024);
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assert.ok(withMemory[0].self_size < 1024 * 1024);
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}
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}
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// After zstd stream is written, zlib_memory is significantly larger.
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compress.write('hello world', common.mustCall(() => {
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const streams = validateByRetainingPath('Node / ZstdStream', []);
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const withMemory = validateByRetainingPathFromNodes(streams, 'Node / ZstdStream', [
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{ node_name: 'Node / zlib_memory', edge_name: 'zlib_memory' },
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], true);
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if (process.config.variables.node_shared_zstd === true) {
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assert.strictEqual(withMemory.length, 0);
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} else {
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assert.strictEqual(withMemory.length, 1);
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// More than 1MB
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assert.ok(withMemory[0].self_size > 1024 * 1024);
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}
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}));
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