fb7304503f
This patch implements `vm.measureMemory()` with the new `v8::Isolate::MeasureMemory()` API to measure per-context memory usage. This should be experimental, since detailed memory measurement requires further integration with the V8 API that should be available in a future V8 update. PR-URL: https://github.com/nodejs/node/pull/31824 Refs: https://github.com/ulan/performance-measure-memory Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Denys Otrishko <shishugi@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
71 lines
2.1 KiB
JavaScript
71 lines
2.1 KiB
JavaScript
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const vm = require('vm');
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common.expectWarning('ExperimentalWarning',
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'vm.measureMemory is an experimental feature. ' +
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'This feature could change at any time');
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// The formats could change when V8 is updated, then the tests should be
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// updated accordingly.
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function assertSummaryShape(result) {
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assert.strictEqual(typeof result, 'object');
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assert.strictEqual(typeof result.total, 'object');
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assert.strictEqual(typeof result.total.jsMemoryEstimate, 'number');
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assert(Array.isArray(result.total.jsMemoryRange));
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assert.strictEqual(typeof result.total.jsMemoryRange[0], 'number');
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assert.strictEqual(typeof result.total.jsMemoryRange[1], 'number');
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}
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function assertDetailedShape(result) {
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// For now, the detailed shape is the same as the summary shape. This
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// should change in future versions of V8.
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return assertSummaryShape(result);
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}
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// Test measuring memory of the current context
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{
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vm.measureMemory()
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.then(assertSummaryShape);
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vm.measureMemory({})
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.then(assertSummaryShape);
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vm.measureMemory({ mode: 'summary' })
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.then(assertSummaryShape);
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vm.measureMemory({ mode: 'detailed' })
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.then(assertDetailedShape);
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assert.throws(() => vm.measureMemory(null), {
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code: 'ERR_INVALID_ARG_TYPE'
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});
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assert.throws(() => vm.measureMemory('summary'), {
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code: 'ERR_INVALID_ARG_TYPE'
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});
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assert.throws(() => vm.measureMemory({ mode: 'random' }), {
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code: 'ERR_INVALID_ARG_VALUE'
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});
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}
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// Test measuring memory of the sandbox
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{
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const context = vm.createContext();
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vm.measureMemory({ context })
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.then(assertSummaryShape);
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vm.measureMemory({ mode: 'summary', context },)
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.then(assertSummaryShape);
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vm.measureMemory({ mode: 'detailed', context })
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.then(assertDetailedShape);
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assert.throws(() => vm.measureMemory({ mode: 'summary', context: null }), {
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code: 'ERR_INVALID_ARG_TYPE'
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});
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assert.throws(() => vm.measureMemory({ mode: 'summary', context: {} }), {
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code: 'ERR_INVALID_ARG_TYPE'
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});
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}
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