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Matteo Collina
9f04fcd70d
Enable node:ffi by default in builds with FFI support. Keep --experimental-ffi as a compatibility no-op and --no-experimental-ffi as an opt-out. Loading the module still emits an experimental warning. Signed-off-by: Matteo Collina <hello@matteocollina.com> PR-URL: https://github.com/nodejs/node/pull/65475 Reviewed-By: Paolo Insogna <paolo@cowtech.it> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Filip Skokan <panva.ip@gmail.com> Reviewed-By: Chemi Atlow <chemi@atlow.co.il> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Gürgün Dayıoğlu <hey@gurgun.day>
47 lines
1.4 KiB
JavaScript
47 lines
1.4 KiB
JavaScript
'use strict';
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// Measures symbol resolution rather than call throughput. Creating a callable
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// for a fast-eligible signature emits a native trampoline, so this benchmark
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// covers the trampoline allocation path that the call benchmarks never reach.
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//
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// The `fast` variant is eligible for a generated trampoline; `slow` exceeds the
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// x86_64 register budget and falls back, so it resolves without allocating one.
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// Comparing the two isolates trampoline creation cost from the rest of symbol
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// resolution.
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const common = require('../common.js');
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const { DynamicLibrary } = require('node:ffi');
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const { libraryPath, ensureFixtureLibrary } = require('./common.js');
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const bench = common.createBenchmark(main, {
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signature: ['fast', 'slow'],
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n: [1e3],
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});
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ensureFixtureLibrary();
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const signatures = {
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fast: { name: 'add_i32', return: 'i32', arguments: ['i32', 'i32'] },
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slow: {
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name: 'sum_8_i32',
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return: 'i32',
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arguments: ['i32', 'i32', 'i32', 'i32', 'i32', 'i32', 'i32', 'i32'],
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},
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};
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function main({ n, signature }) {
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const { name, ...definition } = signatures[signature];
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const lib = new DynamicLibrary(libraryPath);
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// Warm up one-time initialization (libffi setup, executable memory probe) so
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// it is not attributed to the measured resolutions.
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lib.getFunction(name, definition);
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bench.start();
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for (let i = 0; i < n; ++i)
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lib.getFunction(name, definition);
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bench.end(n);
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lib.close();
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}
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