20 lines
608 B
JavaScript
20 lines
608 B
JavaScript
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var crypto = require('crypto')
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if (crypto.randomFillSync) {
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// We reuse buffers with the same size to avoid memory fragmentations
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// for better performance
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var buffers = { }
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module.exports = function (bytes) {
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var buffer = buffers[bytes]
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if (!buffer) {
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// `Buffer.allocUnsafe()` faster because it don’t clean memory.
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// We do not need it, since we will fill memory with new bytes anyway.
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buffer = Buffer.allocUnsafe(bytes)
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if (bytes <= 255) buffers[bytes] = buffer
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}
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return crypto.randomFillSync(buffer)
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}
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} else {
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module.exports = crypto.randomBytes
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}
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