| 1 | var crypto = require('crypto')
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| 2 |
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| 3 | if (crypto.randomFillSync) {
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| 4 | // We reuse buffers with the same size to avoid memory fragmentations
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| 5 | // for better performance
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| 6 | var buffers = { }
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| 7 | module.exports = function (bytes) {
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| 8 | var buffer = buffers[bytes]
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| 9 | if (!buffer) {
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| 10 | // `Buffer.allocUnsafe()` faster because it don’t clean memory.
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| 11 | // We do not need it, since we will fill memory with new bytes anyway.
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| 12 | buffer = Buffer.allocUnsafe(bytes)
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| 13 | if (bytes <= 255) buffers[bytes] = buffer
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| 14 | }
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| 15 | return crypto.randomFillSync(buffer)
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| 16 | }
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| 17 | } else {
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| 18 | module.exports = crypto.randomBytes
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| 19 | }
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