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Optimize LZMA literal encoder buffer reuse

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copilot-swe-agent[bot]
2026-06-01 10:56:24 +00:00
committed by GitHub
parent 87a90dbb4f
commit 017d545bc3
3 changed files with 31 additions and 24 deletions
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15
src/SharpCompress/Compressors/LZMA/LzmaEncoder.cs
View File

@@ -223,12 +223,19 @@ internal partial class Encoder : ICoder, ISetCoderProperties, IWriteCoderPropert
_posMask = ((uint)1 << numPosBits) - 1;
_numPrevBits = numPrevBits;
var numStates = (uint)1 << (_numPrevBits + _numPosBits);
if (_models is not null)
var requiredModelLength = checked((int)(numStates * 0x300));
if (_models is null || _models.Length < requiredModelLength)
{
ArrayPool<BitEncoder>.Shared.Return(_models);
if (_models is not null)
{
ArrayPool<BitEncoder>.Shared.Return(_models);
}
_models = ArrayPool<BitEncoder>.Shared.Rent(requiredModelLength);
}
if (_coders is null || _coders.Length != numStates)
{
_coders = new Encoder2[numStates];
}
_models = ArrayPool<BitEncoder>.Shared.Rent(checked((int)(numStates * 0x300)));
_coders = new Encoder2[numStates];
for (uint i = 0; i < numStates; i++)
{
_coders[i].Create(_models, checked((int)(i * 0x300)));

12
src/SharpCompress/packages.lock.json
View File

@@ -286,9 +286,9 @@
"net10.0": {
"Microsoft.NET.ILLink.Tasks": {
"type": "Direct",
"requested": "[10.0.6, )",
"resolved": "10.0.6",
"contentHash": "QKuvS0LWX4fjFqeDkyM7Kqt8P3wYTiPD4nwU+9y59n0sCiG714fxDgbbN82vDnzq89AF/PiHl92TP2C4aFDUQA=="
"requested": "[10.0.8, )",
"resolved": "10.0.8",
"contentHash": "dVbSXGIFNR5nZcv2tOLoWI+a9T4jtFd77IYjuND+QVe360qWgAF7H0WtoopYhRw/+SgpGUTyrkrh+65+ClNnfw=="
},
"Microsoft.NETFramework.ReferenceAssemblies": {
"type": "Direct",
@@ -388,9 +388,9 @@
"net8.0": {
"Microsoft.NET.ILLink.Tasks": {
"type": "Direct",
"requested": "[8.0.26, )",
"resolved": "8.0.26",
"contentHash": "o7/yVssM2r9Wyln2s9edBd5ANZXqdSdBI+g7JqXkyJmXrhs2WsJp25K5yPnYrTgdKBCjKB8bg+O2oew4sgzFaA=="
"requested": "[8.0.27, )",
"resolved": "8.0.27",
"contentHash": "rQi9TxifHRnXP7lVRZH05DxD2/XGbJp12q0ozcbrlBlBnyyzssFTH/2vLhtKWUp2CT1qVscTrcYTFiwTyKPKRg=="
},
"Microsoft.NETFramework.ReferenceAssemblies": {
"type": "Direct",