mlemanczyk/even-perfect-numbers-scanner
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Pools renamed to FixedCapacityPools. Other fixed capacity collections added. Queues, concurrent queues and standard stacks replaced with fixed capacity stacks. MethodImplOptions.AggressiveInlining and .AggressiveOptimization added to simple methods and getters / setters. Variables optimized in few places.

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mlemanczyk committed 2025-12-11 21:10:19 +01:00
1 parent 547d43de84
commit 260aa19e44
25 files changed
+1372 -1300
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PerfectNumbers.Core/PartialFactorResult.cs
+12 -9
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@@ -1,3 +1,5 @@
using System.Numerics;
namespace PerfectNumbers.Core
{
public sealed class PartialFactorResult
@@ -77,7 +79,7 @@ namespace PerfectNumbers.Core
return;
}
int newSize = sourceCount + 1;
int newSize = (int)BitOperations.RoundUpToPowerOf2((uint)sourceCount + 1U);
ulong[] extendedFactors = sourceFactors.Length >= newSize
? sourceFactors
: ResizeFactors(sourceFactors, sourceCount, newSize);
@@ -87,6 +89,7 @@ namespace PerfectNumbers.Core
? sourceExponents
: ResizeExponents(sourceCount, newSize, sourceExponents);
newSize = sourceCount + 1;
extendedFactors[sourceCount] = prime;
extendedExponents[sourceCount] = 1;
Array.Sort(extendedFactors, extendedExponents, 0, newSize);
@@ -101,24 +104,24 @@ namespace PerfectNumbers.Core
private static int[] ResizeExponents(int sourceCount, int newSize, in int[] sourceExponents)
{
int[] extendedExponents = Pools.ExclusiveIntArray.Rent(newSize);
int[] extendedExponents = FixedCapacityPools.ExclusiveIntArray.Rent(newSize);
Array.Copy(sourceExponents, 0, extendedExponents, 0, sourceCount);
Pools.ExclusiveIntArray.Return(sourceExponents);
FixedCapacityPools.ExclusiveIntArray.Return(sourceExponents);
return extendedExponents;
}
private static ulong[] ResizeFactors(in ulong[] sourceFactors, int sourceCount, int newSize)
{
ulong[] extendedFactors = Pools.ExclusiveUlongArray.Rent(newSize);
ulong[] extendedFactors = FixedCapacityPools.ExclusiveUlongArray.Rent(newSize);
Array.Copy(sourceFactors, 0, extendedFactors, 0, sourceCount);
Pools.ExclusiveUlongArray.Return(sourceFactors);
FixedCapacityPools.ExclusiveUlongArray.Return(sourceFactors);
return extendedFactors;
}
private void InitializeWithPrime(ulong prime)
{
ulong[] factors = Pools.ExclusiveUlongArray.Rent(1);
int[] exponents = Pools.ExclusiveIntArray.Rent(1);
ulong[] factors = FixedCapacityPools.ExclusiveUlongArray.Rent(1);
int[] exponents = FixedCapacityPools.ExclusiveIntArray.Rent(1);
factors[0] = prime;
exponents[0] = 1;
Factors = factors;
@@ -142,8 +145,8 @@ namespace PerfectNumbers.Core
Factors = null;
Exponents = null;
Pools.ExclusiveUlongArray.Return(factors);
Pools.ExclusiveIntArray.Return(exponents);
FixedCapacityPools.ExclusiveUlongArray.Return(factors);
FixedCapacityPools.ExclusiveIntArray.Return(exponents);
}
_next = s_poolHead;