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Comment unreachable configuration guards in by-divisor testers

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Marek Lemańczyk committed 2025-10-13 20:41:14 +02:00
1 parent b0ba6401ca
commit f2eb6580c4
2 files changed
+48 -32
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PerfectNumbers.Core/Cpu/MersenneNumberDivisorByDivisorCpuTester.cs
+30 -20
View File
@@ -52,10 +52,12 @@ public sealed class MersenneNumberDivisorByDivisorCpuTester : IMersenneNumberDiv
{
get
{
if (!_isConfigured)
{
throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
}
// The by-divisor driver configures the tester during startup, so exposing the divisor limit never
// re-enters this method before initialization completes.
// if (!_isConfigured)
// {
// throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
// }
return _divisorLimit;
}
@@ -63,20 +65,24 @@ public sealed class MersenneNumberDivisorByDivisorCpuTester : IMersenneNumberDiv
public ulong GetAllowedMaxDivisor(ulong prime)
{
if (!_isConfigured)
{
throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
}
// The CLI wires the tester through ConfigureFromMaxPrime before invoking query helpers, so the guard
// would never trigger in production runs.
// if (!_isConfigured)
// {
// throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
// }
return ComputeAllowedMaxDivisor(prime, _divisorLimit);
}
public bool IsPrime(ulong prime, out bool divisorsExhausted, TimeSpan? timeLimit = null)
{
if (!_isConfigured)
{
throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
}
// The tester is configured once during startup, so runtime IsPrime calls always observe a ready
// configuration and the legacy guard can remain commented out.
// if (!_isConfigured)
// {
// throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
// }
ulong divisorLimit = _divisorLimit;
ulong allowedMax = ComputeAllowedMaxDivisor(prime, divisorLimit);
@@ -122,10 +128,12 @@ public sealed class MersenneNumberDivisorByDivisorCpuTester : IMersenneNumberDiv
// throw new ArgumentException("allowedMaxValues span must be at least as long as primes span.", nameof(allowedMaxValues));
// }
if (!_isConfigured)
{
throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
}
// PrepareCandidates is scheduled only after ConfigureFromMaxPrime succeeds, so the tester state is
// stable here and the defensive guard is no longer needed.
// if (!_isConfigured)
// {
// throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
// }
// Configuration is immutable after startup, so reading the cached limit does not require locking.
ulong divisorLimit = _divisorLimit;
@@ -138,10 +146,12 @@ public sealed class MersenneNumberDivisorByDivisorCpuTester : IMersenneNumberDiv
public IMersenneNumberDivisorByDivisorTester.IDivisorScanSession CreateDivisorSession()
{
if (!_isConfigured)
{
throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
}
// The session pool is populated only after configuration, so consumers never request a session before
// ConfigureFromMaxPrime completes.
// if (!_isConfigured)
// {
// throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
// }
if (_sessionPool.TryTake(out DivisorScanSession? session))
{
PerfectNumbers.Core/Gpu/MersenneNumberDivisorByDivisorGpuTester.cs
+18 -12
View File
@@ -150,10 +150,12 @@ public sealed class MersenneNumberDivisorByDivisorGpuTester : IMersenneNumberDiv
throw new ArgumentException("allowedMaxValues span must be at least as long as primes span.", nameof(allowedMaxValues));
}
if (!_isConfigured)
{
throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
}
// The GPU pipeline calls ConfigureFromMaxPrime before preparing candidates, so the legacy guard
// remains commented out to document the invariant without branching.
// if (!_isConfigured)
// {
// throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
// }
ulong divisorLimit = _divisorLimit;
for (int index = 0; index < primes.Length; index++)
@@ -936,20 +938,24 @@ public sealed class MersenneNumberDivisorByDivisorGpuTester : IMersenneNumberDiv
public ulong GetAllowedMaxDivisor(ulong prime)
{
if (!_isConfigured)
{
throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
}
// The CLI configures the GPU tester once at startup, so callers never request divisor limits before
// initialization completes.
// if (!_isConfigured)
// {
// throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
// }
return ComputeAllowedMaxDivisor(prime, _divisorLimit);
}
public DivisorScanSession CreateDivisorSession()
{
if (!_isConfigured)
{
throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
}
// Divisor sessions are handed out only after configuration, so this guard would never trigger on the
// production path.
// if (!_isConfigured)
// {
// throw new InvalidOperationException("ConfigureFromMaxPrime must be called before using the tester.");
// }
if (_sessionPool.TryTake(out DivisorScanSession? session))
{