49 lines
1.5 KiB
C#
49 lines
1.5 KiB
C#
using System;
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using CeresSharp.Native;
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namespace CeresSharp.Native.SafeHandles;
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/// <summary>
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/// Safe handle for Ceres LossFunction.
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/// </summary>
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internal sealed class LossFunctionHandle : BaseSafeHandle
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{
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private volatile bool _ownedByProblem = false;
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private LossFunctionHandle() : base()
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{
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}
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private LossFunctionHandle(IntPtr handle, bool ownsHandle) : base(handle, ownsHandle)
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{
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}
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public static LossFunctionHandle Create(IntPtr handle)
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{
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if (handle == IntPtr.Zero)
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{
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throw new Exceptions.CeresException(Exceptions.CeresErrorCode.NullPointer, "Loss function handle is null");
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}
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return new LossFunctionHandle(handle, true);
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}
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/// <summary>
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/// Marks this loss function as owned by a Problem.
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/// When owned by Problem, the native handle should NOT be freed here
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/// because Problem/Ceres will free it when Problem is destroyed.
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/// </summary>
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internal void MarkOwnedByProblem() => _ownedByProblem = true;
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protected override void ReleaseNativeHandle(IntPtr handle)
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{
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if (_ownedByProblem)
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{
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// Problem owns this loss function - Ceres will delete it when Problem is freed.
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// Do NOT free here to avoid double-free.
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return;
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}
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// Standalone loss function - we must free it ourselves
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CeresNative.ceres_wrapper_free_loss_function(handle);
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}
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}
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