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Dealt with some concurrency issues due to concurrent GC.

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This commit is contained in:
mattpark 2014-08-11 15:44:10 +01:00
parent 47ac5c0633
commit 5a45711f22
2 changed files with 5 additions and 5 deletions
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2
src/api/dotnet/Context.cs
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@ -3646,7 +3646,7 @@ namespace Microsoft.Z3
internal Fixedpoint.DecRefQueue Fixedpoint_DRQ { get { Contract.Ensures(Contract.Result<Fixedpoint.DecRefQueue>() != null); return m_Fixedpoint_DRQ; } } internal Fixedpoint.DecRefQueue Fixedpoint_DRQ { get { Contract.Ensures(Contract.Result<Fixedpoint.DecRefQueue>() != null); return m_Fixedpoint_DRQ; } }
internal uint refCount = 0; internal int refCount = 0;
/// <summary> /// <summary>
/// Finalizer. /// Finalizer.

8
src/api/dotnet/Z3Object.cs
View file

@ -19,6 +19,7 @@ Notes:
using System; using System;
using System.Diagnostics.Contracts; using System.Diagnostics.Contracts;
using System.Threading;
namespace Microsoft.Z3 namespace Microsoft.Z3
{ {
@ -50,8 +51,7 @@ namespace Microsoft.Z3
if (m_ctx != null) if (m_ctx != null)
{ {
m_ctx.refCount--; if (Interlocked.Decrement(ref m_ctx.refCount) == 0)
if (m_ctx.refCount == 0)
GC.ReRegisterForFinalize(m_ctx); GC.ReRegisterForFinalize(m_ctx);
m_ctx = null; m_ctx = null;
} }
@ -77,7 +77,7 @@ namespace Microsoft.Z3
{ {
Contract.Requires(ctx != null); Contract.Requires(ctx != null);
ctx.refCount++; Interlocked.Increment(ref ctx.refCount);
m_ctx = ctx; m_ctx = ctx;
} }
@ -85,7 +85,7 @@ namespace Microsoft.Z3
{ {
Contract.Requires(ctx != null); Contract.Requires(ctx != null);
ctx.refCount++; Interlocked.Increment(ref ctx.refCount);
m_ctx = ctx; m_ctx = ctx;
IncRef(obj); IncRef(obj);
m_n_obj = obj; m_n_obj = obj;