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Dotnet Api: Fix infinite finalization of Context (#6361)

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* Dotnet Api: suppress GC finalization of dotnet context in favor of re-registering finalization

* Dotnet Api: enable concurrent dec-ref even if context is created without parameters.

* Dotnet Api: removed dead code.
This commit is contained in:
Peter Bruch 2022-09-22 20:25:17 +02:00 • committed by GitHub
parent 42945de240
commit 58fad41dfa
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5 changed files with 6 additions and 149 deletions
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6
src/api/dotnet/Context.cs
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@ -42,6 +42,7 @@ namespace Microsoft.Z3
lock (creation_lock)
{
m_ctx = Native.Z3_mk_context_rc(IntPtr.Zero);
Native.Z3_enable_concurrent_dec_ref(m_ctx);
InitContext();
}
}
@ -4794,7 +4795,6 @@ namespace Microsoft.Z3
PrintMode = Z3_ast_print_mode.Z3_PRINT_SMTLIB2_COMPLIANT;
m_n_err_handler = new Native.Z3_error_handler(NativeErrorHandler); // keep reference so it doesn't get collected.
Native.Z3_set_error_handler(m_ctx, m_n_err_handler);
GC.SuppressFinalize(this);
}
internal void CheckContextMatch(Z3Object other)
@ -4893,8 +4893,8 @@ namespace Microsoft.Z3
if (!is_external)
Native.Z3_del_context(ctx);
}
else
GC.ReRegisterForFinalize(this);
GC.SuppressFinalize(this);
}