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[AL] Fix runtime crash when OpenAL not available

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Issue reported at http://www.opentk.com/node/3805

We must not throw exceptions from a finalizer, as this leads to the
runtime forcibly taking down the application.
This commit is contained in:
thefiddler 2014-09-29 23:37:40 +02:00
parent e06fc9fb0a
commit 9851a3bab9
1 changed files with 16 additions and 6 deletions
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22
Source/OpenTK/Audio/AudioDeviceEnumerator.cs
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@ -204,12 +204,22 @@ namespace OpenTK.Audio
{ {
Debug.Unindent(); Debug.Unindent();
// clean up the dummy context if (openal_supported)
Alc.MakeContextCurrent(ContextHandle.Zero); {
if (dummy_context != ContextHandle.Zero && dummy_context.Handle != IntPtr.Zero) try
Alc.DestroyContext(dummy_context); {
if (dummy_device != IntPtr.Zero) // clean up the dummy context
Alc.CloseDevice(dummy_device); Alc.MakeContextCurrent(ContextHandle.Zero);
if (dummy_context != ContextHandle.Zero && dummy_context.Handle != IntPtr.Zero)
Alc.DestroyContext(dummy_context);
if (dummy_device != IntPtr.Zero)
Alc.CloseDevice(dummy_device);
}
catch
{
openal_supported = false;
}
}
} }
} }