/// <summary>
/// Free the durable commit session.
/// We do not try to set the instance parameter to null, since the callback is disposed after JetTerm and
/// the callback cannot be set after JetTerm.
/// </summary>
protected override void ReleaseResource()
{
this.instance = JET_INSTANCE.Nil;
this.wrappedCallback = null;
this.wrapperCallback = null;
this.ResourceWasReleased();
}
/// <summary>
/// Gets the callback for log flush.
/// </summary>
/// <returns>The delegate that's called for log flush.</returns>
internal NATIVE_JET_PFNDURABLECOMMITCALLBACK GetDurableCommitCallback()
{
NATIVE_JET_PFNDURABLECOMMITCALLBACK pfndurablecommit = null;
IntPtr rawValue = this.GetIntPtrParameter(Windows8Param.DurableCommitCallback);
if (rawValue != IntPtr.Zero)
{
pfndurablecommit = (NATIVE_JET_PFNDURABLECOMMITCALLBACK)Marshal.GetDelegateForFunctionPointer(rawValue, typeof(NATIVE_JET_PFNDURABLECOMMITCALLBACK));
}
return(pfndurablecommit);
}
/// <summary>
/// Sets the callback for log flush.
/// It is the caller's responsibility to hold a reference to the delegate
/// so that it doesn't get GC'ed.
/// </summary>
/// <param name="callback">
/// The callback.
/// </param>
internal void SetDurableCommitCallback(
NATIVE_JET_PFNDURABLECOMMITCALLBACK callback)
{
IntPtr nativeDelegate;
if (callback != null)
{
nativeDelegate = Marshal.GetFunctionPointerForDelegate(callback);
}
else
{
nativeDelegate = IntPtr.Zero;
}
this.SetIntPtrParameter(Windows8Param.DurableCommitCallback, nativeDelegate);
}
public void VerifyGetAndSetNullDurableCommitCallback()
{
if (!EsentVersion.SupportsWindows8Features)
{
return;
}
NATIVE_JET_PFNDURABLECOMMITCALLBACK savedCallback = this.instanceParameters.GetDurableCommitCallback();
try
{
this.instanceParameters.SetDurableCommitCallback(null);
Assert.AreEqual(null, this.instanceParameters.GetDurableCommitCallback());
}
finally
{
this.instanceParameters.SetDurableCommitCallback(savedCallback);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="DurableCommitCallback"/> class.
/// The constructor.
/// </summary>
/// <param name="instance">
/// The instance with which to associate the callback.
/// </param>
/// <param name="wrappedCallback">
/// The managed code callback to call.
/// </param>
public DurableCommitCallback(
JET_INSTANCE instance,
JET_PFNDURABLECOMMITCALLBACK wrappedCallback)
{
this.instance = instance;
this.wrappedCallback = wrappedCallback;
this.wrapperCallback = this.NativeDurableCommitCallback;
#if !MANAGEDESENT_ON_WSA // RuntimeHelpers works differently in Windows Store Apps.
if (this.wrappedCallback != null)
{
RuntimeHelpers.PrepareMethod(this.wrappedCallback.Method.MethodHandle);
}
RuntimeHelpers.PrepareMethod(typeof(DurableCommitCallback).GetMethod("NativeDurableCommitCallback", BindingFlags.NonPublic | BindingFlags.Instance).MethodHandle);
#endif
InstanceParameters instanceParameters = new InstanceParameters(this.instance);
// This might be null.
instanceParameters.SetDurableCommitCallback(this.wrapperCallback);
this.ResourceWasAllocated();
}
/// <summary>
/// Initializes a new instance of the <see cref="DurableCommitCallback"/> class.
/// The constructor.
/// </summary>
/// <param name="instance">
/// The instance with which to associate the callback.
/// </param>
/// <param name="wrappedCallback">
/// The managed code callback to call.
/// </param>
public DurableCommitCallback(
JET_INSTANCE instance,
JET_PFNDURABLECOMMITCALLBACK wrappedCallback)
{
this.instance = instance;
this.wrappedCallback = wrappedCallback;
this.wrapperCallback = this.NativeDurableCommitCallback;
#if !MANAGEDESENT_ON_WSA // RuntimeHelpers works differently in Windows Store Apps.
if (this.wrappedCallback != null)
{
RuntimeHelpers.PrepareMethod(this.wrappedCallback.Method.MethodHandle);
}
RuntimeHelpers.PrepareMethod(typeof(DurableCommitCallback).GetMethod("NativeDurableCommitCallback", BindingFlags.NonPublic | BindingFlags.Instance).MethodHandle);
#endif
InstanceParameters instanceParameters = new InstanceParameters(this.instance);
// This might be null.
instanceParameters.SetDurableCommitCallback(this.wrapperCallback);
this.ResourceWasAllocated();
}
/// <summary>
/// Free the durable commit session.
/// We do not try to set the instance parameter to null, since the callback is disposed after JetTerm and
/// the callback cannot be set after JetTerm.
/// </summary>
protected override void ReleaseResource()
{
this.instance = JET_INSTANCE.Nil;
this.wrappedCallback = null;
this.wrapperCallback = null;
this.ResourceWasReleased();
}
/// <summary>
/// Sets the callback for log flush.
/// It is the caller's responsibility to hold a reference to the delegate
/// so that it doesn't get GC'ed.
/// </summary>
/// <param name="callback">
/// The callback.
/// </param>
internal void SetDurableCommitCallback(
NATIVE_JET_PFNDURABLECOMMITCALLBACK callback)
{
IntPtr nativeDelegate;
if (callback != null)
{
nativeDelegate = Marshal.GetFunctionPointerForDelegate(callback);
}
else
{
nativeDelegate = IntPtr.Zero;
}
this.SetIntPtrParameter(Windows8Param.DurableCommitCallback, nativeDelegate);
}
