// A lock is only needed when the first time an instance is built
internal override void DoBuildInstance(InjectionContext context, ParameterSet parameters, out T instance)
{
var injectionOperator = _builder.InjectionOperator;
if (!ReferenceEquals(injectionOperator, this))
{
_builder.BuildInstance(context, parameters, out instance);
return;
}
Monitor.Enter(_builder.ObjectRelation.SyncRoot);
injectionOperator = _builder.InjectionOperator;
if (!ReferenceEquals(injectionOperator, this))
{
Monitor.Exit(_builder.ObjectRelation.SyncRoot);
_builder.BuildInstance(context, parameters, out instance);
return;
}
try
{
var process = _configurationSet.CreateInjectionProcess <T>(context.Kernel);
var oneoff = new OneOffInjectionOperator <T>(_builder, _description, _lifetime, process);
InjectionOperatorHelper.UpgradeToOneOffObjectBuilder(_builder, oneoff);
oneoff.BuildInstance(context, parameters, out instance);
}
finally
{
Monitor.Exit(_builder.ObjectRelation.SyncRoot);
}
}
public static void UpgradeToOneOffObjectBuilder <T>(ObjectBuilder <T> builder, OneOffInjectionOperator <T> oneoff)
{
builder.SetInjectionOperator(oneoff);
}