Please add validation_options supporting on_fail callback about p5-type-tiny HOT 3 CLOSED

Wouldn't it make more sense to use $SIG{__DIE__} to log any exceptions? This would catch not only exceptions thrown by Type::Params, but also other exceptions that might come up like file errors, network errors, etc.

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The $SIG{__DIE__} approach is in many cases suitable, but there are two catches (well, they might be considered as two aspects of one and the same problem):

1. This is too global relating to the application.
   If $SIG{__DIE__} is reset by some other module afterwards, the application behavior will no longer fit the expectations.
   Worse still, it is unclear at which time point this will happen and which behavior is currently active.
   And even the localization would not help because a foreign module called in the same scope can still change this signal handle if it does not localize $SIG{__DIE__}.
2. This is too global relating to threads.
   Signals are in general not thread-safe and even though threads are officially discouraged in the recent Perl versions, we run some crucial multi-threading daemons developed in Perl and would like to improve them in a manner considering costs i.e. without being forced to provide a really radical step replacing threads with processes.

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1fbc5fe

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