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------------------------------------------------------------------------------
-- --
-- GNAT LIBRARY COMPONENTS --
-- --
-- G N A T . M O S T _ R E C E N T _ E X C E P T I O N --
-- --
-- S p e c --
-- --
-- Copyright (C) 2000-2008, AdaCore --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This package provides routines for accessing the most recently raised
-- exception. This may be useful for certain logging activities. It may
-- also be useful for mimicking implementation dependent capabilities in
-- Ada 83 compilers, but see also GNAT.Current_Exceptions for this usage.
with Ada.Exceptions;
package GNAT.Most_Recent_Exception is
-----------------
-- Subprograms --
-----------------
function Occurrence
return Ada.Exceptions.Exception_Occurrence;
-- Returns the Exception_Occurrence for the most recently raised exception
-- in the current task. If no exception has been raised in the current task
-- prior to the call, returns Null_Occurrence.
function Occurrence_Access
return Ada.Exceptions.Exception_Occurrence_Access;
-- Similar to the above, but returns an access to the occurrence value.
-- This value is in a task specific location, and may be validly accessed
-- as long as no further exception is raised in the calling task.
-- Note: unlike the routines in GNAT.Current_Exception, these functions
-- access the most recently raised exception, regardless of where they
-- are called. Consider the following example:
-- exception
-- when Constraint_Error =>
-- begin
-- ...
-- exception
-- when Tasking_Error => ...
-- end;
--
-- -- Assuming a Tasking_Error was raised in the inner block,
-- -- a call to GNAT.Most_Recent_Exception.Occurrence will
-- -- return information about this Tasking_Error exception,
-- -- not about the Constraint_Error exception being handled
-- -- by the current handler code.
end GNAT.Most_Recent_Exception;
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