75 lines
4.1 KiB
Ada
75 lines
4.1 KiB
Ada
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------------------------------------------------------------------------------
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-- --
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-- GNAT LIBRARY COMPONENTS --
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-- --
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-- G N A T . M O S T _ R E C E N T _ E X C E P T I O N --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 2000-2010, AdaCore --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- This package provides routines for accessing the most recently raised
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-- exception. This may be useful for certain logging activities. It may
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-- also be useful for mimicking implementation dependent capabilities in
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-- Ada 83 compilers, but see also GNAT.Current_Exceptions for this usage.
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with Ada.Exceptions;
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package GNAT.Most_Recent_Exception is
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-----------------
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-- Subprograms --
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-----------------
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function Occurrence
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return Ada.Exceptions.Exception_Occurrence;
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-- Returns the Exception_Occurrence for the most recently raised exception
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-- in the current task. If no exception has been raised in the current task
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-- prior to the call, returns Null_Occurrence.
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function Occurrence_Access
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return Ada.Exceptions.Exception_Occurrence_Access;
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-- Similar to the above, but returns an access to the occurrence value.
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-- This value is in a task specific location, and may be validly accessed
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-- as long as no further exception is raised in the calling task.
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-- Note: unlike the routines in GNAT.Current_Exception, these functions
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-- access the most recently raised exception, regardless of where they
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-- are called. Consider the following example:
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-- exception
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-- when Constraint_Error =>
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-- begin
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-- ...
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-- exception
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-- when Tasking_Error => ...
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-- end;
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--
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-- -- Assuming a Tasking_Error was raised in the inner block,
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-- -- a call to GNAT.Most_Recent_Exception.Occurrence will
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-- -- return information about this Tasking_Error exception,
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-- -- not about the Constraint_Error exception being handled
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-- -- by the current handler code.
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end GNAT.Most_Recent_Exception;
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