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Diffstat (limited to 'gcc-4.8.3/gcc/ada/g-moreex.ads')
-rw-r--r-- | gcc-4.8.3/gcc/ada/g-moreex.ads | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/gcc-4.8.3/gcc/ada/g-moreex.ads b/gcc-4.8.3/gcc/ada/g-moreex.ads new file mode 100644 index 000000000..5d261093f --- /dev/null +++ b/gcc-4.8.3/gcc/ada/g-moreex.ads @@ -0,0 +1,74 @@ +------------------------------------------------------------------------------ +-- -- +-- 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) 2000-2010, 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 3, 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. -- +-- -- +-- As a special exception under Section 7 of GPL version 3, you are granted -- +-- additional permissions described in the GCC Runtime Library Exception, -- +-- version 3.1, as published by the Free Software Foundation. -- +-- -- +-- You should have received a copy of the GNU General Public License and -- +-- a copy of the GCC Runtime Library Exception along with this program; -- +-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- +-- <http://www.gnu.org/licenses/>. -- +-- -- +-- 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; |