aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.9/gcc/ada/g-exctra.ads
diff options
context:
space:
mode:
Diffstat (limited to 'gcc-4.9/gcc/ada/g-exctra.ads')
-rw-r--r--gcc-4.9/gcc/ada/g-exctra.ads96
1 files changed, 96 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/ada/g-exctra.ads b/gcc-4.9/gcc/ada/g-exctra.ads
new file mode 100644
index 000000000..83bc339b4
--- /dev/null
+++ b/gcc-4.9/gcc/ada/g-exctra.ads
@@ -0,0 +1,96 @@
+------------------------------------------------------------------------------
+-- --
+-- GNAT RUN-TIME COMPONENTS --
+-- --
+-- G N A T . E X C E P T I O N _ T R A C E S --
+-- --
+-- 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 an interface allowing to control *automatic* output
+-- to standard error upon exception occurrences (as opposed to explicit
+-- generation of traceback information using GNAT.Traceback).
+
+-- This output includes the basic information associated with the exception
+-- (name, message) as well as a backtrace of the call chain at the point
+-- where the exception occurred. This backtrace is only output if the call
+-- chain information is available, depending if the binder switch dedicated
+-- to that purpose has been used or not.
+
+-- The default backtrace is in the form of absolute code locations which may
+-- be converted to corresponding source locations using the addr2line utility
+-- or from within GDB. Please refer to GNAT.Traceback for information about
+-- what is necessary to be able to exploit this possibility.
+
+-- The backtrace output can also be customized by way of a "decorator" which
+-- may return any string output in association with a provided call chain.
+-- The decorator replaces the default backtrace mentioned above.
+
+with GNAT.Traceback; use GNAT.Traceback;
+
+package GNAT.Exception_Traces is
+
+ -- The following defines the exact situations in which raises will
+ -- cause automatic output of trace information.
+
+ type Trace_Kind is
+ (Every_Raise,
+ -- Denotes the initial raise event for any exception occurrence, either
+ -- explicit or due to a specific language rule, within the context of a
+ -- task or not.
+
+ Unhandled_Raise
+ -- Denotes the raise events corresponding to exceptions for which there
+ -- is no user defined handler, in particular, when a task dies due to an
+ -- unhandled exception.
+ );
+
+ -- The following procedures can be used to activate and deactivate
+ -- traces identified by the above trace kind values.
+
+ procedure Trace_On (Kind : Trace_Kind);
+ -- Activate the traces denoted by Kind
+
+ procedure Trace_Off;
+ -- Stop the tracing requested by the last call to Trace_On.
+ -- Has no effect if no such call has ever occurred.
+
+ -- The following provide the backtrace decorating facilities
+
+ type Traceback_Decorator is access
+ function (Traceback : Tracebacks_Array) return String;
+ -- A backtrace decorator is a function which returns the string to be
+ -- output for a call chain provided by way of a tracebacks array.
+
+ procedure Set_Trace_Decorator (Decorator : Traceback_Decorator);
+ -- Set the decorator to be used for future automatic outputs. Restore
+ -- the default behavior (output of raw addresses) if the provided
+ -- access value is null.
+ --
+ -- Note: GNAT.Traceback.Symbolic.Symbolic_Traceback may be used as the
+ -- Decorator, to get a symbolic traceback. This will cause a significant
+ -- cpu and memory overhead.
+
+end GNAT.Exception_Traces;