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verified gcc-4.6.4.tar.bz2.sig;
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downloading a git-generated archive based on the 'upstream' tag
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1 files changed, 99 insertions, 0 deletions

diff --git a/gcc/ada/g-semaph.ads b/gcc/ada/g-semaph.ads
new file mode 100644
index 000000000..a1ed4e9e7
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+++ b/gcc/ada/g-semaph.ads
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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT LIBRARY COMPONENTS                          --
+--                                                                          --
+--                      G N A T . S E M A P H O R E S                       --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                     Copyright (C) 2003-2005, 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. --
+-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package provides classic counting semaphores and binary semaphores.
+--  Both types are visibly defined as protected types so that users can make
+--  conditional and timed calls when appropriate.
+
+with System;
+
+package GNAT.Semaphores is
+
+   Default_Ceiling : constant System.Priority := System.Default_Priority;
+   --  A convenient value for the priority discriminants that follow
+
+   ------------------------
+   -- Counting_Semaphore --
+   ------------------------
+
+   protected type Counting_Semaphore
+      (Initial_Value : Natural;
+      --  A counting semaphore contains an internal counter.  The initial
+      --  value of this counter is set by clients via the discriminant.
+
+      Ceiling : System.Priority)
+      --  Users must specify the ceiling priority for the object. If the
+      --  Real-Time Systems Annex is not in use this value is not important.
+   is
+      pragma Priority (Ceiling);
+
+      entry Seize;
+      --  Blocks caller until/unless the semaphore's internal counter is
+      --  greater than zero. Decrements the semaphore's internal counter when
+      --  executed.
+
+      procedure Release;
+      --  Increments the semaphore's internal counter
+
+   private
+      Count : Natural := Initial_Value;
+   end Counting_Semaphore;
+
+   ----------------------
+   -- Binary_Semaphore --
+   ----------------------
+
+   protected type Binary_Semaphore
+     (Initially_Available : Boolean;
+      --  Binary semaphores are either available or not; there is no internal
+      --  count involved. The discriminant value determines whether the
+      --  individual object is initially available.
+
+      Ceiling : System.Priority)
+      --  Users must specify the ceiling priority for the object. If the
+      --  Real-Time Systems Annex is not in use this value is not important.
+   is
+      pragma Priority (Ceiling);
+
+      entry Seize;
+      --  Blocks the caller unless/until semaphore is available. After
+      --  execution the semaphore is no longer available.
+
+      procedure Release;
+      --  Makes the semaphore available
+
+   private
+      Available : Boolean := Initially_Available;
+   end Binary_Semaphore;
+
+end GNAT.Semaphores;