a-sytaco.ads, [...] (Suspension_Object): These objects are no longer protected objects.

2005-06-14  Jose Ruiz  <ruiz@adacore.com>
	    Arnaud Charlet  <charlet@adacore.com>

	* a-sytaco.ads, a-sytaco.adb (Suspension_Object): These objects are no
	longer protected objects. They have been replaced by lower-level
	suspension objects made up by a mutex and a condition variable (or
	their equivalent given a particular OS) plus some internal data to
	reflect the state of the suspension object.
	(Initialize, Finalize): Add this initialization procedure for
	Suspension_Object, which is a controlled type.
	(Finalize): Add the finalization procedure for Suspension_Object,
	which is a controlled type.

	* a-sytaco-vxworks.ads, a-sytaco-vxworks.adb: Remove this version of
	Ada.Synchronous_Task_Control because there is no longer a need for a
	VxWorks specific version of this package. Target dependencies
	has been moved to System.Task_Primitives.Operations.

	* s-osinte-mingw.ads (pCRITICAL_SECTION): Remove this type which is no
	longer needed.
	(InitializeCriticalSection, EnterCriticalSection,
	LeaveCriticalSection, DeleteCriticalSection): Replace the type
	pCriticalSection by an anonymous access type so that we avoid problems
	of accessibility to local objects.

	* s-taprop.ads, s-taprop-posix.adb, s-taprop-vxworks.adb,
	s-taprop-mingw.adb, s-taprop-vms.adb, s-taprop-solaris.adb,
	s-taprop-os2.adb, s-taprop-dummy.adb, s-taprop-hpux-dce.adb,
	s-taprop-linux.adb, s-taprop-irix.adb, s-taprop-irix-athread.adb,
	s-taprop-tru64.adb, s-taprop-lynxos.adb (Elaboration Code): No longer
	set the environment task mask here.
	(Current_State): Add this function that returns the state of the
	suspension object.
	(Set_False): Add this procedure that sets the state of the suspension
	object to False.
	(Set_True): Add this procedure that sets the state of the suspension
	object to True, releasing the task that was suspended, if any.
	(Suspend_Until_True): Add this procedure that blocks the calling task
	until the state of the object is True. Program_Error is raised if
	another task is already waiting on that suspension object.
	(Initialize): Add this procedure for initializing the suspension
	object. It initializes the mutex and the condition variable which are
	used for synchronization and queuing, and it sets the internal state
	to False.
	(Finalize): Add this procedure for finalizing the suspension object,
	destroying the mutex and the condition variable.

	* s-taspri-posix.ads, s-taspri-vxworks.ads, s-taspri-mingw.ads,
	s-taspri-vms.ads, s-taspri-solaris.ads, s-taspri-os2.ads,
	s-taspri-dummy.ads, s-taspri-hpux-dce.ads, s-taspri-linux.ads,
	s-taspri-tru64.ads, s-taspri-lynxos.ads (Suspension_Object): New object
	which provides a low-level abstraction (using operating system
	primitives) for Ada.Synchronous_Task_Control.
	This object is made up by a mutex (for ensuring mutual exclusion), a
	condition variable (for queuing threads until the condition is
	signaled), a Boolean (State) indicating whether the object is open,
	and a Boolean (Waiting) reflecting whether there is a task already
	suspended on this object.

	* s-intman.ads, s-intman-irix.adb, s-intman-irix-athread.adb,
	s-intman-dummy.adb, s-intman-solaris.adb, s-intman-vms.adb,
	s-intman-vms.ads, s-intman-mingw.adb,
	(Initialize_Interrupts): Removed, no longer used.

	* s-inmaop-posix.adb, s-inmaop-vms.adb, s-inmaop-dummy.adb,
	(Setup_Interrupt_Mask): New procedure.

	* s-intman-vxworks.ads, s-intman-vxworks.adb:  Update comments.

	* s-inmaop.ads (Setup_Interrupt_Mask): New procedure

	* s-interr.adb: Add explicit call to Setup_Interrupt_Mask now that
	this is no longer done in the body of s-taprop
	(Server_Task): Explicitely test for Pending_Action in case
	System.Parameters.No_Abort is True.

	* s-taasde.adb: Add explicit call to Setup_Interrupt_Mask now that this
	is no longer done in the body of s-taprop

From-SVN: r101015

1 files changed, 11 insertions, 25 deletions

diff --git a/gcc/ada/s-intman-vms.adb b/gcc/ada/s-intman-vms.adb
index 1190378766f..4286eb06d37 100644
--- a/gcc/ada/s-intman-vms.adb
+++ b/gcc/ada/s-intman-vms.adb
@@ -1,12 +1,12 @@
 ------------------------------------------------------------------------------
 --                                                                          --
---                GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS               --
+--                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 --
 --                                                                          --
 --           S Y S T E M . I N T E R R U P T _ M A N A G E M E N T          --
 --                                                                          --
 --                                  B o d y                                 --
 --                                                                          --
---         Copyright (C) 1992-2002, Free Software Foundation, Inc.          --
+--         Copyright (C) 1992-2005, Free Software Foundation, Inc.          --
 --                                                                          --
 -- GNARL 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- --
@@ -33,12 +33,6 @@
 
 --  This is a OpenVMS/Alpha version of this package.
 
---  PLEASE DO NOT add any dependences on other packages.
---  This package is designed to work with or without tasking support.
-
---  See the other warnings in the package specification before making
---  any modifications to this file.
-
 with System.OS_Interface;
 --  used for various Constants, Signal and types
 
@@ -47,13 +41,16 @@ package body System.Interrupt_Management is
    use System.OS_Interface;
    use type unsigned_long;
 
-   ---------------------------
-   -- Initialize_Interrupts --
-   ---------------------------
+begin
+   Abort_Task_Interrupt := Interrupt_ID_0;
+   --  Unused
+
+   Reserve := Reserve or Keep_Unmasked or Keep_Masked;
 
-   procedure Initialize_Interrupts is
-      Status : Cond_Value_Type;
+   Reserve (Interrupt_ID_0) := True;
 
+   declare
+      Status : Cond_Value_Type;
    begin
       Sys_Crembx
         (Status => Status,
@@ -73,16 +70,5 @@ package body System.Interrupt_Management is
          Flags  => AGN_M_WRITEONLY);
 
       pragma Assert ((Status and 1) = 1);
-   end Initialize_Interrupts;
-
-begin
-   --  Unused
-
-   Abort_Task_Interrupt := Interrupt_ID_0;
-
-   Reserve := Reserve or Keep_Unmasked or Keep_Masked;
-
-   Reserve (Interrupt_ID_0) := True;
-
-   Initialize_Interrupts;
+   end;
 end System.Interrupt_Management;