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Diffstat (limited to 'gcc/ada/a-sytaco-vxworks.adb')
| -rw-r--r-- | gcc/ada/a-sytaco-vxworks.adb | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/gcc/ada/a-sytaco-vxworks.adb b/gcc/ada/a-sytaco-vxworks.adb deleted file mode 100644 index fcb320a97ec..00000000000 --- a/gcc/ada/a-sytaco-vxworks.adb +++ /dev/null @@ -1,147 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT RUNTIME COMPONENTS -- --- -- --- A D A . S Y N C H R O N O U S _ T A S K _ C O N T R O L -- --- -- --- B o d y -- --- -- --- Copyright (C) 1992-2004 Free Software Foundation, Inc. -- --- -- --- 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, 59 Temple Place - Suite 330, Boston, -- --- MA 02111-1307, 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. -- --- Extensive contributions were provided by Ada Core Technologies Inc. -- --- -- ------------------------------------------------------------------------------- - -with Interfaces.C; - -package body Ada.Synchronous_Task_Control is - use System.OS_Interface; - use type Interfaces.C.int; - - ------------------- - -- Current_State -- - ------------------- - - function Current_State (S : Suspension_Object) return Boolean is - St : STATUS; - Result : Boolean := False; - - begin - -- Determine state by attempting to take the semaphore with - -- a 0 timeout value. Status = OK indicates the semaphore was - -- full, so reset it to the full state. - - St := semTake (S.Sema, NO_WAIT); - - -- If we took the semaphore, reset semaphore state to FULL - - if St = OK then - Result := True; - St := semGive (S.Sema); - end if; - - return Result; - end Current_State; - - --------------- - -- Set_False -- - --------------- - - procedure Set_False (S : in out Suspension_Object) is - St : STATUS; - - begin - -- Need to get the semaphore into the "empty" state. - -- On return, this task will have made the semaphore - -- empty (St = OK) or have left it empty. - - St := semTake (S.Sema, NO_WAIT); - pragma Assert (St = OK); - end Set_False; - - -------------- - -- Set_True -- - -------------- - - procedure Set_True (S : in out Suspension_Object) is - St : STATUS; - pragma Unreferenced (St); - begin - St := semGive (S.Sema); - end Set_True; - - ------------------------ - -- Suspend_Until_True -- - ------------------------ - - procedure Suspend_Until_True (S : in out Suspension_Object) is - St : STATUS; - - begin - -- Determine whether another task is pending on the suspension - -- object. Should never be called from an ISR. Therefore semTake can - -- be called on the mutex - - St := semTake (S.Mutex, NO_WAIT); - - if St = OK then - - -- Wait for suspension object - - St := semTake (S.Sema, WAIT_FOREVER); - St := semGive (S.Mutex); - - else - -- Another task is pending on the suspension object - - raise Program_Error; - end if; - end Suspend_Until_True; - - ---------------- - -- Initialize -- - ---------------- - - procedure Initialize (S : in out Suspension_Object) is - begin - S.Sema := semBCreate (SEM_Q_FIFO, SEM_EMPTY); - - -- Use simpler binary semaphore instead of VxWorks - -- mutual exclusion semaphore, because we don't need - -- the fancier semantics and their overhead. - - S.Mutex := semBCreate (SEM_Q_FIFO, SEM_FULL); - end Initialize; - - -------------- - -- Finalize -- - -------------- - - procedure Finalize (S : in out Suspension_Object) is - St : STATUS; - pragma Unreferenced (St); - begin - St := semDelete (S.Sema); - St := semDelete (S.Mutex); - end Finalize; - -end Ada.Synchronous_Task_Control; |