X-Git-Url: https://oss.titaniummirror.com/gitweb?a=blobdiff_plain;f=gcc%2Fada%2Fs-tpoben.adb;fp=gcc%2Fada%2Fs-tpoben.adb;h=0000000000000000000000000000000000000000;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=5f16cfe96f677fc78fe0b567b7bf73be5ba9cdf2;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/gcc/ada/s-tpoben.adb b/gcc/ada/s-tpoben.adb deleted file mode 100644 index 5f16cfe9..00000000 --- a/gcc/ada/s-tpoben.adb +++ /dev/null @@ -1,248 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS -- --- -- --- S Y S T E M . T A S K I N G . P R O T E C T E D _ O B J E C T S . -- --- E N T R I E S -- --- -- --- B o d y -- --- -- --- $Revision: 1.1 $ --- -- --- Copyright (C) 1991-2001, Florida State University -- --- -- --- 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- -- --- ware Foundation; either version 2, or (at your option) any later ver- -- --- sion. GNARL 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 GNARL; 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. -- --- -- --- GNARL was developed by the GNARL team at Florida State University. It is -- --- now maintained by Ada Core Technologies Inc. in cooperation with Florida -- --- State University (http://www.gnat.com). -- --- -- ------------------------------------------------------------------------------- - --- This package contains all the simple primitives related to --- Protected_Objects with entries (i.e init, lock, unlock). - --- The handling of protected objects with no entries is done in --- System.Tasking.Protected_Objects, the complex routines for protected --- objects with entries in System.Tasking.Protected_Objects.Operations. --- The split between Entries and Operations is needed to break circular --- dependencies inside the run time. - --- Note: the compiler generates direct calls to this interface, via Rtsfind. - -with Ada.Exceptions; --- used for Exception_Occurrence_Access - -with System.Task_Primitives.Operations; --- used for Initialize_Lock --- Write_Lock --- Unlock --- Get_Priority --- Wakeup - -with System.Tasking.Initialization; --- used for Defer_Abort, --- Undefer_Abort, --- Change_Base_Priority - -pragma Elaborate_All (System.Tasking.Initialization); --- this insures that tasking is initialized if any protected objects are --- created. - -package body System.Tasking.Protected_Objects.Entries is - - package STPO renames System.Task_Primitives.Operations; - - use Ada.Exceptions; - use STPO; - - Locking_Policy : Character; - pragma Import (C, Locking_Policy, "__gl_locking_policy"); - - -------------- - -- Finalize -- - -------------- - - procedure Finalize (Object : in out Protection_Entries) is - Entry_Call : Entry_Call_Link; - Caller : Task_ID; - Ceiling_Violation : Boolean; - Self_ID : constant Task_ID := STPO.Self; - Old_Base_Priority : System.Any_Priority; - - begin - if Object.Finalized then - return; - end if; - - STPO.Write_Lock (Object.L'Unrestricted_Access, Ceiling_Violation); - - if Ceiling_Violation then - - -- Dip our own priority down to ceiling of lock. - -- See similar code in Tasking.Entry_Calls.Lock_Server. - - STPO.Write_Lock (Self_ID); - Old_Base_Priority := Self_ID.Common.Base_Priority; - Self_ID.New_Base_Priority := Object.Ceiling; - Initialization.Change_Base_Priority (Self_ID); - STPO.Unlock (Self_ID); - STPO.Write_Lock (Object.L'Unrestricted_Access, Ceiling_Violation); - - if Ceiling_Violation then - Raise_Exception (Program_Error'Identity, "Ceiling Violation"); - end if; - - Object.Old_Base_Priority := Old_Base_Priority; - Object.Pending_Action := True; - end if; - - -- Send program_error to all tasks still queued on this object. - - for E in Object.Entry_Queues'Range loop - Entry_Call := Object.Entry_Queues (E).Head; - - while Entry_Call /= null loop - Caller := Entry_Call.Self; - Entry_Call.Exception_To_Raise := Program_Error'Identity; - STPO.Write_Lock (Caller); - Initialization.Wakeup_Entry_Caller (Self_ID, Entry_Call, Done); - STPO.Unlock (Caller); - exit when Entry_Call = Object.Entry_Queues (E).Tail; - Entry_Call := Entry_Call.Next; - end loop; - end loop; - - Object.Finalized := True; - STPO.Unlock (Object.L'Unrestricted_Access); - STPO.Finalize_Lock (Object.L'Unrestricted_Access); - end Finalize; - - ------------------------------------- - -- Has_Interrupt_Or_Attach_Handler -- - ------------------------------------- - - function Has_Interrupt_Or_Attach_Handler - (Object : Protection_Entries_Access) - return Boolean - is - begin - return False; - end Has_Interrupt_Or_Attach_Handler; - - ----------------------------------- - -- Initialize_Protection_Entries -- - ----------------------------------- - - procedure Initialize_Protection_Entries - (Object : Protection_Entries_Access; - Ceiling_Priority : Integer; - Compiler_Info : System.Address; - Entry_Bodies : Protected_Entry_Body_Access; - Find_Body_Index : Find_Body_Index_Access) - is - Init_Priority : Integer := Ceiling_Priority; - Self_ID : constant Task_ID := STPO.Self; - - begin - if Init_Priority = Unspecified_Priority then - Init_Priority := System.Priority'Last; - end if; - - if Locking_Policy = 'C' - and then Has_Interrupt_Or_Attach_Handler (Object) - and then Init_Priority not in System.Interrupt_Priority - then - -- Required by C.3.1(11) - - raise Program_Error; - end if; - - Initialization.Defer_Abort (Self_ID); - Initialize_Lock (Init_Priority, Object.L'Access); - Initialization.Undefer_Abort (Self_ID); - Object.Ceiling := System.Any_Priority (Init_Priority); - Object.Compiler_Info := Compiler_Info; - Object.Pending_Action := False; - Object.Call_In_Progress := null; - Object.Entry_Bodies := Entry_Bodies; - Object.Find_Body_Index := Find_Body_Index; - - for E in Object.Entry_Queues'Range loop - Object.Entry_Queues (E).Head := null; - Object.Entry_Queues (E).Tail := null; - end loop; - end Initialize_Protection_Entries; - - ------------------ - -- Lock_Entries -- - ------------------ - - procedure Lock_Entries - (Object : Protection_Entries_Access; Ceiling_Violation : out Boolean) is - begin - -- The lock is made without defering abortion. - - -- Therefore the abortion has to be deferred before calling this - -- routine. This means that the compiler has to generate a Defer_Abort - -- call before the call to Lock. - - -- The caller is responsible for undeferring abortion, and compiler - -- generated calls must be protected with cleanup handlers to ensure - -- that abortion is undeferred in all cases. - - pragma Assert (STPO.Self.Deferral_Level > 0); - Write_Lock (Object.L'Access, Ceiling_Violation); - end Lock_Entries; - - procedure Lock_Entries (Object : Protection_Entries_Access) is - Ceiling_Violation : Boolean; - begin - pragma Assert (STPO.Self.Deferral_Level > 0); - Write_Lock (Object.L'Access, Ceiling_Violation); - - if Ceiling_Violation then - Raise_Exception (Program_Error'Identity, "Ceiling Violation"); - end if; - end Lock_Entries; - - ---------------------------- - -- Lock_Read_Only_Entries -- - ---------------------------- - - procedure Lock_Read_Only_Entries (Object : Protection_Entries_Access) is - Ceiling_Violation : Boolean; - begin - Read_Lock (Object.L'Access, Ceiling_Violation); - - if Ceiling_Violation then - Raise_Exception (Program_Error'Identity, "Ceiling Violation"); - end if; - end Lock_Read_Only_Entries; - - -------------------- - -- Unlock_Entries -- - -------------------- - - procedure Unlock_Entries (Object : Protection_Entries_Access) is - begin - Unlock (Object.L'Access); - end Unlock_Entries; - -end System.Tasking.Protected_Objects.Entries;