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Diffstat (limited to 'gcc-4.2.1/gcc/ada/s-tasque.ads')
| -rw-r--r-- | gcc-4.2.1/gcc/ada/s-tasque.ads | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/gcc-4.2.1/gcc/ada/s-tasque.ads b/gcc-4.2.1/gcc/ada/s-tasque.ads new file mode 100644 index 000000000..d8a23a04a --- /dev/null +++ b/gcc-4.2.1/gcc/ada/s-tasque.ads @@ -0,0 +1,101 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- +-- -- +-- S Y S T E M . T A S K I N G . Q U E U I N G -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1992-2006, 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- -- +-- 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, 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. -- +-- -- +-- GNARL was developed by the GNARL team at Florida State University. -- +-- Extensive contributions were provided by Ada Core Technologies, Inc. -- +-- -- +------------------------------------------------------------------------------ + +with System.Tasking.Protected_Objects.Entries; + +package System.Tasking.Queuing is + + package POE renames System.Tasking.Protected_Objects.Entries; + + procedure Broadcast_Program_Error + (Self_ID : Task_Id; + Object : POE.Protection_Entries_Access; + Pending_Call : Entry_Call_Link; + RTS_Locked : Boolean := False); + -- Raise Program_Error in all tasks calling the protected entries of Object + -- The exception will not be raised immediately for the calling task; it + -- will be deferred until it calls Check_Exception. + -- RTS_Locked indicates whether the global RTS lock is taken (only + -- relevant if Single_Lock is True). + + procedure Enqueue (E : in out Entry_Queue; Call : Entry_Call_Link); + -- Enqueue Call at the end of entry_queue E + + procedure Dequeue (E : in out Entry_Queue; Call : Entry_Call_Link); + -- Dequeue Call from entry_queue E + + function Head (E : Entry_Queue) return Entry_Call_Link; + pragma Inline (Head); + -- Return the head of entry_queue E + + procedure Dequeue_Head + (E : in out Entry_Queue; + Call : out Entry_Call_Link); + -- Remove and return the head of entry_queue E + + function Onqueue (Call : Entry_Call_Link) return Boolean; + pragma Inline (Onqueue); + -- Return True if Call is on any entry_queue at all + + function Count_Waiting (E : Entry_Queue) return Natural; + -- Return number of calls on the waiting queue of E + + procedure Select_Task_Entry_Call + (Acceptor : Task_Id; + Open_Accepts : Accept_List_Access; + Call : out Entry_Call_Link; + Selection : out Select_Index; + Open_Alternative : out Boolean); + -- Select an entry for rendezvous. On exit: + -- Call will contain a pointer to the entry call record selected; + -- Selection will contain the index of the alternative selected + -- Open_Alternative will be True if there were any open alternatives + + procedure Select_Protected_Entry_Call + (Self_ID : Task_Id; + Object : POE.Protection_Entries_Access; + Call : out Entry_Call_Link); + -- Select an entry of a protected object + + procedure Enqueue_Call (Entry_Call : Entry_Call_Link); + procedure Dequeue_Call (Entry_Call : Entry_Call_Link); + -- Enqueue (dequeue) the call to (from) whatever server they are + -- calling, whether a task or a protected object. + + procedure Requeue_Call_With_New_Prio + (Entry_Call : Entry_Call_Link; Prio : System.Any_Priority); + -- Change Priority of the call and re insert to the queue when priority + -- queueing is in effect. When FIFO is inforced, this routine + -- should not have any effect. + +end System.Tasking.Queuing; |