Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnarl/s-tasque.ads @ 111:04ced10e8804
gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | |
| children | 84e7813d76e9 |
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| 68:561a7518be6b | 111:04ced10e8804 |
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| 1 ------------------------------------------------------------------------------ | |
| 2 -- -- | |
| 3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- | |
| 4 -- -- | |
| 5 -- S Y S T E M . T A S K I N G . Q U E U I N G -- | |
| 6 -- -- | |
| 7 -- S p e c -- | |
| 8 -- -- | |
| 9 -- Copyright (C) 1992-2017, Free Software Foundation, Inc. -- | |
| 10 -- -- | |
| 11 -- GNARL is free software; you can redistribute it and/or modify it under -- | |
| 12 -- terms of the GNU General Public License as published by the Free Soft- -- | |
| 13 -- ware Foundation; either version 3, or (at your option) any later ver- -- | |
| 14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- | |
| 15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
| 16 -- or FITNESS FOR A PARTICULAR PURPOSE. -- | |
| 17 -- -- | |
| 18 -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
| 19 -- additional permissions described in the GCC Runtime Library Exception, -- | |
| 20 -- version 3.1, as published by the Free Software Foundation. -- | |
| 21 -- -- | |
| 22 -- You should have received a copy of the GNU General Public License and -- | |
| 23 -- a copy of the GCC Runtime Library Exception along with this program; -- | |
| 24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
| 25 -- <http://www.gnu.org/licenses/>. -- | |
| 26 -- -- | |
| 27 -- GNARL was developed by the GNARL team at Florida State University. -- | |
| 28 -- Extensive contributions were provided by Ada Core Technologies, Inc. -- | |
| 29 -- -- | |
| 30 ------------------------------------------------------------------------------ | |
| 31 | |
| 32 with System.Tasking.Protected_Objects.Entries; | |
| 33 | |
| 34 package System.Tasking.Queuing is | |
| 35 | |
| 36 package POE renames System.Tasking.Protected_Objects.Entries; | |
| 37 | |
| 38 procedure Broadcast_Program_Error | |
| 39 (Self_ID : Task_Id; | |
| 40 Object : POE.Protection_Entries_Access; | |
| 41 Pending_Call : Entry_Call_Link; | |
| 42 RTS_Locked : Boolean := False); | |
| 43 -- Raise Program_Error in all tasks calling the protected entries of Object | |
| 44 -- The exception will not be raised immediately for the calling task; it | |
| 45 -- will be deferred until it calls Check_Exception. | |
| 46 -- RTS_Locked indicates whether the global RTS lock is taken (only | |
| 47 -- relevant if Single_Lock is True). | |
| 48 | |
| 49 procedure Enqueue (E : in out Entry_Queue; Call : Entry_Call_Link); | |
| 50 -- Enqueue Call at the end of entry_queue E | |
| 51 | |
| 52 procedure Dequeue (E : in out Entry_Queue; Call : Entry_Call_Link); | |
| 53 -- Dequeue Call from entry_queue E | |
| 54 | |
| 55 function Head (E : Entry_Queue) return Entry_Call_Link; | |
| 56 pragma Inline (Head); | |
| 57 -- Return the head of entry_queue E | |
| 58 | |
| 59 procedure Dequeue_Head | |
| 60 (E : in out Entry_Queue; | |
| 61 Call : out Entry_Call_Link); | |
| 62 -- Remove and return the head of entry_queue E | |
| 63 | |
| 64 function Onqueue (Call : Entry_Call_Link) return Boolean; | |
| 65 pragma Inline (Onqueue); | |
| 66 -- Return True if Call is on any entry_queue at all | |
| 67 | |
| 68 function Count_Waiting (E : Entry_Queue) return Natural; | |
| 69 -- Return number of calls on the waiting queue of E | |
| 70 | |
| 71 procedure Select_Task_Entry_Call | |
| 72 (Acceptor : Task_Id; | |
| 73 Open_Accepts : Accept_List_Access; | |
| 74 Call : out Entry_Call_Link; | |
| 75 Selection : out Select_Index; | |
| 76 Open_Alternative : out Boolean); | |
| 77 -- Select an entry for rendezvous. On exit: | |
| 78 -- Call will contain a pointer to the entry call record selected; | |
| 79 -- Selection will contain the index of the alternative selected | |
| 80 -- Open_Alternative will be True if there were any open alternatives | |
| 81 | |
| 82 procedure Select_Protected_Entry_Call | |
| 83 (Self_ID : Task_Id; | |
| 84 Object : POE.Protection_Entries_Access; | |
| 85 Call : out Entry_Call_Link); | |
| 86 -- Select an entry of a protected object | |
| 87 | |
| 88 procedure Enqueue_Call (Entry_Call : Entry_Call_Link); | |
| 89 procedure Dequeue_Call (Entry_Call : Entry_Call_Link); | |
| 90 -- Enqueue (dequeue) the call to (from) whatever server they are | |
| 91 -- calling, whether a task or a protected object. | |
| 92 | |
| 93 procedure Requeue_Call_With_New_Prio | |
| 94 (Entry_Call : Entry_Call_Link; Prio : System.Any_Priority); | |
| 95 -- Change Priority of the call and re insert to the queue when priority | |
| 96 -- queueing is in effect. When FIFO is enforced, this routine | |
| 97 -- should not have any effect. | |
| 98 | |
| 99 end System.Tasking.Queuing; |