Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnat/s-gloloc.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 COMPILER COMPONENTS -- | |
| 4 -- -- | |
| 5 -- S Y S T E M . G L O B A L _ L O C K S -- | |
| 6 -- -- | |
| 7 -- S p e c -- | |
| 8 -- -- | |
| 9 -- Copyright (C) 1999-2017, Free Software Foundation, Inc. -- | |
| 10 -- -- | |
| 11 -- GNAT 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 -- GNAT was originally developed by the GNAT team at New York University. -- | |
| 28 -- Extensive contributions were provided by Ada Core Technologies Inc. -- | |
| 29 -- -- | |
| 30 ------------------------------------------------------------------------------ | |
| 31 | |
| 32 -- This package contains the necessary routines to provide | |
| 33 -- reliable system wide locking capability. | |
| 34 | |
| 35 package System.Global_Locks is | |
| 36 | |
| 37 Lock_Error : exception; | |
| 38 -- Exception raised if a request cannot be executed on a lock | |
| 39 | |
| 40 type Lock_Type is private; | |
| 41 -- Such a lock is a global lock between partitions. This lock is | |
| 42 -- uniquely defined between the partitions because of its name. | |
| 43 | |
| 44 Null_Lock : constant Lock_Type; | |
| 45 -- This needs comments ??? | |
| 46 | |
| 47 procedure Create_Lock (Lock : out Lock_Type; Name : String); | |
| 48 -- Create or retrieve a global lock for the current partition using | |
| 49 -- its Name. | |
| 50 | |
| 51 procedure Acquire_Lock (Lock : in out Lock_Type); | |
| 52 -- If the lock cannot be acquired because someone already owns it, this | |
| 53 -- procedure is supposed to wait and retry forever. | |
| 54 | |
| 55 procedure Release_Lock (Lock : in out Lock_Type); | |
| 56 | |
| 57 private | |
| 58 | |
| 59 type Lock_Type is new Natural; | |
| 60 | |
| 61 Null_Lock : constant Lock_Type := 0; | |
| 62 | |
| 63 end System.Global_Locks; |