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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [s-gloloc-mingw.adb] - Rev 724
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------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S Y S T E M . G L O B A L _ L O C K S -- -- -- -- B o d y -- -- -- -- Copyright (C) 1999-2010, AdaCore -- -- -- -- 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 3, 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. -- -- -- -- As a special exception under Section 7 of GPL version 3, you are granted -- -- additional permissions described in the GCC Runtime Library Exception, -- -- version 3.1, as published by the Free Software Foundation. -- -- -- -- You should have received a copy of the GNU General Public License and -- -- a copy of the GCC Runtime Library Exception along with this program; -- -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- -- <http://www.gnu.org/licenses/>. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This implementation is specific to NT with System.OS_Interface; with System.Task_Lock; with System.Win32; with Interfaces.C.Strings; package body System.Global_Locks is package TSL renames System.Task_Lock; package OSI renames System.OS_Interface; package ICS renames Interfaces.C.Strings; subtype Lock_File_Entry is Win32.HANDLE; Last_Lock : Lock_Type := Null_Lock; Lock_Table : array (Lock_Type range 1 .. 15) of Lock_File_Entry; ----------------- -- Create_Lock -- ----------------- procedure Create_Lock (Lock : out Lock_Type; Name : String) is L : Lock_Type; begin TSL.Lock; Last_Lock := Last_Lock + 1; L := Last_Lock; TSL.Unlock; if L > Lock_Table'Last then raise Lock_Error; end if; Lock_Table (L) := OSI.CreateMutex (null, Win32.FALSE, ICS.New_String (Name)); Lock := L; end Create_Lock; ------------------ -- Acquire_Lock -- ------------------ procedure Acquire_Lock (Lock : in out Lock_Type) is use type Win32.DWORD; Res : Win32.DWORD; begin Res := OSI.WaitForSingleObject (Lock_Table (Lock), OSI.Wait_Infinite); if Res = OSI.WAIT_FAILED then raise Lock_Error; end if; end Acquire_Lock; ------------------ -- Release_Lock -- ------------------ procedure Release_Lock (Lock : in out Lock_Type) is use type Win32.BOOL; Res : Win32.BOOL; begin Res := OSI.ReleaseMutex (Lock_Table (Lock)); if Res = Win32.FALSE then raise Lock_Error; end if; end Release_Lock; end System.Global_Locks;
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