+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- S Y S T E M . G L O B A L _ L O C K S --
--- --
--- B o d y --
--- --
--- $Revision: 1.1 $
--- --
--- Copyright (C) 1999-2001 Ada Core Technologies, Inc. --
--- --
--- 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 2, 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. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; 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. --
--- --
--- GNAT is maintained by Ada Core Technologies Inc (http://www.gnat.com). --
--- --
-------------------------------------------------------------------------------
-
--- This implementation is specific to NT.
-
-with GNAT.Task_Lock;
-
-with Interfaces.C.Strings;
-with System.OS_Interface;
-
-package body System.Global_Locks is
-
- package TSL renames GNAT.Task_Lock;
- package OSI renames System.OS_Interface;
- package ICS renames Interfaces.C.Strings;
-
- subtype Lock_File_Entry is OSI.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 : in 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, OSI.BOOL (False), ICS.New_String (Name));
- Lock := L;
- end Create_Lock;
-
- ------------------
- -- Acquire_Lock --
- ------------------
-
- procedure Acquire_Lock
- (Lock : in out Lock_Type)
- is
- use type OSI.DWORD;
-
- Res : OSI.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 OSI.BOOL;
-
- Res : OSI.BOOL;
- begin
- Res := OSI.ReleaseMutex (Lock_Table (Lock));
-
- if Res = OSI.False then
- raise Lock_Error;
- end if;
- end Release_Lock;
-
-end System.Global_Locks;
projects / msp430-gcc.git / blobdiff