diff options
Diffstat (limited to 'gcc/ada/s-gloloc.adb')
| -rw-r--r-- | gcc/ada/s-gloloc.adb | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/gcc/ada/s-gloloc.adb b/gcc/ada/s-gloloc.adb deleted file mode 100644 index 6dfc5277a7b..00000000000 --- a/gcc/ada/s-gloloc.adb +++ /dev/null @@ -1,149 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- 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) 1999-2015, Free Software Foundation, 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 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. -- --- -- ------------------------------------------------------------------------------- - -with System.Soft_Links; - -package body System.Global_Locks is - - type String_Access is access String; - - Dir_Separator : Character; - pragma Import (C, Dir_Separator, "__gnat_dir_separator"); - - type Lock_File_Entry is record - Dir : String_Access; - File : String_Access; - end record; - - Last_Lock : Lock_Type := Null_Lock; - Lock_Table : array (Lock_Type range 1 .. 15) of Lock_File_Entry; - - procedure Lock_File - (Dir : String; - File : String; - Wait : Duration := 0.1; - Retries : Natural := Natural'Last); - -- Create a lock file File in directory Dir. If the file cannot be - -- locked because someone already owns the lock, this procedure - -- waits Wait seconds and retries at most Retries times. If the file - -- still cannot be locked, Lock_Error is raised. The default is to try - -- every second, almost forever (Natural'Last times). - - ------------------ - -- Acquire_Lock -- - ------------------ - - procedure Acquire_Lock (Lock : in out Lock_Type) is - begin - Lock_File - (Lock_Table (Lock).Dir.all, - Lock_Table (Lock).File.all); - end Acquire_Lock; - - ----------------- - -- Create_Lock -- - ----------------- - - procedure Create_Lock (Lock : out Lock_Type; Name : String) is - L : Lock_Type; - - begin - System.Soft_Links.Lock_Task.all; - Last_Lock := Last_Lock + 1; - L := Last_Lock; - System.Soft_Links.Unlock_Task.all; - - if L > Lock_Table'Last then - raise Lock_Error; - end if; - - for J in reverse Name'Range loop - if Name (J) = Dir_Separator then - Lock_Table (L).Dir := new String'(Name (Name'First .. J - 1)); - Lock_Table (L).File := new String'(Name (J + 1 .. Name'Last)); - exit; - end if; - end loop; - - if Lock_Table (L).Dir = null then - Lock_Table (L).Dir := new String'("."); - Lock_Table (L).File := new String'(Name); - end if; - - Lock := L; - end Create_Lock; - - --------------- - -- Lock_File -- - --------------- - - procedure Lock_File - (Dir : String; - File : String; - Wait : Duration := 0.1; - Retries : Natural := Natural'Last) - is - C_Dir : aliased String := Dir & ASCII.NUL; - C_File : aliased String := File & ASCII.NUL; - - function Try_Lock (Dir, File : System.Address) return Integer; - pragma Import (C, Try_Lock, "__gnat_try_lock"); - - begin - for I in 0 .. Retries loop - if Try_Lock (C_Dir'Address, C_File'Address) = 1 then - return; - end if; - - exit when I = Retries; - delay Wait; - end loop; - - raise Lock_Error; - end Lock_File; - - ------------------ - -- Release_Lock -- - ------------------ - - procedure Release_Lock (Lock : in out Lock_Type) is - S : aliased String := - Lock_Table (Lock).Dir.all & Dir_Separator & - Lock_Table (Lock).File.all & ASCII.NUL; - - procedure unlink (A : System.Address); - pragma Import (C, unlink, "unlink"); - - begin - unlink (S'Address); - end Release_Lock; - -end System.Global_Locks; |