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author | Jing Yu <jingyu@google.com> | 2011-12-19 16:56:54 -0800 |
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committer | Jing Yu <jingyu@google.com> | 2011-12-19 16:56:54 -0800 |
commit | 40d7cd0fd78fe2004e2a53c4618c148339b02733 (patch) | |
tree | 5874557a6c86a1f564a03e5f28b266e31bc3759c /gcc-4.6/gcc/ada/g-locfil.ads | |
parent | fe2afdf3f3701489c05d2a7509752d6f0c7616f7 (diff) | |
download | toolchain_gcc-40d7cd0fd78fe2004e2a53c4618c148339b02733.tar.gz toolchain_gcc-40d7cd0fd78fe2004e2a53c4618c148339b02733.tar.bz2 toolchain_gcc-40d7cd0fd78fe2004e2a53c4618c148339b02733.zip |
Add gcc-4.6. Synced to @180989
Change-Id: Ie3676586e1d8e3c8cd9f07d022f450d05fa08439
svn://gcc.gnu.org/svn/gcc/branches/google/gcc-4_6-mobile
Diffstat (limited to 'gcc-4.6/gcc/ada/g-locfil.ads')
-rw-r--r-- | gcc-4.6/gcc/ada/g-locfil.ads | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/gcc-4.6/gcc/ada/g-locfil.ads b/gcc-4.6/gcc/ada/g-locfil.ads new file mode 100644 index 000000000..9dde8fb45 --- /dev/null +++ b/gcc-4.6/gcc/ada/g-locfil.ads @@ -0,0 +1,74 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- G N A T . L O C K _ F I L E S -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1995-2008, 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 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, 51 Franklin Street, Fifth Floor, -- +-- Boston, MA 02110-1301, 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 was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This package contains the necessary routines for using files for the +-- purpose of providing reliable system wide locking capability. + +package GNAT.Lock_Files is + pragma Preelaborate; + + Lock_Error : exception; + -- Exception raised if file cannot be locked + + subtype Path_Name is String; + -- Pathname is used by all services provided in this unit to specified + -- directory name and file name. On DOS based systems both directory + -- separators are handled (i.e. slash and backslash). + + procedure Lock_File + (Directory : Path_Name; + Lock_File_Name : Path_Name; + Wait : Duration := 1.0; + Retries : Natural := Natural'Last); + -- Create a lock file Lock_File_Name in directory Directory. 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). The full path of + -- the file is constructed by concatenating Directory and Lock_File_Name. + -- Directory can optionally terminate with a directory separator. + + procedure Lock_File + (Lock_File_Name : Path_Name; + Wait : Duration := 1.0; + Retries : Natural := Natural'Last); + -- See above. The full lock file path is given as one string + + procedure Unlock_File (Directory : Path_Name; Lock_File_Name : Path_Name); + -- Unlock a file. Directory can optionally terminate with a directory + -- separator. + + procedure Unlock_File (Lock_File_Name : Path_Name); + -- Unlock a file whose full path is given in Lock_File_Name + +end GNAT.Lock_Files; |