XrdClEnv.hh

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00001 //------------------------------------------------------------------------------
00002 // Copyright (c) 2011-2012 by European Organization for Nuclear Research (CERN)
00003 // Author: Lukasz Janyst <ljanyst@cern.ch>
00004 //------------------------------------------------------------------------------
00005 // XRootD is free software: you can redistribute it and/or modify
00006 // it under the terms of the GNU Lesser General Public License as published by
00007 // the Free Software Foundation, either version 3 of the License, or
00008 // (at your option) any later version.
00009 //
00010 // XRootD is distributed in the hope that it will be useful,
00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 // GNU General Public License for more details.
00014 //
00015 // You should have received a copy of the GNU Lesser General Public License
00016 // along with XRootD.  If not, see <http://www.gnu.org/licenses/>.
00017 //------------------------------------------------------------------------------
00018 
00019 #ifndef __XRD_CL_ENV_HH__
00020 #define __XRD_CL_ENV_HH__
00021 
00022 #include <map>
00023 #include <string>
00024 #include <utility>
00025 
00026 #include "XrdSys/XrdSysPthread.hh"
00027 
00028 namespace XrdCl
00029 {
00030   //----------------------------------------------------------------------------
00035   //----------------------------------------------------------------------------
00036   class Env
00037   {
00038     public:
00039       //------------------------------------------------------------------------
00041       //------------------------------------------------------------------------
00042       virtual ~Env() {}
00043 
00044       //------------------------------------------------------------------------
00048       //------------------------------------------------------------------------
00049       bool GetString( const std::string &key, std::string &value );
00050 
00051       //------------------------------------------------------------------------
00056       //------------------------------------------------------------------------
00057       bool PutString( const std::string &key, const std::string &value );
00058 
00059       //------------------------------------------------------------------------
00063       //------------------------------------------------------------------------
00064       bool GetInt( const std::string &key, int &value );
00065 
00066       //------------------------------------------------------------------------
00071       //------------------------------------------------------------------------
00072       bool PutInt( const std::string &key, int value );
00073 
00074       //------------------------------------------------------------------------
00079       //------------------------------------------------------------------------
00080       bool ImportInt( const std::string &key, const std::string &shellKey );
00081 
00082       //------------------------------------------------------------------------
00087       //------------------------------------------------------------------------
00088       bool ImportString( const std::string &key, const std::string &shellKey );
00089 
00090       //------------------------------------------------------------------------
00091       // Lock the environment for writing
00092       //------------------------------------------------------------------------
00093       void WriteLock()
00094       {
00095         pLock.WriteLock();
00096       }
00097 
00098       //------------------------------------------------------------------------
00099       // Unlock the environment
00100       //------------------------------------------------------------------------
00101       void UnLock()
00102       {
00103         pLock.UnLock();
00104       }
00105 
00106       //------------------------------------------------------------------------
00107       // Re-initialize the lock
00108       //------------------------------------------------------------------------
00109       void ReInitializeLock()
00110       {
00111         // this is really shaky, but seems to work on linux and fork safety
00112         // is probably not required anywhere else
00113         pLock.UnLock();
00114         pLock.ReInitialize();
00115       }
00116 
00117     private:
00118       std::string GetEnv( const std::string &key );
00119       typedef std::map<std::string, std::pair<std::string, bool> > StringMap;
00120       typedef std::map<std::string, std::pair<int, bool> >         IntMap;
00121 
00122       XrdSysRWLock pLock;
00123       StringMap    pStringMap;
00124       IntMap       pIntMap;
00125   };
00126 }
00127 
00128 #endif // __XRD_CL_ENV_HH__

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