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File indexing completed on 2025-01-30 10:27:55
0001 #ifndef __XRDOUCPINOBJECT_HH__ 0002 #define __XRDOUCPINOBJECT_HH__ 0003 /******************************************************************************/ 0004 /* */ 0005 /* X r d O u c P i n O b j e c t . h h */ 0006 /* */ 0007 /* (c) 2020 by the Board of Trustees of the Leland Stanford, Jr., University */ 0008 /* Produced by Andrew Hanushevsky for Stanford University under contract */ 0009 /* DE-AC02-76-SFO0515 with the Department of Energy */ 0010 /* */ 0011 /* This file is part of the XRootD software suite. */ 0012 /* */ 0013 /* XRootD is free software: you can redistribute it and/or modify it under */ 0014 /* the terms of the GNU Lesser General Public License as published by the */ 0015 /* Free Software Foundation, either version 3 of the License, or (at your */ 0016 /* option) any later version. */ 0017 /* */ 0018 /* XRootD is distributed in the hope that it will be useful, but WITHOUT */ 0019 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */ 0020 /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */ 0021 /* License for more details. */ 0022 /* */ 0023 /* You should have received a copy of the GNU Lesser General Public License */ 0024 /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */ 0025 /* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */ 0026 /* */ 0027 /* The copyright holder's institutional names and contributor's names may not */ 0028 /* be used to endorse or promote products derived from this software without */ 0029 /* specific prior written permission of the institution or contributor. */ 0030 /******************************************************************************/ 0031 0032 /*! The XrdOucPinObject defines a generic interface to obtain an instance of a 0033 plugin. Post R5 plugins must have an instance of this class in the shared 0034 library that implements the plugin named in the template parameter. The 0035 plugin handler calls getInstance() to obtain an actual instance of it. 0036 */ 0037 0038 class XrdOucEnv; 0039 class XrdSysLogger; 0040 0041 template<class T> 0042 class XrdOucPinObject 0043 { 0044 public: 0045 0046 //------------------------------------------------------------------------------ 0047 //! Get the an instance of a plugin. 0048 //! 0049 //! @param parms Pointer to any parameters, may be nil or the null string. 0050 //! @param envR Reference to the environment. If the server was started with 0051 //! a configuration file then key "configFN" holds its path. 0052 //! @param logR Pointer to logging object that should be assocaited with 0053 //! and XrdSysError object to relay messages. 0054 //! @param prevP Pointer to the previous instance if stacked, else nil. 0055 //------------------------------------------------------------------------------ 0056 0057 virtual 0058 T *getInstance(const char *parms, 0059 XrdOucEnv &envR, 0060 XrdSysLogger &logR, 0061 T *prevP) = 0; 0062 0063 //------------------------------------------------------------------------------ 0064 //! Constructor & Destructor 0065 //------------------------------------------------------------------------------ 0066 0067 XrdOucPinObject() {} 0068 0069 virtual ~XrdOucPinObject() {} 0070 }; 0071 #endif
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