00001 #ifndef __SFS_XIO_H__ 00002 #define __SFS_XIO_H__ 00003 /******************************************************************************/ 00004 /* */ 00005 /* X r d S f s X i o . h h */ 00006 /* */ 00007 /* (c) 2013 by the Board of Trustees of the Leland Stanford, Jr., University */ 00008 /* Produced by Andrew Hanushevsky for Stanford University under contract */ 00009 /* DE-AC02-76-SFO0515 with the Department of Energy */ 00010 /* */ 00011 /* This file is part of the XRootD software suite. */ 00012 /* */ 00013 /* XRootD is free software: you can redistribute it and/or modify it under */ 00014 /* the terms of the GNU Lesser General Public License as published by the */ 00015 /* Free Software Foundation, either version 3 of the License, or (at your */ 00016 /* option) any later version. */ 00017 /* */ 00018 /* XRootD is distributed in the hope that it will be useful, but WITHOUT */ 00019 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */ 00020 /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */ 00021 /* License for more details. */ 00022 /* */ 00023 /* You should have received a copy of the GNU Lesser General Public License */ 00024 /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */ 00025 /* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */ 00026 /* */ 00027 /* The copyright holder's institutional names and contributor's names may not */ 00028 /* be used to endorse or promote products derived from this software without */ 00029 /* specific prior written permission of the institution or contributor. */ 00030 /******************************************************************************/ 00031 00032 //----------------------------------------------------------------------------- 00043 //----------------------------------------------------------------------------- 00044 00045 //----------------------------------------------------------------------------- 00048 //----------------------------------------------------------------------------- 00049 00050 class XrdSfsXioHandle 00051 { 00052 public: 00053 00054 //----------------------------------------------------------------------------- 00061 //----------------------------------------------------------------------------- 00062 00063 virtual char *Buffer(int **blen=0) = 0; 00064 00065 //----------------------------------------------------------------------------- 00068 //----------------------------------------------------------------------------- 00069 00070 virtual void Recycle() = 0; 00071 00072 XrdSfsXioHandle() {} 00073 virtual ~XrdSfsXioHandle() {} 00074 }; 00075 00076 /******************************************************************************/ 00077 /* C l a s s X r d S f s X i o */ 00078 /******************************************************************************/ 00079 00080 class XrdSfsXio 00081 { 00082 public: 00083 00084 //----------------------------------------------------------------------------- 00086 //----------------------------------------------------------------------------- 00087 00088 enum XioStatus {allOK = 0, 00089 BadBuff, 00090 BadHandle, 00091 NotWrite, 00092 TooMany 00093 }; 00094 00095 //----------------------------------------------------------------------------- 00110 //----------------------------------------------------------------------------- 00111 00112 virtual XioStatus Swap(const char * curBuff, 00113 XrdSfsXioHandle *&curHand, 00114 XrdSfsXioHandle * oldHand=0 00115 ) = 0; 00116 00117 //----------------------------------------------------------------------------- 00119 //----------------------------------------------------------------------------- 00120 00121 XrdSfsXio() {} 00122 virtual ~XrdSfsXio() {} 00123 }; 00124 #endif