00001 #ifndef __PSS_AIOCB_HH__ 00002 #define __PSS_AIOCB_HH__ 00003 /******************************************************************************/ 00004 /* */ 00005 /* X r d P s s A i o C B . h h */ 00006 /* */ 00007 /* (c) 2016 by the Board of Trustees of the Leland Stanford, Jr., University */ 00008 /* All Rights Reserved */ 00009 /* Produced by Andrew Hanushevsky for Stanford University under contract */ 00010 /* DE-AC02-76-SFO0515 with the Department of Energy */ 00011 /* */ 00012 /* This file is part of the XRootD software suite. */ 00013 /* */ 00014 /* XRootD is free software: you can redistribute it and/or modify it under */ 00015 /* the terms of the GNU Lesser General Public License as published by the */ 00016 /* Free Software Foundation, either version 3 of the License, or (at your */ 00017 /* option) any later version. */ 00018 /* */ 00019 /* XRootD is distributed in the hope that it will be useful, but WITHOUT */ 00020 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */ 00021 /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */ 00022 /* License for more details. */ 00023 /* */ 00024 /* You should have received a copy of the GNU Lesser General Public License */ 00025 /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */ 00026 /* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */ 00027 /* */ 00028 /* The copyright holder's institutional names and contributor's names may not */ 00029 /* be used to endorse or promote products derived from this software without */ 00030 /* specific prior written permission of the institution or contributor. */ 00031 /******************************************************************************/ 00032 00033 #include "XrdPosix/XrdPosixCallBack.hh" 00034 #include "XrdSys/XrdSysPthread.hh" 00035 00036 class XrdSfsAio; 00037 00038 class XrdPssAioCB : public XrdPosixCallBackIO 00039 { 00040 public: 00041 00042 static XrdPssAioCB *Alloc(XrdSfsAio *aiop, bool isWr); 00043 00044 virtual void Complete(ssize_t Result); 00045 00046 void Recycle(); 00047 00048 static void SetMax(int mval) {maxFree = mval;} 00049 00050 private: 00051 XrdPssAioCB() : theAIOP(0), isWrite(false) {} 00052 virtual ~XrdPssAioCB() {} 00053 00054 static XrdSysMutex myMutex; 00055 static XrdPssAioCB *freeCB; 00056 static int numFree; 00057 static int maxFree; 00058 00059 union {XrdSfsAio *theAIOP; 00060 XrdPssAioCB *next; 00061 }; 00062 bool isWrite; 00063 }; 00064 #endif