#ifndef __XRDOSSMIO_H__ #define __XRDOSSMIO_H__ /******************************************************************************/ /* */ /* X r d o s s M i o . h h */ /* */ /* (c) 2005 by the Board of Trustees of the Leland Stanford, Jr., University */ /* All Rights Reserved */ /* Produced by Andrew Hanushevsky for Stanford University under contract */ /* DE-AC02-76-SFO0515 with the Department of Energy */ /* */ /* This file is part of the XRootD software suite. */ /* */ /* XRootD is free software: you can redistribute it and/or modify it under */ /* the terms of the GNU Lesser General Public License as published by the */ /* Free Software Foundation, either version 3 of the License, or (at your */ /* option) any later version. */ /* */ /* XRootD is distributed in the hope that it will be useful, but WITHOUT */ /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */ /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */ /* License for more details. */ /* */ /* You should have received a copy of the GNU Lesser General Public License */ /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */ /* COPYING (GPL license). If not, see . */ /* */ /* The copyright holder's institutional names and contributor's names may not */ /* be used to endorse or promote products derived from this software without */ /* specific prior written permission of the institution or contributor. */ /******************************************************************************/ #include "XrdSys/XrdSysError.hh" #include "XrdOuc/XrdOucHash.hh" #include "XrdSys/XrdSysPthread.hh" #include "XrdOss/XrdOssMioFile.hh" // The following are options passed to Map() // #define OSSMIO_MLOK 0x0001 #define OSSMIO_MMAP 0x0002 #define OSSMIO_MPRM 0x0004 class XrdOssMio { public: static void Display(XrdSysError &Eroute); static char isAuto() {return MM_chk;} static char isOn() {return MM_on;} static XrdOssMioFile *Map(char *path, int fd, int opts); static void *preLoad(void *arg); static void Recycle(XrdOssMioFile *mp); static void Set(int V_off, int V_preld, int V_check); static void Set(long long V_max); private: static int Reclaim(off_t amount); static int Reclaim(XrdOssMioFile *mp); static XrdOucHash MM_Hash; static XrdSysMutex MM_Mutex; static XrdOssMioFile *MM_Perm; static XrdOssMioFile *MM_Idle; static XrdOssMioFile *MM_IdleLast; static char MM_on; static char MM_chk; static char MM_okmlock; static char MM_preld; static long long MM_max; static long long MM_pagsz; static long long MM_pages; static long long MM_inuse; }; #endif