00001 // @(#)root/rfio:$Id: TRFIOFile.h 35330 2010-09-16 12:12:03Z pcanal $ 00002 // Author: Fons Rademakers 20/01/99 + Giulia Taurelli 29/06/2006 00003 00004 /************************************************************************* 00005 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. * 00006 * All rights reserved. * 00007 * * 00008 * For the licensing terms see $ROOTSYS/LICENSE. * 00009 * For the list of contributors see $ROOTSYS/README/CREDITS. * 00010 *************************************************************************/ 00011 00012 #ifndef ROOT_TRFIOFile 00013 #define ROOT_TRFIOFile 00014 00015 /////////////////////////////////////////////////////////////////////////// 00016 // // 00017 // TRFIOFile // 00018 // // 00019 // A TRFIOFile is like a normal TFile except that it reads and writes // 00020 // its data via a rfiod server (for more on the rfiod daemon see // 00021 // http://wwwinfo.cern.ch/pdp/serv/shift.html). TRFIOFile file names // 00022 // are in standard URL format with protocol "rfio". The following are // 00023 // valid TRFIOFile URL's: // 00024 // // 00025 // rfio:/afs/cern.ch/user/r/rdm/galice.root // 00026 // where galice.root is a symlink of the type /shift/.../... // 00027 // rfio:na49db1:/data1/raw.root // 00028 // rfio:/castor/cern.ch/user/r/rdm/test.root // 00029 // // 00030 // If Castor 2.1 is used the file names can be given also in the // 00031 // following ways: // 00032 // // 00033 // rfio://host:port/?path=FILEPATH // 00034 // rfio://host/?path=FILEPATH // 00035 // rfio:///castor?path=FILEPATH // 00036 // rfio://stager_host:stager_port/?path=/castor/cern.ch/user/r/ // 00037 // rdm/bla.root&svcClass=MYSVCLASS&castorVersion=MYCASTORVERSION // 00038 // rfio://stager_host/?path=/castor/cern.ch/user/r/ // 00039 // rdm/bla.root&svcClass=MYSVCLASS&castorVersion=MYCASTORVERSION // 00040 // rfio:///castor?path=/castor/cern.ch/user/r/ // 00041 // rdm/bla.root&svcClass=MYSVCLASS&castorVersion=MYCASTORVERSION // 00042 // // 00043 // path is mandatory as parameter but all the other ones are optional. // 00044 // // 00045 // For the ultimate description of supported urls see: // 00046 // https://twiki.cern.ch/twiki/bin/view/FIOgroup/RfioRootTurl // 00047 // // 00048 /////////////////////////////////////////////////////////////////////////// 00049 00050 #ifndef ROOT_TFile 00051 #include "TFile.h" 00052 #endif 00053 #ifndef ROOT_TSystem 00054 #include "TSystem.h" 00055 #endif 00056 00057 00058 class TRFIOFile : public TFile { 00059 00060 private: 00061 TRFIOFile() { } 00062 00063 // Interface to basic system I/O routines 00064 Int_t SysOpen(const char *pathname, Int_t flags, UInt_t mode); 00065 Int_t SysClose(Int_t fd); 00066 Int_t SysRead(Int_t fd, void *buf, Int_t len); 00067 Int_t SysWrite(Int_t fd, const void *buf, Int_t len); 00068 Long64_t SysSeek(Int_t fd, Long64_t offset, Int_t whence); 00069 Int_t SysStat(Int_t fd, Long_t *id, Long64_t *size, Long_t *flags, Long_t *modtime); 00070 Int_t SysSync(Int_t) { /* no fsync for RFIO */ return 0; } 00071 Bool_t ReadBuffers(char *buf, Long64_t *pos, Int_t *len, Int_t nbuf); 00072 00073 public: 00074 TRFIOFile(const char *url, Option_t *option="", 00075 const char *ftitle="", Int_t compress=1); 00076 ~TRFIOFile(); 00077 00078 Int_t GetErrno() const; 00079 void ResetErrno() const; 00080 00081 ClassDef(TRFIOFile,1) //A ROOT file that reads/writes via a rfiod server 00082 }; 00083 00084 00085 class TRFIOSystem : public TSystem { 00086 00087 private: 00088 void *fDirp; // directory handler 00089 00090 void *GetDirPtr() const { return fDirp; } 00091 00092 public: 00093 TRFIOSystem(); 00094 virtual ~TRFIOSystem() { } 00095 00096 Int_t MakeDirectory(const char *name); 00097 void *OpenDirectory(const char *name); 00098 void FreeDirectory(void *dirp); 00099 const char *GetDirEntry(void *dirp); 00100 Int_t GetPathInfo(const char *path, FileStat_t &buf); 00101 Bool_t AccessPathName(const char *path, EAccessMode mode); 00102 Int_t Unlink(const char *path); 00103 00104 ClassDef(TRFIOSystem,0) // Directory handler for RFIO 00105 }; 00106 00107 #endif
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