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XrdPosixFile.hh
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1 #ifndef __XRDPOSIXFILE_HH__
2 #define __XRDPOSIXFILE_HH__
3 /******************************************************************************/
4 /* */
5 /* X r d P o s i x F i l e . h h */
6 /* */
7 /* (c) 2013 by the Board of Trustees of the Leland Stanford, Jr., University */
8 /* All Rights Reserved */
9 /* Produced by Andrew Hanushevsky for Stanford University under contract */
10 /* DE-AC02-76-SFO0515 with the Department of Energy */
11 /* */
12 /* This file is part of the XRootD software suite. */
13 /* */
14 /* XRootD is free software: you can redistribute it and/or modify it under */
15 /* the terms of the GNU Lesser General Public License as published by the */
16 /* Free Software Foundation, either version 3 of the License, or (at your */
17 /* option) any later version. */
18 /* */
19 /* XRootD is distributed in the hope that it will be useful, but WITHOUT */
20 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
21 /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
22 /* License for more details. */
23 /* */
24 /* You should have received a copy of the GNU Lesser General Public License */
25 /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */
26 /* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */
27 /* */
28 /* The copyright holder's institutional names and contributor's names may not */
29 /* be used to endorse or promote products derived from this software without */
30 /* specific prior written permission of the institution or contributor. */
31 /******************************************************************************/
32 
33 #include <errno.h>
34 #include <fcntl.h>
35 #include <sys/time.h>
36 #include <sys/param.h>
37 #include <sys/resource.h>
38 #include <sys/uio.h>
39 
40 #include "XrdCl/XrdClFileSystem.hh"
41 #include "XrdCl/XrdClFile.hh"
42 #include "XrdCl/XrdClURL.hh"
44 
45 #include "XrdOuc/XrdOucCache.hh"
46 
47 #include "XrdPosix/XrdPosixMap.hh"
49 
50 /******************************************************************************/
51 /* X r d P o s i x F i l e C l a s s */
52 /******************************************************************************/
53 
54 class XrdPosixCallBack;
55 class XrdPosixPrepIO;
56 
57 class XrdPosixFile : public XrdPosixObject,
58  public XrdOucCacheIO,
59  public XrdOucCacheIOCD,
61 {
62 public:
63 
67 
68  long long addOffset(long long offs, int updtSz=0)
69  {updMutex.Lock();
70  currOffset += offs;
71  if (updtSz && currOffset > (long long)mySize)
72  mySize = currOffset;
73  long long retOffset = currOffset;
74  updMutex.UnLock();
75  return retOffset;
76  }
77 
78 //atic XrdPosixFile *Alloc(const char *path, XrdPosixCallBack *cbP, int Opts);
79 
80 static void* DelayedDestroy(void*);
81 
82 static void DelayedDestroy(XrdPosixFile *fp);
83 
84  bool Close(XrdCl::XRootDStatus &Status);
85 
86  bool Detach(XrdOucCacheIOCD &cdP) {(void)cdP; return true;}
87 
88  void DetachDone() {unRef();}
89 
90  bool Finalize(XrdCl::XRootDStatus *Status);
91 
92  long long FSize() {AtomicBeg(updMutex);
93  long long retSize = AtomicGet(mySize);
95  return retSize;
96  }
97 
98  int Fstat(struct stat &buf);
99 
100  const char *Location();
101 
102  void HandleResponse(XrdCl::XRootDStatus *status,
103  XrdCl::AnyObject *response);
104 
105  void updLock() {updMutex.Lock();}
106 
108 
110 
111  const char *Origin() {return fOpen;}
112 
113  const char *Path() {return fPath;}
114 
115  int Read (char *Buff, long long Offs, int Len);
116 
117  void Read (XrdOucCacheIOCB &iocb, char *buff, long long offs,
118  int rlen);
119 
120  int ReadV (const XrdOucIOVec *readV, int n);
121 
122  void ReadV (XrdOucCacheIOCB &iocb, const XrdOucIOVec *readV,
123  int n);
124 
125  long long setOffset(long long offs)
126  {updMutex.Lock();
127  currOffset = offs;
128  updMutex.UnLock();
129  return offs;
130  }
131 
132  bool Stat(XrdCl::XRootDStatus &Status, bool force=false);
133 
134  int Sync();
135 
136  void Sync(XrdOucCacheIOCB &iocb);
137 
138  int Trunc(long long Offset);
139 
140  void UpdtSize(size_t newsz)
141  {updMutex.Lock();
142  if (newsz > mySize) mySize = newsz;
143  updMutex.UnLock();
144  }
145 
146  using XrdPosixObject::Who;
147 
148  bool Who(XrdPosixFile **fileP)
149  {*fileP = this; return true;}
150 
151  int Write(char *Buff, long long Offs, int Len);
152 
153  void Write(XrdOucCacheIOCB &iocb, char *buff, long long offs,
154  int wlen);
155 
156  size_t mySize;
157  time_t myMtime;
158  dev_t myRdev;
159  ino_t myInode;
160  mode_t myMode;
161 
162 static
167 static char *sfSFX;
168 static short sfSLN;
169 static bool ddPosted;
170 static int ddNum;
171 
172 static const int realFD = 1;
173 static const int isStrm = 2;
174 static const int isUpdt = 4;
175 
176  XrdPosixFile(bool &aOK, const char *path, XrdPosixCallBack *cbP=0,
177  int Opts=0);
178  ~XrdPosixFile();
179 
180 private:
181 
182 union {long long currOffset;
185  };
186 
187 char *fPath;
188 char *fOpen;
189 char *fLoc;
190 union {int cOpt; int numTries;};
191 char isStream;
192 };
193 #endif
bool Stat(XrdCl::XRootDStatus &Status, bool force=false)
XrdSysRecMutex updMutex
Definition: XrdPosixObject.hh:94
Definition: XrdClAnyObject.hh:32
#define AtomicGet(x)
Definition: XrdSysAtomics.hh:71
virtual bool Who(XrdPosixDir **dirP)
Definition: XrdPosixObject.hh:86
static short sfSLN
Definition: XrdPosixFile.hh:168
char * fLoc
Definition: XrdPosixFile.hh:189
Definition: XrdPosixFile.hh:57
long long currOffset
Definition: XrdPosixFile.hh:182
long long Offset()
Definition: XrdPosixFile.hh:109
int Fstat(struct stat &buf)
time_t myMtime
Definition: XrdPosixFile.hh:157
int ReadV(const XrdOucIOVec *readV, int n)
XrdCl::File clFile
Definition: XrdPosixFile.hh:66
Definition: XrdOucCache.hh:102
mode_t myMode
Definition: XrdPosixFile.hh:160
long long addOffset(long long offs, int updtSz=0)
Definition: XrdPosixFile.hh:68
XrdPosixFile(bool &aOK, const char *path, XrdPosixCallBack *cbP=0, int Opts=0)
Definition: XrdPosixObject.hh:41
char isStream
Definition: XrdPosixFile.hh:191
void updLock()
Definition: XrdPosixFile.hh:105
static void * DelayedDestroy(void *)
static const int isStrm
Definition: XrdPosixFile.hh:173
#define AtomicBeg(Mtx)
Definition: XrdSysAtomics.hh:63
Definition: XrdOucCache.hh:79
const char * Origin()
Definition: XrdPosixFile.hh:111
int Read(char *Buff, long long Offs, int Len)
char * fOpen
Definition: XrdPosixFile.hh:188
bool Detach(XrdOucCacheIOCD &cdP)
Definition: XrdPosixFile.hh:86
Definition: XrdSysPthread.hh:165
void UpdtSize(size_t newsz)
Definition: XrdPosixFile.hh:140
int Trunc(long long Offset)
A file.
Definition: XrdClFile.hh:44
XrdPosixFile * nextFile
Definition: XrdPosixFile.hh:184
#define AtomicEnd(Mtx)
Definition: XrdSysAtomics.hh:64
long long setOffset(long long offs)
Definition: XrdPosixFile.hh:125
XrdPosixPrepIO * PrepIO
Definition: XrdPosixFile.hh:65
const char * Path()
Definition: XrdPosixFile.hh:113
static XrdSysMutex ddMutex
Definition: XrdPosixFile.hh:164
static XrdPosixFile * ddLost
Definition: XrdPosixFile.hh:166
Definition: XrdSysPthread.hh:403
#define AtomicRet(mtx, x)
Definition: XrdSysAtomics.hh:76
bool Who(XrdPosixFile **fileP)
Definition: XrdPosixFile.hh:148
Request status.
Definition: XrdClXRootDResponses.hh:214
An abstract class to define a callback for Open() call.
Definition: XrdPosixCallBack.hh:51
Definition: XrdOucIOVec.hh:40
static bool ddPosted
Definition: XrdPosixFile.hh:169
Definition: XrdPosixPrepIO.hh:38
size_t mySize
Definition: XrdPosixFile.hh:156
Definition: XrdOucCache.hh:50
static XrdPosixFile * ddList
Definition: XrdPosixFile.hh:165
Handle an async response.
Definition: XrdClXRootDResponses.hh:974
#define stat(a, b)
Definition: XrdPosix.hh:96
void Lock()
Definition: XrdSysPthread.hh:220
ino_t myInode
Definition: XrdPosixFile.hh:159
XrdOucCacheIO * XCio
Definition: XrdPosixFile.hh:64
dev_t myRdev
Definition: XrdPosixFile.hh:158
static XrdSysSemaphore ddSem
Definition: XrdPosixFile.hh:163
char * fPath
Definition: XrdPosixFile.hh:187
static const int isUpdt
Definition: XrdPosixFile.hh:174
bool Close(XrdCl::XRootDStatus &Status)
void HandleResponse(XrdCl::XRootDStatus *status, XrdCl::AnyObject *response)
bool Finalize(XrdCl::XRootDStatus *Status)
static const int realFD
Definition: XrdPosixFile.hh:172
long long FSize()
Definition: XrdPosixFile.hh:92
static int ddNum
Definition: XrdPosixFile.hh:170
const char * Location()
void updUnLock()
Definition: XrdPosixFile.hh:107
XrdPosixCallBack * theCB
Definition: XrdPosixFile.hh:183
int Write(char *Buff, long long Offs, int Len)
void UnLock()
Definition: XrdSysPthread.hh:222
static char * sfSFX
Definition: XrdPosixFile.hh:167
int cOpt
Definition: XrdPosixFile.hh:190
int numTries
Definition: XrdPosixFile.hh:190
void DetachDone()
Indicate that the CacheIO object has been detached.
Definition: XrdPosixFile.hh:88
void unRef()
Definition: XrdPosixObject.hh:67