XRootD
XrdFrcReqFile.hh
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1 #ifndef __FRCREQFILE_H__
2 #define __FRCREQFILE_H__
3 /******************************************************************************/
4 /* */
5 /* X r d F r c R e q F i l e . h h */
6 /* */
7 /* (c) 2010 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 "XrdFrc/XrdFrcRequest.hh"
34 #include "XrdSys/XrdSysPthread.hh"
35 
37 {
38 public:
39 
40  void Add(XrdFrcRequest *rP);
41 
42  void Can(XrdFrcRequest *rP);
43 
44  void Del(XrdFrcRequest *rP);
45 
46  int Get(XrdFrcRequest *rP);
47 
48  int Init();
49 
50  char *List(char *Buff, int bsz, int &Offs,
51  XrdFrcRequest::Item *ITList=0, int ITNum=0);
52 
53  void ListL(XrdFrcRequest &tmpReq, char *Buff, int bsz,
54  XrdFrcRequest::Item *ITList, int ITNum);
55 
56  XrdFrcReqFile(const char *fn, int aVal);
58 
59 private:
60 enum LockType {lkNone, lkShare, lkExcl, lkInit};
61 
62 static const int ReqSize = sizeof(XrdFrcRequest);
63 
64 void FailAdd(char *lfn, int unlk=1);
65 void FailCan(char *rid, int unlk=1);
66 void FailDel(char *lfn, int unlk=1);
67 int FailIni(const char *lfn);
68 int FileLock(LockType ltype=lkExcl);
69 int reqRead(void *Buff, int Offs);
70 int reqWrite(void *Buff, int Offs, int updthdr=1);
71 
72 XrdSysMutex flMutex;
73 
74 struct FileHdr
75 {
76 int First;
77 int Last;
78 int Free;
79 } HdrData;
80 
81 char *lokFN;
82 int lokFD;
83 int reqFD;
84 char *reqFN;
85 
86 int isAgent;
87 
88 struct recEnt {recEnt *Next;
89  XrdFrcRequest reqData;
90  recEnt(XrdFrcRequest &reqref) {Next = 0; reqData = reqref;}
91  };
92 int ReWrite(recEnt *rP);
93 
94 class rqMonitor
95 {
96 public:
97  rqMonitor(int isAgent) : doUL(isAgent)
98  {if (isAgent) rqMutex.Lock();}
99  ~rqMonitor() {if (doUL) rqMutex.UnLock();}
100 private:
101 static XrdSysMutex rqMutex;
102 int doUL;
103 };
104 };
105 #endif
int Get(XrdFrcRequest *rP)
void Del(XrdFrcRequest *rP)
char * List(char *Buff, int bsz, int &Offs, XrdFrcRequest::Item *ITList=0, int ITNum=0)
void Add(XrdFrcRequest *rP)
XrdFrcReqFile(const char *fn, int aVal)
void ListL(XrdFrcRequest &tmpReq, char *Buff, int bsz, XrdFrcRequest::Item *ITList, int ITNum)
void Can(XrdFrcRequest *rP)