xrootd
XrdCnsLogFile.hh
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1 #ifndef __XRDCnsLogFile_H_
2 #define __XRDCnsLogFile_H_
3 /******************************************************************************/
4 /* */
5 /* X r d C n s L o g F i l e . h h */
6 /* */
7 /* (c) 2009 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 
13 // $Id$
14 
15 #include "XrdCns/XrdCnsLogRec.hh"
16 #include "XrdSys/XrdSysPthread.hh"
17 
18 class XrdCnsLogFile
19 {
20 public:
21 
22 XrdCnsLogFile *Next;
23 
24 int Add(XrdCnsLogRec *Rec, int doSync=1);
25 
26 int Commit();
27 
28 int Eol();
29 
30 const char *FName() {return logFN;}
31 
32 char *getLog(int &Dlen) {Dlen = logNext-logBuff; return logBuff;}
33 
34 XrdCnsLogRec *getRec();
35 
36 static void maxRecs(int nRecs) {logRMax = nRecs;
37  logBMax = nRecs * sizeof(XrdCnsLogRec);
38  }
39 
40 int Open(int aBuff=1, off_t thePos=0);
41 
42 XrdCnsLogFile *Subscribe(const char *Path, int cNum);
43 
44 int Unlink();
45 
46  XrdCnsLogFile(const char *Path, int cnum=0, int Wait=1)
47  : Next(0), logSem(0), subNext(0),
48  logBuff(0),logNext(0), logFN(strdup(Path)),
49  logFD(-1), logRdr(cnum), logWait(Wait),
50  logOffset(0), recOffset(0) {}
51  ~XrdCnsLogFile();
52 
53 private:
54 int Read(char *buff, int blen);
55 
56 static int logRMax;
57 static int logBMax;
58 
59 XrdSysMutex logMutex;
60 XrdSysSemaphore logSem;
61 XrdSysSemaphore synSem;
62 XrdCnsLogFile *subNext;
63 
64 XrdCnsLogRec Rec;
65 
66 char *logBuff;
67 char *logNext;
68 
69 char *logFN;
70 int logFD;
71 int logRdr;
72 int logWait;
73 int logOffset;
74 int recOffset;
75 };
76 #endif
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