xrootd
XrdBuffXL.hh
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1 #ifndef __XrdBuffXL_H__
2 #define __XrdBuffXL_H__
3 /******************************************************************************/
4 /* */
5 /* X r d B u f f X L . h h */
6 /* */
7 /* (c) 2015 by the Board of Trustees of the Leland Stanford, Jr., University */
8 /* Produced by Andrew Hanushevsky for Stanford University under contract */
9 /* DE-AC02-76-SFO0515 with the Department of Energy */
10 /* */
11 /* This file is part of the XRootD software suite. */
12 /* */
13 /* XRootD is free software: you can redistribute it and/or modify it under */
14 /* the terms of the GNU Lesser General Public License as published by the */
15 /* Free Software Foundation, either version 3 of the License, or (at your */
16 /* option) any later version. */
17 /* */
18 /* XRootD is distributed in the hope that it will be useful, but WITHOUT */
19 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
20 /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
21 /* License for more details. */
22 /* */
23 /* You should have received a copy of the GNU Lesser General Public License */
24 /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */
25 /* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */
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27 /* The copyright holder's institutional names and contributor's names may not */
28 /* be used to endorse or promote products derived from this software without */
29 /* specific prior written permission of the institution or contributor. */
30 /******************************************************************************/
31 
32 #include "XrdBuffer.hh"
33 #include "XrdSys/XrdSysPthread.hh"
34 
35 // There should be only one instance of this class.
36 //
37 class XrdBuffXL
38 {
39 public:
40 
41 void Init(int maxMSZ);
42 
43 XrdBuffer *Obtain(int bsz);
44 
45 int Recalc(int bsz);
46 
47 void Release(XrdBuffer *bp);
48 
49 int MaxSize() {return maxsz;}
50 
51 void Trim();
52 
53 int Stats(char *buff, int blen, int do_sync=0);
54 
55  XrdBuffXL();
56 
57  ~XrdBuffXL() {} // The buffmanager is never deleted
58 
59 private:
60 
62 
63 struct BuckVec
65  int numbuf;
66  int numreq;
67  BuckVec() : bnext(0), numbuf(0), numreq(0) {}
68  ~BuckVec() {} // Never gets deleted
69  };
70 
71  BuckVec *bucket; // 4M**(0 ... slots-1) sized buffers
72  long long totalo;
73 
74 const int pagsz;
75  int slots;
76  int maxsz;
77  int totreq;
78  int totbuf;
79 };
80 #endif
int Stats(char *buff, int blen, int do_sync=0)
void Release(XrdBuffer *bp)
void Trim()
BuckVec * bucket
Definition: XrdBuffXL.hh:71
void Init(int maxMSZ)
int slots
Definition: XrdBuffXL.hh:75
~BuckVec()
Definition: XrdBuffXL.hh:68
const int pagsz
Definition: XrdBuffXL.hh:74
int totreq
Definition: XrdBuffXL.hh:77
long long totalo
Definition: XrdBuffXL.hh:72
XrdBuffer * bnext
Definition: XrdBuffXL.hh:64
Definition: XrdSysPthread.hh:165
int numbuf
Definition: XrdBuffXL.hh:65
int maxsz
Definition: XrdBuffXL.hh:76
Definition: XrdBuffXL.hh:63
~XrdBuffXL()
Definition: XrdBuffXL.hh:57
BuckVec()
Definition: XrdBuffXL.hh:67
XrdSysMutex slotXL
Definition: XrdBuffXL.hh:61
XrdBuffer * Obtain(int bsz)
int MaxSize()
Definition: XrdBuffXL.hh:49
int totbuf
Definition: XrdBuffXL.hh:78
Definition: XrdBuffXL.hh:37
Definition: XrdBuffer.hh:41
int numreq
Definition: XrdBuffXL.hh:66
int Recalc(int bsz)