XRootD
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XrdPfcIOFileBlock.hh
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1#ifndef __XRDPFC_IO_FILE_BLOCK_HH__
2#define __XRDPFC_IO_FILE_BLOCK_HH__
3//----------------------------------------------------------------------------------
4// Copyright (c) 2014 by Board of Trustees of the Leland Stanford, Jr., University
5// Author: Alja Mrak-Tadel, Matevz Tadel, Brian Bockelman
6//----------------------------------------------------------------------------------
7// XRootD is free software: you can redistribute it and/or modify
8// it under the terms of the GNU Lesser General Public License as published by
9// the Free Software Foundation, either version 3 of the License, or
10// (at your option) any later version.
11//
12// XRootD is distributed in the hope that it will be useful,
13// but WITHOUT ANY WARRANTY; without even the implied warranty of
14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15// GNU General Public License for more details.
16//
17// You should have received a copy of the GNU Lesser General Public License
18// along with XRootD. If not, see <http://www.gnu.org/licenses/>.
19//----------------------------------------------------------------------------------
20#include <map>
21#include <string>
22
23#include "XrdOuc/XrdOucCache.hh"
24
25#include "XrdPfcIO.hh"
26
27class XrdSysError;
28class XrdOssDF;
29
30namespace XrdPfc
31{
32//----------------------------------------------------------------------------
36//----------------------------------------------------------------------------
37class IOFileBlock : public IO
38{
39public:
40 IOFileBlock(XrdOucCacheIO *io, Cache &cache);
41
43
46 bool ioActive() override;
47
50 void DetachFinalize() override;
51
52 //---------------------------------------------------------------------
54 //---------------------------------------------------------------------
56
57 int Read(char *Buffer, long long Offset, int Length) override;
58
59 int Fstat(struct stat &sbuff) override;
60
61 long long FSize() override;
62
63 void Update(XrdOucCacheIO &iocp) override;
64
65private:
66 long long m_blocksize;
67 std::map<int, File*> m_blocks;
68 XrdSysMutex m_mutex;
69 struct stat *m_localStat;
70 Info m_info;
71 XrdOssDF* m_info_file;
72
73 void GetBlockSizeFromPath();
74 int initLocalStat();
75 File* newBlockFile(long long off, int blocksize);
76 void CloseInfoFile();
77};
78}
79
80#endif
#define stat(a, b)
Definition XrdPosix.hh:101
virtual int Read(char *buff, long long offs, int rlen)=0
Attaches/creates and detaches/deletes cache-io objects for disk based cache.
Definition XrdPfc.hh:152
Downloads original file into multiple files, chunked into blocks. Only blocks that are asked for are ...
void Update(XrdOucCacheIO &iocp) override
long long FSize() override
int Fstat(struct stat &sbuff) override
int Read(char *Buffer, long long Offset, int Length) override
bool ioActive() override
Abstract virtual method of XrdPfc::IO Called to check if destruction needs to be done in a separate t...
void DetachFinalize() override
Abstract virtual method of XrdPfc::IO Called to destruct the IO object after it is no longer used.
Base cache-io class that implements some XrdOucCacheIO abstract methods.
Definition XrdPfcIO.hh:16
Status of cached file. Can be read from and written into a binary file.
Definition XrdPfcInfo.hh:41