XRootD
ICephIOAdapter.hh
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1 #ifndef __ICEPH_IO_ADAPTER_HH__
2 #define __ICEPH_IO_ADAPTER_HH__
3 //------------------------------------------------------------------------------
4 // Interface of the logic part of the buffering
5 // Intention to be able to abstract the underlying implementation and code against the inteface
6 // e.g. for different complexities of control.
7 // Couples loosely to IXrdCepgBufferData and anticipated to be called by XrdCephOssBufferedFile.
8 // Should managage all of the IO and logic to give XrdCephOssBufferedFile only simple commands to call.
9 // implementations are likely to use (via callbacks?) CephPosix library code for actual reads and writes.
10 //------------------------------------------------------------------------------
11 
12 #include <sys/types.h>
13 #include "IXrdCephBufferData.hh"
14 
15 namespace XrdCephBuffer {
16 
26  public:
27  virtual ~ICephIOAdapter() {}
28  virtual ssize_t write(off64_t offset,size_t count) = 0;
29  virtual ssize_t read(off64_t offset,size_t count) = 0;
30 
31 };
32 
33 }
34 
35 #endif
Manage the actual IO operations that read and write the data into Ceph via librados striper....
virtual ssize_t write(off64_t offset, size_t count)=0
write from buffer into ceph
virtual ssize_t read(off64_t offset, size_t count)=0
read from ceph into the buffer
is a simple implementation of IXrdCephBufferData using std::vector<char> representation for the buffe...
Definition: BufferUtils.hh:29