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XrdSfsAio.hh
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1#ifndef __SFS_AIO_H__
2#define __SFS_AIO_H__
3/******************************************************************************/
4/* */
5/* X r d S f s A i o . h h */
6/* */
7/* (c) 2004 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/>. */
26/* */
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 <cstdint>
33#include <signal.h>
34#include <sys/types.h>
35// _POSIX_ASYNCHRONOUS_IO, if it is defined, is in unistd.h.
36#include <unistd.h>
37#ifdef _POSIX_ASYNCHRONOUS_IO
38#ifdef __APPLE__
39#include <AvailabilityMacros.h>
40#include <sys/aio.h>
41#else
42#include <aio.h>
43#endif
44#else
45struct aiocb { // Minimal structure to avoid compiler errors
47 void *aio_buf;
48 size_t aio_nbytes;
51 struct sigevent aio_sigevent;
52 };
53#endif
54
55// The XrdSfsAIO class is meant to be derived. This object provides the
56// basic interface to handle AIO control block queues not processing.
57//
59{
60public:
61
63uint32_t *cksVec; // For pgRead and pgWrite
64
65ssize_t Result; // If >= 0 valid result; else is -errno
66
67const char *TIdent; // Trace information (optional)
68
69// Method to handle completed reads
70//
71virtual void doneRead() = 0;
72
73// Method to hand completed writes
74//
75virtual void doneWrite() = 0;
76
77// Method to recycle free object
78//
79virtual void Recycle() = 0;
80
82#if defined(__APPLE__) && (!defined(MAC_OS_X_VERSION_10_4) || \
83 MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_4)
84 sfsAio.aio_sigevent.sigev_value.sigval_ptr = (void *)this;
85#else
86 sfsAio.aio_sigevent.sigev_value.sival_ptr = (void *)this;
87#endif
88 sfsAio.aio_sigevent.sigev_notify = SIGEV_SIGNAL;
90 cksVec = 0;
91 TIdent = "";
92 }
93virtual ~XrdSfsAio() {}
94};
95#endif
Definition XrdSfsAio.hh:59
uint32_t * cksVec
Definition XrdSfsAio.hh:63
ssize_t Result
Definition XrdSfsAio.hh:65
const char * TIdent
Definition XrdSfsAio.hh:67
XrdSfsAio()
Definition XrdSfsAio.hh:81
virtual ~XrdSfsAio()
Definition XrdSfsAio.hh:93
virtual void Recycle()=0
virtual void doneRead()=0
struct aiocb sfsAio
Definition XrdSfsAio.hh:62
virtual void doneWrite()=0
Definition XrdSfsAio.hh:45
off_t aio_offset
Definition XrdSfsAio.hh:49
size_t aio_nbytes
Definition XrdSfsAio.hh:48
struct sigevent aio_sigevent
Definition XrdSfsAio.hh:51
int aio_reqprio
Definition XrdSfsAio.hh:50
int aio_fildes
Definition XrdSfsAio.hh:46
void * aio_buf
Definition XrdSfsAio.hh:47