2008-02-26 14:55:23 +01:00
|
|
|
/*
|
|
|
|
LA: linear algebra C++ interface library
|
|
|
|
Copyright (C) 2008 Jiri Pittner <jiri.pittner@jh-inst.cas.cz> or <jiri@pittnerovi.com>
|
|
|
|
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
|
|
it under the terms of the GNU General Public License as published by
|
|
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
|
|
(at your option) any later version.
|
|
|
|
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
GNU General Public License for more details.
|
|
|
|
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
2005-02-04 18:23:13 +01:00
|
|
|
#ifndef _AUXSTORAGE_H_
|
|
|
|
#define _AUXSTORAGE_H_
|
2009-11-12 22:01:19 +01:00
|
|
|
|
2005-02-04 18:23:13 +01:00
|
|
|
#include "vec.h"
|
|
|
|
#include "mat.h"
|
|
|
|
#include "smat.h"
|
|
|
|
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <sys/stat.h>
|
|
|
|
#include <fcntl.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
|
2009-11-12 22:01:19 +01:00
|
|
|
namespace LA {
|
|
|
|
|
2005-02-04 19:09:16 +01:00
|
|
|
//CAUTION:
|
|
|
|
//it will not work if T is itself a class with dynamically allocated components
|
|
|
|
//it cannot be implemented for SparseMat, which lacks fixed record length
|
2005-02-14 01:10:07 +01:00
|
|
|
//for more complex I/O use put() and get() methods of the individual classes
|
|
|
|
|
2005-02-04 19:09:16 +01:00
|
|
|
|
2005-02-04 18:23:13 +01:00
|
|
|
|
|
|
|
template<typename T>
|
|
|
|
class AuxStorage
|
|
|
|
{
|
2005-02-04 19:09:16 +01:00
|
|
|
char filename[32];
|
2005-02-04 18:23:13 +01:00
|
|
|
int fd;
|
2005-02-06 15:01:27 +01:00
|
|
|
bool deleteme;
|
2005-02-04 19:09:16 +01:00
|
|
|
size_t recl;
|
2005-02-04 18:23:13 +01:00
|
|
|
public:
|
|
|
|
AuxStorage(void);
|
2005-02-06 15:01:27 +01:00
|
|
|
AuxStorage(const char *name);
|
|
|
|
~AuxStorage(void) {close(fd); if(deleteme) unlink(filename);};
|
2005-02-04 18:23:13 +01:00
|
|
|
void get(NRVec<T> &x, const int pos) const;
|
|
|
|
void put(const NRVec<T> &x, const int pos);
|
|
|
|
void get(NRMat<T> &x, const int pos) const;
|
|
|
|
void put(const NRMat<T> &x, const int pos);
|
|
|
|
void get(NRSMat<T> &x, const int pos) const;
|
|
|
|
void put(const NRSMat<T> &x, const int pos);
|
|
|
|
};
|
|
|
|
|
|
|
|
template<typename T>
|
|
|
|
AuxStorage<T>::AuxStorage(void)
|
|
|
|
{
|
2005-02-14 01:10:07 +01:00
|
|
|
//mkstemp probable does not support O_LARGEFILE?!
|
2005-02-04 19:09:16 +01:00
|
|
|
strcpy(filename,"AUX_XXXXXX");
|
2005-02-04 18:23:13 +01:00
|
|
|
mktemp(filename);
|
|
|
|
unlink(filename);
|
2005-02-04 19:09:16 +01:00
|
|
|
fd=open(filename,O_CREAT|O_LARGEFILE|O_RDWR,0777);
|
2005-02-04 18:23:13 +01:00
|
|
|
if(fd<0) {perror(""); laerror("open failed in AuxStorage");}
|
|
|
|
recl=0;
|
2005-02-06 15:01:27 +01:00
|
|
|
deleteme=1;
|
2005-02-04 18:23:13 +01:00
|
|
|
}
|
|
|
|
|
2005-02-06 15:01:27 +01:00
|
|
|
template<typename T>
|
|
|
|
AuxStorage<T>::AuxStorage(const char *name)
|
|
|
|
{
|
|
|
|
strcpy(filename,name);
|
|
|
|
unlink(filename);
|
|
|
|
fd=open(filename,O_CREAT|O_LARGEFILE|O_RDWR,0777);
|
|
|
|
if(fd<0) {perror(""); laerror("open failed in AuxStorage");}
|
|
|
|
recl=0;
|
|
|
|
deleteme=0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
//vectors
|
2005-02-04 18:23:13 +01:00
|
|
|
template<typename T>
|
|
|
|
void AuxStorage<T>::get(NRVec<T> &x, const int pos) const
|
|
|
|
{
|
|
|
|
if(recl==0) laerror("get from an empty file in AuxStorage");
|
2005-02-04 19:09:16 +01:00
|
|
|
if((off64_t)-1 == lseek64(fd,pos*((off64_t)recl),SEEK_SET)) {perror(""); laerror("seek failed in AuxStorage");}
|
2005-02-18 23:08:15 +01:00
|
|
|
x.copyonwrite();
|
2005-02-04 19:09:16 +01:00
|
|
|
if((ssize_t)recl!=read(fd,&x[0],recl)) {perror(""); laerror("read failed in AuxStorage");}
|
2005-02-04 18:23:13 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
template<typename T>
|
2005-02-04 19:09:16 +01:00
|
|
|
void AuxStorage<T>::put(const NRVec<T> &x, const int pos)
|
2005-02-04 18:23:13 +01:00
|
|
|
{
|
|
|
|
if(recl) {if(recl!=x.size()*sizeof(T)) laerror("attempt to write objects of different size to one AuxStorage");}
|
|
|
|
else recl=x.size()*sizeof(T);
|
2005-02-04 19:09:16 +01:00
|
|
|
if((off64_t)-1 == lseek64(fd,pos*((off64_t)recl),SEEK_SET)) {perror(""); laerror("seek failed in AuxStorage");}
|
2005-02-04 18:23:13 +01:00
|
|
|
if(0>write(fd,&x[0],recl)) {perror(""); laerror("write failed in AuxStorage");}
|
|
|
|
}
|
|
|
|
|
2005-02-06 15:01:27 +01:00
|
|
|
//matrices
|
|
|
|
template<typename T>
|
|
|
|
void AuxStorage<T>::get(NRMat<T> &x, const int pos) const
|
|
|
|
{
|
|
|
|
if(recl==0) laerror("get from an empty file in AuxStorage");
|
|
|
|
if((off64_t)-1 == lseek64(fd,pos*((off64_t)recl),SEEK_SET)) {perror(""); laerror("seek failed in AuxStorage");}
|
2005-02-18 23:08:15 +01:00
|
|
|
x.copyonwrite();
|
2005-02-06 15:01:27 +01:00
|
|
|
if((ssize_t)recl!=read(fd,&x(0,0),recl)) {perror(""); laerror("read failed in AuxStorage");}
|
|
|
|
}
|
|
|
|
|
|
|
|
template<typename T>
|
|
|
|
void AuxStorage<T>::put(const NRMat<T> &x, const int pos)
|
|
|
|
{
|
|
|
|
if(recl) {if(recl!=x.nrows()*x.ncols()*sizeof(T)) laerror("attempt to write objects of different size to one AuxStorage");}
|
|
|
|
else recl=x.nrows()*x.ncols()*sizeof(T);
|
|
|
|
if((off64_t)-1 == lseek64(fd,pos*((off64_t)recl),SEEK_SET)) {perror(""); laerror("seek failed in AuxStorage");}
|
|
|
|
if(0>write(fd,&x(0,0),recl)) {perror(""); laerror("write failed in AuxStorage");}
|
|
|
|
}
|
|
|
|
|
|
|
|
//packed symmetric matrices
|
|
|
|
template<typename T>
|
|
|
|
void AuxStorage<T>::get(NRSMat<T> &x, const int pos) const
|
|
|
|
{
|
|
|
|
if(recl==0) laerror("get from an empty file in AuxStorage");
|
|
|
|
if((off64_t)-1 == lseek64(fd,pos*((off64_t)recl),SEEK_SET)) {perror(""); laerror("seek failed in AuxStorage");}
|
2005-02-18 23:08:15 +01:00
|
|
|
x.copyonwrite();
|
2005-02-06 15:01:27 +01:00
|
|
|
if((ssize_t)recl!=read(fd,&x(0,0),recl)) {perror(""); laerror("read failed in AuxStorage");}
|
|
|
|
}
|
|
|
|
|
|
|
|
template<typename T>
|
|
|
|
void AuxStorage<T>::put(const NRSMat<T> &x, const int pos)
|
|
|
|
{
|
|
|
|
if(recl) {if(recl!=x.nrows()*(x.nrows()+1)/2*sizeof(T)) laerror("attempt to write objects of different size to one AuxStorage");}
|
|
|
|
else recl=x.nrows()*(x.nrows()+1)/2*sizeof(T);
|
|
|
|
if((off64_t)-1 == lseek64(fd,pos*((off64_t)recl),SEEK_SET)) {perror(""); laerror("seek failed in AuxStorage");}
|
|
|
|
if(0>write(fd,&x(0,0),recl)) {perror(""); laerror("write failed in AuxStorage");}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-11-12 22:01:19 +01:00
|
|
|
}//namespace
|
2005-02-04 18:23:13 +01:00
|
|
|
|
|
|
|
#endif
|