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/*
* Lustre common /proc PMDA
*
* Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
*
* Author: Scott Emery <emery@sgi.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 2 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libreadfiles.h"
/* int file_indexed (struct file_state *f_s,
* int type, int base, void *vpp, int index)
* - Get single value from file containing multiple values
* struct file_state *f_s - struct for access to single file
* type - PCP type described by the PMAPI PM_TYPE_* enum
* base - for integer types, base as stored in the file
* - for string and aggregate types, size of memory pointed to
* ---------------- size may be changed by realloc
* vpp - pointer to pointer to storage allocated to contain value
* - pointed to pointer may change
* ---------------- pointer may be changed by realloc
* index - value is the n'th strtok token in the file
* consider specifying token seperator, default whitespace is fine for now
*/
int file_indexed (struct file_state *f_s, int type, int *base, void **vpp, int index)
{
int i;
char *cp, *sp;
/* reload file if it hasn't been reloaded in x */
if (refresh_file( f_s ) <0 ) {
__pmNotifyErr(LOG_ERR, "file_indexed: refresh_file error");
return -1;
}
/* file_indexed assumes that the file contains one line
* if the file may ever contain more than one line, consider file_arrayed
* (if that ever gets written)
* strtok to the appropriate spot
* strtok screws up the target string, so make a copy of the file data
*/
cp = malloc ( f_s->datas );
strcpy ( cp, f_s->datap );
sp = strtok( cp, " " );
for (i = 0; i < index; i++){
sp = strtok( NULL, " ");
}
/* otherwise, a lot like file_single (see below)
* one would eventually write a configure script to make
* sure that the right routines are used below.. defining
* a STRTO32 and STRTOU32, etc.
*/
switch (type) {
case PM_TYPE_32:
*((long *)(*vpp)) = strtol(sp,0,*base);
break;
case PM_TYPE_U32:
*((unsigned long *)(*vpp)) = strtoul(sp,0,*base);
break;
case PM_TYPE_64:
*((long long *)(*vpp)) = strtoll(sp,0,*base);
break;
case PM_TYPE_U64:
*((unsigned long long *)(*vpp)) = strtoull(sp,0,*base);
break;
case PM_TYPE_FLOAT:
*((float *)(*vpp)) = strtof(sp,0);
break;
case PM_TYPE_DOUBLE:
*((double *)(*vpp)) = strtod(sp,0);
break;
default:
fprintf(stderr,"file_indexed: type %s not supported\n", pmTypeStr(type));
break;
}
/* so, write it up and slice and dice */
free (cp);
return 0;
}
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