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HostInfoOsf1.h
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//# HostInfo_osf1.h: DEC OSF/1 specific memory, swap, and CPU code.
/*
** This is a greatly MODIFIED version of a "top" machine dependent file.
** The only resemblance it bears to the original is with respect to the
** mechanics of finding various system details. The copyright details
** follow.
**
** --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
**
** Top users/processes display for Unix
** Version 3
**
** This program may be freely redistributed,
** but this entire comment MUST remain intact.
**
** Copyright (c) 1984, 1989, William LeFebvre, Rice University
** Copyright (c) 1989 - 1994, William LeFebvre, Northwestern University
** Copyright (c) 1994, 1995, William LeFebvre, Argonne National Laboratory
** Copyright (c) 1996, William LeFebvre, Group sys Consulting
** Copyright (c) 2002, Associated Universities Inc.
*/
/*
* LIBS: -lmach -lpset
*
* AUTHOR: Darrell Schiebel <drs@nrao.edu>
*
* ORIGINAL AUTHOR: Anthony Baxter <anthony@aaii.oz.au>
* ORIGINAL CONTRIBUTORS: David S. Comay <dsc@seismo.css.gov>
* Claus Kalle
* Pat Welch <tpw@physics.orst.edu>
* William LeFebvre <lefebvre@dis.anl.gov>
* Rainer Orth <ro@techfak.uni-bielefeld.de>
*/
#ifndef CASA_HOSTINFOOSF1_H
#define CASA_HOSTINFOOSF1_H
# if defined(HOSTINFO_DO_IMPLEMENT)
//
//--> /usr/include/mach/mach_interface.h:297: <-
//--> previous declaration of `int vm_statistics(long int, struct vm_statistics *)' with C++ linkage <-
//
// so, we hack this by defining _mach to kick <mach/mach_interface.h> out of inclusion,
// and then below we make this extern "C"... likely this is fixed in some version of
// DEC OSF/1 which is newer than what we have...
//
#define _mach
#include <stdio.h>
#include <unistd.h>
#include <mach.h>
#include <mach/mach_types.h>
#include <mach/vm_statistics.h>
#include <mach/host_info.h>
#include <sys/table.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
// <summary>
// HostInfo for OSF1 machines.
// </summary>
// <use visibility=local>
// <reviewed reviewer="UNKNOWN" date="before2004/08/25" tests="" demos="">
// </reviewed>
// <prerequisite>
// <li> <linkto class=HostInfo>HostInfo</linkto>
// </prerequisite>
// <synopsis>
// This file provides the OSF1 specific functions for HostInfo.
// It is selectively included by HostInfo.cc.
// </synopsis>
//
// <group name="HostInfo">
extern "C" kern_return_t host_info(int, int, host_info_t, unsigned int *);
extern "C" int host_self( );
extern "C" int vm_statistics(long, struct vm_statistics *);
/* Log base 2 of 1024 is 10 (2^10 == 1024) */
#define LOG1024 10
/* these are for getting the memory statistics */
/* define pagetok in terms of pageshift */
#define pagetok(size) ((size) << pageshift)
class HostMachineInfo {
friend class HostInfo;
HostMachineInfo( );
void update_info( );
int valid;
int cpus;
ptrdiff_t swap_total;
ptrdiff_t swap_used;
ptrdiff_t swap_free;
ptrdiff_t memory_total;
ptrdiff_t memory_used;
ptrdiff_t memory_free;
int pageshift; /* log base 2 of the pagesize */
};
// </group>
HostMachineInfo::HostMachineInfo( ) : valid(1) {
int i = 0;
int pagesize;
struct tbl_sysinfo sibuf;
kern_return_t ret;
struct host_basic_info basic_info;
unsigned int count = HOST_BASIC_INFO_COUNT;
/* get the page size with "getpagesize" and calculate pageshift from it */
pagesize = getpagesize();
pageshift = 0;
while (pagesize > 1)
{
pageshift++;
pagesize >>= 1;
}
/* we only need the amount of log(2)1024 for our conversion */
pageshift -= LOG1024;
ret = host_info( host_self(), HOST_BASIC_INFO, (host_info_t) &basic_info, &count );
if ( ret != KERN_SUCCESS ) {
valid = 0;
} else {
memory_total = basic_info.memory_size / 1024;
cpus = basic_info.avail_cpus;
}
}
void HostMachineInfo::update_info( ) {
struct tbl_swapinfo swbuf;
vm_statistics_data_t vmstats;
int swappages=0,swapfree=0,i;
/* memory information */
/* this is possibly bogus - we work out total # pages by */
/* adding up the free, active, inactive, wired down, and */
/* zero filled. Anyone who knows a better way, TELL ME! */
/* Change: dont use zero filled. */
(void) vm_statistics(task_self(),&vmstats);
/* thanks DEC for the table() command. No thanks at all for */
/* omitting the man page for it from OSF/1 1.2, and failing */
/* to document SWAPINFO in the 1.3 man page. Lets hear it for */
/* include files. */
i=0;
while(table(TBL_SWAPINFO,i,&swbuf,1,sizeof(struct tbl_swapinfo))>0) {
swappages += swbuf.size;
swapfree += swbuf.free;
i++;
}
swap_total = pagetok(swappages);
swap_used = pagetok(swappages - swapfree);
swap_free = pagetok(swapfree);
memory_free = pagetok(vmstats.free_count);
memory_used = memory_total - memory_free;
// some memory is left unaccounted for, using the following...
// memory_used = pagetok(vmstats.active_count + vmstats.inactive_count + vmstats.wire_count);
}
# endif
} //# NAMESPACE CASACORE - END
#endif
casacore
this file contains all the compiler specific defines
Definition mainpage.dox:28
stdio.h