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HostInfoBsd.h
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//# Copyright (C) 2009
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library 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 Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: casa-feedback@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
/*
** Author Tony Maher
**
** Based on HostInfoDarwin.h (just the scaffolding code).
*/
#ifndef CASA_HOSTINFOBSD_H
#define CASA_HOSTINFOBSD_H
# if defined(HOSTINFO_DO_IMPLEMENT)
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/vmmeter.h> // struct vmtotal
#include <fcntl.h>
#include <kvm.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
// <summary>
// HostInfo for BSD (FreeBSD) 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 BSD (FreeBSD) specific functions for HostInfo.
// It is selectively included by HostInfo.cc.
// </synopsis>
//
// <group name="HostInfo">
// these are for getting the memory statistics
static int pagesize;
static int page_kb;
class HostMachineInfo {
friend class HostInfo;
HostMachineInfo( );
void update_info( );
int valid;
int cpus;
ptrdiff_t memory_total;
ptrdiff_t memory_used;
ptrdiff_t memory_free;
ptrdiff_t swap_total;
ptrdiff_t swap_used;
ptrdiff_t swap_free;
};
// </group>
HostMachineInfo::HostMachineInfo( ) : valid(1) {
size_t len;
pagesize = getpagesize(); // size of page in bytes.
page_kb = pagesize / 1024; // in kilobytes.
len = sizeof(cpus);
if (sysctlbyname("hw.ncpu", &cpus, &len, NULL, 0) == -1)
perror("sysctl");
len = sizeof(memory_total);
if (sysctlbyname("hw.physmem", &memory_total, &len, NULL, 0) == -1)
perror("sysctl");
else
memory_total /= 1024; // in kilobytes
}
void HostMachineInfo::update_info( ) {
size_t len;
kvm_t *kd;
struct vmtotal total;
struct kvm_swap swapary[1];
// Memory and swap values are in pages.
len = sizeof(total);
if (sysctlbyname("vm.vmtotal", &total, &len, NULL, 0) == -1)
perror("sysctl");
else
memory_used = total.t_rm * page_kb;
memory_free = total.t_free * page_kb;
kd = kvm_open(NULL, _PATH_DEVNULL, NULL, O_RDONLY, "kvm_open");
if (kd != NULL) {
kvm_getswapinfo(kd, swapary, 1, 0);
swap_total = swapary[0].ksw_total * page_kb;
swap_used = swapary[0].ksw_used * page_kb;
swap_free = swap_total - swap_used;
}
}
} //# NAMESPACE CASACORE - END
# endif
#endif
casacore
this file contains all the compiler specific defines
Definition mainpage.dox:28
stdio.h
stdlib.h