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HostInfoDarwin.h
Go to the documentation of this file.
/*
** 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.
**
** This is a modified version of the osf1 version. Initially, I tried
** to use the m_macosx.c version by Andrew S. Townley, but ran into
** problems...
**
** --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
**
** 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: -lstdc++
**
** 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_HOSTINFODARWIN_H
#define CASA_HOSTINFODARWIN_H
# if defined(HOSTINFO_DO_IMPLEMENT)
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <mach/mach.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
// <summary>
// HostInfo for Darwin 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 Linux specific functions for HostInfo.
// It is selectively included by HostInfo.cc.
// </synopsis>
//
// <group name="HostInfo">
/* Log base 2 of 1024 is 10 (2^10 == 1024) */
#define LOG1024 10
/* these are for getting the memory statistics */
static int pageshift; /* log base 2 of the pagesize */
static int pagesize_;
/* 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 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) {
int pagesize;
kern_return_t ret;
struct host_basic_info basic_info;
unsigned int count = HOST_BASIC_INFO_COUNT;
/* get the page size with portable sysconf and calculate pageshift from it */
pagesize_ = pagesize = sysconf(_SC_PAGESIZE);
pageshift = 0;
while (pagesize > 1)
{
pageshift++;
pagesize >>= 1;
}
/* we only need the amount of log(2)1024 for our conversion */
pageshift -= LOG1024;
#ifdef AIPS_64B
ret = host_info( mach_host_self(), HOST_BASIC_INFO, (host_info64_t) &basic_info, &count );
#else
ret = host_info( mach_host_self(), HOST_BASIC_INFO, (host_info_t) &basic_info, &count );
#endif
if ( ret != KERN_SUCCESS ) {
valid = 0;
} else {
#ifdef AIPS_64B
memory_total = basic_info.max_mem / 1024;
#else
memory_total = basic_info.memory_size / 1024;
#endif
cpus = basic_info.avail_cpus;
}
}
void HostMachineInfo::update_info( ) {
#ifdef AIPS_64B
struct vm_statistics64 vmstats;
#else
struct vm_statistics vmstats;
#endif
kern_return_t kr;
unsigned int count;
/* 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. */
count = sizeof(vmstats)/sizeof(integer_t);
#ifdef AIPS_64B
kr = host_statistics64( mach_host_self(), HOST_VM_INFO64, (host_info64_t) &vmstats, &count );
#else
kr = host_statistics( mach_host_self(), HOST_VM_INFO, (host_info_t) &vmstats, &count );
#endif
if ( kr != KERN_SUCCESS ) {
valid = 0;
return;
}
// /* 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_used = pagetok(swappages - swapfree);
// swap_free = pagetok(swapfree);
// swap_total = pagetok(swappages);
memory_used = pagetok(vmstats.active_count + vmstats.wire_count);
memory_free = memory_total - memory_used;
swap_used = pagetok( vmstats.active_count + vmstats.inactive_count + vmstats.wire_count );
swap_free = pagetok( vmstats.free_count );
swap_total = pagetok( vmstats.active_count + vmstats.inactive_count +
vmstats.wire_count + vmstats.free_count );
}
} //# NAMESPACE CASACORE - END
# endif
#endif
casacore
this file contains all the compiler specific defines
Definition mainpage.dox:28
stdio.h
stdlib.h