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/*
* This is memory_tru64.cpp to retrieve memory information under Tru64/Alpha.
*
* Implemented by Tom Leitner, Tom@radar.tu-graz.ac.at
*
* WARNING: This module requires linking with -lmach
*
* This routine is based on m_decosf1.c from the "top" program written by:
*
* AUTHOR: Anthony Baxter, <anthony@aaii.oz.au>
*
*/
#include <stdio.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/mbuf.h>
#include <net/route.h>
#include <sys/table.h>
extern "C" {
#include <mach/mach_traps.h>
}
#include <mach/vm_statistics.h>
#define pagetob(size) (MEMORY(1024L) * ((long) (size) << (long) pageshift))
#define LOG1024 10
extern "C" void vm_statistics(task_t, vm_statistics_data_t*);
void KCMMemory::fetchValues()
{
int pageshift; /* log base 2 of the pagesize */
register int pagesize;
vm_statistics_data_t vmstats;
int swap_pages=0,swap_free=0,i;
struct tbl_swapinfo swbuf;
/* 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;
/* 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: don't 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) {
swap_pages += swbuf.size;
swap_free += swbuf.free;
i++;
}
memoryInfos[TOTAL_MEM] = pagetob((vmstats.free_count +
vmstats.active_count +
vmstats.inactive_count +
vmstats.wire_count));
memoryInfos[FREE_MEM] = pagetob(vmstats.free_count);
memoryInfos[SHARED_MEM] = NO_MEMORY_INFO; /* FIXME ?? */
memoryInfos[BUFFER_MEM] = NO_MEMORY_INFO; /* FIXME ?? */
#ifdef __GNUC__
#warning "FIXME: memoryInfos[CACHED_MEM]"
#endif
memoryInfos[CACHED_MEM] = NO_MEMORY_INFO; /* cached memory in ram */
memoryInfos[SWAP_MEM] = pagetob(swap_pages);
memoryInfos[FREESWAP_MEM] = pagetob(swap_free);
}
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