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/*********************************************************
* Copyright (C) 2008 VMware, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation version 2.1 and no 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 Lesser GNU General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*********************************************************/
/*
* This file gathers the virtual memory stats from Linux guest to be
* passed on to the vmx.
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/wait.h>
#include <string.h>
#include "vmware.h"
#include "guestInfo.h"
#include "strutil.h"
#include "debug.h"
#ifndef NO_PROCPS
#include "vm_procps.h"
static void GuestInfoMonitorGetStat(GuestMemInfo *vmStats);
static Bool GuestInfoMonitorReadMeminfo(GuestMemInfo *vmStats);
#endif
#define LINUX_MEMINFO_FLAGS (MEMINFO_MEMTOTAL | MEMINFO_MEMFREE | MEMINFO_MEMBUFF |\
MEMINFO_MEMCACHE | MEMINFO_MEMACTIVE | MEMINFO_MEMINACTIVE |\
MEMINFO_SWAPINRATE | MEMINFO_SWAPOUTRATE |\
MEMINFO_IOINRATE | MEMINFO_IOOUTRATE)
/*
*----------------------------------------------------------------------
*
* GuestInfo_PerfMon --
*
* Gather performance stats.
*
* Results:
* Gathered stats. Returns FALSE on failure.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
Bool
GuestInfo_PerfMon(GuestMemInfo *vmStats) // OUT: filled vmstats
{
#ifndef NO_PROCPS
ASSERT(vmStats);
vmStats->flags = 0;
GuestInfoMonitorGetStat(vmStats);
if (GuestInfoMonitorReadMeminfo(vmStats)) {
vmStats->flags |= LINUX_MEMINFO_FLAGS;
return TRUE;
}
#endif
return FALSE;
}
#ifndef NO_PROCPS
/*
*----------------------------------------------------------------------
*
* GuestInfoMonitorGetStat --
*
* Calls getstat() to gather memory stats.
*
* Results:
* Gathered stats in vmStats.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static void
GuestInfoMonitorGetStat(GuestMemInfo *vmStats) // OUT: filled vmstats
{
uint32 hz = Hertz;
uint32 dummy;
jiff cpuUse[2];
jiff cpuNic[2];
jiff cpuSys[2];
jiff cpuIdl[2];
jiff cpuIow[2];
jiff cpuXxx[2];
jiff cpuYyy[2];
jiff cpuZzz[2];
jiff cpuTotal;
jiff cpuHalf;
unsigned long pageIn[2];
unsigned long pageOut[2];
unsigned long swapIn[2];
unsigned long swapOut[2];
unsigned int dummy2[2];
unsigned long kb_per_page = sysconf(_SC_PAGESIZE) / 1024ul;
meminfo();
getstat(cpuUse, cpuNic, cpuSys, cpuIdl, cpuIow, cpuXxx, cpuYyy, cpuZzz,
pageIn, pageOut, swapIn, swapOut, dummy2, dummy2, &dummy, &dummy,
&dummy, &dummy);
cpuTotal = *cpuUse + *cpuNic + *cpuSys + *cpuXxx +
*cpuYyy + *cpuIdl + *cpuIow + *cpuZzz;
cpuHalf = cpuTotal / 2UL;
vmStats->memFree = kb_main_free;
vmStats->memBuff = kb_main_buffers;
vmStats->memCache = kb_main_cached,
vmStats->memInactive = kb_inactive;
vmStats->memActive = kb_active;
vmStats->swapInRate = (uint64)((*swapIn * kb_per_page * hz + cpuHalf) / cpuTotal);
vmStats->swapOutRate = (uint64)((*swapOut * kb_per_page * hz + cpuHalf) / cpuTotal);
vmStats->ioInRate = (uint64)((*pageIn * kb_per_page * hz + cpuHalf) / cpuTotal);
vmStats->ioOutRate = (uint64)((*pageOut * kb_per_page * hz + cpuHalf) / cpuTotal);
}
/*
*----------------------------------------------------------------------
*
* GuestInfoMonitorReadMeminfo --
*
* Reads /proc/meminfo to gather phsycial memory and huge page stats.
*
* Results:
* Read /proc/meminfo for total physical memory and huge pages info.
* Returns FALSE on failure.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static Bool
GuestInfoMonitorReadMeminfo(GuestMemInfo *vmStats) // OUT: filled vmstats
{
char buf[512];
uint64 value;
FILE *fp;
/* Get the total memory, and huge page info from /proc/meminfo. */
fp = fopen("/proc/meminfo", "r");
if (!fp) {
Log("GuestInfoMonitorReadMeminfo: Error opening /proc/meminfo.\n");
return FALSE;
}
while(!feof(fp)) {
if (fscanf(fp, "%s %"FMT64"u", buf, &value) != 2) {
continue;
}
if (StrUtil_StartsWith(buf, "MemTotal")) {
vmStats->memTotal = value;
}
if (StrUtil_StartsWith(buf, "HugePages_Total")) {
vmStats->hugePagesTotal = value;
vmStats->flags |= MEMINFO_HUGEPAGESTOTAL;
}
if (StrUtil_StartsWith(buf, "HugePages_Free")) {
vmStats->hugePagesFree = value;
vmStats->flags |= MEMINFO_HUGEPAGESFREE;
}
}
fclose(fp);
return TRUE;
}
#endif
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