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/*
** ZabbixW32 - Win32 agent for Zabbix
** Copyright (C) 2002 Victor Kirhenshtein
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any 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
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**
** $module: sysinfo.cpp
**
**/
#include "zabbixw32.h"
//
// Convert process time from FILETIME structure (100-nanosecond units) to double (milliseconds)
//
static double ConvertProcessTime(FILETIME *lpft)
{
__int64 i;
memcpy(&i,lpft,sizeof(__int64));
i/=10000; // Convert 100-nanosecond units to milliseconds
return (double)i;
}
//
// Check if attribute supported or not
//
static BOOL IsAttributeSupported(int attr)
{
switch(attr)
{
case 5: // gdiobj
case 6: // userobj
if (imp_GetGuiResources==NULL)
return FALSE; // No appropriate function available, probably we are running on NT4
break;
case 7: // io_read_b
case 8: // io_read_op
case 9: // io_write_b
case 10: // io_write_op
case 11: // io_other_b
case 12: // io_other_op
if (imp_GetProcessIoCounters==NULL)
return FALSE; // No appropriate function available, probably we are running on NT4
break;
default:
break;
}
return TRUE;
}
//
// Get specific process attribute
//
static double GetProcessAttribute(HANDLE hProcess,int attr,int type,int count,double lastValue)
{
double value;
PROCESS_MEMORY_COUNTERS mc;
IO_COUNTERS ioCounters;
FILETIME ftCreate,ftExit,ftKernel,ftUser;
// Get value for current process instance
switch(attr)
{
case 0: // vmsize
GetProcessMemoryInfo(hProcess,&mc,sizeof(PROCESS_MEMORY_COUNTERS));
value=(double)mc.PagefileUsage/1024; // Convert to Kbytes
break;
case 1: // wkset
GetProcessMemoryInfo(hProcess,&mc,sizeof(PROCESS_MEMORY_COUNTERS));
value=(double)mc.WorkingSetSize/1024; // Convert to Kbytes
break;
case 2: // pf
GetProcessMemoryInfo(hProcess,&mc,sizeof(PROCESS_MEMORY_COUNTERS));
value=(double)mc.PageFaultCount;
break;
case 3: // ktime
case 4: // utime
GetProcessTimes(hProcess,&ftCreate,&ftExit,&ftKernel,&ftUser);
value=ConvertProcessTime(attr==3 ? &ftKernel : &ftUser);
break;
case 5: // gdiobj
case 6: // userobj
value=(double)imp_GetGuiResources(hProcess,attr==5 ? 0 : 1);
break;
case 7: // io_read_b
imp_GetProcessIoCounters(hProcess,&ioCounters);
value=(double)((__int64)ioCounters.ReadTransferCount);
break;
case 8: // io_read_op
imp_GetProcessIoCounters(hProcess,&ioCounters);
value=(double)((__int64)ioCounters.ReadOperationCount);
break;
case 9: // io_write_b
imp_GetProcessIoCounters(hProcess,&ioCounters);
value=(double)((__int64)ioCounters.WriteTransferCount);
break;
case 10: // io_write_op
imp_GetProcessIoCounters(hProcess,&ioCounters);
value=(double)((__int64)ioCounters.WriteOperationCount);
break;
case 11: // io_other_b
imp_GetProcessIoCounters(hProcess,&ioCounters);
value=(double)((__int64)ioCounters.OtherTransferCount);
break;
case 12: // io_other_op
imp_GetProcessIoCounters(hProcess,&ioCounters);
value=(double)((__int64)ioCounters.OtherOperationCount);
break;
default: // Unknown attribute
WriteLog(MSG_UNEXPECTED_ATTRIBUTE,EVENTLOG_ERROR_TYPE,"x",attr);
value=0;
}
// Recalculate final value according to selected type
if (count==1) // First instance
{
return value;
}
switch(type)
{
case 0: // min
return min(lastValue,value);
case 1: // max
return max(lastValue,value);
case 2: // avg
return (lastValue*(count-1)+value)/count;
case 3: // sum
return lastValue+value;
default:
WriteLog(MSG_UNEXPECTED_TYPE,EVENTLOG_ERROR_TYPE,"x",type);
return 0;
}
}
//
// Get process-specific information
// Parameter has the following syntax:
// proc_info[<process>:<attribute>:<type>]
// where
// <process> - process name (same as in proc_cnt[] parameter)
// <attribute> - requested process attribute (see documentation for list of valid attributes)
// <type> - representation type (meaningful when more than one process with the same
// name exists). Valid values are:
// min - minimal value among all processes named <process>
// max - maximal value among all processes named <process>
// avg - average value for all processes named <process>
// sum - sum of values for all processes named <process>
//
LONG H_ProcInfo(char *cmd,char *arg,double *value)
{
char buffer[256];
char *ptr1,*ptr2;
int attr,type,i,procCount,counter;
DWORD *procList,dwSize;
HMODULE *modList;
static char *attrList[]=
{
"vmsize",
"wkset",
"pf",
"ktime",
"utime",
"gdiobj",
"userobj",
"io_read_b",
"io_read_op",
"io_write_b",
"io_write_op",
"io_other_b",
"io_other_op",
NULL
};
static char *typeList[]={ "min","max","avg","sum" };
// Get parameter arguments
GetParameterInstance(cmd,buffer,255);
if (!MatchString("*:*:*",buffer))
return SYSINFO_RC_NOTSUPPORTED; // Invalid parameter syntax
// Parse arguments
ptr1=strchr(buffer,':');
*ptr1=0;
ptr1++;
ptr2=strchr(ptr1,':');
*ptr2=0;
ptr2++; // Now ptr1 points to attribute and ptr2 points to type
// Get attribute code from string
for(attr=0;attrList[attr]!=NULL;attr++)
if (!strcmp(attrList[attr],ptr1))
break;
if (attrList[attr]==NULL)
return SYSINFO_RC_NOTSUPPORTED; // Unsupported attribute
if (!IsAttributeSupported(attr))
return SYSINFO_RC_NOTSUPPORTED; // Unsupported attribute
// Get type code from string
for(type=0;typeList[type]!=NULL;type++)
if (!strcmp(typeList[type],ptr2))
break;
if (typeList[type]==NULL)
return SYSINFO_RC_NOTSUPPORTED; // Unsupported type
// Gather information
*value=0; // Initialize to zero
procList=(DWORD *)malloc(MAX_PROCESSES*sizeof(DWORD));
modList=(HMODULE *)malloc(MAX_MODULES*sizeof(HMODULE));
EnumProcesses(procList,sizeof(DWORD)*MAX_PROCESSES,&dwSize);
procCount=dwSize/sizeof(DWORD);
for(i=0,counter=0;i<procCount;i++)
{
HANDLE hProcess;
hProcess=OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,FALSE,procList[i]);
if (hProcess!=NULL)
{
if (EnumProcessModules(hProcess,modList,sizeof(HMODULE)*MAX_MODULES,&dwSize))
{
if (dwSize>=sizeof(HMODULE)) // At least one module exist
{
char baseName[MAX_PATH];
GetModuleBaseName(hProcess,modList[0],baseName,sizeof(baseName));
if (!stricmp(baseName,buffer))
{
counter++; // Number of processes with specific name
*value=GetProcessAttribute(hProcess,attr,type,counter,*value);
}
}
}
CloseHandle(hProcess);
}
}
// Cleanup
free(procList);
free(modList);
return SYSINFO_RC_SUCCESS;
}
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