| # Gaudi Framework, version v22r4 |

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# ProcStats Class Reference

`#include <ProcStats.h>`

Collaboration diagram for ProcStats:
[legend]

List of all members.

## Classes
struct | cleanup
## Public Member Functions
bool | fetch (procInfo &fill_me)
double | pageSize () const
## Static Public Member Functions
static ProcStats * | instance ()
## Private Member Functions
| ProcStats ()
| ~ProcStats ()
## Private Attributes
int | fd
double | pg_size
procInfo | curr
std::string | fname
char | buf [500]
bool | valid
## Static Private Attributes
static ProcStats * | inst = 0
## Friends
struct | cleanup

## Detailed Description

Definition at line 37 of file ProcStats.h.

## Constructor & Destructor Documentation

ProcStats::ProcStats | ( | ) | `[private]`

Definition at line 249 of file ProcStats.cpp.

                        :valid(false)
    {
    #ifdef __linux
      pg_size = sysconf(_SC_PAGESIZE); // getpagesize();
      std::ostringstream ost;

      ost << "/proc/" << getpid() << "/stat";
      fname = ost.str();
      if((fd=open(fname.c_str(),O_RDONLY))<0)
      {
        cerr << "Failed to open " << ost.str() << endl;
        return;
      }
    #endif
      valid=true;
    }

ProcStats::~ProcStats | ( | ) | `[private]`

Definition at line 266 of file ProcStats.cpp.

    {
    #ifdef __linux
      close(fd);
    #endif
    }

## Member Function Documentation

bool ProcStats::fetch | ( | procInfo & | fill_me ) |

Definition at line 273 of file ProcStats.cpp.

    {
      if( valid == false ) return false;

    #ifdef __linux
      double pr_size, pr_rssize;
      linux_proc pinfo;
      int cnt;

      lseek(fd,0,SEEK_SET);

      if((cnt=read(fd,buf,sizeof(buf)))<0)
      {
        cout << "LINUX Read of Proc file failed:" << endl;
        return false;
      }

      if(cnt>0)
      {
        buf[cnt]='\0';

        sscanf(buf,
            //1  2  3  4  5  6  7  8  9  10  1   2   3   4   5   6   7   8   9   20  1   2   3   4   5   6   7   8   9   30  1   2   3   4   5
            "%d %s %c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %ld %ld %ld %ld %ld %ld %llu %lu %ld %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu",
            &pinfo.pid,
            pinfo.comm,
            &pinfo.state,
            &pinfo.ppid,
            &pinfo.pgrp,
            &pinfo.session,
            &pinfo.tty,
            &pinfo.tpgid,
            &pinfo.flags,
            &pinfo.minflt,
            &pinfo.cminflt,
            &pinfo.majflt,
            &pinfo.cmajflt,
            &pinfo.utime,
            &pinfo.stime,
            &pinfo.cutime,
            &pinfo.cstime,
            &pinfo.priority,
            &pinfo.nice,
            &pinfo.num_threads,
            &pinfo.itrealvalue,
            &pinfo.starttime,
            &pinfo.vsize,
            &pinfo.rss,
            &pinfo.rlim,
            &pinfo.startcode,
            &pinfo.endcode,
            &pinfo.startstack,
            &pinfo.kstkesp,
            &pinfo.kstkeip,
            &pinfo.signal,
            &pinfo.blocked,
            &pinfo.sigignore,
            &pinfo.sigcatch,
            &pinfo.wchan
            );

          // resident set size in pages
        pr_size = (double)pinfo.vsize;
        pr_rssize = (double)pinfo.rss;

        f.vsize = pr_size   / (1024*1024);
        f.rss   = pr_rssize * pg_size / (1024*1024);
      }

    #else
      f.vsize = 0;
      f.rss   = 0;
    #endif

      bool rc = (curr==f)?false:true;

      curr.rss=f.rss;
      curr.vsize=f.vsize;

      return rc;
    }

ProcStats * ProcStats::instance | ( | ) | `[static]`

Definition at line 240 of file ProcStats.cpp.

                                   {
      static cleanup c;
      if(inst==0)
        inst = new ProcStats;
      return inst;
    }

double ProcStats::pageSize | ( | ) | const`[inline]`

Definition at line 43 of file ProcStats.h.

    { return pg_size; }

## Friends And Related Function Documentation

friend struct cleanup`[friend]`

Definition at line 55 of file ProcStats.h.

## Member Data Documentation

char ProcStats::buf[500]`[private]`

Definition at line 61 of file ProcStats.h.

procInfo ProcStats::curr`[private]`

Definition at line 59 of file ProcStats.h.

int ProcStats::fd`[private]`

Definition at line 57 of file ProcStats.h.

std::string ProcStats::fname`[private]`

Definition at line 60 of file ProcStats.h.

ProcStats * ProcStats::inst = 0`[static, private]`

Definition at line 64 of file ProcStats.h.

double ProcStats::pg_size`[private]`

Definition at line 58 of file ProcStats.h.

bool ProcStats::valid`[private]`

Definition at line 62 of file ProcStats.h.

The documentation for this class was generated from the following files:

- /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v22r4/GaudiAud/src/ProcStats.h
- /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v22r4/GaudiAud/src/ProcStats.cpp

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