ProcessDescriptor.cpp File Reference

#include <cstdio>
#include <errno.h>
#include <fcntl.h>
#include <iostream>
#include <libgen.h>
#include <sstream>
#include <string>
#include <sys/signal.h>
#include <sys/syscall.h>
#include <sys/times.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/procfs.h>
#include <sys/resource.h>
#include <sys/time.h>
#include "ProcessDescriptor.h"
#include <GaudiKernel/ModuleInfo.h>
#include <GaudiKernel/System.h>

Include dependency graph for ProcessDescriptor.cpp:

Go to the source code of this file.

Classes
struct	linux_proc

Namespaces
namespace	System
	Note: OS specific details for environment resolution.

Enumerations
enum	System::ProcessInfoCommand {   System::ProcessBasicInformation , System::ProcessQuotaLimits , System::ProcessIoCounters , System::ProcessVmCounters ,   System::ProcessTimes , System::ProcessBasePriority , System::ProcessRaisePriority , System::ProcessDebugPort ,   System::ProcessExceptionPort , System::ProcessAccessToken , System::ProcessLdtInformation , System::ProcessLdtSize ,   System::ProcessDefaultHardErrorMode , System::ProcessIoPortHandlers , System::ProcessPooledUsageAndLimits , System::ProcessWorkingSetWatch ,   System::ProcessUserModeIOPL , System::ProcessEnableAlignmentFaultFixup , System::ProcessPriorityClass , System::ProcessWx86Information ,   System::ProcessHandleCount , System::ProcessAffinityMask , System::ProcessPriorityBoost , System::MaxProcessInfoClass ,   System::ProcessEllapsedTime }

Functions
void	readProcStat (long pid, linux_proc &pinfo)

Function Documentation

readProcStat()

void readProcStat	(	long	pid,
		linux_proc &	pinfo )

Definition at line 279 of file ProcessDescriptor.cpp.

                                                 {
 
  ssize_t cnt;
  int     fd;
  char    buf[512];
 
  std::ostringstream ost;
 
  ost << "/proc/" << pid << "/stat";
  std::string fname = ost.str();
  if ( ( fd = open( fname.c_str(), O_RDONLY ) ) < 0 ) {
    std::cerr << "Failed to open " << ost.str() << std::endl;
    return;
  }
 
  lseek( fd, 0, SEEK_SET );
  if ( ( cnt = read( fd, buf, sizeof( buf ) - 1 ) ) < 0 ) {
    std::cout << "LINUX Read of Proc file failed:" << std::endl;
    close( fd );
    return;
  }
 
  // Format
  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 %400s %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 );
  }
  close( fd );
}