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System::ProcessDescriptor Class Reference

Provides access to process information. More...

#include <ProcessDescriptor.h>

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List of all members.

Classes

class  ProcessHandle

Public Member Functions

 ProcessDescriptor ()
virtual ~ProcessDescriptor ()
long query (long pid, InfoType info, PROCESS_BASIC_INFORMATION *buffer)
long query (long pid, InfoType info, POOLED_USAGE_AND_LIMITS *buffer)
long query (long pid, InfoType info, KERNEL_USER_TIMES *buffer)
long query (long pid, InfoType info, QUOTA_LIMITS *buffer)
long query (long pid, InfoType info, VM_COUNTERS *buffer)
long query (long pid, InfoType info, IO_COUNTERS *buffer)
long query (long pid, InfoType info, long *buffer)

Private Attributes

long m_PRIORITYBOOST [2]
IO_COUNTERS m_IO_COUNTERS [2]
VM_COUNTERS m_VM_COUNTERS [2]
KERNEL_USER_TIMES m_KERNEL_USER_TIMES [2]
POOLED_USAGE_AND_LIMITS m_POOLED_USAGE_AND_LIMITS [2]
QUOTA_LIMITS m_QUOTA_LIMITS [2]
PROCESS_BASIC_INFORMATION m_PROCESS_BASIC_INFORMATION [2]

Detailed Description

Provides access to process information.

Author:
M.Frank
Sebastien Ponce

Definition at line 110 of file ProcessDescriptor.h.

Constructor & Destructor Documentation

System::ProcessDescriptor::ProcessDescriptor (  )

Definition at line 428 of file ProcessDescriptor.cpp.

{
}
System::ProcessDescriptor::~ProcessDescriptor (  ) [virtual]

Definition at line 432 of file ProcessDescriptor.cpp.

                                              {
}

Member Function Documentation

long System::ProcessDescriptor::query ( long  pid,
InfoType  info,
PROCESS_BASIC_INFORMATION *  buffer 
)

Definition at line 638 of file ProcessDescriptor.cpp.

                                                                          {
  long status = 1;
  ProcessHandle h(pid);
  PROCESS_BASIC_INFORMATION* vb = &m_PROCESS_BASIC_INFORMATION[h.item()];
  if ( fetch == ProcessBasics )   {
#if defined(_WIN32) && WINVER>=0x0400     // Windows NT
    status = NtApi::NtQueryInformationProcess(h.handle(),
                                              ProcessBasicInformation,
                                              vb,
                                              sizeof(PROCESS_BASIC_INFORMATION),
                                              0);
    status = (status==0) ? 1 : 0;
#elif defined(_WIN32)                     // Windows 95,98...
#elif defined(linux)                      // Linux
    linux_proc prc;
    readProcStat( processID(pid), prc);
    vb->ExitStatus                   = 0;
    vb->PebBaseAddress               = (PPEB)prc.startcode;
    vb->BasePriority                 = 2*15-prc.priority;
    // std::cout << "Base Priority=" << vb->BasePriority << "|"
    // << prc.priority << std::endl;
    vb->AffinityMask                 = prc.flags;
    // std::cout << "Flags        =" << vb->AffinityMask << "|"
    // << prc.flags << std::endl;
    vb->UniqueProcessId              = processID(pid);
    vb->InheritedFromUniqueProcessId = prc.ppid;
#else                                     // All Other
#endif                                    // End ALL OS
  }
  if ( info ) *info = *vb;
  return status;
}
long System::ProcessDescriptor::query ( long  pid,
InfoType  info,
long *  buffer 
)

Definition at line 513 of file ProcessDescriptor.cpp.

                                                                           {
  long status = 1, *vb = &status;
  ProcessHandle h(pid);
  vb = &m_PRIORITYBOOST[h.item()];
  *vb = 0;
  switch ( fetch )    {
  case PriorityBoost:
#if defined(_WIN32) && WINVER>=0x0400     // Windows NT
    status = NtApi::NtQueryInformationProcess(h.handle(),
                                              ProcessPriorityBoost,
                                              vb,
                                              sizeof(long),
                                              0);
#elif defined(_WIN32)                     // Windows 95,98...
#else
    // Not applicable
    status = 0;
    *vb = 0;
#endif                                    // End ALL OS
    status = (status==0) ? 1 : 0;
    break;
  default:
    status = -1;
    vb = &status;
    break;
  }
  if ( info ) *info = *vb;
  return status;
}
long System::ProcessDescriptor::query ( long  pid,
InfoType  info,
IO_COUNTERS *  buffer 
)

Definition at line 435 of file ProcessDescriptor.cpp.

                                                         {
  long status = 1;
  ProcessHandle h(pid);
  IO_COUNTERS* vb = &m_IO_COUNTERS[h.item()];
  if ( fetch == IO )   {
#if defined(_WIN32) && WINVER>=0x0400     // Windows NT
    status = NtApi::NtQueryInformationProcess(h.handle(),
                                              ProcessIoCounters,
                                              vb,
                                              sizeof(IO_COUNTERS),
                                              0);
    status = (status==0) ? 1 : 0;
#elif defined(_WIN32)                     // Windows 95,98...
#elif defined(linux)
    linux_proc prc;
    readProcStat(processID(pid), prc);
    rusage usage;
    getrusage(RUSAGE_SELF, &usage);
    vb->ReadOperationCount    = usage.ru_inblock;
    vb->WriteOperationCount   = usage.ru_oublock;
    vb->OtherOperationCount   = 0;
    vb->ReadTransferCount     = usage.ru_inblock;
    vb->WriteTransferCount    = usage.ru_oublock;
    vb->OtherTransferCount    = 0;
#else                                     // All Other
#endif                                    // End ALL OS
  }
  if ( info ) *info = *vb;
  return status;
}
long System::ProcessDescriptor::query ( long  pid,
InfoType  info,
VM_COUNTERS *  buffer 
)

Definition at line 543 of file ProcessDescriptor.cpp.

                                                            {
  long status = 1;
  ProcessHandle h(pid);
  VM_COUNTERS* vb = &m_VM_COUNTERS[h.item()];
  if ( fetch == Memory )   {
#if defined(_WIN32) && WINVER>=0x0400     // Windows NT
    status = NtApi::NtQueryInformationProcess(h.handle(),
                                              ProcessVmCounters,
                                              vb,
                                              sizeof(VM_COUNTERS),
                                              0);
    status = (status==0) ? 1 : 0;
#elif defined(_WIN32)                     // Windows 95,98...
#elif defined(linux)                      // Linux
    const ssize_t bufsize = 1024;
    char buf[bufsize];
    sprintf(buf,"/proc/%ld/statm", processID(pid));
    long size, resident, share, trs, lrs, drs, dt;
    int fd = open(buf,O_RDONLY);
    ssize_t nread = read(fd, buf, bufsize);
    close(fd);
    if ( nread < bufsize && nread >= 0 )
      buf[nread]='\0';
    fd = sscanf(buf, "%ld %ld %ld %ld %ld %ld %ld",
                     &size, &resident, &share, &trs, &drs, &lrs, &dt);
    linux_proc prc;
    readProcStat( processID(pid), prc);
    vb->PeakVirtualSize            = prc.vsize;
    vb->VirtualSize                = prc.vsize;
    vb->PeakWorkingSetSize         = resident * pg_size;
    vb->WorkingSetSize             = resident * pg_size;
    vb->QuotaPeakPagedPoolUsage    = share    * pg_size;
    vb->QuotaPagedPoolUsage        = share    * pg_size;
    vb->QuotaNonPagedPoolUsage     = (trs+drs)* pg_size;// drs = data/stack size
    vb->QuotaPeakNonPagedPoolUsage = (trs+drs)* pg_size;// trs = VmExe size
    vb->PageFaultCount             = prc.majflt + prc.minflt;
    vb->PagefileUsage              = prc.vsize-resident*pg_size;
    vb->PeakPagefileUsage          = prc.vsize-resident*pg_size;
#elif defined(__APPLE__)
#else                                     // All Other
#endif                                    // End ALL OS
  }
  if ( info ) *info = *vb;
  return status;
}
long System::ProcessDescriptor::query ( long  pid,
InfoType  info,
QUOTA_LIMITS *  buffer 
)

Definition at line 591 of file ProcessDescriptor.cpp.

                                                             {
  long status = 1;
  ProcessHandle h(pid);
  QUOTA_LIMITS* vb = &m_QUOTA_LIMITS[h.item()];
  if ( fetch == Quota )   {
#if defined(_WIN32) && WINVER>=0x0400     // Windows NT
    status = NtApi::NtQueryInformationProcess(h.handle(),
                                              ProcessQuotaLimits,
                                              vb,
                                              sizeof(QUOTA_LIMITS),
                                              0);
    status = (status==0) ? 1 : 0;
#elif defined(_WIN32)                     // Windows 95,98...
#elif defined(linux)                      // Linux
    // On linux all this stuff typically is not set
    // (ie. rlim_max=RLIM_INFINITY...)
    rlimit lim;
    getrlimit(RLIMIT_DATA, &lim);
    if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
    vb->PagedPoolLimit        = lim.rlim_max;

    getrlimit(RLIMIT_STACK, &lim);
    if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
    vb->NonPagedPoolLimit     = lim.rlim_max;
    vb->MinimumWorkingSetSize = 0;

    getrlimit(RLIMIT_RSS, &lim);
    if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
    vb->MaximumWorkingSetSize = lim.rlim_max;

    getrlimit(RLIMIT_AS, &lim);
    if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
    vb->PagefileLimit         = lim.rlim_max;

    getrlimit(RLIMIT_CPU, &lim);
    if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
    vb->TimeLimit             = lim.rlim_max;
#elif defined(__APPLE__)
#else                                     // All Other
#endif                                    // End ALL OS
  }
  if ( info ) *info = *vb;
  return status;
}
long System::ProcessDescriptor::query ( long  pid,
InfoType  info,
KERNEL_USER_TIMES *  buffer 
)

Definition at line 673 of file ProcessDescriptor.cpp.

                                                                 {
  long status = 1;
  ProcessHandle h(pid);
  KERNEL_USER_TIMES* tb = &m_KERNEL_USER_TIMES[h.item()];;
  if ( fetch == Times )   {
#if defined(_WIN32) && WINVER>=0x0400     // Windows NT
    status = NtApi::NtQueryInformationProcess(h.handle(),
                                              ProcessTimes,
                                              tb,
                                              sizeof(KERNEL_USER_TIMES),
                                              0);
    status = (status==0) ? 1 : 0;
#elif defined(_WIN32)                     // Windows 95,98...
#elif defined(linux)                      // Linux
    // prc.startup is in ticks since system start :
    // need to offset for absolute time
    tms tmsb;
    static longlong prc_start = 0;
    //    static longlong offset = 100*longlong(time(0)) - longlong(times(0));
    static longlong offset = 100*longlong(time(0)) - longlong(times(&tmsb));
    if ( processID(pid) == s_myPid && prc_start == 0 ) {
      linux_proc prc;
      readProcStat( processID(pid), prc);
      prc_start = prc.starttime+offset;
    }

    if ( processID(pid) == s_myPid ) {
      struct rusage r;
      getrusage( RUSAGE_SELF, &r );
      tb->UserTime   = (static_cast<long long>(r.ru_utime.tv_sec) * 1000000 +
                        r.ru_utime.tv_usec) * 10;
      tb->KernelTime = (static_cast<long long>(r.ru_stime.tv_sec) * 1000000 +
                        r.ru_stime.tv_usec) * 10;
      tb->CreateTime = prc_start;
    }
    else {
      linux_proc prc;
      readProcStat( processID(pid), prc );

      tms t;
      times(&t);
      tb->UserTime   = t.tms_utime * TICK_TO_100NSEC;
      tb->KernelTime = t.tms_stime * TICK_TO_100NSEC;
      tb->CreateTime = (prc.starttime+offset);
    }
    tb->CreateTime *= TICK_TO_100NSEC;
    tb->ExitTime    = 0;

    status = 1;

#elif defined(__APPLE__)
    // FIXME (MCl): Make an alternative function get timing on OSX
    // times() seems to cause a segmentation fault
#else  // no /proc file system: assume sys_start for the first call
    tms tmsb;
    static clock_t sys_start = times(0);
    static longlong offset = 100*longlong(time(0)) - sys_start;
    clock_t now = times(&tmsb);
    tb->CreateTime    = offset + now;
    tb->UserTime      = tmsb.tms_utime;
    tb->KernelTime    = tmsb.tms_stime;
    tb->CreateTime   *= TICK_TO_100NSEC;
    tb->UserTime     *= TICK_TO_100NSEC;
    tb->KernelTime   *= TICK_TO_100NSEC;
    tb->ExitTime      = 0;
    status = 1;
#endif
  }
  if ( info ) *info = *tb;
  return status;
}
long System::ProcessDescriptor::query ( long  pid,
InfoType  info,
POOLED_USAGE_AND_LIMITS *  buffer 
)

Definition at line 468 of file ProcessDescriptor.cpp.

                                                                        {
  long status = 1;
  ProcessHandle h(pid);
  POOLED_USAGE_AND_LIMITS* vb = &m_POOLED_USAGE_AND_LIMITS[h.item()];
  if ( fetch == Quota )   {
#if defined(_WIN32) && WINVER>=0x0400     // Windows NT
    status = NtApi::NtQueryInformationProcess(h.handle(),
                                              ProcessPooledUsageAndLimits,
                                              vb,
                                              sizeof(POOLED_USAGE_AND_LIMITS),
                                              0);
    status = (status==0) ? 1 : 0;
#elif defined(_WIN32)                     // Windows 95,98...
#elif defined(linux)                      // Linux
    //rusage usage;
    //getrusage(RUSAGE_SELF, &usage);
    rlimit lim;

    getrlimit(RLIMIT_DATA, &lim);
    if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
    vb->PeakPagedPoolUsage = lim.rlim_cur;
    vb->PagedPoolUsage     = lim.rlim_cur;
    vb->PagedPoolLimit     = lim.rlim_max;

    getrlimit(RLIMIT_STACK, &lim);
    if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
    vb->PeakNonPagedPoolUsage = lim.rlim_cur;
    vb->NonPagedPoolUsage     = lim.rlim_cur;
    vb->NonPagedPoolLimit     = lim.rlim_max;

    linux_proc prc;
    readProcStat(processID(pid), prc);
    vb->PeakPagefileUsage     = prc.rss * pg_size;
    vb->PagefileUsage         = prc.rss * pg_size;
    vb->PagefileLimit         = 0xFFFFFFFF;
#elif defined(__APPLE__)
#else                                     // All Other
#endif                                    // End ALL OS
  }
  if ( info ) *info = *vb;
  return status;
}

Member Data Documentation

IO_COUNTERS System::ProcessDescriptor::m_IO_COUNTERS[2] [private]

Definition at line 125 of file ProcessDescriptor.h.

KERNEL_USER_TIMES System::ProcessDescriptor::m_KERNEL_USER_TIMES[2] [private]

Definition at line 127 of file ProcessDescriptor.h.

POOLED_USAGE_AND_LIMITS System::ProcessDescriptor::m_POOLED_USAGE_AND_LIMITS[2] [private]

Definition at line 128 of file ProcessDescriptor.h.

long System::ProcessDescriptor::m_PRIORITYBOOST[2] [private]

Definition at line 124 of file ProcessDescriptor.h.

PROCESS_BASIC_INFORMATION System::ProcessDescriptor::m_PROCESS_BASIC_INFORMATION[2] [private]

Definition at line 130 of file ProcessDescriptor.h.

QUOTA_LIMITS System::ProcessDescriptor::m_QUOTA_LIMITS[2] [private]

Definition at line 129 of file ProcessDescriptor.h.

VM_COUNTERS System::ProcessDescriptor::m_VM_COUNTERS[2] [private]

Definition at line 126 of file ProcessDescriptor.h.

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