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Classes | Public Member Functions | Private Attributes | List of all members
System::ProcessDescriptor Class Reference

Provides access to process information. More...

`#include <ProcessDescriptor.h>`

Collaboration diagram for System::ProcessDescriptor:
[legend]

## 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,
|  | 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;
}

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,
|  | 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,
|  | 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,
|  | 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,
|  | 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;
}

## 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.

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

- /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v25r0/GaudiKernel/src/Lib/ProcessDescriptor.h
- /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v25r0/GaudiKernel/src/Lib/ProcessDescriptor.cpp