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

Provides access to process information. More...

`#include <src/Lib/ProcessDescriptor.h>`

## 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)

## Detailed Description

Provides access to process information.

Author
  M.Frank
  Sebastien Ponce

Definition at line 109 of file ProcessDescriptor.h.

## Constructor & Destructor Documentation

System::ProcessDescriptor::ProcessDescriptor | ( |  | ) |

Definition at line 385 of file ProcessDescriptor.cpp.

386 {
387 #ifdef _WIN32
388 static bool first = true;
389 if ( first ) {
390 first = false;
391 void* mh = ::LoadLibrary( "NTDll.dll" );
392 if ( mh ) {
393 NtApi::NtQueryInformationProcess =
394 ( NtApi::__NtQueryInformationProcess )::GetProcAddress( (HINSTANCE)mh, "NtQueryInformationProcess" );
395 }
396 }
397 #endif
398 }

System::ProcessDescriptor::~ProcessDescriptor | ( |  | ) |
| virtual

Definition at line 400 of file ProcessDescriptor.cpp.

400 {}

## Member Function Documentation

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

Definition at line 587 of file ProcessDescriptor.cpp.

588 {
589 if ( info == 0 ) return 0;
590 long status = 1;
591
592 if ( fetch == ProcessBasics ) {
593 #if defined( _WIN32 ) && WINVER >= 0x0400 // Windows NT
594 ProcessHandle h( pid );
595 status = NtApi::NtQueryInformationProcess( h.handle(), ProcessBasicInformation, info,
596 sizeof( PROCESS_BASIC_INFORMATION ), 0 );
597 status = ( status == 0 ) ? 1 : 0;
598 #elif defined( _WIN32 ) // Windows 95,98...
599 #elif defined( __linux ) // Linux
600 linux_proc prc;
601 pid = processID( pid );
602 readProcStat( pid, prc );
603 info->ExitStatus = 0;
604 info->PebBaseAddress = (PPEB)prc.startcode;
605 info->BasePriority = 2 * 15 - prc.priority;
606 // std::cout << "Base Priority=" << info->BasePriority << "|"
607 // << prc.priority << std::endl;
608 info->AffinityMask = prc.flags;
609 // std::cout << "Flags =" << info->AffinityMask << "|"
610 // << prc.flags << std::endl;
611 info->UniqueProcessId = pid;
612 info->InheritedFromUniqueProcessId = prc.ppid;
613 #else // All Other
614 #endif // End ALL OS
615 }
616 return status;
617 }
System::ProcessBasicInformation
Definition: ProcessDescriptor.cpp:24
linux_proc::flags
unsigned long flags
Definition: ProcessDescriptor.cpp:269
linux_proc
Definition: ProcessDescriptor.cpp:260
readProcStat
void readProcStat(long pid, linux_proc &pinfo)
Definition: ProcessDescriptor.cpp:303
linux_proc::priority
long priority
Definition: ProcessDescriptor.cpp:278
linux_proc::startcode
unsigned long startcode
Definition: ProcessDescriptor.cpp:286
System::PPEB
struct _PEB * PPEB
Basic Process Information NtQueryInformationProcess using ProcessBasicInfo.
Definition: ProcessDescriptor.h:18
linux_proc::ppid
int ppid
Definition: ProcessDescriptor.cpp:264
System::ProcessBasics
Definition: SystemBase.h:19
System::ProcessHandle
void * ProcessHandle
Definition of the process handle.
Definition: ModuleInfo.h:33

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

Definition at line 430 of file ProcessDescriptor.cpp.

431 {
432 if ( info == 0 ) return 0;
433 long status = 1;
434
435 if ( fetch == Quota ) {
436 #if defined( _WIN32 ) && WINVER >= 0x0400 // Windows NT
437 ProcessHandle h( pid );
438 status = NtApi::NtQueryInformationProcess( h.handle(), ProcessPooledUsageAndLimits, info,
439 sizeof( POOLED_USAGE_AND_LIMITS ), 0 );
440 status = ( status == 0 ) ? 1 : 0;
441 #elif defined( _WIN32 ) // Windows 95,98...
442 #elif defined( __linux ) // Linux
443 // rusage usage;
444 // getrusage(RUSAGE_SELF, &usage);
445 rlimit lim;
446
447 getrlimit( RLIMIT_DATA, &lim );
448 if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
449 info->PeakPagedPoolUsage = lim.rlim_cur;
450 info->PagedPoolUsage = lim.rlim_cur;
451 info->PagedPoolLimit = lim.rlim_max;
452
453 getrlimit( RLIMIT_STACK, &lim );
454 if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
455 info->PeakNonPagedPoolUsage = lim.rlim_cur;
456 info->NonPagedPoolUsage = lim.rlim_cur;
457 info->NonPagedPoolLimit = lim.rlim_max;
458
459 linux_proc prc;
460 readProcStat( processID( pid ), prc );
461 info->PeakPagefileUsage = prc.rss * pg_size;
462 info->PagefileUsage = prc.rss * pg_size;
463 info->PagefileLimit = 0xFFFFFFFF;
464 #elif defined( __APPLE__ )
465 #else // All Other
466 #endif // End ALL OS
467 }
468
469 return status;
470 }
linux_proc
Definition: ProcessDescriptor.cpp:260
readProcStat
void readProcStat(long pid, linux_proc &pinfo)
Definition: ProcessDescriptor.cpp:303
System::Quota
Definition: SystemBase.h:19
linux_proc::rss
long rss
Definition: ProcessDescriptor.cpp:284
System::ProcessPooledUsageAndLimits
Definition: ProcessDescriptor.cpp:38
System::ProcessHandle
void * ProcessHandle
Definition of the process handle.
Definition: ModuleInfo.h:33

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

Definition at line 619 of file ProcessDescriptor.cpp.

620 {
621 if ( info == 0 ) return 0;
622 long status = 1;
623
624 if ( fetch == Times ) {
625 #if defined( _WIN32 ) && WINVER >= 0x0400 // Windows NT
626 ProcessHandle h( pid );
627 status = NtApi::NtQueryInformationProcess( h.handle(), ProcessTimes, info, sizeof( KERNEL_USER_TIMES ), 0 );
628 status = ( status == 0 ) ? 1 : 0;
629 #elif defined( _WIN32 ) // Windows 95,98...
630 #elif defined( __linux ) // Linux
631 static longlong prc_start = 0;
632 bool myself = pid <= 0 || pid == ::getpid(); // avoid unnecessary calls to getpid if pid<0
633 if ( myself && prc_start == 0 ) { // called only once to set prc_start
634 linux_proc prc;
635 readProcStat( processID( pid ), prc );
636 // prc.startup is in ticks since system start, need to offset for absolute time
637 tms tmsb;
638 static longlong offset = 100 * longlong( time( nullptr ) ) - longlong( times( &tmsb ) );
639 prc_start = ( prc.starttime + offset ) * TICK_TO_100NSEC;
640 }
641
642 if ( myself ) { // myself
643 tms tmsb;
644 times( &tmsb );
645 info->UserTime = tmsb.tms_utime * TICK_TO_100NSEC;
646 info->KernelTime = tmsb.tms_stime * TICK_TO_100NSEC;
647 info->CreateTime = prc_start;
648 } else { // other process
649 linux_proc prc;
650 readProcStat( processID( pid ), prc );
651 tms tmsb;
652 static longlong offset = 100 * longlong( time( nullptr ) ) - longlong( times( &tmsb ) );
653
654 tms t;
655 times( &t );
656 info->UserTime = t.tms_utime * TICK_TO_100NSEC;
657 info->KernelTime = t.tms_stime * TICK_TO_100NSEC;
658 info->CreateTime = ( prc.starttime + offset ) * TICK_TO_100NSEC;
659 }
660 info->ExitTime = 0;
661
662 status = 1;
663
664 #elif defined( __APPLE__ )
665 // FIXME (MCl): Make an alternative function get timing on OSX
666 // times() seems to cause a segmentation fault
667 #else // no /proc file system: assume sys_start for the first call
668 tms tmsb;
669 static clock_t sys_start = times( 0 );
670 static longlong offset = 100 * longlong( time( 0 ) ) - sys_start;
671 clock_t now = times( &tmsb );
672 info->CreateTime = offset + now;
673 info->UserTime = tmsb.tms_utime;
674 info->KernelTime = tmsb.tms_stime;
675 info->CreateTime *= TICK_TO_100NSEC;
676 info->UserTime *= TICK_TO_100NSEC;
677 info->KernelTime *= TICK_TO_100NSEC;
678 info->ExitTime = 0;
679 status = 1;
680 #endif
681 }
682
683 return status;
684 }
System::Times
Definition: SystemBase.h:19
linux_proc
Definition: ProcessDescriptor.cpp:260
plotSpeedupsPyRoot.time
time
Definition: plotSpeedupsPyRoot.py:154
readProcStat
void readProcStat(long pid, linux_proc &pinfo)
Definition: ProcessDescriptor.cpp:303
__longlong
Definition: Kernel.h:56
linux_proc::starttime
unsigned long long starttime
Definition: ProcessDescriptor.cpp:282
System::ProcessTimes
Definition: ProcessDescriptor.cpp:28
longlong
__longlong longlong
Definition: Kernel.h:60
System::ProcessHandle
void * ProcessHandle
Definition of the process handle.
Definition: ModuleInfo.h:33

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

Definition at line 542 of file ProcessDescriptor.cpp.

543 {
544 if ( info == 0 ) return 0;
545 long status = 1;
546
547 if ( fetch == Quota ) {
548 #if defined( _WIN32 ) && WINVER >= 0x0400 // Windows NT
549 ProcessHandle h( pid );
550 status = NtApi::NtQueryInformationProcess( h.handle(), ProcessQuotaLimits, info, sizeof( QUOTA_LIMITS ), 0 );
551 status = ( status == 0 ) ? 1 : 0;
552 #elif defined( _WIN32 ) // Windows 95,98...
553 #elif defined( __linux ) // Linux
554 // On linux all this stuff typically is not set
555 // (ie. rlim_max=RLIM_INFINITY...)
556
557 if ( pid > 0 && pid != ::getpid() ) return 0; // only possible for myself
558
559 rlimit lim;
560 getrlimit( RLIMIT_DATA, &lim );
561 if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
562 info->PagedPoolLimit = lim.rlim_max;
563
564 getrlimit( RLIMIT_STACK, &lim );
565 if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
566 info->NonPagedPoolLimit = lim.rlim_max;
567 info->MinimumWorkingSetSize = 0;
568
569 getrlimit( RLIMIT_RSS, &lim );
570 if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
571 info->MaximumWorkingSetSize = lim.rlim_max;
572
573 getrlimit( RLIMIT_AS, &lim );
574 if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
575 info->PagefileLimit = lim.rlim_max;
576
577 getrlimit( RLIMIT_CPU, &lim );
578 if ( lim.rlim_max == RLIM_INFINITY ) lim.rlim_max = 0xFFFFFFFF;
579 info->TimeLimit = lim.rlim_max;
580 #elif defined( __APPLE__ )
581 #else // All Other
582 #endif // End ALL OS
583 }
584 return status;
585 }
System::ProcessQuotaLimits
Definition: ProcessDescriptor.cpp:25
System::Quota
Definition: SystemBase.h:19
System::ProcessHandle
void * ProcessHandle
Definition of the process handle.
Definition: ModuleInfo.h:33

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

Definition at line 500 of file ProcessDescriptor.cpp.

501 {
502 if ( info == 0 ) return 0;
503 long status = 1;
504
505 if ( fetch == Memory ) {
506 #if defined( _WIN32 ) && WINVER >= 0x0400 // Windows NT
507 ProcessHandle h( pid );
508 status = NtApi::NtQueryInformationProcess( h.handle(), ProcessVmCounters, info, sizeof( VM_COUNTERS ), 0 );
509 status = ( status == 0 ) ? 1 : 0;
510 #elif defined( _WIN32 ) // Windows 95,98...
511 #elif defined( __linux ) // Linux
512 const ssize_t bufsize = 1024;
513 char buf[bufsize];
514 pid = processID( pid );
515 sprintf( buf, "/proc/%ld/statm", pid );
516 long size, resident, share, trs, lrs, drs, dt;
517 int fd = open( buf, O_RDONLY );
518 ssize_t nread = read( fd, buf, bufsize );
519 close( fd );
520 if ( nread < bufsize && nread >= 0 ) buf[nread] = '\0';
521 fd = sscanf( buf, "%ld %ld %ld %ld %ld %ld %ld", &size, &resident, &share, &trs, &drs, &lrs, &dt );
522 linux_proc prc;
523 readProcStat( pid, prc );
524 info->PeakVirtualSize = prc.vsize;
525 info->VirtualSize = prc.vsize;
526 info->PeakWorkingSetSize = resident * pg_size;
527 info->WorkingSetSize = resident * pg_size;
528 info->QuotaPeakPagedPoolUsage = share * pg_size;
529 info->QuotaPagedPoolUsage = share * pg_size;
530 info->QuotaNonPagedPoolUsage = ( trs + drs ) * pg_size; // drs = data/stack size
531 info->QuotaPeakNonPagedPoolUsage = ( trs + drs ) * pg_size; // trs = VmExe size
532 info->PageFaultCount = prc.majflt + prc.minflt;
533 info->PagefileUsage = prc.vsize - resident * pg_size;
534 info->PeakPagefileUsage = prc.vsize - resident * pg_size;
535 #elif defined( __APPLE__ )
536 #else // All Other
537 #endif // End ALL OS
538 }
539 return status;
540 }
linux_proc::minflt
unsigned long minflt
Definition: ProcessDescriptor.cpp:270
System::Memory
Definition: SystemBase.h:19
gaudirun.fd
fd
Definition: gaudirun.py:478
std::sscanf
T sscanf(T...args)
linux_proc
Definition: ProcessDescriptor.cpp:260
hivetimeline.read
def read(f, regex='.*', skipevents=0)
Definition: hivetimeline.py:22
readProcStat
void readProcStat(long pid, linux_proc &pinfo)
Definition: ProcessDescriptor.cpp:303
linux_proc::vsize
unsigned long vsize
Definition: ProcessDescriptor.cpp:283
linux_proc::majflt
unsigned long majflt
Definition: ProcessDescriptor.cpp:272
std::sprintf
T sprintf(T...args)
System::ProcessHandle
void * ProcessHandle
Definition of the process handle.
Definition: ModuleInfo.h:33
System::ProcessVmCounters
Definition: ProcessDescriptor.cpp:27

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

Definition at line 402 of file ProcessDescriptor.cpp.

403 {
404 if ( info == 0 ) return 0;
405 long status = 1;
406
407 if ( fetch == IO ) {
408 #if defined( _WIN32 ) && WINVER >= 0x0400 // Windows NT
409 ProcessHandle h( pid );
410 status = NtApi::NtQueryInformationProcess( h.handle(), ProcessIoCounters, info, sizeof( IO_COUNTERS ), 0 );
411 status = ( status == 0 ) ? 1 : 0;
412 #elif defined( _WIN32 ) // Windows 95,98...
413 #elif defined( __linux )
414 linux_proc prc;
415 readProcStat( processID( pid ), prc );
416 rusage usage;
417 getrusage( RUSAGE_SELF, &usage );
418 info->ReadOperationCount = usage.ru_inblock;
419 info->WriteOperationCount = usage.ru_oublock;
420 info->OtherOperationCount = 0;
421 info->ReadTransferCount = usage.ru_inblock;
422 info->WriteTransferCount = usage.ru_oublock;
423 info->OtherTransferCount = 0;
424 #else // All Other
425 #endif // End ALL OS
426 }
427 return status;
428 }
linux_proc
Definition: ProcessDescriptor.cpp:260
usage
void usage(std::string argv0)
Definition: listcomponents.cpp:39
System::ProcessIoCounters
Definition: ProcessDescriptor.cpp:26
readProcStat
void readProcStat(long pid, linux_proc &pinfo)
Definition: ProcessDescriptor.cpp:303
System::IO
Definition: SystemBase.h:19
System::ProcessHandle
void * ProcessHandle
Definition of the process handle.
Definition: ModuleInfo.h:33

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

Definition at line 472 of file ProcessDescriptor.cpp.

473 {
474
475 if ( info == 0 ) return 0;
476 long status = 1;
477
478 switch ( fetch ) {
479 case PriorityBoost:
480 #if defined( _WIN32 ) && WINVER >= 0x0400 // Windows NT
481 ProcessHandle h( pid );
482 status = NtApi::NtQueryInformationProcess( h.handle(), ProcessPriorityBoost, info, sizeof( long ), 0 );
483 #elif defined( _WIN32 ) // Windows 95,98...
484 #else
485 // Not applicable
486 if ( pid > 0 ) status = 0; // to avoid compiler warning
487 status = 0;
488 *info = 0;
489 #endif // End ALL OS
490 status = ( status == 0 ) ? 1 : 0;
491 break;
492 default:
493 status = -1;
494 info = &status;
495 break;
496 }
497 return status;
498 }
System::ProcessPriorityBoost
Definition: ProcessDescriptor.cpp:46
System::PriorityBoost
Definition: SystemBase.h:19
System::ProcessHandle
void * ProcessHandle
Definition of the process handle.
Definition: ModuleInfo.h:33

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

- GaudiKernel/src/Lib/ProcessDescriptor.h
- GaudiKernel/src/Lib/ProcessDescriptor.cpp