core/sql/optimizer/CmpProcess.cpp

// **********************************************************************
// @@@ START COPYRIGHT @@@
//
// Licensed to the Apache Software Foundation (ASF) under one
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#include "CmpProcess.h"
#include "ComRtUtils.h"
#include "nsk/nskport.h"
#include "seabed/ms.h"
#include "seabed/fs.h"
#include <cstdlib>

// -----------------------------------------------------------------------
// Methods for class CmpProcess
// -----------------------------------------------------------------------

/************************************************************************
constructor CmpProcess

 Get some basic information about this process and setup the class.
 The process info gathered below only needs to happen once.

************************************************************************/
CmpProcess::CmpProcess()
: nodeNum_(0), 
  pin_(0), 
  segmentNum_(0),  
  processStartTime_(0) 
{

  char programDir[100];
  short processType;
  int myCPU;
  char myNodeName[MAX_SEGMENT_NAME_LEN+1];
  Lng32  myNodeNum;
  short myNodeNameLen = MAX_SEGMENT_NAME_LEN;
  char myProcessName[PROCESSNAME_STRING_LEN];
  pid_t pid;
  if (!ComRtGetProgramInfo(programDir,100,processType,myCPU,
                          pid,myNodeNum,myNodeName,myNodeNameLen,
                          processStartTime_,myProcessName))
  {
    pin_ = pid;
    nodeNum_ = myNodeNum;
    // convert to local civil time
    processStartTime_ = CONVERTTIMESTAMP(processStartTime_,0,-1,0);
  }
}
// LCOV_EXCL_START :cnu
/************************************************************************
method CmpProcess::getProcessDuration

  the number of microseconds since this process started

************************************************************************/
Int64
CmpProcess::getProcessDuration()
{
  Int64 currentTime = getCurrentTimestamp();
  return (currentTime - processStartTime_);
}
/************************************************************************
method CmpProcess::getCurrentSystemHeapSize

 Guardian procedure calls used to get the latest memory usage information
 for this process. 

************************************************************************/
Lng32
CmpProcess::getCurrentSystemHeapSize()
{
  Lng32 currentSystemHeapSize = 0;

  return currentSystemHeapSize;
}
// LCOV_EXCL_STOP
/************************************************************************
method CmpProcess::getCompilerId

parameter:
   char *id - pass an empty buffer in and get the compiler id as output

 the compiler id is made up of:

 process start timestamp - 18 digits
 node (cpu) #            - 2 digits
 pin #                   - 4 digits
 segment #               - 3 digits


************************************************************************/
void
CmpProcess::getCompilerId(char *id)
{    
  CMPASSERT( NULL != id );

  str_sprintf
    (id, "%018Ld%02d%04d%03d",
     getProcessStartTime(),        
     getNodeNum(),                      
     getPin(),                         
     getSegmentNum());                     
}