MemoryStats.cpp

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/*----------------------------------------------------------------------------*/
/*                                                                            */
/* Copyright (c) 1995, 2004 IBM Corporation. All rights reserved.             */
/* Copyright (c) 2005-2009 Rexx Language Association. All rights reserved.    */
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/*----------------------------------------------------------------------------*/
/******************************************************************************/
/* REXX Kernel                                              Memorystats.cpp   */
/*                                                                            */
/* Support classes for managing memory profiling                              */
/*                                                                            */
/******************************************************************************/
#include "RexxCore.h"
 
 
void SegmentStats::clear()
/******************************************************************************/
/* Function:  clear out the memory statistics.                                */
/******************************************************************************/
{
    count = 0;
    smallestSegment = MaximumObjectSize;
    largestSegment = 0;
    totalBytes = 0;
    deadBytes = 0;
    liveBytes = 0;
    deadObjects = 0;
    liveObjects = 0;
}
 
 
void SegmentStats::recordObject(MemoryStats *memStats, char *obj)
/******************************************************************************/
/* Function:  Accumulate memory statistics for a scanned object               */
/******************************************************************************/
{
    /* get size of this object           */
    size_t bytes = ((RexxObject *)obj)->getObjectSize();
    totalBytes += bytes;
    /* Is this object alive?             */
    if (((RexxObject *)obj)->isObjectLive(memoryObject.markWord))
    {
        /* update the type specific counters */
        memStats->logObject((RexxObject *)obj);
        /* update total live bytes           */
        liveBytes += bytes;
        /* and total number of live objs     */
        liveObjects++;
    }
    else
    {
        /* its a dead object, update total dead objects */
        deadObjects++;
        deadBytes += bytes;
    }
}
 
 
void MemoryStats::printSavedImageStats()
/******************************************************************************/
/* Function:  Print out accumulated image statistics                          */
/******************************************************************************/
{
    printf("    ObjectTypeNum         Total Objects       TotalBytes\n");
    printf("    =============         ==============      ==========\n");
 
    for (int i = 0; i <= T_Last_Class_Type; i++)
    {
        objectStats[i].printStats(i);
    }
}
 
 
void MemoryStats::printMemoryStats()
/******************************************************************************/
/* Function:  Print out statistics for a memory snapshot                      */
/******************************************************************************/
{
    printf("All Objects in Object Memory, by allocation type\n\n");
 
    printf("    ObjectTypeNum         Total Objects       TotalBytes\n");
    printf("    =============         ==============      ==========\n");
    int i;
 
    for (i = 0; i <= T_Last_Class_Type; i++)
    {
        objectStats[i].printStats(i);
    }
 
    printf("\nSegment set allocation statistics\n\n");
 
    normalStats.printStats();
    largeStats.printStats();
}
 
 
void SegmentStats::printStats()
/******************************************************************************/
/* Function:  Print out statistics for a segment set snapshot                 */
/******************************************************************************/
{
  printf("\n\n %s:  Total bytes %lu in %lu segments \n", name, totalBytes, count);
  printf("Largest segment is %lu bytes, smallest is %lu bytes\n", largestSegment, smallestSegment);
  printf("Total Live objects %lu, using %lu bytes\n", liveObjects, liveBytes);
  printf("Total Dead objects %lu, using %lu bytes\n\n", deadObjects, deadBytes);
}
 
 
void ObjectStats::printStats(int type)
/******************************************************************************/
/* Function:  Print out accumulated statistics for an individual objec type   */
/******************************************************************************/
{
    printf("    %3d                     %8lu            %8lu  \n", type, count, size);
}
 
 
void MemoryStats::clear()
/******************************************************************************/
/* Function:  clear out the memory statistics.                                */
/******************************************************************************/
{
    normalStats.clear();
    largeStats.clear();
 
    for (int i = 0; i <= T_Last_Class_Type; i++)
    {
        objectStats[i].clear();
    }
}
 
 
void MemoryStats::logObject(RexxObject *obj)
/******************************************************************************/
/* Function:  Log the memory statistics for an individual object              */
/******************************************************************************/
{
    objectStats[obj->getObjectTypeNumber()].logObject(obj);
}