/************************** File Header ***************************************

 * File Name            : TC1_memV2.c
 * Author               : Patni Computer Systems
 * Description          : Allocation/deallocation of memory in a single thread

*************************** End of File Header ********************************/

/************************* Include Section ************************************/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>

/*********************** End of Include Section *******************************/

/*********************** Functions Section ************************************/

/************************ Function Header **************************************
  
 * Function Name     : 	main
 * Description       :  Allocation/deallocation of memeory in a single thread
 * Input Values      :  int size , int count
 * Return Values     :  
 
*******************************************************************************/

int main(int argc, char *argv[])
{
     int l_iIndex=0,l_iCount=0;
     size_t l_iSize=0;
     int l_iStartRet=0,l_iEndRet=0;
     char *l_pcTemp=NULL;
     double l_dUsecs=0;

     int j; char *pcTemp;

     struct timeval l_stTimeValStart,l_stTimeValEnd,l_stTimeValDiff;
 
     /* checking for argument count */
     if(3 != argc)
     {
         printf("Usage : <program name> <size> <loops> \n ");
         exit(1);
     }

     l_iSize = atoi(argv[1]);
     l_iCount = atoi(argv[2]);

    

     /* Marking the start time */
     l_iStartRet = gettimeofday(&l_stTimeValStart,NULL);
   
     /* Allocating and Deallocating l_iSize bytes l_iCount times */
     for(l_iIndex = 0; l_iIndex < l_iCount ; l_iIndex++)
     {
         l_pcTemp = (char *)malloc(l_iSize); 
         if(NULL == l_pcTemp)
         {
             printf("Memory allocation failed  \n");    
             exit(1);
         }
//         printf(" Start Address %p \n",l_pcTemp);
  //       printf(" End Address %p \n",l_pcTemp+l_iSize-1);    
         memset(l_pcTemp,0,l_iSize); 
         free(l_pcTemp);
   
    }   
 

  

  
    /* Marking End time */
    l_iEndRet = gettimeofday(&l_stTimeValEnd,NULL);
  
    /* Checking gettimeofday  return status */
    if(0 != l_iStartRet )
    { 
        printf(" Marking start time failed \n");
        exit(1);
    }
    if(0 != l_iEndRet)
    {
        printf(" Marking End time failed \n");
        exit(1);
    }
    
    #ifdef DEBUG
    /*Printing Start and End time */
    printf("Allocating and Deallocating %d Bytes %d times \n",l_iSize,l_iCount);
    printf("Start time : %u seconds %u useconds \n",l_stTimeValStart.tv_sec,l_stTimeValStart.tv_usec);
    printf("End time : %u seconds %u useconds \n",l_stTimeValEnd.tv_sec,l_stTimeValEnd.tv_usec);
    #endif  
   
    /* Calculating the Difference */
    timersub(&l_stTimeValEnd,&l_stTimeValStart,&l_stTimeValDiff);
    
    #ifdef DEBUG
    printf("%d Bytes of malloc time for %d no of loops = %u seconds %u useconds \n",l_iSize,l_iCount,l_stTimeValDiff.tv_sec,l_stTimeValDiff.tv_usec);
    #endif
 
    /* Calculation of Total time taken */
    l_dUsecs = (l_stTimeValDiff.tv_sec * 1000000) + l_stTimeValDiff.tv_usec ;
    printf("Total time taken  %f usecs \n",l_dUsecs);
    printf("Time for 1 loop  %f usecs \n",l_dUsecs/l_iCount);

    return 0;
}
    
/******************* End of Functions  Section ********************************/