#include <stdio.h>
#include <stdlib.h>

//testing malloc() this is 32 bit gcc - separate from Perl
void testMalloc(void)
{
    char* x = (char *) malloc(1);
    printf ("     Byte Starting Memory Addr is %p\n",x);
    char* y = (char *) malloc(1);
    printf ("Next Byte Starting Memory Addr is %p\n",y);
    printf ("difference in bytes between byte2 and byte1 = %d\n",y-x);
    char* z = (char *) malloc(1);
    printf ("Next Byte Starting Memory Addr is %p\n",z);
    printf ("difference in bytes between byte3 and byte2 = %d\n",z-y);
    char* alpha = (char *) malloc(1);
    printf ("Next Byte Starting Memory Addr is %p\n",alpha);
    printf ("difference in bytes between byte4 and byte3 = %d\n",z-y);
    free(x);
    free(y);
    free(z);
    free(alpha);

    return;
}

int main(int argc, char *argv[])
{

   testMalloc();
   exit(0);
}

/*
     Byte Starting Memory Addr is 00C92FD8
Next Byte Starting Memory Addr is 00C90CC8
difference in bytes between byte2 and byte1 = -8976
Next Byte Starting Memory Addr is 00C90CD8
difference in bytes between byte3 and byte2 = 16
Next Byte Starting Memory Addr is 00C90CE8
difference in bytes between byte4 and byte3 = 16
*/

/*
     Byte Starting Memory Addr is 00B22FD8
Next Byte Starting Memory Addr is 00B20CC8
difference in bytes between byte2 and byte1 = -8976
Next Byte Starting Memory Addr is 00B20CD8
difference in bytes between byte3 and byte2 = 16
Next Byte Starting Memory Addr is 00B20CE8
difference in bytes between byte4 and byte3 = 16
*/

##</code><code>##

#################################################
# testing malloc 64 bit Perl
use strict;
use warnings;

use Inline C => Config =>
  BUILD_NOISY => 1,
  CLEAN_AFTER_BUILD => 0,
  USING => 'ParseRegExp',
  ;

use Inline "C";

testMalloc();

=OUTPUT:
     Byte Starting Memory Addr is 000000000308CE68
Next Byte Starting Memory Addr is 000000000308D258
difference in bytes between byte2 and byte1 = 1008
Next Byte Starting Memory Addr is 000000000308D018
difference in bytes between byte3 and byte2 = -576
Next Byte Starting Memory Addr is 000000000308D0A8
difference in bytes between byte4 and byte3 = -576
=cut

=AnotherRun:
     Byte Starting Memory Addr is 00000000031157D8
Next Byte Starting Memory Addr is 0000000003115B98
difference in bytes between byte2 and byte1 = 960
Next Byte Starting Memory Addr is 0000000003115E98
difference in bytes between byte3 and byte2 = 768
Next Byte Starting Memory Addr is 0000000003115F88
difference in bytes between byte4 and byte3 = 768
=cut

=yet Another Run
     Byte Starting Memory Addr is 0000000002EA6CF8
Next Byte Starting Memory Addr is 0000000002EA6EA8
difference in bytes between byte2 and byte1 = 432
Next Byte Starting Memory Addr is 0000000002EA7AA8
difference in bytes between byte3 and byte2 = 3072
Next Byte Starting Memory Addr is 0000000002EA7C58
difference in bytes between byte4 and byte3 = 3072
=cut

=one more time
     Byte Starting Memory Addr is 000000000313CE38
Next Byte Starting Memory Addr is 000000000313C5F8
difference in bytes between byte2 and byte1 = -2112
Next Byte Starting Memory Addr is 000000000313C868
difference in bytes between byte3 and byte2 = 624
Next Byte Starting Memory Addr is 000000000313CA48
difference in bytes between byte4 and byte3 = 624
=cut


__END__
__C__

void testMalloc(void)
{
    char* x = (char *) malloc(1);
    printf ("     Byte Starting Memory Addr is %p\n",x);
    char* y = (char *) malloc(1);
    printf ("Next Byte Starting Memory Addr is %p\n",y);
    printf ("difference in bytes between byte2 and byte1 = %d\n",y-x);
    char* z = (char *) malloc(1);
    printf ("Next Byte Starting Memory Addr is %p\n",z);
    printf ("difference in bytes between byte3 and byte2 = %d\n",z-y);
    char* alpha = (char *) malloc(1);
    printf ("Next Byte Starting Memory Addr is %p\n",alpha);
    printf ("difference in bytes between byte4 and byte3 = %d\n",z-y);
    
    free(x);
    free(y);
    free(z);
    free(alpha);

    return;
}