size_test.c

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <pthread.h>
#include <stdint.h>
#include <inttypes.h>
#include <pthread.h>

#include "config.h"
#include "spew.h"
#include "assert.h"
#include "debug_lock.h"
#include "shm_arena.h"
#include "arena.h"

int main(void)
{

  printf("The segment overhead without added rwlock is: %zu bytes\n",
     CHUNKS(sizeof(struct seg_header)) +
     CHUNKS(sizeof(struct seg_footer)));

  printf("The segment overhead with added rwlock is: %zu bytes\n",
     CHUNKS(sizeof(struct seg_header)) +
     CHUNKS(sizeof(pthread_rwlock_t)) +
     CHUNKS(sizeof(struct seg_footer)));

  printf("sizeof(pthread_rwlock_t)=%zu  CHUNKS(sizeof(pthread_rwlock_t))=%zu\n",
     sizeof(pthread_rwlock_t), CHUNKS(sizeof(pthread_rwlock_t)) );

  printf("sizeof(struct seg_footer)=%zu\n",
     sizeof(struct seg_footer));


  printf("sizeof(struct seg_header)=%zu\n",
     sizeof(struct seg_header));

  return 0;
}