/*
 * Copyright 2002-2019 Intel Corporation.
 * 
 * This software is provided to you as Sample Source Code as defined in the accompanying
 * End User License Agreement for the Intel(R) Software Development Products ("Agreement")
 * section 1.L.
 * 
 * This software and the related documents are provided as is, with no express or implied
 * warranties, other than those that are expressly stated in the License.
 */

#include <stdio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <pthread.h>
#include <sys/mman.h>
#include <unistd.h>

static void* ptr = NULL;

void allocate_memory() __attribute__ ((noinline));
void free_memory() __attribute__ ((noinline));

void allocate_memory()
{
    ptr = mmap(NULL, getpagesize(), PROT_READ, MAP_PRIVATE | MAP_ANON, -1 ,0);
}

void free_memory()
{
    munmap(ptr, getpagesize());
}

int main()
{
    allocate_memory();
    pid_t child_id = fork();
    if (child_id == 0)
    {
        printf("APPLICATION: After fork in child\n");
    }
    else
    {
        int status;
        free_memory();
        printf("APPLICATION: After fork in parent\n");
        waitpid(child_id, &status, 0);
        if (WIFEXITED(status))
        {
            status = WEXITSTATUS(status);
        }
        else if (WIFSIGNALED(status))
        {
            status = 128 + WTERMSIG(status);
        }
        return status;
    }

    return 0;
}