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

void thread_func()
{
    printf( "thread pid=%d, thread tid=%d\n", getpid(), syscall( SYS_gettid ) );

    size_t one_hundred_mb = 100 * 1024 * 1024;
    void * allocatedChunk = malloc ( one_hundred_mb );
    memset( allocatedChunk, 0, one_hundred_mb );

    if ( allocatedChunk == NULL )
    {
        printf("couldn't allocate\n");
    }
    else
    {
        int tid = syscall( SYS_gettid );
        printf( "PID: %d, TID: %d - has allocated 100mb\n", getpid(), syscall( SYS_gettid ) );
    }

    sleep(1000);
}

void main()
{
    printf( "main pid=%d, main tid=%d\n", getpid(), syscall( SYS_gettid ) );

    pthread_t thread1;
    pthread_create( &thread1, NULL, (void *)&thread_func, NULL);

/*    pid_t childpid;
    childpid = fork();

    if ( childpid >= 0 )
    {
       if ( childpid == 0 )
       {
          thread_func(); // child
       }
       else
       {
          sleep(1000); // parent
       }
    }
    else
    {
       perror("fork");
       exit(0);
    } */

    sleep(1000);
}