static void ram_init (void);
static void paging_init (void);
static void argv_init (void);
+static void print_stats (void);
int main (void) NO_RETURN;
int
main (void)
{
- /* Initialize everything needed for printf() first. */
+ /* Clear BSS and get machine's RAM size. */
ram_init ();
+
+ /* Initialize ourselves as a thread so we can use locks. */
thread_init ();
+
+ /* Initialize the console so we can use printf(). */
vga_init ();
serial_init_poll ();
console_init ();
/* Greet user. */
- printf ("Pintos booting with %'zd kB RAM...\n", ram_pages * (PGSIZE / 1024));
+ printf ("Pintos booting with %'zu kB RAM...\n", ram_pages * PGSIZE / 1024);
/* Parse command line. */
argv_init ();
- /* Initialize memory system, segments, paging. */
+ /* Initialize memory system. */
palloc_init ();
+ malloc_init ();
paging_init ();
+
+ /* Segmentation. */
#ifdef USERPROG
tss_init ();
gdt_init ();
#endif
- malloc_init ();
/* Set random seed if argv_init() didn't. */
random_init (0);
/* Run a user program. */
if (initial_program != NULL)
{
+ tid_t tid;
printf ("\nExecuting '%s':\n", initial_program);
- process_execute (initial_program);
+ tid = process_execute (initial_program);
+#ifdef THREAD_JOIN_IMPLEMENTED
+ if (tid != TID_ERROR)
+ thread_join (tid);
+#endif
}
#else
+ /* Run the compiled-in test function. */
test ();
#endif
+ /* Finish up. */
if (do_power_off)
power_off ();
-
- /* Terminate this thread. */
- thread_exit ();
+ else
+ thread_exit ();
}
\f
/* Clear BSS and obtain RAM size from loader. */
uint32_t *pd, *pt;
size_t page;
- pd = base_page_dir = palloc_get (PAL_ASSERT | PAL_ZERO);
+ pd = base_page_dir = palloc_get_page (PAL_ASSERT | PAL_ZERO);
pt = NULL;
for (page = 0; page < ram_pages; page++)
{
if (pd[pde_idx] == 0)
{
- pt = palloc_get (PAL_ASSERT | PAL_ZERO);
+ pt = palloc_get_page (PAL_ASSERT | PAL_ZERO);
pd[pde_idx] = pde_create (pt);
}
#ifdef USERPROG
else if (!strcmp (argv[i], "-ex"))
initial_program = argv[++i];
+ else if (!strcmp (argv[i], "-ul"))
+ user_page_limit = atoi (argv[++i]);
#endif
#ifdef FILESYS
- else if (!strcmp (argv[i], "-f"))
+ else if (!strcmp (argv[i], "-f"))
format_filesys = true;
else if (!strcmp (argv[i], "-ci"))
{
" -d CLASS[,...] Enable the given classes of debug messages.\n"
#ifdef USERPROG
" -ex 'PROG [ARG...]' Run PROG, passing the optional arguments.\n"
+ " -ul USER_MAX Limit user memory to USER_MAX pages.\n"
#endif
#ifdef FILESYS
" -f Format the filesystem disk (hdb or hd0:1).\n"
filesys_done ();
#endif
+ print_stats ();
+
printf ("Powering off...\n");
+ serial_flush ();
+
for (p = s; *p != '\0'; p++)
outb (0x8900, *p);
for (;;);
}
+
+/* Print statistics about Pintos execution. */
+static void
+print_stats (void)
+{
+ timer_print_stats ();
+ thread_print_stats ();
+#ifdef FILESYS
+ disk_print_stats ();
+#endif
+ console_print_stats ();
+ kbd_print_stats ();
+#ifdef USERPROG
+ exception_print_stats ();
+#endif
+}