void
vm_bootstrap(void)
{
/*
initialize locks
these locks are supposed to be resident in RAM for ever
*/
coremap_lock = lock_create("coremap");
page_lock = lock_create("page");
swap_lock = lock_create("swap");
/*
check
*/
assert(coremap_lock != NULL);
assert(page_lock != NULL);
assert(swap_lock != NULL);
// initialize coremap
coremap_bootstrap();
vmstats_init();
// coremap done
// take charge of memory management
coremap_ready = 1;
}
int
uwvmstatstest(int nargs, char **args)
{
int i, result;
char name[NAME_LEN];
(void)nargs;
(void)args;
inititems();
kprintf("Starting uwvmstatstest...\n");
kprintf("Initializing vmstats\n");
vmstats_init();
for (i=0; i<NTESTTHREADS; i++) {
snprintf(name, NAME_LEN, "vmstatsthread %d", i);
result = thread_fork(name, NULL, vmstats_thread, NULL, i);
if (result) {
panic("uwvmstatstest: thread_fork failed: %s\n",
strerror(result));
}
}
for (i=0; i<NTESTTHREADS; i++) {
P(donesem);
}
vmstats_print();
cleanitems();
kprintf("uwvmstatstest done.\n");
return 0;
}
/*
* Initial boot sequence.
*/
static
void
boot(void)
{
/*
* The order of these is important!
* Don't go changing it without thinking about the consequences.
*
* Among other things, be aware that console output gets
* buffered up at first and does not actually appear until
* dev_bootstrap() attaches the console device. This can be
* remarkably confusing if a bug occurs at this point. So
* don't put new code before dev_bootstrap if you don't
* absolutely have to.
*
* Also note that the buffer for this is only 1k. If you
* overflow it, the system will crash without printing
* anything at all. You can make it larger though (it's in
* dev/generic/console.c).
*/
kprintf("\n");
kprintf("OS/161 base system version %s\n", BASE_VERSION);
kprintf("%s", harvard_copyright);
kprintf("\n");
kprintf("CS350-036's system version %s (%s #%d)\n",
GROUP_VERSION, buildconfig, buildversion);
kprintf("\n");
#if OPT_A0
hello();
#endif /* OPT_A0 */
ram_bootstrap();
scheduler_bootstrap();
thread_bootstrap();
vfs_bootstrap();
dev_bootstrap();
#if OPT_A3
vmstats_init();
#endif
vm_bootstrap();
kprintf_bootstrap();
/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
vfs_setbootfs("emu0");
#if OPT_A3
initSwapOps();
#endif
/*
* Make sure various things aren't screwed up.
*/
assert(sizeof(userptr_t)==sizeof(char *));
assert(sizeof(*(userptr_t)0)==sizeof(char));
}