task_t *new_thread(team_t *team, uint32 ip, int kernelspace)
{
task_t *t;
int stack;
void *addr;
int i;
/* xxx this should be cleaner -- have a flag to area_create perhaps */
for(i=1023;i>0;i--){
if(!team->aspace->ptab[i]) break;
}
stack = area_create(team->aspace, 4096, i*4096, &addr, 0);
if(!stack) panic("cannot create a stack area. eek");
t = task_create(team, ip, i*4096+4092, kernelspace);
t->ustack = (void *) (i << 12);
t->stack_area = rsrc_find(RSRC_AREA,stack);
rsrc_bind(&t->rsrc, RSRC_TASK, team);
t->flags = tREADY;
if(!kernelspace) {
rsrc_enqueue(run_queue, t);
live_tasks++;
}
return t;
}
/** Try to enlarge any of the heap areas.
*
* If successful, allocate block of the given size in the area.
* Should be called only inside the critical section.
*
* @param size Gross size of item to allocate (bytes).
* @param align Memory address alignment.
*
* @return Allocated block.
* @return NULL on failure.
*
*/
static void *heap_grow_and_alloc(size_t size, size_t align)
{
if (size == 0)
return NULL;
/* First try to enlarge some existing area */
for (heap_area_t *area = first_heap_area; area != NULL;
area = area->next) {
if (area_grow(area, size + align)) {
heap_block_head_t *first =
(heap_block_head_t *) AREA_LAST_BLOCK_HEAD(area);
void *addr =
malloc_area(area, first, NULL, size, align);
malloc_assert(addr != NULL);
return addr;
}
}
/* Eventually try to create a new area */
if (area_create(AREA_OVERHEAD(size + align))) {
heap_block_head_t *first =
(heap_block_head_t *) AREA_FIRST_BLOCK_HEAD(last_heap_area);
void *addr =
malloc_area(last_heap_area, first, NULL, size, align);
malloc_assert(addr != NULL);
return addr;
}
return NULL;
}
void __libc_init_vfs (void)
{
vfs_public_port = namer_find ("vfs", 1);
vfs_local_port = port_create (vfs_public_port,"vfs_public_port");
filename_area = area_create (0x1000, 0, (void **) &nameptr, 0);
__vfs_openconn (vfs_local_port, filename_area);
}
RID Physics2DServerSW::space_create() {
Space2DSW *space = memnew(Space2DSW);
RID id = space_owner.make_rid(space);
space->set_self(id);
RID area_id = area_create();
Area2DSW *area = area_owner.get(area_id);
ERR_FAIL_COND_V(!area, RID());
space->set_default_area(area);
area->set_space(space);
area->set_priority(-1);
return id;
};
Area*
column_new(View *v, Area *pos, int scrn, uint w) {
Area *a;
assert(!pos || !pos->floating && pos->screen == scrn);
a = area_create(v, pos, scrn, w);
return a;
#if 0
if(!a)
return nil;
view_arrange(v);
view_update(v);
#endif
}
DIR *_opendir (const char *name)
{
int area;
void *ptr;
msg_hdr_t msg;
vfs_cmd_t vc;
vfs_res_t vr;
DIR *dirp;
strlcpy (nameptr, name, BLT_MAX_NAME_LENGTH);
area = area_create (0x2000, 0, &ptr, 0);
vc.cmd = VFS_OPENDIR;
vc.data[0] = 0;
vc.data[1] = area;
vc.data[2] = 0;
vc.data[3] = 0x2000;
msg.src = vfs_local_port;
msg.dst = vfs_remote_port;
msg.data = &vc;
msg.size = sizeof (vfs_cmd_t);
old_port_send (&msg);
msg.src = vfs_remote_port;
msg.dst = vfs_local_port;
msg.data = &vr;
msg.size = sizeof (vfs_res_t);
old_port_recv (&msg);
if (vr.status != VFS_OK)
{
errno = vr.errno;
return NULL;
}
//_printf ("libc: opendir got fd %d\n", vr.data[0]);
dirp = malloc (sizeof (DIR));
dirp->fd = vr.data[0];
dirp->hoffset = 0;
dirp->head = ptr;
dirp->current = ptr;
dirp->more = vr.data[2];
dirp->len = vr.data[1];
dirp->left = dirp->len;
return dirp;
}
RID PhysicsServerSW::space_create() {
SpaceSW *space = memnew( SpaceSW );
RID id = space_owner.make_rid(space);
space->set_self(id);
RID area_id = area_create();
AreaSW *area = area_owner.get(area_id);
ERR_FAIL_COND_V(!area,RID());
space->set_default_area(area);
area->set_space(space);
area->set_priority(-1);
RID sgb = body_create();
body_set_space(sgb,id);
body_set_mode(sgb,BODY_MODE_STATIC);
space->set_static_global_body(sgb);
return id;
};
int _open (const char *path, int flags, mode_t mode)
{
int i, area;
void *ptr;
msg_hdr_t msg;
vfs_cmd_t vc;
vfs_res_t vr;
vfs_fd *fd;
strlcpy (nameptr, path, BLT_MAX_NAME_LENGTH);
area = area_create (0x2000, 0, &ptr, 0);
vc.cmd = VFS_OPEN;
vc.data[0] = 0;
vc.data[1] = area;
vc.data[2] = 0;
vc.data[3] = 0x2000;
msg.src = vfs_local_port;
msg.dst = vfs_remote_port;
msg.data = &vc;
msg.size = sizeof (vfs_cmd_t);
old_port_send (&msg);
msg.src = vfs_remote_port;
msg.dst = vfs_local_port;
msg.data = &vr;
msg.size = sizeof (vfs_res_t);
old_port_recv (&msg);
if (vr.status != VFS_OK)
{
errno = vr.errno;
return -1;
}
//_printf ("libc: open got %d %d %d\n", vr.data[0], vr.data[1], vr.data[2]);
fd = malloc (sizeof (vfs_fd));
i = _fdl_alloc_descriptor (&vfs_fdl_handler, fd);
fd->buf = ptr;
fd->offset = 0;
fd->srv_fd = vr.data[0];
fd->length = vr.data[1];
fd->more = vr.data[2];
return i;
}
int console_main(void)
{
int err,i;
area_create(0x2000, 0, &screen, AREA_PHYSMAP);
console_port = port_create(0,"console_listen_port");
send_port = port_create(0,"console_send_port");
port_option(send_port, PORT_OPT_NOWAIT, 1);
err = namer_register(console_port,"console");
init_virtscreen(&statbar, 1, 80);
statbar.back = statbar.data;
statbar.data = (unsigned short *) (((uint32) screen) + 80*24*2);
statbar.lock = sem_create(1,"statbar_lock");
for(i=0;i<10;i++){
init_virtscreen(&con[i], 24, 80);
con[i].back = con[i].data;
con[i].lock = sem_create(1,"vscr_lock");
vputs(&con[i],CLEAR);
}
load(&con[0]);
status(0);
if(err) vprintf(active,"console: the namer hates us\n");
else
#ifdef CONSOLE_DEBUG
vprintf(active,"console: " FG_GREEN "online." FG_WHITE "\n");
#else
;
#endif
thr_create(keyboard_irq_thread, NULL, "console:kbd");
ready = 1;
console_thread();
return 0;
}
/** Initialize the heap allocator
*
* Create initial heap memory area. This routine is
* only called from libc initialization, thus we do not
* take any locks.
*
*/
void __malloc_init(void)
{
if (!area_create(PAGE_SIZE))
abort();
}
int main (void)
{
int area, sarea;
char *c, *rcboot, *line, *boot_servers, **params;
int i, space, p_argc, boot, fd, len, total, prog, filenum;
void *ptr;
boot_dir *dir;
line = malloc (256);
boot_servers = malloc (256);
if (!(boot = area_clone (3, 0, (void **) &dir, 0)))
{
os_console ("no uberarea; giving up");
os_debug ();
for (;;) ; /* fatal */
return 0;
}
else if ((filenum = boot_get_num (dir, "rc.boot")) < 0)
{
os_console ("no /boot/rc.boot; do you know what you're doing?");
os_debug ();
}
else
{
*line = *boot_servers = len = total = 0;
rcboot = boot_get_data (dir, filenum);
while (total < dir->bd_entry[filenum].be_vsize)
{
line[len++] = *rcboot++;
total++;
if (line[len - 1] == '\n')
{
line[len-- - 1] = 0;
for (i = space = 0, p_argc = 2; i < len; i++)
if ((line[i] == ' ') && !space)
space = 1;
else if ((line[i] != ' ') && space)
{
p_argc++;
space = 0;
}
if ((*line != '#') && *line)
{
params = malloc (sizeof (char *) * p_argc);
c = line;
for (i = 0; i < p_argc - 1; i++)
{
for (len = 0; c[len] && (c[len] != ' '); len++) ;
params[i] = malloc (len + 1);
strlcpy (params[i], c, len + 1);
c += len + 1;
}
params[i] = NULL;
if (!strcmp (params[0], "exit"))
os_terminate (1);
prog = boot_get_num (dir, params[0]);
area = area_create (dir->bd_entry[prog].be_vsize, 0,
&ptr, 0);
memcpy (ptr, boot_get_data (dir, prog),
dir->bd_entry[prog].be_vsize);
sarea = area_create (0x1000, 0, &ptr, 0);
strlcat (boot_servers, " ", 256);
strlcat (boot_servers, params[0], 256);
thr_wait (thr_spawn (0x1074, 0x3ffffd, area, 0x1000,
sarea, 0x3ff000, params[0]));
}
len = 0;
}
}
}
/* say hello */
__libc_init_fdl ();
__libc_init_console ();
__libc_init_vfs ();
printf (copyright);
printf ("init: bootstrap servers started. [ %s ]\n", boot_servers + 1);
/* if we one day pass arguments to init, we will parse them here. */
/* do some more normal stuff */
printf ("init: beginning automatic boot.\n\n");
fd = open ("/boot/rc", O_RDONLY, 0);
if (fd < 0)
printf ("error opening /boot/rc\n");
else
{
*line = len = 0;
while (read (fd, line + len++, 1) > 0)
{
if (line[len - 1] == '\n')
{
/*
line[len - 1] = 0;
if ((*line != '#') && *line)
{
// printf ("execing `%s'\n", line);
params = malloc (sizeof (char *) * 2);
params[0] = malloc (strlen (line) + 1);
strcpy (params[0], line);
params[1] = NULL;
thr_join (thr_detach (run2), 0);
}
len = 0;
*/
line[len-- - 1] = 0;
for (i = space = 0, p_argc = 2; i < len; i++)
if ((line[i] == ' ') && !space)
space = 1;
else if ((line[i] != ' ') && space)
{
p_argc++;
space = 0;
}
if ((*line != '#') && *line)
{
params = malloc (sizeof (char *) * p_argc);
c = line;
for (i = 0; i < p_argc - 1; i++)
{
for (len = 0; c[len] && (c[len] != ' '); len++) ;
params[i] = malloc (len + 1);
strlcpy (params[i], c, len + 1);
c += len + 1;
}
params[i] = NULL;
if (!strcmp (params[0], "exit"))
os_terminate (1);
i = execve (params[0], params, NULL);
if(i>0) thr_wait(i);
else printf("cannot execute \"%s\"\n",params[0]);
}
len = 0;
}
}
close (fd);
}
printf ("init: nothing left to do\n");
return 0;
}
void go_kernel(void)
{
task_t *t;
int i,len;
void *ptr,*phys;
port_t *uberport;
area_t *uberarea;
team_t *team;
for (i = 0, len = 1; (bdir->bd_entry[i].be_type != BE_TYPE_NONE); i++){
len += bdir->bd_entry[i].be_size;
}
len *= 0x1000;
uberport = rsrc_find_port(uberportnum = port_create(0,"uberport"));
uberarea = rsrc_find_area(uberareanum = area_create_uber(len,
(void *) 0x100000));
kprintf("uberport allocated with rid = %d",uberportnum);
kprintf("uberarea allocated with rid = %d",uberareanum);
kernel_team = team_create();
rsrc_set_name(&kernel_team->rsrc, "kernel team");
run_queue = rsrc_find_queue(queue_create("run queue",kernel_team));
reaper_queue = rsrc_find_queue(queue_create("reaper queue",kernel_team));
timer_queue = rsrc_find_queue(queue_create("timer queue",kernel_team));
rsrc_set_owner(&uberarea->rsrc,kernel_team);
rsrc_set_owner(&uberport->rsrc,kernel_team);
for(i=3;bdir->bd_entry[i].be_type;i++){
if(bdir->bd_entry[i].be_type != BE_TYPE_CODE) continue;
team = team_create();
t = new_thread(team, 0x1074 /*bdir->bd_entry[i].be_code_ventr*/, 0);
current = t;
phys = (void *) (bdir->bd_entry[i].be_offset*0x1000 + 0x100000);
team->text_area = area_create(team->aspace,bdir->bd_entry[i].be_size*0x1000,
0x1000, &phys, AREA_PHYSMAP);
team->heap_id = area_create(team->aspace,0x2000,0x1000 + bdir->bd_entry[i].be_size*
0x1000, &ptr, 0);
/* make the thread own it's address space */
/* rsrc_set_owner(&a->rsrc, t); */
if (!strcmp (bdir->bd_entry[i].be_name, "namer")) {
rsrc_set_owner(&uberport->rsrc, team);
}
rsrc_set_name(&t->rsrc,bdir->bd_entry[i].be_name);
rsrc_set_name(&team->rsrc,bdir->bd_entry[i].be_name);
kprintf("task %X @ 0x%x, size = 0x%x (%s)",t->rsrc.id,
bdir->bd_entry[i].be_offset*4096+0x100000,
bdir->bd_entry[i].be_size*4096,
t->rsrc.name);
}
kprintf("creating idler...");
idle_task = new_thread(kernel_team, (int) idler, 1);
rsrc_set_name((resource_t*)idle_task,"idler");
kprintf("creating grim reaper...");
current = new_thread(kernel_team, (int) reaper, 1);
rsrc_set_name((resource_t*)current,"grim reaper");
reaper_sem = sem_create(0,"death toll");
rsrc_enqueue(run_queue, current);
live_tasks++;
kprintf("creating pager...");
current = pager_task = new_thread(kernel_team, (int) pager, 1);
rsrc_set_name((resource_t*)current,"pager");
pager_port_no = port_create(0,"pager port");
pager_sem_no = sem_create(0, "pager sem");
rsrc_enqueue(run_queue, current);
live_tasks++;
rsrc_set_name((resource_t*)kernel,"kernel");
#ifdef __SMP__
smp_init ();
#endif
// DEBUGGER();
kprintf("starting scheduler...");
#ifdef __SMP__
if (smp_configured)
{
smp_final_setup ();
kprintf ("smp: signaling other processors");
smp_begin ();
}
#endif
/*
* when the new vm stuffas are done, we can at this point discard any
* complete pages in the .text.init and .data.init sections of the kernel
* by zeroing them and adding them to the free physical page pool.
*/
current = kernel;
current->flags = tDEAD;
current->waiting_on = NULL;
swtch();
kprintf("panic: returned from scheduler?");
asm("hlt");
}
/* test functions */
static int
test_area (AREA_CREATE_INFO * info, int nthreads, void *(*proc) (void *))
{
#define MAX_THREADS 64
AREA *area = NULL;
pthread_t threads[MAX_THREADS];
char msg[256];
int i;
assert (info != NULL);
sprintf (msg, "%s(size:%d, count:%d), %d threads", info->name, info->entry_size, info->alloc_cnt, nthreads);
begin (msg);
/* initialization */
if (nthreads > MAX_THREADS)
{
return fail ("too many threads");
}
/* initialization */
area_init ();
area = area_create (info->name, info->entry_size, info->alloc_cnt);
if (area == NULL)
{
return fail ("area create fail");
}
/* multithreaded test */
for (i = 0; i < nthreads; i++)
{
if (pthread_create (&threads[i], NULL, proc, (void *) area) != NO_ERROR)
{
return fail ("thread create");
}
}
for (i = 0; i < nthreads; i++)
{
void *retval;
pthread_join (threads[i], &retval);
if (retval != NO_ERROR)
{
return fail ("thread proc error");
}
}
/* results */
{
AREA_BLOCKSET_LIST *blockset;
AREA_BLOCK *block;
int i, j, blockset_cnt = 0, block_cnt = 0, chunk_count;
for (blockset = area->blockset_list; blockset != NULL; blockset = blockset->next)
{
for (i = 0; i < blockset->used_count; i++)
{
block = blockset->items[i];
assert (block != NULL);
chunk_count = CEIL_PTVDIV (block->bitmap.entry_count, LF_BITFIELD_WORD_SIZE);
for (j = 0; j < chunk_count; j++)
{
if (block->bitmap.bitfield[j])
{
return fail ("check bitmap status");
}
}
block_cnt++;
}
blockset_cnt++;
}
printf (" Used %3d blocks(%2d blocksets). ", block_cnt, blockset_cnt);
}
/* destory */
area_destroy (area);
area_final ();
return success ();
#undef MAX_THREADS
}