int migrator_loop()
{
task_register_cons *trc;
while (1) {
vTaskDelay(1000/portTICK_RATE_MS);
if ((trc = task_find("rtuapp"))) {
if (!task_wait_for_checkpoint(trc, cp_req_rtu)) {
ERROR_MSG("%s: Failed to reach rtu checkpoint for task \"%s\"\n",
__func__, trc->name);
return 0;
}
Elf32_Ehdr *new_sw = (Elf32_Ehdr *)&_rtuappv2_elf_start;
INFO_MSG("Starting runtime update.\n");
if (!migrator_runtime_update(trc, new_sw)) {
ERROR_MSG("Runtime updating failed.\n");
return 0;
}
INFO_MSG("Runtime update complete. (-> v2)\n");
}
vTaskDelay(1000/portTICK_RATE_MS);
if ((trc = task_find("rtuapp"))) {
if (!task_wait_for_checkpoint(trc, cp_req_rtu)) {
ERROR_MSG("%s: Failed to reach rtu checkpoint for task \"%s\"\n",
__func__, trc->name);
return 0;
}
Elf32_Ehdr *new_sw = (Elf32_Ehdr *)&_rtuappv1_elf_start;
INFO_MSG("Starting runtime update.\n");
if (!migrator_runtime_update(trc, new_sw)) {
ERROR_MSG("Runtime updating failed.\n");
return 0;
}
INFO_MSG("Runtime update complete. (-> v1)\n");
}
}
}
/*
* task_hold_by_id(), task_hold_by_id_zone()
*
* Overview
* task_hold_by_id() is used to take a reference on a task by its task id,
* supporting the various system call interfaces for obtaining resource data,
* delivering signals, and so forth.
*
* Return values
* Returns a pointer to the task_t with taskid_t id. The task is returned
* with its hold count incremented by one. Returns NULL if there
* is no task with the requested id.
*
* Caller's context
* Caller must not be holding task_hash_lock. No restrictions on context.
*/
task_t *
task_hold_by_id_zone(taskid_t id, zoneid_t zoneid)
{
task_t *tk;
mutex_enter(&task_hash_lock);
if ((tk = task_find(id, zoneid)) != NULL)
atomic_inc_32(&tk->tk_hold_count);
mutex_exit(&task_hash_lock);
return (tk);
}
int effect_start_and_config
(const char *new_task_name,
const char *binary_name,
binary_register_entry *bre,
u_int16_t init_width,
u_int16_t init_height,
u_int16_t init_w_offset,
u_int16_t init_h_offset)
{
if (!alloc_link_start_from_binary_register(new_task_name, binary_name, bre)) {
return 0;
}
task_register_cons *trc = task_find(new_task_name);
if (trc == NULL) {
return 0;
}
return effect_config(trc,
init_width, init_height,
init_w_offset, init_h_offset);
}
/*
* void task_init(void)
*
* Overview
* task_init() initializes task-related hashes, caches, and the task id
* space. Additionally, task_init() establishes p0 as a member of task0.
* Called by main().
*
* Return values
* None.
*
* Caller's context
* task_init() must be called prior to MP startup.
*/
void
task_init(void)
{
proc_t *p = &p0;
mod_hash_hndl_t hndl;
rctl_set_t *set;
rctl_alloc_gp_t *gp;
rctl_entity_p_t e;
/*
* Initialize task_cache and taskid_space.
*/
task_cache = kmem_cache_create("task_cache", sizeof (task_t),
0, NULL, NULL, NULL, NULL, NULL, 0);
taskid_space = id_space_create("taskid_space", 0, MAX_TASKID);
/*
* Initialize task hash table.
*/
task_hash = mod_hash_create_idhash("task_hash", task_hash_size,
mod_hash_null_valdtor);
/*
* Initialize task-based rctls.
*/
rc_task_lwps = rctl_register("task.max-lwps", RCENTITY_TASK,
RCTL_GLOBAL_NOACTION | RCTL_GLOBAL_COUNT, INT_MAX, INT_MAX,
&task_lwps_ops);
rc_task_nprocs = rctl_register("task.max-processes", RCENTITY_TASK,
RCTL_GLOBAL_NOACTION | RCTL_GLOBAL_COUNT, INT_MAX, INT_MAX,
&task_procs_ops);
rc_task_cpu_time = rctl_register("task.max-cpu-time", RCENTITY_TASK,
RCTL_GLOBAL_NOACTION | RCTL_GLOBAL_DENY_NEVER |
RCTL_GLOBAL_CPU_TIME | RCTL_GLOBAL_INFINITE |
RCTL_GLOBAL_UNOBSERVABLE | RCTL_GLOBAL_SECONDS, UINT64_MAX,
UINT64_MAX, &task_cpu_time_ops);
/*
* Create task0 and place p0 in it as a member.
*/
task0p = kmem_cache_alloc(task_cache, KM_SLEEP);
bzero(task0p, sizeof (task_t));
task0p->tk_tkid = id_alloc(taskid_space);
task0p->tk_usage = kmem_zalloc(sizeof (task_usage_t), KM_SLEEP);
task0p->tk_inherited = kmem_zalloc(sizeof (task_usage_t), KM_SLEEP);
task0p->tk_proj = project_hold_by_id(0, &zone0,
PROJECT_HOLD_INSERT);
task0p->tk_flags = TASK_NORMAL;
task0p->tk_nlwps = p->p_lwpcnt;
task0p->tk_nprocs = 1;
task0p->tk_zone = global_zone;
task0p->tk_commit_next = NULL;
set = rctl_set_create();
gp = rctl_set_init_prealloc(RCENTITY_TASK);
mutex_enter(&curproc->p_lock);
e.rcep_p.task = task0p;
e.rcep_t = RCENTITY_TASK;
task0p->tk_rctls = rctl_set_init(RCENTITY_TASK, curproc, &e, set, gp);
mutex_exit(&curproc->p_lock);
rctl_prealloc_destroy(gp);
(void) mod_hash_reserve(task_hash, &hndl);
mutex_enter(&task_hash_lock);
ASSERT(task_find(task0p->tk_tkid, GLOBAL_ZONEID) == NULL);
if (mod_hash_insert_reserve(task_hash,
(mod_hash_key_t)(uintptr_t)task0p->tk_tkid,
(mod_hash_val_t *)task0p, hndl) != 0) {
mod_hash_cancel(task_hash, &hndl);
panic("unable to insert task %d(%p)", task0p->tk_tkid,
(void *)task0p);
}
mutex_exit(&task_hash_lock);
task0p->tk_memb_list = p;
task0p->tk_nprocs_kstat = task_kstat_create(task0p, task0p->tk_zone);
/*
* Initialize task pointers for p0, including doubly linked list of task
* members.
*/
p->p_task = task0p;
p->p_taskprev = p->p_tasknext = p;
task_hold(task0p);
}
/*
* task_t *task_create(projid_t, zone *)
*
* Overview
* A process constructing a new task calls task_create() to construct and
* preinitialize the task for the appropriate destination project. Only one
* task, the primordial task0, is not created with task_create().
*
* Return values
* None.
*
* Caller's context
* Caller's context should be safe for KM_SLEEP allocations.
* The caller should appropriately bump the kpj_ntasks counter on the
* project that contains this task.
*/
task_t *
task_create(projid_t projid, zone_t *zone)
{
task_t *tk = kmem_cache_alloc(task_cache, KM_SLEEP);
task_t *ancestor_tk;
taskid_t tkid;
task_usage_t *tu = kmem_zalloc(sizeof (task_usage_t), KM_SLEEP);
mod_hash_hndl_t hndl;
rctl_set_t *set = rctl_set_create();
rctl_alloc_gp_t *gp;
rctl_entity_p_t e;
bzero(tk, sizeof (task_t));
tk->tk_tkid = tkid = id_alloc(taskid_space);
tk->tk_nlwps = 0;
tk->tk_nlwps_ctl = INT_MAX;
tk->tk_nprocs = 0;
tk->tk_nprocs_ctl = INT_MAX;
tk->tk_usage = tu;
tk->tk_inherited = kmem_zalloc(sizeof (task_usage_t), KM_SLEEP);
tk->tk_proj = project_hold_by_id(projid, zone, PROJECT_HOLD_INSERT);
tk->tk_flags = TASK_NORMAL;
tk->tk_commit_next = NULL;
/*
* Copy ancestor task's resource controls.
*/
zone_task_hold(zone);
mutex_enter(&curproc->p_lock);
ancestor_tk = curproc->p_task;
task_hold(ancestor_tk);
tk->tk_zone = zone;
mutex_exit(&curproc->p_lock);
for (;;) {
gp = rctl_set_dup_prealloc(ancestor_tk->tk_rctls);
mutex_enter(&ancestor_tk->tk_rctls->rcs_lock);
if (rctl_set_dup_ready(ancestor_tk->tk_rctls, gp))
break;
mutex_exit(&ancestor_tk->tk_rctls->rcs_lock);
rctl_prealloc_destroy(gp);
}
/*
* At this point, curproc does not have the appropriate linkage
* through the task to the project. So, rctl_set_dup should only
* copy the rctls, and leave the callbacks for later.
*/
e.rcep_p.task = tk;
e.rcep_t = RCENTITY_TASK;
tk->tk_rctls = rctl_set_dup(ancestor_tk->tk_rctls, curproc, curproc, &e,
set, gp, RCD_DUP);
mutex_exit(&ancestor_tk->tk_rctls->rcs_lock);
rctl_prealloc_destroy(gp);
/*
* Record the ancestor task's ID for use by extended accounting.
*/
tu->tu_anctaskid = ancestor_tk->tk_tkid;
task_rele(ancestor_tk);
/*
* Put new task structure in the hash table.
*/
(void) mod_hash_reserve(task_hash, &hndl);
mutex_enter(&task_hash_lock);
ASSERT(task_find(tkid, zone->zone_id) == NULL);
if (mod_hash_insert_reserve(task_hash, (mod_hash_key_t)(uintptr_t)tkid,
(mod_hash_val_t *)tk, hndl) != 0) {
mod_hash_cancel(task_hash, &hndl);
panic("unable to insert task %d(%p)", tkid, (void *)tk);
}
mutex_exit(&task_hash_lock);
tk->tk_nprocs_kstat = task_kstat_create(tk, zone);
return (tk);
}
