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Ignore whitespace Rev 4152 → Rev 4153

/branches/network/kernel/generic/src/proc/scheduler.c
451,7 → 451,7
/*
* Entering state is unexpected.
*/
panic("tid%" PRIu64 ": unexpected state %s\n",
panic("tid%" PRIu64 ": unexpected state %s.",
THREAD->tid, thread_states[THREAD->state]);
break;
}
/branches/network/kernel/generic/src/proc/task.c
52,6 → 52,7
#include <print.h>
#include <errno.h>
#include <func.h>
#include <string.h>
#include <syscall/copy.h>
 
/** Spinlock protecting the tasks_tree AVL tree. */
130,7 → 131,7
/** Create new task with no threads.
*
* @param as Task's address space.
* @param name Symbolic name.
* @param name Symbolic name (a copy is made).
*
* @return New task's structure.
*
148,7 → 149,10
spinlock_initialize(&ta->lock, "task_ta_lock");
list_initialize(&ta->th_head);
ta->as = as;
ta->name = name;
 
memcpy(ta->name, name, TASK_NAME_BUFLEN);
ta->name[TASK_NAME_BUFLEN - 1] = '\0';
 
atomic_set(&ta->refcount, 0);
atomic_set(&ta->lifecount, 0);
ta->context = CONTEXT;
155,7 → 159,18
 
ta->capabilities = 0;
ta->cycles = 0;
 
#ifdef CONFIG_UDEBUG
/* Init debugging stuff */
udebug_task_init(&ta->udebug);
 
/* Init kbox stuff */
ipc_answerbox_init(&ta->kb.box, ta);
ta->kb.thread = NULL;
mutex_initialize(&ta->kb.cleanup_lock, MUTEX_PASSIVE);
ta->kb.finished = false;
#endif
 
ipc_answerbox_init(&ta->answerbox, ta);
for (i = 0; i < IPC_MAX_PHONES; i++)
ipc_phone_init(&ta->phones[i]);
235,6 → 250,35
sizeof(TASK->taskid));
}
 
/** Syscall for setting the task name.
*
* The name simplifies identifying the task in the task list.
*
* @param name The new name for the task. (typically the same
* as the command used to execute it).
*
* @return 0 on success or an error code from @ref errno.h.
*/
unative_t sys_task_set_name(const char *uspace_name, size_t name_len)
{
int rc;
char namebuf[TASK_NAME_BUFLEN];
 
/* Cap length of name and copy it from userspace. */
 
if (name_len > TASK_NAME_BUFLEN - 1)
name_len = TASK_NAME_BUFLEN - 1;
 
rc = copy_from_uspace(namebuf, uspace_name, name_len);
if (rc != 0)
return (unative_t) rc;
 
namebuf[name_len] = '\0';
strncpy(TASK->name, namebuf, TASK_NAME_BUFLEN);
 
return EOK;
}
 
/** Find task structure corresponding to task ID.
*
* The tasks_lock must be already held by the caller of this function and
325,7 → 369,7
bool sleeping = false;
thr = list_get_instance(cur, thread_t, th_link);
spinlock_lock(&thr->lock);
thr->interrupted = true;
if (thr->state == Sleeping)
353,13 → 397,13
order(task_get_accounting(t), &cycles, &suffix);
 
#ifdef __32_BITS__
printf("%-6" PRIu64 " %-10s %-3" PRIu32 " %10p %10p %9" PRIu64
printf("%-6" PRIu64 " %-12s %-3" PRIu32 " %10p %10p %9" PRIu64
"%c %7ld %6ld", t->taskid, t->name, t->context, t, t->as, cycles,
suffix, atomic_get(&t->refcount), atomic_get(&t->active_calls));
#endif
 
#ifdef __64_BITS__
printf("%-6" PRIu64 " %-10s %-3" PRIu32 " %18p %18p %9" PRIu64
printf("%-6" PRIu64 " %-12s %-3" PRIu32 " %18p %18p %9" PRIu64
"%c %7ld %6ld", t->taskid, t->name, t->context, t, t->as, cycles,
suffix, atomic_get(&t->refcount), atomic_get(&t->active_calls));
#endif
384,16 → 428,16
spinlock_lock(&tasks_lock);
 
#ifdef __32_BITS__
printf("taskid name ctx address as "
printf("taskid name ctx address as "
"cycles threads calls callee\n");
printf("------ ---------- --- ---------- ---------- "
printf("------ ------------ --- ---------- ---------- "
"---------- ------- ------ ------>\n");
#endif
 
#ifdef __64_BITS__
printf("taskid name ctx address as "
printf("taskid name ctx address as "
"cycles threads calls callee\n");
printf("------ ---------- --- ------------------ ------------------ "
printf("------ ------------ --- ------------------ ------------------ "
"---------- ------- ------ ------>\n");
#endif
 
/branches/network/kernel/generic/src/proc/program.c
67,9 → 67,10
*
* @param as Address space containing a binary program image.
* @param entry_addr Program entry-point address in program address space.
* @param name Name to set for the program's task.
* @param p Buffer for storing program information.
*/
void program_create(as_t *as, uintptr_t entry_addr, program_t *p)
void program_create(as_t *as, uintptr_t entry_addr, char *name, program_t *p)
{
as_area_t *a;
uspace_arg_t *kernel_uarg;
81,7 → 82,7
kernel_uarg->uspace_thread_arg = NULL;
kernel_uarg->uspace_uarg = NULL;
p->task = task_create(as, "app");
p->task = task_create(as, name);
ASSERT(p->task);
 
/*
106,6 → 107,7
* executable image. The task is returned in *task.
*
* @param image_addr Address of an executable program image.
* @param name Name to set for the program's task.
* @param p Buffer for storing program info. If image_addr
* points to a loader image, p->task will be set to
* NULL and EOK will be returned.
112,7 → 114,7
*
* @return EOK on success or negative error code.
*/
int program_create_from_image(void *image_addr, program_t *p)
int program_create_from_image(void *image_addr, char *name, program_t *p)
{
as_t *as;
unsigned int rc;
136,7 → 138,7
return EOK;
}
 
program_create(as, ((elf_header_t *) image_addr)->e_entry, p);
program_create(as, ((elf_header_t *) image_addr)->e_entry, name, p);
 
return EOK;
}
143,10 → 145,12
 
/** Create a task from the program loader image.
*
* @param p Buffer for storing program info.
* @param p Buffer for storing program info.
* @param name Name to set for the program's task.
*
* @return EOK on success or negative error code.
*/
int program_create_loader(program_t *p)
int program_create_loader(program_t *p, char *name)
{
as_t *as;
unsigned int rc;
167,7 → 171,8
return ENOENT;
}
 
program_create(as, ((elf_header_t *) program_loader)->e_entry, p);
program_create(as, ((elf_header_t *) program_loader)->e_entry,
name, p);
 
return EOK;
}
185,48 → 190,37
 
/** Syscall for creating a new loader instance from userspace.
*
* Creates a new task from the program loader image, connects a phone
* to it and stores the phone id into the provided buffer.
* Creates a new task from the program loader image and sets
* the task name.
*
* @param uspace_phone_id Userspace address where to store the phone id.
* @param name Name to set on the new task (typically the same
* as the command used to execute it).
*
* @return 0 on success or an error code from @ref errno.h.
*/
unative_t sys_program_spawn_loader(int *uspace_phone_id)
unative_t sys_program_spawn_loader(char *uspace_name, size_t name_len)
{
program_t p;
int fake_id;
int rc;
int phone_id;
char namebuf[TASK_NAME_BUFLEN];
 
fake_id = 0;
/* Cap length of name and copy it from userspace. */
 
/* Before we even try creating the task, see if we can write the id */
rc = (unative_t) copy_to_uspace(uspace_phone_id, &fake_id,
sizeof(fake_id));
if (name_len > TASK_NAME_BUFLEN - 1)
name_len = TASK_NAME_BUFLEN - 1;
 
rc = copy_from_uspace(namebuf, uspace_name, name_len);
if (rc != 0)
return rc;
return (unative_t) rc;
 
phone_id = phone_alloc();
if (phone_id < 0)
return ELIMIT;
namebuf[name_len] = '\0';
 
rc = program_create_loader(&p);
/* Spawn the new task. */
 
rc = program_create_loader(&p, namebuf);
if (rc != 0)
return rc;
 
phone_connect(phone_id, &p.task->answerbox);
 
/* No need to aquire lock before task_ready() */
rc = (unative_t) copy_to_uspace(uspace_phone_id, &phone_id,
sizeof(phone_id));
if (rc != 0) {
/* Ooops */
ipc_phone_hangup(&TASK->phones[phone_id]);
task_kill(p.task->taskid);
return rc;
}
 
// FIXME: control the capabilities
cap_set(p.task, cap_get(TASK));
 
/branches/network/kernel/generic/src/proc/tasklet.c
51,7 → 51,7
tasklet_list = malloc(sizeof(tasklet_descriptor_t *) * config.cpu_count, 0);
if (!tasklet_list)
panic("Error initializing tasklets");
panic("Error initializing tasklets.");
for (i = 0; i < config.cpu_count; i++)
tasklet_list[i] = NULL;
/branches/network/kernel/generic/src/proc/thread.c
102,7 → 102,7
thread_id_t last_tid = 0;
 
static slab_cache_t *thread_slab;
#ifdef ARCH_HAS_FPU
#ifdef CONFIG_FPU
slab_cache_t *fpu_context_slab;
#endif
 
161,7 → 161,7
/* call the architecture-specific part of the constructor */
thr_constructor_arch(t);
#ifdef ARCH_HAS_FPU
#ifdef CONFIG_FPU
#ifdef CONFIG_FPU_LAZY
t->saved_fpu_context = NULL;
#else
169,11 → 169,11
if (!t->saved_fpu_context)
return -1;
#endif
#endif
#endif
 
t->kstack = (uint8_t *) frame_alloc(STACK_FRAMES, FRAME_KA | kmflags);
if (!t->kstack) {
#ifdef ARCH_HAS_FPU
#ifdef CONFIG_FPU
if (t->saved_fpu_context)
slab_free(fpu_context_slab, t->saved_fpu_context);
#endif
180,6 → 180,10
return -1;
}
 
#ifdef CONFIG_UDEBUG
mutex_initialize(&t->udebug.lock, MUTEX_PASSIVE);
#endif
 
return 0;
}
 
192,7 → 196,7
thr_destructor_arch(t);
 
frame_free(KA2PA(t->kstack));
#ifdef ARCH_HAS_FPU
#ifdef CONFIG_FPU
if (t->saved_fpu_context)
slab_free(fpu_context_slab, t->saved_fpu_context);
#endif
207,11 → 211,11
void thread_init(void)
{
THREAD = NULL;
atomic_set(&nrdy,0);
atomic_set(&nrdy, 0);
thread_slab = slab_cache_create("thread_slab", sizeof(thread_t), 0,
thr_constructor, thr_destructor, 0);
 
#ifdef ARCH_HAS_FPU
#ifdef CONFIG_FPU
fpu_context_slab = slab_cache_create("fpu_slab", sizeof(fpu_context_t),
FPU_CONTEXT_ALIGN, NULL, NULL, 0);
#endif
275,7 → 279,7
* guarantee that the task won't cease to exist during the
* call. The task's lock may not be held.
* @param flags Thread flags.
* @param name Symbolic name.
* @param name Symbolic name (a copy is made).
* @param uncounted Thread's accounting doesn't affect accumulated task
* accounting.
*
312,6 → 316,7
interrupts_restore(ipl);
memcpy(t->name, name, THREAD_NAME_BUFLEN);
t->name[THREAD_NAME_BUFLEN - 1] = '\0';
t->thread_code = func;
t->thread_arg = arg;
347,6 → 352,11
avltree_node_initialize(&t->threads_tree_node);
t->threads_tree_node.key = (uintptr_t) t;
 
#ifdef CONFIG_UDEBUG
/* Init debugging stuff */
udebug_thread_initialize(&t->udebug);
#endif
 
/* might depend on previous initialization */
thread_create_arch(t);
 
409,12 → 419,17
ipl_t ipl;
 
/*
* Attach to the current task.
* Attach to the specified task.
*/
ipl = interrupts_disable();
spinlock_lock(&task->lock);
 
atomic_inc(&task->refcount);
atomic_inc(&task->lifecount);
 
/* Must not count kbox thread into lifecount */
if (t->flags & THREAD_FLAG_USPACE)
atomic_inc(&task->lifecount);
 
list_append(&t->th_link, &task->th_head);
spinlock_unlock(&task->lock);
 
437,14 → 452,19
{
ipl_t ipl;
 
if (atomic_predec(&TASK->lifecount) == 0) {
/*
* We are the last thread in the task that still has not exited.
* With the exception of the moment the task was created, new
* threads can only be created by threads of the same task.
* We are safe to perform cleanup.
*/
if (THREAD->flags & THREAD_FLAG_USPACE) {
if (THREAD->flags & THREAD_FLAG_USPACE) {
#ifdef CONFIG_UDEBUG
/* Generate udebug THREAD_E event */
udebug_thread_e_event();
#endif
if (atomic_predec(&TASK->lifecount) == 0) {
/*
* We are the last userspace thread in the task that
* still has not exited. With the exception of the
* moment the task was created, new userspace threads
* can only be created by threads of the same task.
* We are safe to perform cleanup.
*/
ipc_cleanup();
futex_cleanup();
LOG("Cleanup of task %" PRIu64" completed.", TASK->taskid);
689,7 → 709,7
*
*/
unative_t sys_thread_create(uspace_arg_t *uspace_uarg, char *uspace_name,
thread_id_t *uspace_thread_id)
size_t name_len, thread_id_t *uspace_thread_id)
{
thread_t *t;
char namebuf[THREAD_NAME_BUFLEN];
696,10 → 716,15
uspace_arg_t *kernel_uarg;
int rc;
 
rc = copy_from_uspace(namebuf, uspace_name, THREAD_NAME_BUFLEN);
if (name_len > THREAD_NAME_BUFLEN - 1)
name_len = THREAD_NAME_BUFLEN - 1;
 
rc = copy_from_uspace(namebuf, uspace_name, name_len);
if (rc != 0)
return (unative_t) rc;
 
namebuf[name_len] = '\0';
 
/*
* In case of failure, kernel_uarg will be deallocated in this function.
* In case of success, kernel_uarg will be freed in uinit().
738,7 → 763,18
return (unative_t) rc;
}
}
#ifdef CONFIG_UDEBUG
/*
* Generate udebug THREAD_B event and attach the thread.
* This must be done atomically (with the debug locks held),
* otherwise we would either miss some thread or receive
* THREAD_B events for threads that already existed
* and could be detected with THREAD_READ before.
*/
udebug_thread_b_event_attach(t, TASK);
#else
thread_attach(t, TASK);
#endif
thread_ready(t);
 
return 0;