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* Copyright (c) 2001-2004 Jakub Jermar
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* - The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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/** @addtogroup genericproc
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#include <synch/spinlock.h>
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#include <synch/mutex.h>
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#include <synch/rwlock.h>
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#include <synch/futex.h>
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#include <adt/btree.h>
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#include <security/cap.h>
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#include <arch/proc/task.h>
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#include <arch/proc/thread.h>
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#include <arch/context.h>
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#include <arch/fpu_context.h>
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#include <proc/scheduler.h>
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#include <udebug/udebug.h>
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#define TASK_NAME_BUFLEN 20
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/** Task structure. */
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/** Task's linkage for the tasks_tree AVL tree. */
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avltree_node_t tasks_tree_node;
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* Must be acquired before threads_lock and thread lock of any of its
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SPINLOCK_DECLARE(lock);
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char name[TASK_NAME_BUFLEN];
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/** List of threads contained in this task. */
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/** Unique identity of task. */
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/** Task security context. */
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/** Number of references (i.e. threads). */
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/** Number of threads that haven't exited yet. */
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/** Task capabilities. */
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answerbox_t answerbox; /**< Communication endpoint */
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phone_t phones[IPC_MAX_PHONES];
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* Active asynchronous messages. It is used for limiting uspace to
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atomic_t active_calls;
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/** Debugging stuff. */
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udebug_task_t udebug;
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/** Kernel answerbox. */
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/** Architecture specific task data. */
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* Serializes access to the B+tree of task's futexes. This mutex is
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* independent on the task spinlock.
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mutex_t futexes_lock;
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/** B+tree of futexes referenced by this task. */
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/** Accumulated accounting. */
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SPINLOCK_EXTERN(tasks_lock);
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extern avltree_t tasks_tree;
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extern void task_init(void);
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extern void task_done(void);
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extern task_t *task_create(as_t *as, char *name);
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extern void task_destroy(task_t *t);
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extern task_t *task_find_by_id(task_id_t id);
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extern int task_kill(task_id_t id);
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extern uint64_t task_get_accounting(task_t *t);
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extern void cap_set(task_t *t, cap_t caps);
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extern cap_t cap_get(task_t *t);
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#ifndef task_create_arch
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extern void task_create_arch(task_t *t);
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#ifndef task_destroy_arch
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extern void task_destroy_arch(task_t *t);
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extern unative_t sys_task_get_id(task_id_t *uspace_task_id);
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extern unative_t sys_task_set_name(const char *uspace_name, size_t name_len);