0,0 → 1,111 |
/* |
* Copyright (C) 2001-2004 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
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/** @addtogroup genericproc |
* @{ |
*/ |
/** @file |
*/ |
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#ifndef __TASK_H__ |
#define __TASK_H__ |
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#include <typedefs.h> |
#include <synch/spinlock.h> |
#include <synch/mutex.h> |
#include <synch/futex.h> |
#include <adt/btree.h> |
#include <adt/list.h> |
#include <ipc/ipc.h> |
#include <security/cap.h> |
#include <arch/proc/task.h> |
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/** Task structure. */ |
struct task { |
/** Task lock. |
* |
* Must be acquired before threads_lock and thread lock of any of its threads. |
*/ |
SPINLOCK_DECLARE(lock); |
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char *name; |
thread_t *main_thread; /**< Pointer to the main thread. */ |
link_t th_head; /**< List of threads contained in this task. */ |
as_t *as; /**< Address space. */ |
task_id_t taskid; /**< Unique identity of task */ |
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/** If this is true, new threads can become part of the task. */ |
bool accept_new_threads; |
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count_t refcount; /**< Number of references (i.e. threads). */ |
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cap_t capabilities; /**< Task capabilities. */ |
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/* IPC stuff */ |
answerbox_t answerbox; /**< Communication endpoint */ |
phone_t phones[IPC_MAX_PHONES]; |
atomic_t active_calls; /**< Active asynchronous messages. |
* It is used for limiting uspace to |
* certain extent. */ |
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task_arch_t arch; /**< Architecture specific task data. */ |
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/** |
* Serializes access to the B+tree of task's futexes. This mutex is |
* independent on the task spinlock. |
*/ |
mutex_t futexes_lock; |
btree_t futexes; /**< B+tree of futexes referenced by this task. */ |
}; |
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extern spinlock_t tasks_lock; |
extern btree_t tasks_btree; |
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extern void task_init(void); |
extern task_t *task_create(as_t *as, char *name); |
extern void task_destroy(task_t *t); |
extern task_t *task_run_program(void *program_addr, char *name); |
extern task_t *task_find_by_id(task_id_t id); |
extern int task_kill(task_id_t id); |
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#ifndef task_create_arch |
extern void task_create_arch(task_t *t); |
#endif |
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#ifndef task_destroy_arch |
extern void task_destroy_arch(task_t *t); |
#endif |
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extern unative_t sys_task_get_id(task_id_t *uspace_task_id); |
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#endif |
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/** @} |
*/ |
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