0,0 → 1,144 |
/* |
* 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 |
*/ |
|
#ifndef KERN_TASK_H_ |
#define KERN_TASK_H_ |
|
#include <cpu.h> |
#include <ipc/ipc.h> |
#include <synch/spinlock.h> |
#include <synch/mutex.h> |
#include <synch/rwlock.h> |
#include <synch/futex.h> |
#include <adt/avl.h> |
#include <adt/btree.h> |
#include <adt/list.h> |
#include <security/cap.h> |
#include <arch/proc/task.h> |
#include <arch/proc/thread.h> |
#include <arch/context.h> |
#include <arch/fpu_context.h> |
#include <arch/cpu.h> |
#include <mm/tlb.h> |
#include <proc/scheduler.h> |
#include <tdebug/tdebug_type.h> |
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struct thread; |
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/** Task structure. */ |
typedef struct task { |
/** Task's linkage for the tasks_tree AVL tree. */ |
avltree_node_t tasks_tree_node; |
|
/** Task lock. |
* |
* Must be acquired before threads_lock and thread lock of any of its |
* threads. |
*/ |
SPINLOCK_DECLARE(lock); |
|
char *name; |
/** List of threads contained in this task. */ |
link_t th_head; |
/** Address space. */ |
as_t *as; |
/** Unique identity of task. */ |
task_id_t taskid; |
/** Task security context. */ |
context_id_t context; |
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/** Number of references (i.e. threads). */ |
atomic_t refcount; |
/** Number of threads that haven't exited yet. */ |
atomic_t lifecount; |
|
/** Task capabilities. */ |
cap_t capabilities; |
|
/* IPC stuff */ |
answerbox_t answerbox; /**< Communication endpoint */ |
phone_t phones[IPC_MAX_PHONES]; |
/** |
* Active asynchronous messages. It is used for limiting uspace to |
* certain extent. |
*/ |
atomic_t active_calls; |
|
/** Architecture specific task data. */ |
task_arch_t arch; |
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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; |
/** B+tree of futexes referenced by this task. */ |
btree_t futexes; |
|
/** Accumulated accounting. */ |
uint64_t cycles; |
|
/** Task debugging stuff */ |
task_tdebug_t tdebug; |
} task_t; |
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SPINLOCK_EXTERN(tasks_lock); |
extern avltree_t tasks_tree; |
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extern void task_init(void); |
extern void task_done(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); |
extern uint64_t task_get_accounting(task_t *t); |
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extern void cap_set(task_t *t, cap_t caps); |
extern cap_t cap_get(task_t *t); |
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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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/** @} |
*/ |