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  1. /*
  2.  * Copyright (C) 2001-2004 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #ifndef __TASK_H__
  30. #define __TASK_H__
  31.  
  32. #include <typedefs.h>
  33. #include <synch/spinlock.h>
  34. #include <adt/list.h>
  35. #include <ipc/ipc.h>
  36.  
  37. /** Task structure. */
  38. struct task {
  39.     SPINLOCK_DECLARE(lock);
  40.     link_t th_head;     /**< List of threads contained in this task. */
  41.     link_t tasks_link;  /**< Link to other tasks within the system. */
  42.     as_t *as;       /**< Address space. */
  43.     task_id_t taskid;           /**< Unique identity of task */
  44.  
  45.     /* IPC stuff */
  46.     answerbox_t answerbox;  /**< Communication endpoint */
  47.     phone_t phones[IPC_MAX_PHONES];
  48.     atomic_t active_calls;  /**< Active asynchronous messages */
  49. };
  50.  
  51. extern spinlock_t tasks_lock;
  52. extern link_t tasks_head;
  53.  
  54. extern void task_init(void);
  55. extern task_t *task_create(as_t *as);
  56. extern task_t *task_run_program(void * program_addr);
  57.  
  58. #endif
  59.