task.h

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00001 /*
00002  * Copyright (C) 2001-2004 Jakub Jermar
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  *
00009  * - Redistributions of source code must retain the above copyright
00010  *   notice, this list of conditions and the following disclaimer.
00011  * - Redistributions in binary form must reproduce the above copyright
00012  *   notice, this list of conditions and the following disclaimer in the
00013  *   documentation and/or other materials provided with the distribution.
00014  * - The name of the author may not be used to endorse or promote products
00015  *   derived from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
00018  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00019  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
00020  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
00021  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
00022  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00023  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00024  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00025  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
00026  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00027  */
00028 
00035 #ifndef __TASK_H__
00036 #define __TASK_H__
00037 
00038 #include <typedefs.h>
00039 #include <synch/spinlock.h>
00040 #include <synch/mutex.h>
00041 #include <synch/futex.h>
00042 #include <adt/btree.h>
00043 #include <adt/list.h>
00044 #include <ipc/ipc.h>
00045 #include <security/cap.h>
00046 #include <arch/proc/task.h>
00047 
00049 struct task {
00054         SPINLOCK_DECLARE(lock);
00055         
00056         char *name;
00057         thread_t *main_thread;  
00058         link_t th_head;         
00059         as_t *as;               
00060         task_id_t taskid;       
00063         bool accept_new_threads;
00064 
00065         count_t refcount;       
00067         cap_t capabilities;     
00069         /* IPC stuff */
00070         answerbox_t answerbox;  
00071         phone_t phones[IPC_MAX_PHONES];
00072         atomic_t active_calls;  
00076         task_arch_t arch;       
00082         mutex_t futexes_lock;
00083         btree_t futexes;        
00084 };
00085 
00086 extern spinlock_t tasks_lock;
00087 extern btree_t tasks_btree;
00088 
00089 extern void task_init(void);
00090 extern task_t *task_create(as_t *as, char *name);
00091 extern void task_destroy(task_t *t);
00092 extern task_t *task_run_program(void *program_addr, char *name);
00093 extern task_t *task_find_by_id(task_id_t id);
00094 extern int task_kill(task_id_t id);
00095 
00096 
00097 #ifndef task_create_arch
00098 extern void task_create_arch(task_t *t);
00099 #endif
00100 
00101 #ifndef task_destroy_arch
00102 extern void task_destroy_arch(task_t *t);
00103 #endif
00104 
00105 extern __native sys_task_get_id(task_id_t *uspace_task_id);
00106 
00107 #endif
00108 

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