WebSVN – HelenOS – Diff – /branches/sparc/kernel/generic/src/main/uinit.c


/*
 * Copyright (c) 2005 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.
 */
 
/** @addtogroup main
 * @{
 */
 
/**
 * @file
 * @brief   Userspace bootstrap thread.
 *
 * This file contains uinit kernel thread wich is used to start every
 * userspace thread including threads created by SYS_THREAD_CREATE syscall.
 *
 * @see SYS_THREAD_CREATE
 */
 
#include <main/uinit.h>
#include <arch/asm.h>
#include <arch/types.h>
#include <proc/thread.h>
#include <userspace.h>
#include <mm/slab.h>
#include <arch.h>
#include <udebug/udebug.h>
 
 
/** Thread used to bring up userspace thread.
 *
 * @param arg Pointer to structure containing userspace entry and stack
 *     addresses.
 */
void uinit(void *arg)
{
    uspace_arg_t uarg;
 
    /*
     * So far, we don't have a use for joining userspace threads so we
     * immediately detach each uinit thread. If joining of userspace threads
     * is required, some userspace API based on the kernel mechanism will
     * have to be implemented. Moreover, garbage collecting of threads that
     * didn't detach themselves and nobody else joined them will have to be
     * deployed for the event of forceful task termination.
     */
    thread_detach(THREAD);
 
#ifdef CONFIG_UDEBUG
    udebug_stoppable_end();
#endif
   
    uarg.uspace_entry = ((uspace_arg_t *) arg)->uspace_entry;
    uarg.uspace_stack = ((uspace_arg_t *) arg)->uspace_stack;
    uarg.uspace_uarg = ((uspace_arg_t *) arg)->uspace_uarg;
    uarg.uspace_thread_function = NULL;
    uarg.uspace_thread_arg = NULL;
 
    free((uspace_arg_t *) arg);
    userspace(&uarg);
}
 
/** @}
 */
 

Subversion Repositories HelenOS

(root)/branches/sparc/kernel/generic/src/main/uinit.c – Rev 3492 → 3862

Rev 3492		Rev 3862
1	/*	1	/*
2	* Copyright (c) 2005 Jakub Jermar	2	* Copyright (c) 2005 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup main	29	/** @addtogroup main
30	* @{	30	* @{
31	*/	31	*/
32		32
33	/**	33	/**
34	* @file	34	* @file
35	* @brief Userspace bootstrap thread.	35	* @brief Userspace bootstrap thread.
36	*	36	*
37	* This file contains uinit kernel thread wich is used to start every	37	* This file contains uinit kernel thread wich is used to start every
38	* userspace thread including threads created by SYS_THREAD_CREATE syscall.	38	* userspace thread including threads created by SYS_THREAD_CREATE syscall.
39	*	39	*
40	* @see SYS_THREAD_CREATE	40	* @see SYS_THREAD_CREATE
41	*/	41	*/
42		42
43	#include <main/uinit.h>	43	#include <main/uinit.h>
-		44	#include <arch/asm.h>
44	#include <arch/types.h>	45	#include <arch/types.h>
45	#include <proc/thread.h>	46	#include <proc/thread.h>
46	#include <userspace.h>	47	#include <userspace.h>
47	#include <mm/slab.h>	48	#include <mm/slab.h>
48	#include <arch.h>	49	#include <arch.h>
49	#include <udebug/udebug.h>	50	#include <udebug/udebug.h>
50		51
51		52
52	/** Thread used to bring up userspace thread.	53	/** Thread used to bring up userspace thread.
53	*	54	*
54	* @param arg Pointer to structure containing userspace entry and stack	55	* @param arg Pointer to structure containing userspace entry and stack
55	* addresses.	56	* addresses.
56	*/	57	*/
57	void uinit(void *arg)	58	void uinit(void *arg)
58	{	59	{
59	uspace_arg_t uarg;	60	uspace_arg_t uarg;
60		61
61	/*	62	/*
62	* So far, we don't have a use for joining userspace threads so we	63	* So far, we don't have a use for joining userspace threads so we
63	* immediately detach each uinit thread. If joining of userspace threads	64	* immediately detach each uinit thread. If joining of userspace threads
64	* is required, some userspace API based on the kernel mechanism will	65	* is required, some userspace API based on the kernel mechanism will
65	* have to be implemented. Moreover, garbage collecting of threads that	66	* have to be implemented. Moreover, garbage collecting of threads that
66	* didn't detach themselves and nobody else joined them will have to be	67	* didn't detach themselves and nobody else joined them will have to be
67	* deployed for the event of forceful task termination.	68	* deployed for the event of forceful task termination.
68	*/	69	*/
69	thread_detach(THREAD);	70	thread_detach(THREAD);
70		71
71	#ifdef CONFIG_UDEBUG	72	#ifdef CONFIG_UDEBUG
72	udebug_stoppable_end();	73	udebug_stoppable_end();
73	#endif	74	#endif
74		75
75	uarg.uspace_entry = ((uspace_arg_t *) arg)->uspace_entry;	76	uarg.uspace_entry = ((uspace_arg_t *) arg)->uspace_entry;
76	uarg.uspace_stack = ((uspace_arg_t *) arg)->uspace_stack;	77	uarg.uspace_stack = ((uspace_arg_t *) arg)->uspace_stack;
77	uarg.uspace_uarg = ((uspace_arg_t *) arg)->uspace_uarg;	78	uarg.uspace_uarg = ((uspace_arg_t *) arg)->uspace_uarg;
78	uarg.uspace_thread_function = NULL;	79	uarg.uspace_thread_function = NULL;
79	uarg.uspace_thread_arg = NULL;	80	uarg.uspace_thread_arg = NULL;
80		81
81	free((uspace_arg_t *) arg);	82	free((uspace_arg_t *) arg);
82	userspace(&uarg);	83	userspace(&uarg);
83	}	84	}
84		85
85	/** @}	86	/** @}
86	*/	87	*/
87		88