WebSVN – HelenOS-historic – Diff – /uspace/trunk/libc/generic/thread.c


/*
 * Copyright (C) 2006 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 libc
 * @{
 */
/** @file
 */
 
#include <thread.h>
#include <libc.h>
#include <stdlib.h>
#include <libarch/faddr.h>
#include <kernel/proc/uarg.h>
#include <psthread.h>
#include <string.h>
#include <async.h>
 
#include <stdio.h>
 
 
#ifndef THREAD_INITIAL_STACK_PAGES_NO
#define THREAD_INITIAL_STACK_PAGES_NO 1
#endif
 
static LIST_INITIALIZE(thread_garbage);
 
extern char _tdata_start;
extern char _tdata_end;
extern char _tbss_start;
extern char _tbss_end;
 
/** Create Thread Local storage area, return pointer to TCB(ThreadControlBlock)
 *
 * !! The code requires, that sections .tdata and .tbss are adjacent.
 *    It may be changed in the future.
 */
tcb_t * __make_tls(void)
{
    void *data;
    tcb_t *tcb;
    size_t tls_size = &_tbss_end - &_tdata_start;
   
    tcb = __alloc_tls(&data, tls_size);
   
    memcpy(data, &_tdata_start, &_tdata_end - &_tdata_start);
    memset(data + (&_tbss_start-&_tdata_start), 0, &_tbss_end-&_tbss_start);
    return tcb;
}
 
void __free_tls(tcb_t *tcb)
{
    size_t tls_size = &_tbss_end - &_tdata_start;
    __free_tls_arch(tcb, tls_size);
}
 
/** Main thread function.
 *
 * This function is called from __thread_entry() and is used
 * to call the thread's implementing function and perform cleanup
 * and exit when thread returns back. Do not call this function
 * directly.
 *
 * @param uarg Pointer to userspace argument structure.
 *
 * TODO: Thread stack pages memory leak
 */
void __thread_main(uspace_arg_t *uarg)
{
    psthread_data_t *pt;
 
    pt = psthread_setup();
    __tcb_set(pt->tcb);
   
    uarg->uspace_thread_function(uarg->uspace_thread_arg);
    free(uarg->uspace_stack);
    free(uarg);
 
    /* If there is a manager, destroy it */
    async_destroy_manager();
    psthread_teardown(pt);
 
    thread_exit(0);
}
 
/** Create userspace thread.
 *
 * This function creates new userspace thread and allocates userspace
 * stack and userspace argument structure for it.
 *
 * @param function Function implementing the thread.
 * @param arg Argument to be passed to thread.
 * @param name Symbolic name of the thread.
 *
 * @return TID of the new thread on success or -1 on failure.
 */
int thread_create(void (* function)(void *), void *arg, char *name)
{
    char *stack;
    uspace_arg_t *uarg;
 
    stack = (char *) malloc(getpagesize()*THREAD_INITIAL_STACK_PAGES_NO);
    if (!stack)
        return -1;
       
    uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t));
    if (!uarg) {
        free(stack);
        return -1;
    }
   
    uarg->uspace_entry = (void *) FADDR(__thread_entry);
    uarg->uspace_stack = (void *) stack;
    uarg->uspace_thread_function = function;
    uarg->uspace_thread_arg = arg;
    uarg->uspace_uarg = uarg;
   
    return __SYSCALL2(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name);
}
 
/** Terminate current thread.
 *
 * @param status Exit status. Currently not used.
 */
void thread_exit(int status)
{
    __SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status);
}
 
 
 
/** @}
 */
 
 
 

Rev 1709	Rev 1781
1	/*	1	/*
2	* Copyright (C) 2006 Jakub Jermar	2	* Copyright (C) 2006 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 libc	29	/** @addtogroup libc
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <thread.h>	35	#include <thread.h>
36	#include <libc.h>	36	#include <libc.h>
37	#include <stdlib.h>	37	#include <stdlib.h>
38	#include <arch/faddr.h>	38	#include <libarch/faddr.h>
39	#include <kernel/proc/uarg.h>	39	#include <kernel/proc/uarg.h>
40	#include <psthread.h>	40	#include <psthread.h>
41	#include <string.h>	41	#include <string.h>
42	#include <async.h>	42	#include <async.h>
43		43
44	#include <stdio.h>	44	#include <stdio.h>
45		45
46		46
47	#ifndef THREAD_INITIAL_STACK_PAGES_NO	47	#ifndef THREAD_INITIAL_STACK_PAGES_NO
48	#define THREAD_INITIAL_STACK_PAGES_NO 1	48	#define THREAD_INITIAL_STACK_PAGES_NO 1
49	#endif	49	#endif
50		50
51	static LIST_INITIALIZE(thread_garbage);	51	static LIST_INITIALIZE(thread_garbage);
52		52
53	extern char _tdata_start;	53	extern char _tdata_start;
54	extern char _tdata_end;	54	extern char _tdata_end;
55	extern char _tbss_start;	55	extern char _tbss_start;
56	extern char _tbss_end;	56	extern char _tbss_end;
57		57
58	/** Create Thread Local storage area, return pointer to TCB(ThreadControlBlock)	58	/** Create Thread Local storage area, return pointer to TCB(ThreadControlBlock)
59	*	59	*
60	* !! The code requires, that sections .tdata and .tbss are adjacent.	60	* !! The code requires, that sections .tdata and .tbss are adjacent.
61	* It may be changed in the future.	61	* It may be changed in the future.
62	*/	62	*/
63	tcb_t * __make_tls(void)	63	tcb_t * __make_tls(void)
64	{	64	{
65	void *data;	65	void *data;
66	tcb_t *tcb;	66	tcb_t *tcb;
67	size_t tls_size = &_tbss_end - &_tdata_start;	67	size_t tls_size = &_tbss_end - &_tdata_start;
68		68
69	tcb = __alloc_tls(&data, tls_size);	69	tcb = __alloc_tls(&data, tls_size);
70		70
71	memcpy(data, &_tdata_start, &_tdata_end - &_tdata_start);	71	memcpy(data, &_tdata_start, &_tdata_end - &_tdata_start);
72	memset(data + (&_tbss_start-&_tdata_start), 0, &_tbss_end-&_tbss_start);	72	memset(data + (&_tbss_start-&_tdata_start), 0, &_tbss_end-&_tbss_start);
73	return tcb;	73	return tcb;
74	}	74	}
75		75
76	void __free_tls(tcb_t *tcb)	76	void __free_tls(tcb_t *tcb)
77	{	77	{
78	size_t tls_size = &_tbss_end - &_tdata_start;	78	size_t tls_size = &_tbss_end - &_tdata_start;
79	__free_tls_arch(tcb, tls_size);	79	__free_tls_arch(tcb, tls_size);
80	}	80	}
81		81
82	/** Main thread function.	82	/** Main thread function.
83	*	83	*
84	* This function is called from __thread_entry() and is used	84	* This function is called from __thread_entry() and is used
85	* to call the thread's implementing function and perform cleanup	85	* to call the thread's implementing function and perform cleanup
86	* and exit when thread returns back. Do not call this function	86	* and exit when thread returns back. Do not call this function
87	* directly.	87	* directly.
88	*	88	*
89	* @param uarg Pointer to userspace argument structure.	89	* @param uarg Pointer to userspace argument structure.
90	*	90	*
91	* TODO: Thread stack pages memory leak	91	* TODO: Thread stack pages memory leak
92	*/	92	*/
93	void __thread_main(uspace_arg_t *uarg)	93	void __thread_main(uspace_arg_t *uarg)
94	{	94	{
95	psthread_data_t *pt;	95	psthread_data_t *pt;
96		96
97	pt = psthread_setup();	97	pt = psthread_setup();
98	__tcb_set(pt->tcb);	98	__tcb_set(pt->tcb);
99		99
100	uarg->uspace_thread_function(uarg->uspace_thread_arg);	100	uarg->uspace_thread_function(uarg->uspace_thread_arg);
101	free(uarg->uspace_stack);	101	free(uarg->uspace_stack);
102	free(uarg);	102	free(uarg);
103		103
104	/* If there is a manager, destroy it */	104	/* If there is a manager, destroy it */
105	async_destroy_manager();	105	async_destroy_manager();
106	psthread_teardown(pt);	106	psthread_teardown(pt);
107		107
108	thread_exit(0);	108	thread_exit(0);
109	}	109	}
110		110
111	/** Create userspace thread.	111	/** Create userspace thread.
112	*	112	*
113	* This function creates new userspace thread and allocates userspace	113	* This function creates new userspace thread and allocates userspace
114	* stack and userspace argument structure for it.	114	* stack and userspace argument structure for it.
115	*	115	*
116	* @param function Function implementing the thread.	116	* @param function Function implementing the thread.
117	* @param arg Argument to be passed to thread.	117	* @param arg Argument to be passed to thread.
118	* @param name Symbolic name of the thread.	118	* @param name Symbolic name of the thread.
119	*	119	*
120	* @return TID of the new thread on success or -1 on failure.	120	* @return TID of the new thread on success or -1 on failure.
121	*/	121	*/
122	int thread_create(void (* function)(void ), void arg, char *name)	122	int thread_create(void (* function)(void ), void arg, char *name)
123	{	123	{
124	char *stack;	124	char *stack;
125	uspace_arg_t *uarg;	125	uspace_arg_t *uarg;
126		126
127	stack = (char ) malloc(getpagesize()THREAD_INITIAL_STACK_PAGES_NO);	127	stack = (char ) malloc(getpagesize()THREAD_INITIAL_STACK_PAGES_NO);
128	if (!stack)	128	if (!stack)
129	return -1;	129	return -1;
130		130
131	uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t));	131	uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t));
132	if (!uarg) {	132	if (!uarg) {
133	free(stack);	133	free(stack);
134	return -1;	134	return -1;
135	}	135	}
136		136
137	uarg->uspace_entry = (void *) FADDR(__thread_entry);	137	uarg->uspace_entry = (void *) FADDR(__thread_entry);
138	uarg->uspace_stack = (void *) stack;	138	uarg->uspace_stack = (void *) stack;
139	uarg->uspace_thread_function = function;	139	uarg->uspace_thread_function = function;
140	uarg->uspace_thread_arg = arg;	140	uarg->uspace_thread_arg = arg;
141	uarg->uspace_uarg = uarg;	141	uarg->uspace_uarg = uarg;
142		142
143	return __SYSCALL2(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name);	143	return __SYSCALL2(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name);
144	}	144	}
145		145
146	/** Terminate current thread.	146	/** Terminate current thread.
147	*	147	*
148	* @param status Exit status. Currently not used.	148	* @param status Exit status. Currently not used.
149	*/	149	*/
150	void thread_exit(int status)	150	void thread_exit(int status)
151	{	151	{
152	__SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status);	152	__SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status);
153	}	153	}
154		154
155		-
156		-
157	/** @}	155	/** @}
158	*/	156	*/
159		157
160		158
161		159

Subversion Repositories HelenOS-historic

(root)/uspace/trunk/libc/generic/thread.c – Rev 1709 → 1781