Subversion Repositories HelenOS-historic

Rev

Rev 1407 | Rev 1653 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
447 decky 1
/*
1065 jermar 2
 * Copyright (C) 2006 Jakub Jermar
447 decky 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
 
1065 jermar 29
#include <thread.h>
447 decky 30
#include <libc.h>
1079 jermar 31
#include <stdlib.h>
1065 jermar 32
#include <arch/faddr.h>
1079 jermar 33
#include <kernel/proc/uarg.h>
1113 palkovsky 34
#include <psthread.h>
1129 palkovsky 35
#include <string.h>
1392 palkovsky 36
#include <async.h>
447 decky 37
 
1113 palkovsky 38
#include <stdio.h>
1129 palkovsky 39
 
1167 vana 40
 
41
#ifndef THREAD_INITIAL_STACK_PAGES_NO
42
#define THREAD_INITIAL_STACK_PAGES_NO 1
43
#endif
44
 
1427 palkovsky 45
static LIST_INITIALIZE(thread_garbage);
1167 vana 46
 
1129 palkovsky 47
extern char _tdata_start;
48
extern char _tdata_end;
49
extern char _tbss_start;
50
extern char _tbss_end;
51
 
52
/** Create Thread Local storage area, return pointer to TCB(ThreadControlBlock)
53
 *
54
 * !! The code requires, that sections .tdata and .tbss are adjacent.
55
 *    It may be changed in the future.
56
 */
57
tcb_t * __make_tls(void)
1113 palkovsky 58
{
1129 palkovsky 59
    void *data;
60
    tcb_t *tcb;
61
    size_t tls_size = &_tbss_end - &_tdata_start;
62
 
63
    tcb = __alloc_tls(&data, tls_size);
64
 
65
    memcpy(data, &_tdata_start, &_tdata_end - &_tdata_start);
66
    memset(data + (&_tbss_start-&_tdata_start), &_tbss_end-&_tbss_start, 0);
1113 palkovsky 67
 
1129 palkovsky 68
    return tcb;
1113 palkovsky 69
}
70
 
1129 palkovsky 71
void __free_tls(tcb_t *tcb)
1113 palkovsky 72
{
1129 palkovsky 73
    size_t tls_size = &_tbss_end - &_tdata_start;
74
    __free_tls_arch(tcb, tls_size);
1113 palkovsky 75
}
76
 
1081 jermar 77
/** Main thread function.
78
 *
79
 * This function is called from __thread_entry() and is used
80
 * to call the thread's implementing function and perform cleanup
81
 * and exit when thread returns back. Do not call this function
82
 * directly.
83
 *
84
 * @param uarg Pointer to userspace argument structure.
1392 palkovsky 85
 *
86
 * TODO: Thread stack pages memory leak
1081 jermar 87
 */
1113 palkovsky 88
void __thread_main(uspace_arg_t *uarg)
1079 jermar 89
{
1392 palkovsky 90
    psthread_data_t *pt;
1113 palkovsky 91
 
1392 palkovsky 92
    pt = psthread_setup();
93
    __tcb_set(pt->tcb);
94
 
1079 jermar 95
    uarg->uspace_thread_function(uarg->uspace_thread_arg);
96
    free(uarg->uspace_stack);
97
    free(uarg);
1113 palkovsky 98
 
1407 palkovsky 99
    /* If there is a manager, destroy it */
1392 palkovsky 100
    async_destroy_manager();
101
    psthread_teardown(pt);
1113 palkovsky 102
 
1079 jermar 103
    thread_exit(0);
104
}
1065 jermar 105
 
1081 jermar 106
/** Create userspace thread.
107
 *
108
 * This function creates new userspace thread and allocates userspace
109
 * stack and userspace argument structure for it.
110
 *
111
 * @param function Function implementing the thread.
112
 * @param arg Argument to be passed to thread.
113
 * @param name Symbolic name of the thread.
114
 *
115
 * @param TID of the new thread on success or -1 on failure.
116
 */
1079 jermar 117
int thread_create(void (* function)(void *), void *arg, char *name)
1065 jermar 118
{
1079 jermar 119
    char *stack;
120
    uspace_arg_t *uarg;
121
 
1167 vana 122
    stack = (char *) malloc(getpagesize()*THREAD_INITIAL_STACK_PAGES_NO);
1079 jermar 123
    if (!stack)
124
        return -1;
125
 
126
    uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t));
127
    if (!uarg) {
128
        free(stack);
129
        return -1;
130
    }
1081 jermar 131
 
1079 jermar 132
    uarg->uspace_entry = (void *) FADDR(__thread_entry);
133
    uarg->uspace_stack = (void *) stack;
1081 jermar 134
    uarg->uspace_thread_function = function;
1079 jermar 135
    uarg->uspace_thread_arg = arg;
136
    uarg->uspace_uarg = uarg;
137
 
138
    return __SYSCALL2(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name);
713 decky 139
}
140
 
1081 jermar 141
/** Terminate current thread.
142
 *
143
 * @param stat Exit status. Currently not used.
144
 */
1065 jermar 145
void thread_exit(int status)
146
{
147
    __SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status);
447 decky 148
}
1427 palkovsky 149