Subversion Repositories HelenOS-historic

Rev

Rev 1167 | Rev 1407 | 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 
 
45 
 
1129 palkovsky 46 
extern char _tdata_start;
47 
extern char _tdata_end;
48 
extern char _tbss_start;
49 
extern char _tbss_end;
50 
 
51 
/** Create Thread Local storage area, return pointer to TCB(ThreadControlBlock)
52 
 *
53 
 * !! The code requires, that sections .tdata and .tbss are adjacent.
54 
 *    It may be changed in the future.
55 
 */
56 
tcb_t * __make_tls(void)
1113 palkovsky 57 
{
1129 palkovsky 58 
    void *data;
59 
    tcb_t *tcb;
60 
    size_t tls_size = &_tbss_end - &_tdata_start;
61 
 
62 
    tcb = __alloc_tls(&data, tls_size);
63 
 
64 
    memcpy(data, &_tdata_start, &_tdata_end - &_tdata_start);
65 
    memset(data + (&_tbss_start-&_tdata_start), &_tbss_end-&_tbss_start, 0);
1113 palkovsky 66 
 
1129 palkovsky 67 
    return tcb;
1113 palkovsky 68 
}
69 
 
1129 palkovsky 70 
void __free_tls(tcb_t *tcb)
1113 palkovsky 71 
{
1129 palkovsky 72 
    size_t tls_size = &_tbss_end - &_tdata_start;
73 
    __free_tls_arch(tcb, tls_size);
1113 palkovsky 74 
}
75 
 
1081 jermar 76 
/** Main thread function.
77 
 *
78 
 * This function is called from __thread_entry() and is used
79 
 * to call the thread's implementing function and perform cleanup
80 
 * and exit when thread returns back. Do not call this function
81 
 * directly.
82 
 *
83 
 * @param uarg Pointer to userspace argument structure.
1392 palkovsky 84 
 *
85 
 * TODO: Thread stack pages memory leak
1081 jermar 86 
 */
1113 palkovsky 87 
void __thread_main(uspace_arg_t *uarg)
1079 jermar 88 
{
1392 palkovsky 89 
    psthread_data_t *pt;
1113 palkovsky 90 
 
1392 palkovsky 91 
    pt = psthread_setup();
92 
    __tcb_set(pt->tcb);
93 
 
94 
    async_create_manager();
95 
 
1079 jermar 96 
    uarg->uspace_thread_function(uarg->uspace_thread_arg);
97 
    free(uarg->uspace_stack);
98 
    free(uarg);
1113 palkovsky 99 
 
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 
}