1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/* Validate a thread handle.
Copyright (C) 1999,2001,2002,2003,2004,2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include "thread_dbP.h"
#include <stdbool.h>
static td_err_e
check_thread_list (const td_thrhandle_t *th, psaddr_t head, bool *uninit)
{
td_err_e err;
psaddr_t next, ofs;
err = DB_GET_FIELD (next, th->th_ta_p, head, list_t, next, 0);
if (err == TD_OK)
{
if (next == 0)
{
*uninit = true;
return TD_NOTHR;
}
err = DB_GET_FIELD_ADDRESS (ofs, th->th_ta_p, 0, pthread, list, 0);
}
while (err == TD_OK)
{
if (next == head)
return TD_NOTHR;
if (next - (ofs - (psaddr_t) 0) == th->th_unique)
return TD_OK;
err = DB_GET_FIELD (next, th->th_ta_p, next, list_t, next, 0);
}
return err;
}
td_err_e
td_thr_validate (const td_thrhandle_t *th)
{
td_err_e err;
psaddr_t list;
LOG ("td_thr_validate");
/* First check the list with threads using user allocated stacks. */
bool uninit = false;
err = DB_GET_SYMBOL (list, th->th_ta_p, __stack_user);
if (err == TD_OK)
err = check_thread_list (th, list, &uninit);
/* If our thread is not on this list search the list with stack
using implementation allocated stacks. */
if (err == TD_NOTHR)
{
err = DB_GET_SYMBOL (list, th->th_ta_p, stack_used);
if (err == TD_OK)
err = check_thread_list (th, list, &uninit);
if (err == TD_NOTHR && uninit && th->th_unique == 0)
/* __pthread_initialize_minimal has not run yet.
There is only the special case thread handle. */
err = TD_OK;
}
return err;
}
|
