1 /* Validate a thread handle.
2 Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
20 #include "thread_dbP.h"
24 td_thr_validate (const td_thrhandle_t
*th
)
26 struct pthread_handle_struct
*handles
= th
->th_ta_p
->handles
;
27 int pthread_threads_max
= th
->th_ta_p
->pthread_threads_max
;
29 struct pthread_handle_struct phc
;
31 LOG ("td_thr_validate");
33 /* A special case: if the program just starts up the handle is
35 if (th
->th_unique
== NULL
)
37 /* Read the first handle. If the pointer to the thread
38 descriptor is not NULL this is an error. */
39 if (ps_pdread (th
->th_ta_p
->ph
, handles
, &phc
,
40 sizeof (struct pthread_handle_struct
)) != PS_OK
)
41 return TD_ERR
; /* XXX Other error value? */
43 return phc
.h_descr
== NULL
? TD_OK
: TD_NOTHR
;
46 /* Now get all descriptors, one after the other. */
47 for (cnt
= 0; cnt
< pthread_threads_max
; ++cnt
, ++handles
)
49 if (ps_pdread (th
->th_ta_p
->ph
, handles
, &phc
,
50 sizeof (struct pthread_handle_struct
)) != PS_OK
)
51 return TD_ERR
; /* XXX Other error value? */
53 if (phc
.h_descr
!= NULL
&& phc
.h_descr
== th
->th_unique
)
55 struct _pthread_descr_struct pds
;
57 if (ps_pdread (th
->th_ta_p
->ph
, phc
.h_descr
, &pds
,
58 th
->th_ta_p
->sizeof_descr
) != PS_OK
)
59 return TD_ERR
; /* XXX Other error value? */
61 /* XXX There should be another test using the TID but this is
62 currently not available. */
63 return pds
.p_terminated
!= 0 ? TD_NOTHR
: TD_OK
;