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"
21 #include <linuxthreads/internals.h>
25 td_thr_validate (const td_thrhandle_t *th)
27 struct pthread_handle_struct *handles = th->th_ta_p->handles;
28 int pthread_threads_max = th->th_ta_p->pthread_threads_max;
30 struct pthread_handle_struct phc;
32 LOG ("td_thr_validate");
34 /* A special case: if the program just starts up the handle is
36 if (th->th_unique == NULL)
38 /* Read the first handle. If the pointer to the thread
39 descriptor is not NULL this is an error. */
40 if (ps_pdread (th->th_ta_p->ph, handles, &phc,
41 sizeof (struct pthread_handle_struct)) != PS_OK)
42 return TD_ERR; /* XXX Other error value? */
44 return phc.h_descr == NULL ? TD_OK : TD_NOTHR;
47 /* Now get all descriptors, one after the other. */
48 for (cnt = 0; cnt < pthread_threads_max; ++cnt, ++handles)
50 if (ps_pdread (th->th_ta_p->ph, handles, &phc,
51 sizeof (struct pthread_handle_struct)) != PS_OK)
52 return TD_ERR; /* XXX Other error value? */
54 if (phc.h_descr != NULL && phc.h_descr == th->th_unique)
56 struct _pthread_descr_struct pds;
58 if (ps_pdread (th->th_ta_p->ph, phc.h_descr, &pds,
59 th->th_ta_p->sizeof_descr) != PS_OK)
60 return TD_ERR; /* XXX Other error value? */
62 /* XXX There should be another test using the TID but this is
63 currently not available. */
64 return pds.p_terminated != 0 ? TD_NOTHR : TD_OK;