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- /* Validate a thread handle.
- Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.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 <linuxthreads/internals.h>
- td_err_e
- td_thr_validate (const td_thrhandle_t *th)
- {
- struct pthread_handle_struct *handles = th->th_ta_p->handles;
- int pthread_threads_max = th->th_ta_p->pthread_threads_max;
- int cnt;
- struct pthread_handle_struct phc;
- LOG ("td_thr_validate");
- /* A special case: if the program just starts up the handle is
- NULL. */
- if (th->th_unique == NULL)
- {
- /* Read the first handle. If the pointer to the thread
- descriptor is not NULL this is an error. */
- if (ps_pdread (th->th_ta_p->ph, handles, &phc,
- sizeof (struct pthread_handle_struct)) != PS_OK)
- return TD_ERR; /* XXX Other error value? */
- return phc.h_descr == NULL ? TD_OK : TD_NOTHR;
- }
- /* Now get all descriptors, one after the other. */
- for (cnt = 0; cnt < pthread_threads_max; ++cnt, ++handles)
- {
- if (ps_pdread (th->th_ta_p->ph, handles, &phc,
- sizeof (struct pthread_handle_struct)) != PS_OK)
- return TD_ERR; /* XXX Other error value? */
- if (phc.h_descr != NULL && phc.h_descr == th->th_unique)
- {
- struct _pthread_descr_struct pds;
- if (ps_pdread (th->th_ta_p->ph, phc.h_descr, &pds,
- th->th_ta_p->sizeof_descr) != PS_OK)
- return TD_ERR; /* XXX Other error value? */
- /* XXX There should be another test using the TID but this is
- currently not available. */
- return pds.p_terminated != 0 ? TD_NOTHR : TD_OK;
- }
- }
- return TD_ERR;
- }
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