| /* Map thread ID to thread handle. |
| Copyright (C) 1999, 2001 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" |
| |
| |
| td_err_e |
| td_ta_map_id2thr (const td_thragent_t *ta, pthread_t pt, td_thrhandle_t *th) |
| { |
| struct pthread_handle_struct phc; |
| struct _pthread_descr_struct pds; |
| int pthread_threads_max; |
| |
| LOG ("td_ta_map_id2thr"); |
| |
| /* Test whether the TA parameter is ok. */ |
| if (! ta_ok (ta)) |
| return TD_BADTA; |
| |
| /* Make the following expression a bit smaller. */ |
| pthread_threads_max = ta->pthread_threads_max; |
| |
| /* We can compute the entry in the handle array we want. */ |
| if (ps_pdread (ta->ph, ta->handles + pt % pthread_threads_max, &phc, |
| sizeof (struct pthread_handle_struct)) != PS_OK) |
| return TD_ERR; /* XXX Other error value? */ |
| |
| /* Test whether this entry is in use. */ |
| if (phc.h_descr == NULL) |
| return TD_BADTH; |
| |
| /* Next test: get the descriptor to see whether this is not an old |
| thread handle. */ |
| if (ps_pdread (ta->ph, phc.h_descr, &pds, |
| sizeof (struct _pthread_descr_struct)) != PS_OK) |
| return TD_ERR; /* XXX Other error value? */ |
| |
| if (pds.p_tid != pt) |
| return TD_BADTH; |
| |
| if (pds.p_terminated != 0) |
| return TD_NOTHR; |
| |
| /* Create the `td_thrhandle_t' object. */ |
| th->th_ta_p = (td_thragent_t *) ta; |
| th->th_unique = phc.h_descr; |
| |
| return TD_OK; |
| } |