libpthread/linuxthreads_db/td_ta_delete.c

   1 /* Detach to target process.
   2    Copyright (C) 1999, 2001 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
   5
   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.
  10
  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.
  15
  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/>.  */
  19
  20 #include <stdlib.h>
  21
  22 #include "thread_dbP.h"
  23
  24
  25 td_err_e
  26 td_ta_delete (td_thragent_t *ta)
  27 {
  28   LOG ("td_ta_delete");
  29
  30   /* Safety check.  */
  31   if (ta == NULL || __td_agent_list == NULL)
  32     return TD_BADTA;
  33
  34   /* Remove the handle from the list.  */
  35   if (ta == __td_agent_list->ta)
  36     /* It's the first element of the list.  */
  37     __td_agent_list = __td_agent_list->next;
  38   else
  39     {
  40       /* We have to search for it.  */
  41       struct agent_list *runp = __td_agent_list;
  42
  43       while (runp->next != NULL && runp->next->ta != ta)
  44         runp = runp->next;
  45
  46       if (runp->next == NULL)
  47         /* It's not a valid descriptor since it is not in the list.  */
  48         return TD_BADTA;
  49
  50       runp->next = runp->next->next;
  51     }
  52
  53   /* The handle was allocated in `td_ta_new'.  */
  54   free (ta);
  55
  56   return TD_OK;
  57 }