linuxthreads_db/td_ta_delete.c

   1 /* Detach to target process.
   2    Copyright (C) 1999 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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <stdlib.h>
  22
  23 #include "thread_dbP.h"
  24
  25
  26 td_err_e
  27 td_ta_delete (td_thragent_t *ta)
  28 {
  29   LOG (__FUNCTION__);
  30
  31   /* Safety check.  */
  32   if (ta == NULL || __td_agent_list == NULL)
  33     return TD_BADTA;
  34
  35   /* Remove the handle from the list.  */
  36   if (ta == __td_agent_list->ta)
  37     /* It's the first element of the list.  */
  38     __td_agent_list = __td_agent_list->next;
  39   else
  40     {
  41       /* We have to search for it.  */
  42       struct agent_list *runp = __td_agent_list;
  43
  44       while (runp->next != NULL && runp->next->ta != ta)
  45         runp = runp->next;
  46
  47       if (runp->next == NULL)
  48         /* It's not a valid decriptor since it is not in the list.  */
  49         return TD_BADTA;
  50
  51       runp->next = runp->next->next;
  52     }
  53
  54   /* The handle was allocated in `td_ta_new'.  */
  55   free (ta);
  56
  57   return TD_OK;
  58 }