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67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
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/* Validate a thread handle.
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Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include "thread_dbP.h"
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static td_err_e
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check_thread_list (const td_thrhandle_t *th, psaddr_t head)
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{
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list_t list;
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td_err_e result = TD_NOTHR;
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if (ps_pdread (th->th_ta_p->ph, head, &list.next, sizeof (list.next))
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!= PS_OK)
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return TD_ERR; /* XXX Other error value? */
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while (list.next != head)
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if ((psaddr_t) list.next - offsetof (struct pthread, header.data.list)
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== th->th_unique)
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{
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result = TD_OK;
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break;
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}
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else if (ps_pdread (th->th_ta_p->ph, list.next, &list.next,
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sizeof (list.next)) != PS_OK)
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{
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result = TD_ERR; /* XXX Other error value? */
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break;
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}
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return result;
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}
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td_err_e
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td_thr_validate (const td_thrhandle_t *th)
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{
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LOG ("td_thr_validate");
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/* First check the list with threads using user allocated stacks. */
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td_err_e result = check_thread_list (th, th->th_ta_p->stack_user);
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/* If our thread is not on this list search the list with stack
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using implementation allocated stacks. */
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if (result == TD_NOTHR)
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result = check_thread_list (th, th->th_ta_p->stack_used);
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return result;
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}
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