72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
|
/* Get a thread-specific data pointer for a thread.
|
||
|
|
Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
|
||
|
|
This file is part of the GNU C Library.
|
||
|
|
Contributed by Ulrich Drepper <drepper@redhat.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_thr_tsd (const td_thrhandle_t *th, const thread_key_t tk, void **data)
|
||
|
|
{
|
||
|
|
LOG ("td_thr_tsd");
|
||
|
|
|
||
|
|
/* Check correct value of key. */
|
||
|
|
if (tk >= th->th_ta_p->pthread_keys_max)
|
||
|
|
return TD_BADKEY;
|
||
|
|
|
||
|
|
/* Get the key entry. */
|
||
|
|
uintptr_t seq;
|
||
|
|
if (ps_pdread (th->th_ta_p->ph, &th->th_ta_p->keys[tk].seq, &seq,
|
||
|
|
sizeof (uintptr_t)) != PS_OK)
|
||
|
|
return TD_ERR; /* XXX Other error value? */
|
||
|
|
|
||
|
|
/* Fail if this key is not at all used. */
|
||
|
|
if (KEY_UNUSED (seq))
|
||
|
|
return TD_BADKEY;
|
||
|
|
|
||
|
|
/* Compute the indeces. */
|
||
|
|
int pthread_key_2ndlevel_size = th->th_ta_p->pthread_key_2ndlevel_size;
|
||
|
|
unsigned int idx1st = tk / pthread_key_2ndlevel_size;
|
||
|
|
unsigned int idx2nd = tk % pthread_key_2ndlevel_size;
|
||
|
|
|
||
|
|
struct pthread_key_data *level1;
|
||
|
|
if (ps_pdread (th->th_ta_p->ph,
|
||
|
|
&((struct pthread *) th->th_unique)->specific[idx1st],
|
||
|
|
&level1, sizeof (level1)) != PS_OK)
|
||
|
|
return TD_ERR; /* XXX Other error value? */
|
||
|
|
|
||
|
|
/* Check the pointer to the second level array. */
|
||
|
|
if (level1 == NULL)
|
||
|
|
return TD_NOTSD;
|
||
|
|
|
||
|
|
struct pthread_key_data level2;
|
||
|
|
if (ps_pdread (th->th_ta_p->ph, &level1[idx2nd], &level2,
|
||
|
|
sizeof (level2)) != PS_OK)
|
||
|
|
return TD_ERR; /* XXX Other error value? */
|
||
|
|
|
||
|
|
/* Check whether the data is valid. */
|
||
|
|
if (level2.seq != seq)
|
||
|
|
return TD_NOTSD;
|
||
|
|
|
||
|
|
if (level2.data != NULL)
|
||
|
|
*data = level2.data;
|
||
|
|
|
||
|
|
return TD_OK;
|
||
|
|
}
|