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81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
/* Iterate over a process's thread-specific data.
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Copyright (C) 1999,2000,2001,2002,2003 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, see
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<http://www.gnu.org/licenses/>. */
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#include "thread_dbP.h"
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#include <alloca.h>
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td_err_e
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td_ta_tsd_iter (const td_thragent_t *ta_arg, td_key_iter_f *callback,
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void *cbdata_p)
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{
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td_thragent_t *const ta = (td_thragent_t *) ta_arg;
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td_err_e err;
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void *keys;
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size_t keys_nb, keys_elemsize;
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psaddr_t addr;
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uint32_t idx;
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LOG ("td_ta_tsd_iter");
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/* Test whether the TA parameter is ok. */
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if (! ta_ok (ta))
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return TD_BADTA;
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/* This makes sure we have the size information on hand. */
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addr = 0;
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err = _td_locate_field (ta,
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ta->ta_var___pthread_keys, SYM_DESC___pthread_keys,
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(psaddr_t) 0 + 1, &addr);
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if (err != TD_OK)
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return err;
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/* Now copy in the entire array of key descriptors. */
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keys_elemsize = (addr - (psaddr_t) 0) / 8;
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keys_nb = keys_elemsize * DB_DESC_NELEM (ta->ta_var___pthread_keys);
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keys = __alloca (keys_nb);
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err = DB_GET_SYMBOL (addr, ta, __pthread_keys);
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if (err != TD_OK)
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return err;
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if (ps_pdread (ta->ph, addr, keys, keys_nb) != PS_OK)
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return TD_ERR;
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/* Now get all descriptors, one after the other. */
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for (idx = 0; idx < DB_DESC_NELEM (ta->ta_var___pthread_keys); ++idx)
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{
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psaddr_t seq, destr;
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err = DB_GET_FIELD_LOCAL (seq, ta, keys, pthread_key_struct, seq, 0);
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if (err != TD_OK)
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return err;
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if (((uintptr_t) seq) & 1)
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{
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err = DB_GET_FIELD_LOCAL (destr, ta, keys, pthread_key_struct,
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destr, 0);
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if (err != TD_OK)
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return err;
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/* Return with an error if the callback returns a nonzero value. */
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if (callback ((thread_key_t) idx, destr, cbdata_p) != 0)
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return TD_DBERR;
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}
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/* Advance to the next element in the copied array. */
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keys += keys_elemsize;
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}
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return TD_OK;
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}
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