mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-08 22:30:07 +00:00
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/* Iterate over a process's thread-specific data.
|
|
Copyright (C) 1999-2016 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, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdint.h>
|
|
#include "thread_dbP.h"
|
|
#include <alloca.h>
|
|
|
|
td_err_e
|
|
td_ta_tsd_iter (const td_thragent_t *ta_arg, td_key_iter_f *callback,
|
|
void *cbdata_p)
|
|
{
|
|
td_thragent_t *const ta = (td_thragent_t *) ta_arg;
|
|
td_err_e err;
|
|
void *keys;
|
|
size_t keys_nb, keys_elemsize;
|
|
psaddr_t addr;
|
|
uint32_t idx;
|
|
|
|
LOG ("td_ta_tsd_iter");
|
|
|
|
/* Test whether the TA parameter is ok. */
|
|
if (! ta_ok (ta))
|
|
return TD_BADTA;
|
|
|
|
/* This makes sure we have the size information on hand. */
|
|
addr = 0;
|
|
err = _td_locate_field (ta,
|
|
ta->ta_var___pthread_keys, SYM_DESC___pthread_keys,
|
|
(psaddr_t) 0 + 1, &addr);
|
|
if (err != TD_OK)
|
|
return err;
|
|
|
|
/* Now copy in the entire array of key descriptors. */
|
|
keys_elemsize = (addr - (psaddr_t) 0) / 8;
|
|
keys_nb = keys_elemsize * DB_DESC_NELEM (ta->ta_var___pthread_keys);
|
|
keys = __alloca (keys_nb);
|
|
err = DB_GET_SYMBOL (addr, ta, __pthread_keys);
|
|
if (err != TD_OK)
|
|
return err;
|
|
if (ps_pdread (ta->ph, addr, keys, keys_nb) != PS_OK)
|
|
return TD_ERR;
|
|
|
|
/* Now get all descriptors, one after the other. */
|
|
for (idx = 0; idx < DB_DESC_NELEM (ta->ta_var___pthread_keys); ++idx)
|
|
{
|
|
psaddr_t seq, destr;
|
|
err = DB_GET_FIELD_LOCAL (seq, ta, keys, pthread_key_struct, seq, 0);
|
|
if (err != TD_OK)
|
|
return err;
|
|
if (((uintptr_t) seq) & 1)
|
|
{
|
|
err = DB_GET_FIELD_LOCAL (destr, ta, keys, pthread_key_struct,
|
|
destr, 0);
|
|
if (err != TD_OK)
|
|
return err;
|
|
/* Return with an error if the callback returns a nonzero value. */
|
|
if (callback ((thread_key_t) idx, destr, cbdata_p) != 0)
|
|
return TD_DBERR;
|
|
}
|
|
/* Advance to the next element in the copied array. */
|
|
keys += keys_elemsize;
|
|
}
|
|
|
|
return TD_OK;
|
|
}
|