From a319d590551ff74bbc4de51243e2d5f20ac4c7fd Mon Sep 17 00:00:00 2001 From: Austin Foxley Date: Sat, 17 Oct 2009 12:32:38 -0700 Subject: libpthread/nptl_db: debugging support for nptl Signed-off-by: Austin Foxley --- libpthread/nptl_db/td_ta_tsd_iter.c | 81 +++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 libpthread/nptl_db/td_ta_tsd_iter.c (limited to 'libpthread/nptl_db/td_ta_tsd_iter.c') diff --git a/libpthread/nptl_db/td_ta_tsd_iter.c b/libpthread/nptl_db/td_ta_tsd_iter.c new file mode 100644 index 000000000..9cfb1e8de --- /dev/null +++ b/libpthread/nptl_db/td_ta_tsd_iter.c @@ -0,0 +1,81 @@ +/* Iterate over a process's thread-specific data. + Copyright (C) 1999,2000,2001,2002,2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 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" +#include + +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; +} -- cgit v1.2.3