linuxthreads_db/td_ta_thr_iter.c

   1 /* Iterate over a process's threads.
   2    Copyright (C) 1999 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include "thread_dbP.h"
  22
  23
  24 td_err_e
  25 td_ta_thr_iter (const td_thragent_t *ta, td_thr_iter_f *callback,
  26                 void *cbdata_p, td_thr_state_e state, int ti_pri,
  27                 sigset_t *ti_sigmask_p, unsigned int ti_user_flags)
  28 {
  29   struct pthread_handle_struct *handles = ta->handles;
  30   int pthread_threads_max = ta->pthread_threads_max;
  31   int cnt;
  32
  33   LOG (__FUNCTION__);
  34
  35   /* Now get all descriptors, one after the other.  */
  36   for (cnt = 0; cnt < pthread_threads_max; ++cnt, ++handles)
  37     {
  38       struct pthread_handle_struct phc;
  39
  40       if (ps_pdread (ta->ph, handles, &phc,
  41                      sizeof (struct pthread_handle_struct)) != PS_OK)
  42         return TD_ERR;  /* XXX Other error value?  */
  43
  44       if (phc.h_descr != NULL)
  45         {
  46           struct _pthread_descr_struct pds;
  47           td_thrhandle_t th;
  48
  49           if (ps_pdread (ta->ph, phc.h_descr, &pds,
  50                          sizeof (struct _pthread_descr_struct)) != PS_OK)
  51             return TD_ERR;      /* XXX Other error value?  */
  52
  53           /* Now test whether this thread matches the specified
  54              conditions.  */
  55
  56           /* Only if the priority level is as high or higher.  */
  57           if (pds.p_priority < ti_pri)
  58             continue;
  59
  60           /* Yep, it matches.  Call the callback function.  */
  61           th.th_ta_p = (td_thragent_t *) ta;
  62           th.th_unique = phc.h_descr;
  63           if (callback (&th, cbdata_p) != 0)
  64             return TD_DBERR;
  65         }
  66     }
  67
  68   return TD_OK;
  69 }