td_ta_get_nthreads.c 1.4 KB

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  1. /* Get the number of threads in the process.
  2. Copyright (C) 1999, 2001 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
  5. The GNU C Library is free software; you can redistribute it and/or
  6. modify it under the terms of the GNU Lesser General Public
  7. License as published by the Free Software Foundation; either
  8. version 2.1 of the License, or (at your option) any later version.
  9. The GNU C Library is distributed in the hope that it will be useful,
  10. but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. Lesser General Public License for more details.
  13. You should have received a copy of the GNU Lesser General Public
  14. License along with the GNU C Library; if not, write to the Free
  15. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  16. 02111-1307 USA. */
  17. #include "thread_dbP.h"
  18. td_err_e
  19. td_ta_get_nthreads (const td_thragent_t *ta, int *np)
  20. {
  21. psaddr_t addr;
  22. LOG (__FUNCTION__);
  23. /* Test whether the TA parameter is ok. */
  24. if (! ta_ok (ta))
  25. return TD_BADTA;
  26. /* Access the variable `__pthread_handles_num'. */
  27. if (td_lookup (ta->ph, PTHREAD_HANDLES_NUM, &addr) != PS_OK)
  28. return TD_ERR; /* XXX Other error value? */
  29. if (ps_pdread (ta->ph, addr, np, sizeof (int)) != PS_OK)
  30. return TD_ERR; /* XXX Other error value? */
  31. return TD_OK;
  32. }