td_thr_event_getmsg.c 2.0 KB

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  1. /* Retrieve event.
  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. The GNU C Library is free software; you can redistribute it and/or
  6. modify it under the terms of the GNU Library General Public License as
  7. published by the Free Software Foundation; either version 2 of the
  8. 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. Library General Public License for more details.
  13. You should have received a copy of the GNU Library General Public
  14. License along with the GNU C Library; see the file COPYING.LIB. If not,
  15. write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  16. Boston, MA 02111-1307, USA. */
  17. #include <stddef.h>
  18. #include <string.h>
  19. #include "thread_dbP.h"
  20. td_err_e
  21. td_thr_event_getmsg (const td_thrhandle_t *th, td_event_msg_t *msg)
  22. {
  23. td_eventbuf_t event;
  24. LOG (__FUNCTION__);
  25. /* Read the even structure from the target. */
  26. if (ps_pdread (th->th_ta_p->ph,
  27. ((char *) th->th_unique
  28. + offsetof (struct _pthread_descr_struct, p_eventbuf)),
  29. &event, sizeof (td_eventbuf_t)) != PS_OK)
  30. return TD_ERR; /* XXX Other error value? */
  31. /* Check whether an event occurred. */
  32. if (event.eventnum == TD_EVENT_NONE)
  33. /* Nothing. */
  34. return TD_NOMSG;
  35. /* Fill the user's data structure. */
  36. msg->event = event.eventnum;
  37. msg->th_p = th;
  38. msg->msg.data = (uintptr_t) event.eventdata;
  39. /* And clear the event message in the target. */
  40. memset (&event, '\0', sizeof (td_eventbuf_t));
  41. if (ps_pdwrite (th->th_ta_p->ph,
  42. ((char *) th->th_unique
  43. + offsetof (struct _pthread_descr_struct, p_eventbuf)),
  44. &event, sizeof (td_eventbuf_t)) != PS_OK)
  45. return TD_ERR; /* XXX Other error value? */
  46. return TD_OK;
  47. }