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glibc  2.9
Functions
td_thr_clear_event.c File Reference
#include <stddef.h>
#include "thread_dbP.h"

Go to the source code of this file.

Functions

td_err_e td_thr_clear_event (td_thrhandle_t *th, td_thr_events_t *event) const

Function Documentation

Definition at line 27 of file td_thr_clear_event.c.

{
  td_err_e err;
  psaddr_t eventmask;
  void *copy;

  LOG ("td_thr_clear_event");

  /* Fetch the old event mask from the inferior and modify it in place.  */
  err = DB_GET_FIELD_ADDRESS (eventmask, th->th_ta_p,
                           th->th_unique, pthread, eventbuf_eventmask, 0);
  if (err == TD_OK)
    err = DB_GET_STRUCT (copy, th->th_ta_p, eventmask, td_thr_events_t);
  if (err == TD_OK)
    {
      uint32_t idx;
      for (idx = 0; idx < TD_EVENTSIZE; ++idx)
       {
         psaddr_t word;
         uint32_t mask;
         err = DB_GET_FIELD_LOCAL (word, th->th_ta_p, copy,
                                td_thr_events_t, event_bits, idx);
         if (err != TD_OK)
           break;
         mask = (uintptr_t) word;
         mask &= ~event->event_bits[idx];
         word = (psaddr_t) (uintptr_t) mask;
         err = DB_PUT_FIELD_LOCAL (th->th_ta_p, copy,
                                td_thr_events_t, event_bits, idx, word);
         if (err != TD_OK)
           break;
       }
      if (err == TD_NOAPLIC)
       {
         err = TD_OK;
         while (idx < TD_EVENTSIZE)
           if (event->event_bits[idx++] != 0)
             {
              err = TD_NOEVENT;
              break;
             }
       }
      if (err == TD_OK)
       /* Now write it back to the inferior.  */
       err = DB_PUT_STRUCT (th->th_ta_p, eventmask, td_thr_events_t, copy);
    }

  return err;
}

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