Back to index

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

Go to the source code of this file.

Functions

td_err_e td_thr_event_getmsg (const td_thrhandle_t *th, td_event_msg_t *msg)

Function Documentation

Definition at line 28 of file td_thr_event_getmsg.c.

{
  td_eventbuf_t event;

  LOG ("td_thr_event_getmsg");

  /* If the thread descriptor has not yet been created there cannot be
     any event.  */
  if (th->th_unique == NULL)
    return TD_NOMSG;

  /* Read the even structure from the target.  */
  if (ps_pdread (th->th_ta_p->ph,
               ((char *) th->th_unique
                + offsetof (struct _pthread_descr_struct, p_eventbuf)),
               &event, sizeof (td_eventbuf_t)) != PS_OK)
    return TD_ERR;   /* XXX Other error value?  */

  /* Check whether an event occurred.  */
  if (event.eventnum == TD_EVENT_NONE)
    /* Nothing.  */
    return TD_NOMSG;

  /* Fill the user's data structure.  */
  msg->event = event.eventnum;
  msg->th_p = th;
  msg->msg.data = (uintptr_t) event.eventdata;

  /* And clear the event message in the target.  */
  memset (&event, '\0', sizeof (td_eventbuf_t));
  if (ps_pdwrite (th->th_ta_p->ph,
                ((char *) th->th_unique
                 + offsetof (struct _pthread_descr_struct, p_eventbuf)),
                &event, sizeof (td_eventbuf_t)) != PS_OK)
    return TD_ERR;   /* XXX Other error value?  */

  return TD_OK;
}