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glibc  2.9
Functions
td_thr_get_info.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_get_info (const td_thrhandle_t *th, td_thrinfo_t *infop)

Function Documentation

Definition at line 28 of file td_thr_get_info.c.

{
  struct _pthread_descr_struct pds;

  LOG ("td_thr_get_info");

  /* Handle the case when the thread library is not yet initialized.  */
  if (th->th_unique == NULL)
    {
      memset (&pds, '\0', sizeof (pds));
      pds.p_tid = PTHREAD_THREADS_MAX;
    }
  else
    /* Get the thread descriptor.  */
    if (ps_pdread (th->th_ta_p->ph, th->th_unique, &pds,
                 th->th_ta_p->sizeof_descr) != PS_OK)
      return TD_ERR; /* XXX Other error value?  */

  /* Fill in information.  Clear first to provide reproducable
     results for the fields we do not fill in.  */
  memset (infop, '\0', sizeof (td_thrinfo_t));

  /* We have to handle the manager thread special since the thread
     descriptor in older versions is not fully initialized.  */
  if (pds.p_nr == 1)
    {
      infop->ti_tid = th->th_ta_p->pthread_threads_max * 2 + 1;
      infop->ti_type = TD_THR_SYSTEM;
      infop->ti_state = TD_THR_ACTIVE;
    }
  else
    {
      infop->ti_tid = pds.p_tid;
      infop->ti_tls = (char *) pds.p_specific;
      infop->ti_pri = pds.p_priority;
      infop->ti_type = TD_THR_USER;

      if (! pds.p_terminated)
       /* XXX For now there is no way to get more information.  */
       infop->ti_state = TD_THR_ACTIVE;
      else if (! pds.p_detached)
       infop->ti_state = TD_THR_ZOMBIE;
      else
       infop->ti_state = TD_THR_UNKNOWN;
    }

  /* Initialization which are the same in both cases.  */
  infop->ti_lid = pds.p_pid ?: ps_getpid (th->th_ta_p->ph);
  infop->ti_ta_p = th->th_ta_p;
  infop->ti_startfunc = pds.p_start_args.start_routine;
  memcpy (&infop->ti_events, &pds.p_eventbuf.eventmask,
         sizeof (td_thr_events_t));
  infop->ti_traceme = pds.p_report_events != 0;

  return TD_OK;
}