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glibc  2.9
Functions
td_thr_validate.c File Reference
#include "thread_dbP.h"
#include <linuxthreads/internals.h>

Go to the source code of this file.

Functions

td_err_e td_thr_validate (const td_thrhandle_t *th)

Function Documentation

Definition at line 26 of file td_thr_validate.c.

{
  struct pthread_handle_struct *handles = th->th_ta_p->handles;
  int pthread_threads_max = th->th_ta_p->pthread_threads_max;
  int cnt;
  struct pthread_handle_struct phc;

  LOG ("td_thr_validate");

  /* A special case: if the program just starts up the handle is
     NULL.  */
  if (th->th_unique == NULL)
    {
      /* Read the first handle.  If the pointer to the thread
        descriptor is not NULL this is an error.  */
      if (ps_pdread (th->th_ta_p->ph, handles, &phc,
                   sizeof (struct pthread_handle_struct)) != PS_OK)
       return TD_ERR;       /* XXX Other error value?  */

      return phc.h_descr == NULL ? TD_OK : TD_NOTHR;
    }

  /* Now get all descriptors, one after the other.  */
  for (cnt = 0; cnt < pthread_threads_max; ++cnt, ++handles)
    {
      if (ps_pdread (th->th_ta_p->ph, handles, &phc,
                   sizeof (struct pthread_handle_struct)) != PS_OK)
       return TD_ERR;       /* XXX Other error value?  */

      if (phc.h_descr != NULL && phc.h_descr == th->th_unique)
       {
         struct _pthread_descr_struct pds;

         if (ps_pdread (th->th_ta_p->ph, phc.h_descr, &pds,
                      th->th_ta_p->sizeof_descr) != PS_OK)
           return TD_ERR;   /* XXX Other error value?  */

         /* XXX There should be another test using the TID but this is
            currently not available.  */
         return pds.p_terminated != 0 ? TD_NOTHR : TD_OK;
       }
    }

  return TD_ERR;
}