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glibc  2.9
Functions
td_ta_tsd_iter.c File Reference
#include "thread_dbP.h"
#include <alloca.h>

Go to the source code of this file.

Functions

td_err_e td_ta_tsd_iter (const td_thragent_t *ta_arg, td_key_iter_f *callback, void *cbdata_p)

Function Documentation

td_err_e td_ta_tsd_iter ( const td_thragent_t *  ta_arg,
td_key_iter_f callback,
void *  cbdata_p 
)

Definition at line 25 of file td_ta_tsd_iter.c.

{
  td_thragent_t *const ta = (td_thragent_t *) ta_arg;
  td_err_e err;
  void *keys;
  size_t keys_nb, keys_elemsize;
  psaddr_t addr;
  uint32_t idx;

  LOG ("td_ta_tsd_iter");

  /* Test whether the TA parameter is ok.  */
  if (! ta_ok (ta))
    return TD_BADTA;

  /* This makes sure we have the size information on hand.  */
  addr = 0;
  err = _td_locate_field (ta,
                       ta->ta_var___pthread_keys, SYM_DESC___pthread_keys,
                       (psaddr_t) 0 + 1, &addr);
  if (err != TD_OK)
    return err;

  /* Now copy in the entire array of key descriptors.  */
  keys_elemsize = (addr - (psaddr_t) 0) / 8;
  keys_nb = keys_elemsize * DB_DESC_NELEM (ta->ta_var___pthread_keys);
  keys = __alloca (keys_nb);
  err = DB_GET_SYMBOL (addr, ta, __pthread_keys);
  if (err != TD_OK)
    return err;
  if (ps_pdread (ta->ph, addr, keys, keys_nb) != PS_OK)
    return TD_ERR;

  /* Now get all descriptors, one after the other.  */
  for (idx = 0; idx < DB_DESC_NELEM (ta->ta_var___pthread_keys); ++idx)
    {
      psaddr_t seq, destr;
      err = DB_GET_FIELD_LOCAL (seq, ta, keys, pthread_key_struct, seq, 0);
      if (err != TD_OK)
       return err;
      if (((uintptr_t) seq) & 1)
       {
         err = DB_GET_FIELD_LOCAL (destr, ta, keys, pthread_key_struct,
                                destr, 0);
         if (err != TD_OK)
           return err;
         /* Return with an error if the callback returns a nonzero value.  */
         if (callback ((thread_key_t) idx, destr, cbdata_p) != 0)
           return TD_DBERR;
       }
      /* Advance to the next element in the copied array.  */
      keys += keys_elemsize;
    }

  return TD_OK;
}

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