82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/* Which thread is running on an lwp?
|
|
Copyright (C) 1999 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include "thread_dbP.h"
|
|
|
|
|
|
td_err_e
|
|
td_ta_map_lwp2thr (const td_thragent_t *ta, lwpid_t lwpid, td_thrhandle_t *th)
|
|
{
|
|
int pthread_threads_max = ta->pthread_threads_max;
|
|
size_t sizeof_descr = ta->sizeof_descr;
|
|
struct pthread_handle_struct phc[pthread_threads_max];
|
|
size_t cnt;
|
|
#ifdef ALL_THREADS_STOPPED
|
|
int num;
|
|
#else
|
|
# define num 1
|
|
#endif
|
|
|
|
LOG (__FUNCTION__);
|
|
|
|
/* Test whether the TA parameter is ok. */
|
|
if (! ta_ok (ta))
|
|
return TD_BADTA;
|
|
|
|
/* Read all the descriptors. */
|
|
if (ps_pdread (ta->ph, ta->handles, phc,
|
|
sizeof (struct pthread_handle_struct) * pthread_threads_max)
|
|
!= PS_OK)
|
|
return TD_ERR; /* XXX Other error value? */
|
|
|
|
#ifdef ALL_THREADS_STOPPED
|
|
/* Read the number of currently active threads. */
|
|
if (ps_pdread (ta->ph, ta->pthread_handles_num, &num, sizeof (int)) != PS_OK)
|
|
return TD_ERR; /* XXX Other error value? */
|
|
#endif
|
|
|
|
/* Get the entries one after the other and find out whether the ID
|
|
matches. */
|
|
for (cnt = 0; cnt < pthread_threads_max && num > 0; ++cnt)
|
|
if (phc[cnt].h_descr != NULL)
|
|
{
|
|
struct _pthread_descr_struct pds;
|
|
|
|
#ifdef ALL_THREADS_STOPPED
|
|
/* First count this active thread. */
|
|
--num;
|
|
#endif
|
|
|
|
if (ps_pdread (ta->ph, phc[cnt].h_descr, &pds, sizeof_descr) != PS_OK)
|
|
return TD_ERR; /* XXX Other error value? */
|
|
|
|
if ((pds.p_pid ?: ps_getpid (ta->ph)) == lwpid)
|
|
{
|
|
/* Found it. Now fill in the `td_thrhandle_t' object. */
|
|
th->th_ta_p = (td_thragent_t *) ta;
|
|
th->th_unique = phc[cnt].h_descr;
|
|
|
|
return TD_OK;
|
|
}
|
|
}
|
|
|
|
return TD_NOLWP;
|
|
}
|