Permalink
Cannot retrieve contributors at this time
Name already in use
A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
glibc/linuxthreads_db/td_ta_map_lwp2thr.c
Go to fileThis commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
81 lines (65 sloc)
2.49 KB
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* 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 Library General Public License as | |
published by the Free Software Foundation; either version 2 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 | |
Library General Public License for more details. | |
You should have received a copy of the GNU Library General Public | |
License along with the GNU C Library; see the file COPYING.LIB. 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; | |
} |