diff options
Diffstat (limited to 'REORG.TODO/nptl_db/td_thr_get_info.c')
| -rw-r--r-- | REORG.TODO/nptl_db/td_thr_get_info.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/REORG.TODO/nptl_db/td_thr_get_info.c b/REORG.TODO/nptl_db/td_thr_get_info.c new file mode 100644 index 0000000000..48979b8e28 --- /dev/null +++ b/REORG.TODO/nptl_db/td_thr_get_info.c @@ -0,0 +1,126 @@ +/* Get thread information. + Copyright (C) 1999-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.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, see + <http://www.gnu.org/licenses/>. */ + +#include <stddef.h> +#include <string.h> +#include <stdint.h> +#include "thread_dbP.h" + + +td_err_e +td_thr_get_info (const td_thrhandle_t *th, td_thrinfo_t *infop) +{ + td_err_e err; + void *copy; + psaddr_t tls, schedpolicy, schedprio, cancelhandling, tid, report_events; + + LOG ("td_thr_get_info"); + + if (th->th_unique == 0) + { + /* Special case for the main thread before initialization. */ + copy = NULL; + tls = 0; + cancelhandling = 0; + schedpolicy = SCHED_OTHER; + schedprio = 0; + tid = 0; + err = DB_GET_VALUE (report_events, th->th_ta_p, + __nptl_initial_report_events, 0); + } + else + { + /* Copy the whole descriptor in once so we can access the several + fields locally. Excess copying in one go is much better than + multiple ps_pdread calls. */ + err = DB_GET_STRUCT (copy, th->th_ta_p, th->th_unique, pthread); + if (err != TD_OK) + return err; + + err = DB_GET_FIELD_ADDRESS (tls, th->th_ta_p, th->th_unique, + pthread, specific, 0); + if (err != TD_OK) + return err; + + err = DB_GET_FIELD_LOCAL (schedpolicy, th->th_ta_p, copy, pthread, + schedpolicy, 0); + if (err != TD_OK) + return err; + err = DB_GET_FIELD_LOCAL (schedprio, th->th_ta_p, copy, pthread, + schedparam_sched_priority, 0); + if (err != TD_OK) + return err; + err = DB_GET_FIELD_LOCAL (tid, th->th_ta_p, copy, pthread, tid, 0); + if (err != TD_OK) + return err; + err = DB_GET_FIELD_LOCAL (cancelhandling, th->th_ta_p, copy, pthread, + cancelhandling, 0); + if (err != TD_OK) + return err; + err = DB_GET_FIELD_LOCAL (report_events, th->th_ta_p, copy, pthread, + report_events, 0); + } + if (err != TD_OK) + return err; + + /* Fill in information. Clear first to provide reproducable + results for the fields we do not fill in. */ + memset (infop, '\0', sizeof (td_thrinfo_t)); + + infop->ti_tid = (thread_t) th->th_unique; + infop->ti_tls = (char *) tls; + infop->ti_pri = ((uintptr_t) schedpolicy == SCHED_OTHER + ? 0 : (uintptr_t) schedprio); + infop->ti_type = TD_THR_USER; + + if ((((int) (uintptr_t) cancelhandling) & EXITING_BITMASK) == 0) + /* XXX For now there is no way to get more information. */ + infop->ti_state = TD_THR_ACTIVE; + else if ((((int) (uintptr_t) cancelhandling) & TERMINATED_BITMASK) == 0) + infop->ti_state = TD_THR_ZOMBIE; + else + infop->ti_state = TD_THR_UNKNOWN; + + /* Initialization which are the same in both cases. */ + infop->ti_ta_p = th->th_ta_p; + infop->ti_lid = tid == 0 ? ps_getpid (th->th_ta_p->ph) : (uintptr_t) tid; + infop->ti_traceme = report_events != 0; + + if (copy != NULL) + err = DB_GET_FIELD_LOCAL (infop->ti_startfunc, th->th_ta_p, copy, pthread, + start_routine, 0); + if (copy != NULL && err == TD_OK) + { + uint32_t idx; + for (idx = 0; idx < TD_EVENTSIZE; ++idx) + { + psaddr_t word; + err = DB_GET_FIELD_LOCAL (word, th->th_ta_p, copy, pthread, + eventbuf_eventmask_event_bits, idx); + if (err != TD_OK) + break; + infop->ti_events.event_bits[idx] = (uintptr_t) word; + } + if (err == TD_NOAPLIC) + memset (&infop->ti_events.event_bits[idx], 0, + (TD_EVENTSIZE - idx) * sizeof infop->ti_events.event_bits[0]); + } + + return err; +} |