diff options
Diffstat (limited to 'linuxthreads_db/td_ta_thr_iter.c')
| -rw-r--r-- | linuxthreads_db/td_ta_thr_iter.c | 129 |
1 files changed, 79 insertions, 50 deletions
diff --git a/linuxthreads_db/td_ta_thr_iter.c b/linuxthreads_db/td_ta_thr_iter.c index ecc86c7871..8cb8c63427 100644 --- a/linuxthreads_db/td_ta_thr_iter.c +++ b/linuxthreads_db/td_ta_thr_iter.c @@ -21,14 +21,69 @@ #include "thread_dbP.h" +static int +handle_descr (const td_thragent_t *ta, td_thr_iter_f *callback, + void *cbdata_p, td_thr_state_e state, int ti_pri, + size_t cnt, pthread_descr descr) +{ + struct _pthread_descr_struct pds; + size_t sizeof_descr = ta->sizeof_descr; + td_thrhandle_t th; + +#ifdef ALL_THREADS_STOPPED + /* First count this active thread. */ + --num; +#endif + + if (ps_pdread (ta->ph, descr, &pds, sizeof_descr) != PS_OK) + return TD_ERR; /* XXX Other error value? */ + + /* The manager thread must be handled special. The descriptor + exists but the thread only gets created when the first + `pthread_create' call is issued. A clear indication that this + happened is when the p_pid field is non-zero. */ + if (cnt == 1 && pds.p_pid == 0) + return TD_OK; + + /* Now test whether this thread matches the specified + conditions. */ + + /* Only if the priority level is as high or higher. */ + if (pds.p_priority < ti_pri) + return TD_OK; + + /* Test the state. + XXX This is incomplete. */ + if (state != TD_THR_ANY_STATE) + return TD_OK; + + /* XXX For now we ignore threads which are not running anymore. + The reason is that gdb tries to get the registers and fails. + In future we should have a special mode of the thread library + in which we keep the process around until the actual join + operation happened. */ + if (pds.p_exited != 0) + return TD_OK; + + /* Yep, it matches. Call the callback function. */ + th.th_ta_p = (td_thragent_t *) ta; + th.th_unique = descr; + if (callback (&th, cbdata_p) != 0) + return TD_DBERR; + + /* All done successfully. */ + return TD_OK; +} + + td_err_e td_ta_thr_iter (const td_thragent_t *ta, td_thr_iter_f *callback, void *cbdata_p, td_thr_state_e state, int ti_pri, sigset_t *ti_sigmask_p, unsigned int ti_user_flags) { int pthread_threads_max; - size_t sizeof_descr; struct pthread_handle_struct *phc; + td_err_e result = TD_OK; int cnt; #ifdef ALL_THREADS_STOPPED int num; @@ -43,14 +98,28 @@ td_ta_thr_iter (const td_thragent_t *ta, td_thr_iter_f *callback, return TD_BADTA; pthread_threads_max = ta->pthread_threads_max; - sizeof_descr = ta->sizeof_descr; phc = (struct pthread_handle_struct *) alloca (sizeof (phc[0]) * pthread_threads_max); - /* Read all the descriptors. */ + /* First read only the main thread and manager thread information. */ if (ps_pdread (ta->ph, ta->handles, phc, - sizeof (struct pthread_handle_struct) * pthread_threads_max) - != PS_OK) + sizeof (struct pthread_handle_struct) * 2) != PS_OK) + return TD_ERR; /* XXX Other error value? */ + + /* Now handle these descriptors. */ + result = handle_descr (ta, callback, cbdata_p, state, ti_pri, 0, + phc[0].h_descr); + if (result != TD_OK) + return result; + result = handle_descr (ta, callback, cbdata_p, state, ti_pri, 1, + phc[1].h_descr); + if (result != TD_OK) + return result; + + /* Read all the descriptors. */ + if (ps_pdread (ta->ph, ta->handles, &phc[2], + (sizeof (struct pthread_handle_struct) + * (pthread_threads_max - 2))) != PS_OK) return TD_ERR; /* XXX Other error value? */ #ifdef ALL_THREADS_STOPPED @@ -63,51 +132,11 @@ td_ta_thr_iter (const td_thragent_t *ta, td_thr_iter_f *callback, for (cnt = 0; cnt < pthread_threads_max && num > 0; ++cnt) if (phc[cnt].h_descr != NULL) { - struct _pthread_descr_struct pds; - td_thrhandle_t th; - -#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? */ - - /* The manager thread must be handled special. The descriptor - exists but the thread only gets created when the first - `pthread_create' call is issued. A clear indication that - this happened is when the p_pid field is non-zero. */ - if (cnt == 1 && pds.p_pid == 0) - continue; - - /* Now test whether this thread matches the specified - conditions. */ - - /* Only if the priority level is as high or higher. */ - if (pds.p_priority < ti_pri) - continue; - - /* Test the state. - XXX This is incomplete. */ - if (state != TD_THR_ANY_STATE) - continue; - - /* XXX For now we ignore threads which are not running anymore. - The reason is that gdb tries to get the registers and fails. - In future we should have a special mode of the thread library - in which we keep the process around until the actual join - operation happened. */ - if (pds.p_exited != 0) - continue; - - /* Yep, it matches. Call the callback function. */ - th.th_ta_p = (td_thragent_t *) ta; - th.th_unique = phc[cnt].h_descr; - if (callback (&th, cbdata_p) != 0) - return TD_DBERR; + result = handle_descr (ta, callback, cbdata_p, state, ti_pri, cnt, + phc[cnt].h_descr); + if (result != TD_OK) + break; } - return TD_OK; + return result; } |