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* init.c (__nptl_initial_report_events): New variable.
(__pthread_initialize_minimal_internal): Initialize pd->report_events to that.
This commit is contained in:
parent
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commit
7d9d8bd189
@ -1,3 +1,9 @@
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2007-05-16 Roland McGrath <roland@redhat.com>
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* init.c (__nptl_initial_report_events): New variable.
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(__pthread_initialize_minimal_internal): Initialize pd->report_events
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to that.
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2007-06-22 Jakub Jelinek <jakub@redhat.com>
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* pthread_getattr_np.c (pthread_getattr_np): Clear cpuset and
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@ -1,3 +1,26 @@
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2007-05-16 Roland McGrath <roland@redhat.com>
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* td_thr_get_info.c: Fake the results for TH->th_unique == 0.
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* td_thr_validate.c: Likewise.
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* td_thr_setgregs.c: Likewise.
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* td_thr_setfpregs.c: Likewise.
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* td_thr_getgregs.c: Likewise.
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* td_thr_getfpregs.c: Likewise.
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* td_thr_tlsbase.c: Likewise.
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* structs.def: Add DB_VARIABLE (__nptl_initial_report_events).
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* db_info.c: Add necessary declaration.
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* td_thr_event_enable.c: Set __nptl_initial_report_events too.
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* td_ta_thr_iter.c (iterate_thread_list): Make FAKE_EMPTY bool.
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Use th_unique=0 in fake descriptor before initialization.
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* td_ta_map_lwp2thr.c (__td_ta_lookup_th_unique): New function, broken
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out of ...
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(td_ta_map_lwp2thr): ... here, call it. But don't before __stack_user
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is initialized, then fake a handle with th_unique=0.
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* thread_dbP.h: Declare it.
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2006-10-26 Pete Eberlein <eberlein@us.ibm.com>
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* nptl_db/db_info.c [TLS_DTV_AT_TP]: Fixed size init for dtvp
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@ -1,7 +1,7 @@
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/* This file is included by pthread_create.c to define in libpthread
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all the magic symbols required by libthread_db.
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Copyright (C) 2003, 2004 Free Software Foundation, Inc.
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Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -38,6 +38,8 @@ typedef struct
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typedef struct link_map link_map;
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/* Actually static in nptl/init.c, but we only need it for typeof. */
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extern bool __nptl_initial_report_events;
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#define schedparam_sched_priority schedparam.sched_priority
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@ -1,5 +1,5 @@
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/* List of types and symbols in libpthread examined by libthread_db.
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Copyright (C) 2003, 2006 Free Software Foundation, Inc.
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Copyright (C) 2003, 2006, 2007 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -56,6 +56,7 @@ DB_FUNCTION (__nptl_death_event)
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DB_SYMBOL (__nptl_threads_events)
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DB_VARIABLE (__nptl_nthreads)
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DB_VARIABLE (__nptl_last_event)
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DB_VARIABLE (__nptl_initial_report_events)
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DB_ARRAY_VARIABLE (__pthread_keys)
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DB_STRUCT (pthread_key_struct)
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@ -1,5 +1,5 @@
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/* Which thread is running on an LWP?
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Copyright (C) 2003, 2004 Free Software Foundation, Inc.
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Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -24,8 +24,8 @@
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td_err_e
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td_ta_map_lwp2thr (const td_thragent_t *ta_arg,
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lwpid_t lwpid, td_thrhandle_t *th)
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__td_ta_lookup_th_unique (const td_thragent_t *ta_arg,
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lwpid_t lwpid, td_thrhandle_t *th)
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{
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td_thragent_t *const ta = (td_thragent_t *) ta_arg;
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ps_err_e err;
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@ -118,9 +118,6 @@ td_ta_map_lwp2thr (const td_thragent_t *ta_arg,
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switch (ta->ta_howto)
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{
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case ta_howto_unknown:
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return TD_DBERR;
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default:
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return TD_DBERR;
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@ -132,6 +129,7 @@ td_ta_map_lwp2thr (const td_thragent_t *ta_arg,
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0, regs, &addr);
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if (terr != TD_OK)
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return terr;
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/* In this descriptor the nelem word is overloaded as the bias. */
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addr += (int32_t) DB_DESC_NELEM (ta->ta_howto_data.reg);
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th->th_unique = addr;
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@ -143,22 +141,22 @@ td_ta_map_lwp2thr (const td_thragent_t *ta_arg,
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if (&ps_get_thread_area == NULL)
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return TD_NOCAPAB;
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/* A la x86-64, there is a constant magic index for get_thread_area. */
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if (ps_get_thread_area (ta->ph, lwpid,
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ta->ta_howto_data.const_thread_area,
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&th->th_unique) != PS_OK)
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return TD_ERR; /* XXX Other error value? */
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break;
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/* A la x86-64, there is a magic index for get_thread_area. */
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if (ps_get_thread_area (ta->ph, lwpid,
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ta->ta_howto_data.const_thread_area,
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&th->th_unique) != PS_OK)
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return TD_ERR; /* XXX Other error value? */
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break;
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case ta_howto_reg_thread_area:
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case ta_howto_reg_thread_area:
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if (&ps_get_thread_area == NULL)
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return TD_NOCAPAB;
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/* A la i386, there is a register with an index for get_thread_area. */
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if (ps_lgetregs (ta->ph, lwpid, regs) != PS_OK)
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return TD_ERR;
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terr = _td_fetch_value_local (ta, ta->ta_howto_data.reg_thread_area, -1,
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0, regs, &addr);
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/* A la i386, a register holds the index for get_thread_area. */
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if (ps_lgetregs (ta->ph, lwpid, regs) != PS_OK)
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return TD_ERR;
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terr = _td_fetch_value_local (ta, ta->ta_howto_data.reg_thread_area,
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-1, 0, regs, &addr);
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if (terr != TD_OK)
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return terr;
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/* In this descriptor the nelem word is overloaded as scale factor. */
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@ -172,7 +170,40 @@ td_ta_map_lwp2thr (const td_thragent_t *ta_arg,
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}
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/* Found it. Now complete the `td_thrhandle_t' object. */
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th->th_ta_p = (td_thragent_t *) ta;
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th->th_ta_p = ta;
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return TD_OK;
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}
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td_err_e
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td_ta_map_lwp2thr (const td_thragent_t *ta_arg,
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lwpid_t lwpid, td_thrhandle_t *th)
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{
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td_thragent_t *const ta = (td_thragent_t *) ta_arg;
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/* We cannot rely on thread registers and such information at all
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before __pthread_initialize_minimal has gotten far enough. They
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sometimes contain garbage that would confuse us, left by the kernel
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at exec. So if it looks like initialization is incomplete, we only
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fake a special descriptor for the initial thread. */
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psaddr_t list;
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td_err_e err = DB_GET_SYMBOL (list, ta, __stack_user);
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if (err != TD_OK)
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return err;
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err = DB_GET_FIELD (list, ta, list, list_t, next, 0);
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if (err != TD_OK)
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return err;
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if (list == 0)
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{
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if (ps_getpid (ta->ph) != lwpid)
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return TD_ERR;
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th->th_ta_p = ta;
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th->th_unique = 0;
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return TD_OK;
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}
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return __td_ta_lookup_th_unique (ta_arg, lwpid, th);
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}
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@ -1,5 +1,6 @@
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/* Iterate over a process's threads.
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Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
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Copyright (C) 1999,2000,2001,2002,2003,2004,2007
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
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@ -24,7 +25,7 @@
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static td_err_e
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iterate_thread_list (td_thragent_t *ta, td_thr_iter_f *callback,
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void *cbdata_p, td_thr_state_e state, int ti_pri,
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psaddr_t head, int fake_empty)
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psaddr_t head, bool fake_empty)
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{
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td_err_e err;
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psaddr_t next, ofs;
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@ -41,13 +42,13 @@ iterate_thread_list (td_thragent_t *ta, td_thr_iter_f *callback,
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if (next == 0 && fake_empty)
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{
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/* __pthread_initialize_minimal has not run.
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There is just the main thread to return. */
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td_thrhandle_t th;
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err = td_ta_map_lwp2thr (ta, ps_getpid (ta->ph), &th);
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if (err == TD_OK)
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err = callback (&th, cbdata_p) != 0 ? TD_DBERR : TD_OK;
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return err;
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/* __pthread_initialize_minimal has not run. There is just the main
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thread to return. We cannot rely on its thread register. They
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sometimes contain garbage that would confuse us, left by the
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kernel at exec. So if it looks like initialization is incomplete,
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we only fake a special descriptor for the initial thread. */
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td_thrhandle_t th = { ta, 0 };
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return callback (&th, cbdata_p) != 0 ? TD_DBERR : TD_OK;
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}
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/* Cache the offset from struct pthread to its list_t member. */
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@ -136,13 +137,15 @@ td_ta_thr_iter (const td_thragent_t *ta_arg, td_thr_iter_f *callback,
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err = DB_GET_SYMBOL (list, ta, __stack_user);
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if (err == TD_OK)
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err = iterate_thread_list (ta, callback, cbdata_p, state, ti_pri, list, 1);
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err = iterate_thread_list (ta, callback, cbdata_p, state, ti_pri,
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list, true);
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/* And the threads with stacks allocated by the implementation. */
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if (err == TD_OK)
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err = DB_GET_SYMBOL (list, ta, stack_used);
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if (err == TD_OK)
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err = iterate_thread_list (ta, callback, cbdata_p, state, ti_pri, list, 0);
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err = iterate_thread_list (ta, callback, cbdata_p, state, ti_pri,
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list, false);
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return err;
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}
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@ -1,5 +1,5 @@
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/* Enable event process-wide.
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Copyright (C) 1999, 2001, 2002, 2003 Free Software Foundation, Inc.
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Copyright (C) 1999, 2001, 2002, 2003, 2007 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
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@ -28,7 +28,25 @@ td_thr_event_enable (th, onoff)
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{
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LOG ("td_thr_event_enable");
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/* Write the new value into the thread data structure. */
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return DB_PUT_FIELD (th->th_ta_p, th->th_unique, pthread, report_events, 0,
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if (th->th_unique != 0)
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{
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/* Write the new value into the thread data structure. */
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td_err_e err = DB_PUT_FIELD (th->th_ta_p, th->th_unique, pthread,
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report_events, 0,
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(psaddr_t) 0 + (onoff != 0));
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if (err != TD_OK)
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return err;
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/* Just in case we are in the window between initializing __stack_user
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and copying from __nptl_initial_report_events, we set it too.
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It doesn't hurt to do this for non-initial threads, since it
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won't be consulted again anyway. It would take another fetch
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to get the tid and determine this isn't the initial thread,
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so just do it always. */
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}
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/* We are faking it for the initial thread before its thread
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descriptor is set up. */
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return DB_PUT_VALUE (th->th_ta_p, __nptl_initial_report_events, 0,
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(psaddr_t) 0 + (onoff != 0));
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}
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@ -1,5 +1,5 @@
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/* Get thread information.
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Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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Copyright (C) 1999,2000,2001,2002,2003,2007 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
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@ -32,35 +32,49 @@ td_thr_get_info (const td_thrhandle_t *th, td_thrinfo_t *infop)
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LOG ("td_thr_get_info");
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/* Copy the whole descriptor in once so we can access the several
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fields locally. Excess copying in one go is much better than
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multiple ps_pdread calls. */
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err = DB_GET_STRUCT (copy, th->th_ta_p, th->th_unique, pthread);
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if (err != TD_OK)
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return err;
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if (th->th_unique == 0)
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{
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/* Special case for the main thread before initialization. */
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copy = NULL;
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tls = 0;
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cancelhandling = 0;
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schedprio = 0;
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tid = 0;
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err = DB_GET_VALUE (report_events, th->th_ta_p,
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__nptl_initial_report_events, 0);
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}
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else
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{
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/* Copy the whole descriptor in once so we can access the several
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fields locally. Excess copying in one go is much better than
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multiple ps_pdread calls. */
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err = DB_GET_STRUCT (copy, th->th_ta_p, th->th_unique, pthread);
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if (err != TD_OK)
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return err;
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err = DB_GET_FIELD_ADDRESS (tls, th->th_ta_p, th->th_unique,
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pthread, specific, 0);
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if (err != TD_OK)
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return err;
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err = DB_GET_FIELD_ADDRESS (tls, th->th_ta_p, th->th_unique,
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pthread, specific, 0);
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if (err != TD_OK)
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return err;
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err = DB_GET_FIELD_LOCAL (schedpolicy, th->th_ta_p, copy, pthread,
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schedpolicy, 0);
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if (err != TD_OK)
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return err;
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err = DB_GET_FIELD_LOCAL (schedprio, th->th_ta_p, copy, pthread,
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schedparam_sched_priority, 0);
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if (err != TD_OK)
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return err;
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err = DB_GET_FIELD_LOCAL (tid, th->th_ta_p, copy, pthread, tid, 0);
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if (err != TD_OK)
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return err;
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err = DB_GET_FIELD_LOCAL (cancelhandling, th->th_ta_p, copy, pthread,
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cancelhandling, 0);
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if (err != TD_OK)
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return err;
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err = DB_GET_FIELD_LOCAL (report_events, th->th_ta_p, copy, pthread,
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report_events, 0);
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err = DB_GET_FIELD_LOCAL (schedpolicy, th->th_ta_p, copy, pthread,
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schedpolicy, 0);
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if (err != TD_OK)
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return err;
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err = DB_GET_FIELD_LOCAL (schedprio, th->th_ta_p, copy, pthread,
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schedparam_sched_priority, 0);
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if (err != TD_OK)
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return err;
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err = DB_GET_FIELD_LOCAL (tid, th->th_ta_p, copy, pthread, tid, 0);
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if (err != TD_OK)
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return err;
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err = DB_GET_FIELD_LOCAL (cancelhandling, th->th_ta_p, copy, pthread,
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cancelhandling, 0);
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if (err != TD_OK)
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return err;
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err = DB_GET_FIELD_LOCAL (report_events, th->th_ta_p, copy, pthread,
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report_events, 0);
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}
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if (err != TD_OK)
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return err;
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@ -87,9 +101,10 @@ td_thr_get_info (const td_thrhandle_t *th, td_thrinfo_t *infop)
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infop->ti_lid = tid == 0 ? ps_getpid (th->th_ta_p->ph) : (uintptr_t) tid;
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infop->ti_traceme = report_events != 0;
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err = DB_GET_FIELD_LOCAL (infop->ti_startfunc, th->th_ta_p, copy, pthread,
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start_routine, 0);
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if (err == TD_OK)
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if (copy != NULL)
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err = DB_GET_FIELD_LOCAL (infop->ti_startfunc, th->th_ta_p, copy, pthread,
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start_routine, 0);
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if (copy != NULL && err == TD_OK)
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{
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uint32_t idx;
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for (idx = 0; idx < TD_EVENTSIZE; ++idx)
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|
@ -1,5 +1,5 @@
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/* Get a thread's floating-point register set.
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Copyright (C) 1999, 2001, 2002, 2003 Free Software Foundation, Inc.
|
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Copyright (C) 1999, 2001, 2002, 2003, 2007 Free Software Foundation, Inc.
|
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
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@ -29,6 +29,11 @@ td_thr_getfpregs (const td_thrhandle_t *th, prfpregset_t *regset)
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LOG ("td_thr_getfpregs");
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if (th->th_unique == 0)
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/* Special case for the main thread before initialization. */
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return ps_lgetfpregs (th->th_ta_p->ph, ps_getpid (th->th_ta_p->ph),
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regset) != PS_OK ? TD_ERR : TD_OK;
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/* We have to get the state and the PID for this thread. */
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err = DB_GET_FIELD (cancelhandling, th->th_ta_p, th->th_unique, pthread,
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cancelhandling, 0);
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|
@ -1,5 +1,5 @@
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/* Get a thread's general register set.
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Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
|
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Copyright (C) 1999, 2000, 2001, 2002, 2003, 2007 Free Software Foundation, Inc.
|
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This file is part of the GNU C Library.
|
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Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
|
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@ -29,6 +29,11 @@ td_thr_getgregs (const td_thrhandle_t *th, prgregset_t regset)
|
||||
|
||||
LOG ("td_thr_getgregs");
|
||||
|
||||
if (th->th_unique == 0)
|
||||
/* Special case for the main thread before initialization. */
|
||||
return ps_lgetregs (th->th_ta_p->ph, ps_getpid (th->th_ta_p->ph),
|
||||
regset) != PS_OK ? TD_ERR : TD_OK;
|
||||
|
||||
/* We have to get the state and the PID for this thread. */
|
||||
err = DB_GET_FIELD (cancelhandling, th->th_ta_p, th->th_unique, pthread,
|
||||
cancelhandling, 0);
|
||||
|
@ -1,5 +1,5 @@
|
||||
/* Set a thread's floating-point register set.
|
||||
Copyright (C) 1999, 2001, 2002, 2003 Free Software Foundation, Inc.
|
||||
Copyright (C) 1999, 2001, 2002, 2003, 2007 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
|
||||
|
||||
@ -29,6 +29,11 @@ td_thr_setfpregs (const td_thrhandle_t *th, const prfpregset_t *fpregs)
|
||||
|
||||
LOG ("td_thr_setfpregs");
|
||||
|
||||
if (th->th_unique == 0)
|
||||
/* Special case for the main thread before initialization. */
|
||||
return ps_lsetfpregs (th->th_ta_p->ph, ps_getpid (th->th_ta_p->ph),
|
||||
fpregs) != PS_OK ? TD_ERR : TD_OK;
|
||||
|
||||
/* We have to get the state and the PID for this thread. */
|
||||
err = DB_GET_FIELD (cancelhandling, th->th_ta_p, th->th_unique, pthread,
|
||||
cancelhandling, 0);
|
||||
|
@ -1,5 +1,5 @@
|
||||
/* Set a thread's general register set.
|
||||
Copyright (C) 1999, 2001, 2002, 2003 Free Software Foundation, Inc.
|
||||
Copyright (C) 1999, 2001, 2002, 2003, 2007 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
|
||||
|
||||
@ -29,6 +29,11 @@ td_thr_setgregs (const td_thrhandle_t *th, prgregset_t gregs)
|
||||
|
||||
LOG ("td_thr_setgregs");
|
||||
|
||||
if (th->th_unique == 0)
|
||||
/* Special case for the main thread before initialization. */
|
||||
return ps_lsetregs (th->th_ta_p->ph, ps_getpid (th->th_ta_p->ph),
|
||||
gregs) != PS_OK ? TD_ERR : TD_OK;
|
||||
|
||||
/* We have to get the state and the PID for this thread. */
|
||||
err = DB_GET_FIELD (cancelhandling, th->th_ta_p, th->th_unique, pthread,
|
||||
cancelhandling, 0);
|
||||
|
@ -1,5 +1,5 @@
|
||||
/* Locate TLS data for a thread.
|
||||
Copyright (C) 2003, 2006 Free Software Foundation, Inc.
|
||||
Copyright (C) 2003, 2006, 2007 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
@ -30,8 +30,29 @@ td_thr_tlsbase (const td_thrhandle_t *th,
|
||||
if (modid < 1)
|
||||
return TD_NOTLS;
|
||||
|
||||
psaddr_t pd = th->th_unique;
|
||||
if (pd == 0)
|
||||
{
|
||||
/* This is the fake handle for the main thread before libpthread
|
||||
initialization. We are using 0 for its th_unique because we can't
|
||||
trust that its thread register has been initialized. But we need
|
||||
a real pointer to have any TLS access work. In case of dlopen'd
|
||||
libpthread, initialization might not be for quite some time. So
|
||||
try looking up the thread register now. Worst case, it's nonzero
|
||||
uninitialized garbage and we get bogus results for TLS access
|
||||
attempted too early. Tough. */
|
||||
|
||||
td_thrhandle_t main_th;
|
||||
err = __td_ta_lookup_th_unique (th->th_ta_p, ps_getpid (th->th_ta_p->ph),
|
||||
&main_th);
|
||||
if (err == 0)
|
||||
pd = main_th.th_unique;
|
||||
if (pd == 0)
|
||||
return TD_TLSDEFER;
|
||||
}
|
||||
|
||||
/* Get the DTV pointer from the thread descriptor. */
|
||||
err = DB_GET_FIELD (dtv, th->th_ta_p, th->th_unique, pthread, dtvp, 0);
|
||||
err = DB_GET_FIELD (dtv, th->th_ta_p, pd, pthread, dtvp, 0);
|
||||
if (err != TD_OK)
|
||||
return err;
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
/* Validate a thread handle.
|
||||
Copyright (C) 1999, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
|
||||
Copyright (C) 1999,2001,2002,2003,2004,2007 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
|
||||
|
||||
@ -75,16 +75,10 @@ td_thr_validate (const td_thrhandle_t *th)
|
||||
if (err == TD_OK)
|
||||
err = check_thread_list (th, list, &uninit);
|
||||
|
||||
if (err == TD_NOTHR && uninit)
|
||||
{
|
||||
/* __pthread_initialize_minimal has not run yet.
|
||||
But the main thread still has a valid ID. */
|
||||
td_thrhandle_t main_th;
|
||||
err = td_ta_map_lwp2thr (th->th_ta_p,
|
||||
ps_getpid (th->th_ta_p->ph), &main_th);
|
||||
if (err == TD_OK && th->th_unique != main_th.th_unique)
|
||||
err = TD_NOTHR;
|
||||
}
|
||||
if (err == TD_NOTHR && uninit && th->th_unique == 0)
|
||||
/* __pthread_initialize_minimal has not run yet.
|
||||
There is only the special case thread handle. */
|
||||
err = TD_OK;
|
||||
}
|
||||
|
||||
return err;
|
||||
|
@ -1,5 +1,5 @@
|
||||
/* Private header for thread debug library
|
||||
Copyright (C) 2003, 2004 Free Software Foundation, Inc.
|
||||
Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
@ -251,4 +251,7 @@ extern td_err_e _td_store_value_local (td_thragent_t *ta,
|
||||
extern td_err_e _td_check_sizeof (td_thragent_t *ta, uint32_t *sizep,
|
||||
int sizep_name) attribute_hidden;
|
||||
|
||||
extern td_err_e __td_ta_lookup_th_unique (const td_thragent_t *ta,
|
||||
lwpid_t lwpid, td_thrhandle_t *th);
|
||||
|
||||
#endif /* thread_dbP.h */
|
||||
|
Loading…
Reference in New Issue
Block a user