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2004-05-27 Roland McGrath <roland@redhat.com>

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* td_thr_validate.c: When we find no threads and the inferior appears
	uninitialized, validate the main thread as a special case.
This commit is contained in:
Roland McGrath
2004-06-01 21:42:02 +00:00
parent fbf86ddab2
commit 090addb473
1 changed files with 21 additions and 6 deletions
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25
nptl_db/td_thr_validate.c
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@@ -1,5 +1,5 @@
/* Validate a thread handle. /* Validate a thread handle.
Copyright (C) 1999, 2001, 2002, 2003 Free Software Foundation, Inc. Copyright (C) 1999, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 1999. Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
@@ -19,10 +19,10 @@
02111-1307 USA. */ 02111-1307 USA. */
#include "thread_dbP.h" #include "thread_dbP.h"
#include <stdbool.h>
static td_err_e static td_err_e
check_thread_list (const td_thrhandle_t *th, psaddr_t head) check_thread_list (const td_thrhandle_t *th, psaddr_t head, bool *uninit)
{ {
td_err_e err; td_err_e err;
psaddr_t next, ofs; psaddr_t next, ofs;
@@ -31,7 +31,10 @@ check_thread_list (const td_thrhandle_t *th, psaddr_t head)
if (err == TD_OK) if (err == TD_OK)
{ {
if (next == 0) if (next == 0)
{
*uninit = true;
return TD_NOTHR; return TD_NOTHR;
}
err = DB_GET_FIELD_ADDRESS (ofs, th->th_ta_p, 0, pthread, list, 0); err = DB_GET_FIELD_ADDRESS (ofs, th->th_ta_p, 0, pthread, list, 0);
} }
@@ -59,9 +62,10 @@ td_thr_validate (const td_thrhandle_t *th)
LOG ("td_thr_validate"); LOG ("td_thr_validate");
/* First check the list with threads using user allocated stacks. */ /* First check the list with threads using user allocated stacks. */
bool uninit = false;
err = DB_GET_SYMBOL (list, th->th_ta_p, __stack_user); err = DB_GET_SYMBOL (list, th->th_ta_p, __stack_user);
if (err == TD_OK) if (err == TD_OK)
err = check_thread_list (th, list); err = check_thread_list (th, list, &uninit);
/* If our thread is not on this list search the list with stack /* If our thread is not on this list search the list with stack
using implementation allocated stacks. */ using implementation allocated stacks. */
@@ -69,7 +73,18 @@ td_thr_validate (const td_thrhandle_t *th)
{ {
err = DB_GET_SYMBOL (list, th->th_ta_p, stack_used); err = DB_GET_SYMBOL (list, th->th_ta_p, stack_used);
if (err == TD_OK) if (err == TD_OK)
err = check_thread_list (th, list); 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;
}
} }
return err; return err;