[PATCH] improved error message

[Michael Snyder <msnyder@to-limbo.toronto.redhat.com>]

There are like five places in thread-db.c that all give the same
error message.  This just adds the function name, so you have a
chance of figuring out where the error occurred.

2002-12-13  Michael Snyder  <msnyder@to-limbo.toronto.redhat.com>

	* thread-db.c (thread_from_lwp): Uniquify error msg.
	(lwp_from_thread): Ditto.
	(check_event): Ditto.
	(find_new_threads_callback): Ditto.
	(thread_db_pid_to_str): Ditto.

Index: thread-db.c
===================================================================
RCS file: /cvs/src/src/gdb/thread-db.c,v
retrieving revision 1.25
diff -p -r1.25 thread-db.c
*** thread-db.c	23 Nov 2002 01:34:43 -0000	1.25
--- thread-db.c	13 Dec 2002 23:20:49 -0000
*************** thread_from_lwp (ptid_t ptid)
*** 250,256 ****
  
    err = td_thr_get_info_p (&th, &ti);
    if (err != TD_OK)
!     error ("Cannot get thread info: %s", thread_db_err_str (err));
  
    return BUILD_THREAD (ti.ti_tid, GET_PID (ptid));
  }
--- 250,257 ----
  
    err = td_thr_get_info_p (&th, &ti);
    if (err != TD_OK)
!     error ("thread_from_lwp: cannot get thread info: %s", 
! 	   thread_db_err_str (err));
  
    return BUILD_THREAD (ti.ti_tid, GET_PID (ptid));
  }
*************** lwp_from_thread (ptid_t ptid)
*** 272,278 ****
  
    err = td_thr_get_info_p (&th, &ti);
    if (err != TD_OK)
!     error ("Cannot get thread info: %s", thread_db_err_str (err));
  
    return BUILD_LWP (ti.ti_lid, GET_PID (ptid));
  }
--- 273,280 ----
  
    err = td_thr_get_info_p (&th, &ti);
    if (err != TD_OK)
!     error ("lwp_from_thread: cannot get thread info: %s", 
! 	   thread_db_err_str (err));
  
    return BUILD_LWP (ti.ti_lid, GET_PID (ptid));
  }
*************** check_event (ptid_t ptid)
*** 685,691 ****
  
    err = td_thr_get_info_p (msg.th_p, &ti);
    if (err != TD_OK)
!     error ("Cannot get thread info: %s", thread_db_err_str (err));
  
    ptid = BUILD_THREAD (ti.ti_tid, GET_PID (ptid));
  
--- 687,694 ----
  
    err = td_thr_get_info_p (msg.th_p, &ti);
    if (err != TD_OK)
!     error ("check_event: cannot get thread info: %s", 
! 	   thread_db_err_str (err));
  
    ptid = BUILD_THREAD (ti.ti_tid, GET_PID (ptid));
  
*************** find_new_threads_callback (const td_thrh
*** 950,956 ****
  
    err = td_thr_get_info_p (th_p, &ti);
    if (err != TD_OK)
!     error ("Cannot get thread info: %s", thread_db_err_str (err));
  
    if (ti.ti_state == TD_THR_UNKNOWN || ti.ti_state == TD_THR_ZOMBIE)
      return 0;			/* A zombie -- ignore.  */
--- 953,960 ----
  
    err = td_thr_get_info_p (th_p, &ti);
    if (err != TD_OK)
!     error ("find_new_threads_callback: cannot get thread info: %s", 
! 	   thread_db_err_str (err));
  
    if (ti.ti_state == TD_THR_UNKNOWN || ti.ti_state == TD_THR_ZOMBIE)
      return 0;			/* A zombie -- ignore.  */
*************** thread_db_pid_to_str (ptid_t ptid)
*** 993,999 ****
  
        err = td_thr_get_info_p (&th, &ti);
        if (err != TD_OK)
! 	error ("Cannot get thread info for thread %ld: %s",
  	       (long) GET_THREAD (ptid), thread_db_err_str (err));
  
        if (ti.ti_state == TD_THR_ACTIVE && ti.ti_lid != 0)
--- 997,1003 ----
  
        err = td_thr_get_info_p (&th, &ti);
        if (err != TD_OK)
! 	error ("thread_db_pid_to_str: cannot get thread info for %ld: %s",
  	       (long) GET_THREAD (ptid), thread_db_err_str (err));
  
        if (ti.ti_state == TD_THR_ACTIVE && ti.ti_lid != 0)