public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug libstdc++/24693]  New: Deque improvements
@ 2005-11-06 10:42 pcarlini at suse dot de
  2005-11-08 17:13 ` [Bug libstdc++/24693] " pinskia at gcc dot gnu dot org
                   ` (2 more replies)
  0 siblings, 3 replies; 5+ messages in thread
From: pcarlini at suse dot de @ 2005-11-06 10:42 UTC (permalink / raw)
  To: gcc-bugs

This is to track this issue:

  http://gcc.gnu.org/ml/libstdc++/2005-11/msg00031.html

A first part, about _M_erase_at_end/_M_erase_at_begin, should be doable
relatively
quickly.


-- 
           Summary: Deque improvements
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pcarlini at suse dot de


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24693


^ permalink raw reply	[flat|nested] 5+ messages in thread
* [Bug libstdc++/24693] Deque improvements
  2005-11-06 10:42 [Bug libstdc++/24693] New: Deque improvements pcarlini at suse dot de
@ 2005-11-08 17:13 ` pinskia at gcc dot gnu dot org
  2005-11-25 23:31 ` pcarlini at suse dot de
  2005-12-05 18:01 ` pcarlini at suse dot de
  2 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-11-08 17:13 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #1 from pinskia at gcc dot gnu dot org  2005-11-08 17:13 -------
Confirmed.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-11-08 17:13:51
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24693


^ permalink raw reply	[flat|nested] 5+ messages in thread
* [Bug libstdc++/24693] Deque improvements
  2005-11-06 10:42 [Bug libstdc++/24693] New: Deque improvements pcarlini at suse dot de
  2005-11-08 17:13 ` [Bug libstdc++/24693] " pinskia at gcc dot gnu dot org
@ 2005-11-25 23:31 ` pcarlini at suse dot de
  2005-12-05 18:01 ` pcarlini at suse dot de
  2 siblings, 0 replies; 5+ messages in thread
From: pcarlini at suse dot de @ 2005-11-25 23:31 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #2 from pcarlini at suse dot de  2005-11-25 23:31 -------
More interesting work to do:

  http://gcc.gnu.org/ml/libstdc++/2005-11/msg00241.html





-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24693


^ permalink raw reply	[flat|nested] 5+ messages in thread
* [Bug libstdc++/24693] Deque improvements
  2005-11-06 10:42 [Bug libstdc++/24693] New: Deque improvements pcarlini at suse dot de
  2005-11-08 17:13 ` [Bug libstdc++/24693] " pinskia at gcc dot gnu dot org
  2005-11-25 23:31 ` pcarlini at suse dot de
@ 2005-12-05 18:01 ` pcarlini at suse dot de
  2 siblings, 0 replies; 5+ messages in thread
From: pcarlini at suse dot de @ 2005-12-05 18:01 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #3 from pcarlini at suse dot de  2005-12-05 18:01 -------
This part is done:

  http://gcc.gnu.org/ml/libstdc++/2005-11/msg00240.html

can also go in mainline.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24693


^ permalink raw reply	[flat|nested] 5+ messages in thread
* [Bug libstdc++/24693] Deque improvements
       [not found] <bug-24693-4@http.gcc.gnu.org/bugzilla/>
@ 2014-09-23 20:03 ` redi at gcc dot gnu.org
  0 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2014-09-23 20:03 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24693

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Created attachment 33542
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33542&action=edit
Patch to cache a free node.

(In reply to Paolo Carlini from comment #2)
> More interesting work to do:
> 
>   http://gcc.gnu.org/ml/libstdc++/2005-11/msg00241.html

Here's a proof of concept to prevent repeated reallocations for this case:

while (a long time)
{
     dq.push_front(t);
     ...
     dq.pop_back();
}

A single free node is cached in _M_map[-1], so there's no change to the layout
of the class.


^ permalink raw reply	[flat|nested] 5+ messages in thread
end of thread, other threads:[~2014-09-23 20:03 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2005-11-06 10:42 [Bug libstdc++/24693] New: Deque improvements pcarlini at suse dot de
2005-11-08 17:13 ` [Bug libstdc++/24693] " pinskia at gcc dot gnu dot org
2005-11-25 23:31 ` pcarlini at suse dot de
2005-12-05 18:01 ` pcarlini at suse dot de
     [not found] <bug-24693-4@http.gcc.gnu.org/bugzilla/>
2014-09-23 20:03 ` redi at gcc dot gnu.org

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).