Date: Sun, 02 Jan 2011 04:59:14 -0600 From: Boris Zbarsky
bzbar...@mit.edu On 1/1/11 6:53 PM, Charles Pritchard wrote:
ArrayBuffer and Canvas use contiguous memory segments. You don't need a
complex GC pass to let those ones go.
Yes, you do. You can't let go of the canvas buffer without
On 1/2/11, Aryeh Gregor simetrical+...@gmail.com wrote:
Moreover, who says you're using a browser that puts different tabs in
different threads; that that browser would still work correctly if you
suspend a single thread and leave the others running; and that you
even know that it's possible
On 1/1/11 6:53 PM, Charles Pritchard wrote:
ArrayBuffer and Canvas use contiguous memory segments. You don't need a
complex GC pass to let those ones go.
Yes, you do. You can't let go of the canvas buffer without letting go
of the canvas rendering contexts and canvas elements referencing it.
On 1/1/11 2:39 PM, Charles Pritchard wrote:
lowmemory does not need to mean that the OS is experiencing a low
memory condition.
Uh... then what does it need to mean?
Tabbed browsing implementation:
Send a lowmemory event to hidden tabs listening (for lowmemory), that
have not been visible
On Sat, Jan 1, 2011 at 11:17 PM, Bjartur Thorlacius
svartma...@gmail.com wrote:
On 12/31/10, Ian Hickson i...@hixie.ch wrote:
Please don't use all my memory for your Web-based game. :-) I may just be
running it in the background while finding a video to watch, for example,
in which case I
On 1/2/11, timeless timel...@gmail.com wrote:
On Sat, Jan 1, 2011 at 11:17 PM, Bjartur Thorlacius
svartma...@gmail.com wrote:
On 12/31/10, Ian Hickson i...@hixie.ch wrote:
Please don't use all my memory for your Web-based game. :-) I may just be
running it in the background while finding a
On Sun, Jan 2, 2011 at 7:41 PM, Bjartur Thorlacius svartma...@gmail.com wrote:
Why wouldn't you suspend the process (i.e. put it to sleep by stopping it).
because the server may kill you when the network socket times out or
breaks. why should it waste resources on a non responsive client?
On Sun, Jan 2, 2011 at 4:27 PM, timeless timel...@gmail.com wrote:
On Sun, Jan 2, 2011 at 7:41 PM, Bjartur Thorlacius svartma...@gmail.com
wrote:
Why wouldn't you suspend the process (i.e. put it to sleep by stopping it).
because the server may kill you when the network socket times out or
On 1/1/2011 12:08 PM, whatwg-requ...@lists.whatwg.org wrote:
Date: Fri, 31 Dec 2010 22:01:42 -0600 From: Boris Zbarsky
bzbar...@mit.edu On 12/31/10 7:35 PM, Charles Pritchard wrote:
If I were to receive an event, letting me know a low memory condition
exists
There are various ways to try
On 12/31/10, Ian Hickson i...@hixie.ch wrote:
Please don't use all my memory for your Web-based game. :-) I may just be
running it in the background while finding a video to watch, for example,
in which case I really don't want the game using all my resources.
Why would you want to run a game
I'd like to be able to listen for them on the desktop as well.
You need to know a lot about the host system to know what low memory
even means. Does it mean allocations may start failing soon? Does it
mean we're deep into swap, causing serious performance issues but not
failed allocations?
On 1/1/2011 1:43 PM, Glenn Maynard wrote:
You need to know a lot about the host system to know what low memory
even means. Does it mean allocations may start failing soon? Does it
...
This definitely seems useful on mobile platforms, where memory is much
more limited, memory management is
On Sat, Jan 1, 2011 at 5:04 PM, Charles Pritchard ch...@jumis.com wrote:
The separation of Mobile and Desktop seems arbitrary, in terms of specs:
if it's useful on the mobile, why would it not be useful on the desktop?
It's the same concept, a memory warning.
I fully agree that no HTML spec
On Sat, Jan 1, 2011 at 2:04 PM, Charles Pritchard ch...@jumis.com wrote:
It's the same concept, a memory warning.
On Sat, Jan 1, 2011 at 3:39 PM, Charles Pritchardch...@jumis.com
wrote:
Here are some example implementations; it's up to the vendor, not the
spec.
Tabbed browsing
On 1/1/2011 4:07 PM, Glenn Maynard wrote:
For example, responding to being an idle tab by releasing resources is
the wrong thing to do if there's plenty of memory available. I have 8
GB of memory and Firefox rarely uses more than 512 MB. Don't make me
I stated, in the example, that it would
On Sat, Jan 1, 2011 at 7:35 PM, Ryosuke Niwa rn...@webkit.org wrote:
What I don't understand about this proposal is how web apps are supposed to
free memory. In my understanding, ES5 doesn't allow you to manually free
memory (unlike Objective-C), and it's up to GC implementor to decide how and
On 1/1/2011 4:48 PM, Glenn Maynard wrote:
On Sat, Jan 1, 2011 at 7:35 PM, Ryosuke Niwarn...@webkit.org wrote:
What I don't understand about this proposal is how web apps are supposed to
free memory. In my understanding, ES5 doesn't allow you to manually free
memory (unlike Objective-C), and
On 1/1/2011 4:07 PM, Glenn Maynard wrote:
On Sat, Jan 1, 2011 at 5:04 PM, Charles Pritchardch...@jumis.com wrote:
The separation of Mobile and Desktop seems arbitrary, in terms of specs:
if it's useful on the mobile, why would it not be useful on the desktop?
It's the same concept, a memory
On Sun, 02 Jan 2011 00:53:48 -, Charles Pritchard ch...@jumis.com
wrote:
ArrayBuffer and Canvas use contiguous memory segments. You don't need a
complex GC pass to let those ones go.
For my use cases, those are the two types I'm working with.
Keeping them around helps the speed of my
On 2011-01-02 03:27, Kornel Lesiński wrote:
On Sun, 02 Jan 2011 00:53:48 -, Charles Pritchard
ch...@jumis.com wrote:
ArrayBuffer and Canvas use contiguous memory segments. You don't need
a complex GC pass to let those ones go.
For my use cases, those are the two types I'm working with.
On Sat, Jan 1, 2011 at 9:52 PM, Roger Hågensen resca...@emsai.net wrote:
Charles, you initially said you where worried about this since you used undo
buffers.
Why not simply add undo buffers to the Canvas spec? That way the browser can
start tossing away the oldest undo buffers automatically
Regarding:
http://lists.whatwg.org/htdig.cgi/whatwg-whatwg.org/2010-December/029575.html
Web Applications may have wildly different use cases than hypertext
documents.
The issue at hand is attempting, in some part, to send a signal to the
DOM that a low
memory condition exists. This may not
On 12/31/10 7:35 PM, Charles Pritchard wrote:
If I were to receive an event, letting me know a low memory condition
exists
In many cases the only way a browser can determine that such a condition
exists is by trying to allocate memory and having the allocation fail.
At which point... it's
On Fri, 24 Sep 2010, Charles Pritchard wrote:
Do we have a route, or DOM events that signal when the device has a low
memory condition?
My computer is constantly running low in memory. Mozilla-apps
(thunderbird) start hiding unneeded icons; Chrome betas just go ahead
and crash the
Am 28.09.2010, 01:01 Uhr, schrieb timeless timel...@gmail.com:
tl;dr of my previous post: it's impossible to know how much memory is
available in the future.
How much memory you're currently using is something that /could/
probably be provided in the near future. *However*, there might be a
On 9/28/10, Rob Evans r...@mtn-i.com wrote:
All good points. I think as we have moved away from simple web pages and
really start to think about applications that are coded in js, many things
previously the exclusive domain of desktop apps are more and more desirable
for web apps.
Totally agree. +1!
-Original Message-
From: whatwg-boun...@lists.whatwg.org
[mailto:whatwg-boun...@lists.whatwg.org] On Behalf Of Charles Pritchard
Sent: 24 September 2010 21:57
To: whatwg@lists.whatwg.org
Subject: [whatwg] Low Memory Event
This is likely mentioned in the Device API
what exactly do you intend to do if you get such a signal?
In general, this is mostly a user problem. There are two basic cases:
1. user has one constrained device with one browser accessing a single
web site (yours) with no other open applications.
2. user has a device with multiple open windows
I think one of the most useful things that a js script could know is how
much memory is available and how much the current page is using. I'm writing
a js game engine and knowing how much I can safely site in memory would be
incredibly useful!
That way I can do everything to maximize engine
tl;dr of my previous post: it's impossible to know how much memory is
available in the future.
How much memory you're currently using is something that /could/
probably be provided in the near future. *However*, there might be a
concern that this could be abused by attackers trying to figure out
All good points. I think as we have moved away from simple web pages and
really start to think about applications that are coded in js, many things
previously the exclusive domain of desktop apps are more and more desirable
for web apps.
I also think that a web page should be able to request
On 9/27/10 3:30 PM, Rob Evans wrote:
I think one of the most useful things that a js script could know is
how much memory is available and how much the current page is using.
I'm writing a js game engine and knowing how much I can safely site in
memory would be incredibly useful!
On 27 Sep
Indeed, I think to start with this would be very useful. Even if no other
info is presented, it would certainly help to mitigate any memory issues as
much as possible.
If nothing else the running script could act to reduce memory usage.
On 28 Sep 2010 00:44, Charles Pritchard ch...@jumis.com
This is likely mentioned in the Device API specs, or somewhere around
there at the W3C:
Do we have a route, or DOM events that signal when the device has a low
memory condition?
My computer is constantly running low in memory. Mozilla-apps
(thunderbird) start hiding
unneeded icons; Chrome
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