Hi Alan
I haven't really en through that code, but yes I have been using t and yes I'm
happy for that cleanup to occur. The joy of git is that the code history is
still here if needed.
One question i did have though – I remember my code being set up like a ring
buffer, and you saying yours
Just to check Alan, the mention of grep and all th linux centric paths listed
made me wonder how (if at all) this affects Windows builds?
Phil
Sent from my Windows 10 phone
From: Alan W. Irwin
Sent: 22 July 2017 10:00
To: Ole Streicher; Orion Poplawski; PLplot development list
Subject:
Hi Alan
Proof of concept was a little more than 20 or so lines
I'll pull out the code I started and check where is stands.
Phil
Sent from my Windows 10 phone
From: Alan W. Irwin
Sent: 15 July 2017 21:50
To: Phil Rosenberg; Ole Streicher
Cc: Hazen Babcock; andrewr...@users.sourceforge.net;
Hi Alan
Sorry, I still haven't had chance to look at your code (poorly 4 year old over
the weekend). But you are definitely correct to not use a sleep to avoid a
race. I think particularly in situations where the system is under strain all
bets are off regarding timings. And like you said, it's
>But that failure (one or both semaphores are not blocked with zero
>values) should be impossible because the fact is both semaphores are
>initialized in that expected (blocked) state (that check succeeded for
>the initial call to moveBytesReaderReversed on the wxPLViewer side),
>and at the end
I have absolutely no efficiency concerns. The cpu cycles will be totally
negligible compared to the time to copy the memory. To be honest I rarely
stress about efficiency. Premature optimisation is usually a bad thing – don't
forget that the compiler has the ability to totally optimise away
Hi Alan
It'll definitely be interesting to see the differences. I wasn't trying to put
you off, just hoping you can get a boost from the things that i learnt as I
went along. That was the first time I'd tried ipc locally, although I did some
one way network stuff years ago. It did turn out to
Hi Alan
Not exactly sure what you mean by complex? It is not always possible to send
all data, as the shared memory is finite size and therefore the data to be sent
may be bigger than the shared memory. The reading and writing is therefore set
up as a ring buffer, so when the writing gets to
Hi Alan
I'm not sure how exactly the two classes interact, but if the parameters for
the constructor will be the same every time you can pass them in as constant
values. I.e, I presume the size will be the same each time and you could use a
static member to hold a name that you increment after
Congratulations and well done for getting that out Alan.
Here’s to continuing to push PLplot to be as good as it can be.
Phil
Sent from my Windows 10 phone
From: Alan W. Irwin
Sent: 30 January 2017 01:22
To: PLplot development list
Subject: [Plplot-devel] PLplot-5.12.0 has been released so the
Hi Alan
Sorry for taking so long to reply. Feel free to go ahead and release.
Earlier this week I had a bit more of a look at the replot issue and I think
that in reality the current behaviour is fine for now, but can be sorted for
next release. Everything works providing plreplot is called
Thanks Alan, I'll review those emails.
I will check if the issue is related, but it shouldn't be a keypress issue as
I'm not using it in that way.
PS, I wasn't suggesting the commit was wrong. Just that I couldn't remember why
it was as it was.
Perhaps also, I could be using plreplot wrong. I
Hi Alan
I should be able to look at the plclear buffer issue over the weekend. Then
I'll start sorting the wxWidgets documentation.
Phil
Sent from my Windows 10 phone
From: Alan W. Irwin
Sent: 05 January 2017 21:51
To: Phil Rosenberg; Pedro Vicente; PLplot development list
Subject: The
That looks promising
To answer your questions Alan (sorry for top posting, but I'm on my phone)
1. Yes that is the expected output, although the window titles should be
different. But actually it may be nicer to at least use 2 different curves. An
easy change. What do you think?
2. Will do,
Hi All, but mostly aimed at Alan I guess
I found a bug today based on some of my code. I have some code that uses
wxWidgets then I was attempting to use plreplot to write to a file. But I was
getting just a black screen. After a first look I think the problem is the
plclear calls are not being
Hi Alan
I agree it would be good to look at this pre release. It's on my to do list for
asap.
Sent from my Windows 10 phone
From: Alan W. Irwin
Sent: 04 January 2017 20:37
To: Phil Rosenberg; Pedro Vicente; Laurent Berger; PLplot development list
Subject: Re: [Plplot-devel] legend and label
Hi Alan
I don't know enough about cmake and how it creates visual studio
projects/solutions to know what will work.
All I know is that cmake generates a visual studio solution, which when opened
in visual studio contains multiple projects, one for each target (library and
executable) and some
Hi Alan
Theose are wxWidgets commits from the wxWidgets repo. WxWidgets have made a
change which I presume has exposed a bug in our code (or maybe there is a bug
in their code, but I think that's less likely).
Phil
Sent from my Windows 10 phone
From: Alan W. Irwin
Sent: 29 December 2016 00:48
Hi Alan
I'm not sure if that would work. If I execute (I.e. Run or debug) that project,
would it run the example?
Sent from my Windows 10 phone
From: Alan W. Irwin
Sent: 29 December 2016 00:26
To: Phil Rosenberg; Pedro Vicente; Laurent Berger; PLplot development list
Subject: RE:
Hi Laurent
Thanks for this incite. It is good that they have included this functionality
as it will mean in the future I can simplify a lot of code in the driver. I
have a suspicion that I’m mistakenly switching from plplot y upwards
coordinates to wxWidgets y downwards coordinates twice, but
Hi Alan
The problem with building all is that it rebuilds all the examples. When using
static libs this means relinking them as well and the whole process takes a
few minutes, rather than the few seconds to build one example.
Phil
Sent from my Windows 10 phone
From: Alan W. Irwin
Sent: 28
Thanks Laurent
You are a few commits ahead of me I think so I'll update, just in case it makes
a difference. I use 64 bit, which I think is the same as you. Are you using
wxWidgets 3.1? I am using 3.0 I think, but I'll check.
Phil
Sent from my Windows 10 phone
From: Laurent Berger
Sent: 28
Hi Alan
Sorry for top posting, but I’m on my phone which doesn't seem to indent older
text so I think this is simpler.
A common scenario for me (I thought this may have been Laurent’s issue, but it
seems not) is that I make a change in the wxWidgets part of plplot, then in
visual studio I
Hi Laurent
I know you have said you have cleaned and you have rebuilt. However, there may
be a build tree dependency issue catching us out. Can you ensure you
specifically rebuild the wxPlviewer project by right clicking it and selecting
build in visual studio? If you just right click an
This is really brief, I think we are all getting a little overexcited here very
close to the release date.
This is a functionality reducing, backwards incompatible API change. I know for
one that it will not only cause build errors in some of my code, but because I
use wxPLplotwindow classes
What?
I haven't been able to keep up with all the emails as I have had family
commitments over the holiday period, but that's a very large change of the API
that needs some careful consideration. I can't grab the latest source right
now. But what has it changed to if it's no longer templated?
Hi Pedro
I hadn't realised you were accessing your machines remotely. I assumed that the
VMs were local. Although I was accessing mu ubuntu remotely to, but using the
cygwin x server. I'm not sure if the ubuntu bash on windows using xming counts
as remote. Maybe this is the cause of the
Hi Alan
It's great that these improvements have borne fruit.
Regarding the two slower examples, I don't think it is cut and dry that it is
the semaphores are the cause. It may be that for these cases where there are a
large number of elements the ring buffer is filling up so the main
Hi Pedro
It's great that you set that up. I would suggest that you post it to the
wxWidgets trac system too. The forum is great for advice on how we can change
things, and doublemax really knows what he’s talking about, but the wxWidgets
devs only use trac for dealing with bug reports. If it is
Sorry I have not been able to look at this today. I have had family things on.
Thanks for looking into that. I half suspected that might be the case. So after
everything I said about contracts with the Show function, it seems it is
already broken ☹
I suspect that actually this is a wxWidgets
Hi Pedro
The fact that the solution is currently broken does not help my argument here.
However, here is the reasoning. With the show solution this works
MyFrame *frame = new Frame();
frame->Show();
Plot(frame);
But the user may not want to show the frame immediately or may want to show and
Hi Pedro, Alan
Sorry. I guess I made a mistake in the new commit. It worked fine on my system
but I never saw the same problem you did in the first place. I will check for
obvious mistakes and if I can't see the cause then I'll revert the last commit.
Although this will have to wait until the
That's fine. I will leave things alone for now
Sent from my Windows 10 phone
From: Alan W. Irwin
Sent: 20 December 2016 10:19
To: Phil Rosenberg; Pedro Vicente; PLplot development list
Subject: RE: [Plplot-devel] New way to generate wxwidgets debug output
On 2016-12-20 08:55-
Just to concur with Alan to say thank you very much Pedro for your initial bug
report and your help with debugging and suggested fixes. I couldn't have sorted
it without your help.
And Alan the same to you. Thanks for all the help tracking down the delay issue.
I'm glad that between the three
I made and pushed the change last night to use urandom over random, but Pedro
is probably correct, the getrandom() function may be the best solution. I can
make that change later today.
Sent from my Windows 10 phone
From: Pedro Vicente
Sent: 20 December 2016 02:04
To: Alan W. Irwin; Phil
Hi Alan
I am on my commute home right now. But if you want to test if the random number
generator is the cause then find the Rand constructor – Rand::Rand() and
comment out everything, replacing it with a single line that sets the seed
(probably m_seed or something) to a fixed value, like 0.
Hi Alan, Pedro
Yes Alan, that is what I intended. Sorry, that doesn't compile. I was on my way
to bed when I sent the email and was doing it from memory.
I will try to find a moment today to fix this.
I'm not sure what your one line fix is. Feel free to elaborate. wxYield()
basically exits the
Hi Alan, Jim
I don't think the size impact of storing everything as a ucs4 string is a big
deal. Most text stored will be single character points. But we already have
overheads for storing the position, rotation, style, font, etc. So for a 1 byte
ascii character we probably already store 20 or
Hi Laurent
So those errors seem to be caused by unicode issues. The native windows
functions have ansi versions which accept 8bit strings and unicode versions
which accept 16 bit wide strings. There is also a generic form of each which
uses #ifdefs which call the ansi or unicode versions
Many thanks Alan for pushing this and getting the debug statements into the
code. You have confirmed that i was looking in the wrong place for the problem.
I was mulling things over this morning and wondered about the same thing as
you, some sort of memory leak with the shared memory. You have
Hi Mark
Thanks for the report. I'll have a look at your example over the weekend and
see if I can fix the issue.
Phil
Sent from my Windows 10 phone
From: Mark de Wever
Sent: 18 November 2016 11:06
To: plplot-dev
Subject: [Plplot-devel] [Bug] Plmap omits lines at the left hand side of themap
Hi Alan, Laurent
I can't say I have much to add. It wasn't obvious to me where the lag was last
time i looked, but I agree it is an issue
I haven't done much plplot work for some time, but when I can i will look at
this. If anyone has any suggestions I would be keen to hear.
Phil
Sent from
I was never very good with cmake, but the old findwxwidgets cmake module never
worked on windows for me, which is why we had our own. I thought I'd checked
things since we went back to the built in module, but perhaps it wasn't a clean
build tree. I'll check again tomorrow.
Phil
Sent from my
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