[fpc-pascal] national support
I give additional details. I write programs for mathematical linguistics. Especially program for frequency dictionary of chosen text. I write text to the editor. The text is in Czech. It displays correctly in editor window , i.e. with diacritics. Then follows transformation into words. In program for frequency diactionary, which contains binary search I have usual read and write statements. When I send the result to the printer with write it is displayed incorrectly on the print output – the diacritics. I am working under Windows |X|P. What other details should I give for somebody to give me advice. Martin Fris -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Friš Martin Mgr Sent: Monday, July 10, 2006 2:21 PM To: fpc-pascal@lists.freepascal.org Subject: [fpc-pascal] national support I am enthusiastic user of Free Pascal. I want ask a question, if there in Free Pascal exist the support for national environment. In czech there are letters with diacritics. They are not displayed correctly on the screen and on the printer. In Windows there is code page 1250 for these signs. Is there something in Free pascal? Martin Fris ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Compiling the compiler
Andreas Berger wrote: > I am using the v20 base compiler The only supported bootstrapping compiler is the last release compiler, i.e. 2.0.2. > with the v21 source. It should create a > v21 compiler. > > I get the same error compiling under DOS, Win98 and Win2K > > Regards, Andreas > > Lee, John wrote: >> This is a known error - I get it too - but I only get when using the >> v2.1.1 compiler to start make. Do you get it when starting with the >> v2.0.2 release compiler released too? What about trying a snapshot of >> v20 compiler eg base_go32_v20.zip or similar. >> >> You can get more info with "opt=-va" on CL - If there is any more >> useful info in that send the lines to us. >> What system are you using for these makes? Dos? Win9x? >> >>> I have a problem compiling the compiler. After a lot of compilation >>> it attempts to compile pp.pas and I get the following error: >>> pp.pas(213,1) Error: Entrypoint start not defined. >>> >>> Regards, >>> Andreas >>> >>> > ___ > fpc-pascal maillist - fpc-pascal@lists.freepascal.org > http://lists.freepascal.org/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] national support
On Wed, 26 Jul 2006, Friš Martin Mgr wrote: > I give additional details. I write programs for mathematical linguistics. > Especially program for frequency dictionary of chosen text. > I write text to the editor. The text is in Czech. It displays correctly in > editor window , > i.e. with diacritics. Then follows transformation into words. In program for > frequency > diactionary, which contains binary search I have usual read and write > statements. > When I send the result to the printer with write it is displayed incorrectly > on the > print output - the diacritics. I am working under Windows |X|P. You cannot do that; The screen is in codepage 1250 (or 1251), but the codepage of the printer is most likely 850 or so (whatever plain ascii is). What you can try to do is to use the windows AnsiToOEMChar routine to convert the windows codepage to something that the printer understands. Michael.___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
On Monday 17 July 2006 19:12, Florian Klaempfl wrote: > I started also a wiki page about it > http://www.freepascal.org/wiki/index.php/OpenMP_support where ideas > can be written down and shared. Well, I just added some stuff there, yesterday. It's far from being complete yet (it just covers a basic "parallel" construct), nor is it really thought through yet, but well, it might be a start; something to begin with. Any suggestions are welcome, of course. Due to the fact, that the OpenMP specification is neither the easiest one to read or understand, and it's not particularly tiny, neither, I don't want to put hours and hours of then wasted effort into this, if everyone here thinks that this idea is total crap. And yes, I admit, I like code being a little bit more verbose. :) Vinzent. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] Apache processing cgi requests
For all those Apache and CGI gurus...
[This might be off-topic]
I have written a CGI app for my client that decrypts a Macromedia
Flash files (*.swf) to a set path and name ("/flash/movie.swf"), I
then generate a html file to view that file, and the client (web
browser) gets served. The average *.swf file size is around 100Kb.
This CGI app might serve around 30-40 people simultaneously at peak
times. In our testing, I would have thought that even though all
30-40 people are viewing different *.swf files, some might get served
the wrong file (due to the decrypted file always having a constant
name). Our testing proved otherwise, we always received the correct
swf movie?
This brings me to my question. How does Apache handle CGI requests?
Does it queue them and serve them (including all resources: images,
swf files, etc) one at a time or process them all at the same time?
Note: For the release version, I changed the decrypted file to use a
GUID Session ID in the output name - just to be sure there is no
potential problems!
I am using Apache 2 with the MPM worker on a Linux box. The worker MPM
provides a threaded implementation for Apache2.
Regards,
Graeme.
--
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Re: [fpc-pascal] Apache processing cgi requests
On Wed, 26 Jul 2006, Graeme Geldenhuys wrote:
> For all those Apache and CGI gurus...
>
> [This might be off-topic]
>
> I have written a CGI app for my client that decrypts a Macromedia
> Flash files (*.swf) to a set path and name ("/flash/movie.swf"), I
> then generate a html file to view that file, and the client (web
> browser) gets served. The average *.swf file size is around 100Kb.
>
> This CGI app might serve around 30-40 people simultaneously at peak
> times. In our testing, I would have thought that even though all
> 30-40 people are viewing different *.swf files, some might get served
> the wrong file (due to the decrypted file always having a constant
> name). Our testing proved otherwise, we always received the correct
> swf movie?
>
> This brings me to my question. How does Apache handle CGI requests?
> Does it queue them and serve them (including all resources: images,
> swf files, etc) one at a time or process them all at the same time?
They are processed at the same time. Apache works threaded, so multiple
versions of your CGI script could be running at the same time. You could
simply have used the GetTempFileName function from SysUtils to avoid
concurrency problems. Although using a GUID as a filename is just as good.
Michael.
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Re: [fpc-pascal] Common OpenMP syntax?
Vinzent Hoefler wrote: > Well, I just added some stuff there, yesterday. It's far from being > complete yet (it just covers a basic "parallel" construct), nor is it > really thought through yet, but well, it might be a start; something to > begin with. > > Any suggestions are welcome, of course. Does parallel mean all the statements in the block can be executed in parallel, or that multiple copies of the block of statements can be started in parallel ? Micha ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Apache processing cgi requests
On 7/26/06, Michael Van Canneyt <[EMAIL PROTECTED]> wrote: They are processed at the same time. Apache works threaded, so multiple versions of your CGI script could be running at the same time. You could simply have used the GetTempFileName function from SysUtils to avoid concurrency problems. Although using a GUID as a filename is just as good. Michael. So I guess it was pure luck that we didn't pickup any issues. Thanks for your quick response! Regards, Graeme. -- There's no place like 127.0.0.1 ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
On Wednesday 26 July 2006 08:17, Micha Nelissen wrote: > Vinzent Hoefler wrote: > > Well, I just added some stuff there, yesterday. It's far from being > > complete yet (it just covers a basic "parallel" construct), nor is > > it really thought through yet, but well, it might be a start; > > something to begin with. > > > > Any suggestions are welcome, of course. > > Does parallel mean all the statements in the block can be executed in > parallel, or that multiple copies of the block of statements can be > started in parallel ? The latter. Vinzent. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
On Wed, 26 Jul 2006, Vinzent Hoefler wrote: > On Wednesday 26 July 2006 08:17, Micha Nelissen wrote: > > Vinzent Hoefler wrote: > > > Well, I just added some stuff there, yesterday. It's far from being > > > complete yet (it just covers a basic "parallel" construct), nor is > > > it really thought through yet, but well, it might be a start; > > > something to begin with. > > > > > > Any suggestions are welcome, of course. > > > > Does parallel mean all the statements in the block can be executed in > > parallel, or that multiple copies of the block of statements can be > > started in parallel ? > > The latter. Which is why I think that it's better to have them as local functions, instead of having to introduce a lot of new functions. Local functions are very pascal-ish. C doesn't have it, which is why they can't use it. Let's use the language features to their full extent. Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
Vinzent Hoefler wrote: > On Wednesday 26 July 2006 08:17, Micha Nelissen wrote: >> Does parallel mean all the statements in the block can be executed in >> parallel, or that multiple copies of the block of statements can be >> started in parallel ? > > The latter. Strange. How many copies ? ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
On Wednesday 26 July 2006 09:07, Micha Nelissen wrote: > Vinzent Hoefler wrote: > > On Wednesday 26 July 2006 08:17, Micha Nelissen wrote: > >> Does parallel mean all the statements in the block can be executed > >> in parallel, or that multiple copies of the block of statements > >> can be started in parallel ? > > > > The latter. > > Strange. That somehow applies to the whole original specification. :) > How many copies ? Omp.Get_Num_Threads(), AFAICS. Vinzent. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
Micha Nelissen schreef: Vinzent Hoefler wrote: On Wednesday 26 July 2006 08:17, Micha Nelissen wrote: Does parallel mean all the statements in the block can be executed in parallel, or that multiple copies of the block of statements can be started in parallel ? The latter. Strange. How many copies ? Looking at the example, I would say as many copies as there are threads: OMP.Get_Thread_Num Vincent ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
Vinzent Hoefler wrote: > On Wednesday 26 July 2006 09:07, Micha Nelissen wrote: >> How many copies ? > > Omp.Get_Num_Threads(), AFAICS. Ah the number of threads is determined by the RTL, and any parallel block must be written flexible, so that it can work for any given number of threads ? Micha ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
On Wednesday 26 July 2006 09:00, Michael Van Canneyt wrote: > On Wed, 26 Jul 2006, Vinzent Hoefler wrote: > > On Wednesday 26 July 2006 08:17, Micha Nelissen wrote: > > > Vinzent Hoefler wrote: > > > > Well, I just added some stuff there, yesterday. It's far from > > > > being complete yet (it just covers a basic "parallel" > > > > construct), nor is it really thought through yet, but well, it > > > > might be a start; something to begin with. > > > > > > > > Any suggestions are welcome, of course. > > > > > > Does parallel mean all the statements in the block can be > > > executed in parallel, or that multiple copies of the block of > > > statements can be started in parallel ? > > > > The latter. > > Which is why I think that it's better to have them as local > functions, instead of having to introduce a lot of new functions. Hey, it's only *one* new keyword yet. :) Admitted, local blocks are more Adaish, but with this approach, I was trying to avoid introducing a lot more keywords. There still probably will be some, because there are more constructs like "barrier", "workshare" (which I didn't fully understand yet) and "section". And well, such blocks are already known in Object Pascal. Just look at them as in object declarations the public/protected/private modifiers. > Local functions are very pascal-ish. C doesn't have it, which is why > they can't use it. Let's use the language features to their full > extent. Yes. I agree with that. The problem is that there are more "variable" types than just shared and private (like "firstprivate"), so it might prove to be quite difficult to do that if you only have local functions. I just didn't come to that part yet. I'll probably update the WiKi this evening/night (can't do that from work, where freepascal.org still times out). Vinzent. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
Michael Van Canneyt wrote:
Which is why I think that it's better to have them as local functions,
instead of having to introduce a lot of new functions.
Local functions are very pascal-ish. C doesn't have it, which is why they can't
use it.
Let's use the language features to their full extent.
*procedure* SubDomain (*var* x : *array of* Float;
istart : Integer;
ipoints : Integer)
*var*
i : Integer;
*begin*
*for* i := 0 *to* ipoints - 1 *do*
x[istart + i] := 123.456;
*end* /{SubDomain}/;
*procedure* Sub (*var* x : *array of* Float);
/// Variables declared here should have /|*shared*|/ context./
/// This would include the function's parameters then.../
*procedure* SubTask(*var* x : *array of* Float);
*var*
/// Variables declared here have /|*private*|/ context./
iam : Integer;
nt : Integer;
ipoints : Integer;
*parallel*
iam := OMP.Get_Thread_Num; /// OMP library calls./
nt := OMP.Get_Num_Threads;
ipoints := Length (x) *div* nt; /// size of partition/
istart := iam * ipoints; /// starting array index/
*if* iam = Pred (nt) *then*
ipoints := Length (x) - istart; /// last thread may do more/
SubDomain (x, istart, ipoints);
*end*;
*begin*
SubTask(x);
*end* /{Sub}/;
*var*
arr = *array*[0 .. ] *of* Float;
*begin* / // Main program/
Sub (arr);
*end*.
--
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Re: [fpc-pascal] Common OpenMP syntax?
Steve Williams wrote:
*begin*
SubTask(x);
*end* /{Sub}/;
*var*
arr = *array*[0 .. ] *of* Float;
*begin* / // Main program/
Sub (arr);
*end*.
Damn Thunderbird.
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This message and its attachments may contain legally privileged or confidential
information. This message is intended for the use of the individual or entity
to which it is addressed. If you are not the addressee indicated in this
message, or the employee or agent responsible for delivering the message to the
intended recipient, you may not copy or deliver this message or its attachments
to anyone. Rather, you should permanently delete this message and its
attachments and kindly notify the sender by reply e-mail. Any content of this
message and its attachments, which does not relate to the official business of
the sending company must be taken not to have been sent or endorsed by the
sending company or any of its related entities. No warranty is made that the
e-mail or attachment(s) are free from computer virus or other defect.
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Re: [fpc-pascal] Common OpenMP syntax?
On Wednesday 26 July 2006 09:25, Micha Nelissen wrote: > Vinzent Hoefler wrote: > > On Wednesday 26 July 2006 09:07, Micha Nelissen wrote: > >> How many copies ? > > > > Omp.Get_Num_Threads(), AFAICS. > > Ah the number of threads is determined by the RTL, and any parallel > block must be written flexible, so that it can work for any given > number of threads ? Yes and no. I think, there are constructs to set a specific number of threads. And as I tried to say, the specification is quite large. If not to say even convoluted. I've seen easier to read stuff recently. Vinzent. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Compiling the compiler
Florian Klaempfl wrote: Andreas Berger wrote: I am using the v20 base compiler The only supported bootstrapping compiler is the last release compiler, i.e. 2.0.2. That is what I am using. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
Michael Van Canneyt schreef: On Wed, 26 Jul 2006, Vinzent Hoefler wrote: On Wednesday 26 July 2006 08:17, Micha Nelissen wrote: Vinzent Hoefler wrote: Well, I just added some stuff there, yesterday. It's far from being complete yet (it just covers a basic "parallel" construct), nor is it really thought through yet, but well, it might be a start; something to begin with. Any suggestions are welcome, of course. Does parallel mean all the statements in the block can be executed in parallel, or that multiple copies of the block of statements can be started in parallel ? The latter. Which is why I think that it's better to have them as local functions, instead of having to introduce a lot of new functions. Local functions are very pascal-ish. C doesn't have it, which is why they can't use it. Let's use the language features to their full extent. I added an example with nested procedures. Vincent ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
Michael Van Canneyt wrote: >> The latter. > > Which is why I think that it's better to have them as local functions, > instead of having to introduce a lot of new functions. There is no real reason to restrict 'parallel' to local functions, is there ? Micha ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
On Wednesday 26 July 2006 09:28, Steve Williams wrote:
> Steve Williams wrote:
> > *begin*
> > SubTask(x);
> > *end* /{Sub}/;
> >
> > *var*
> > arr = *array*[0 .. ] *of* Float;
> > *begin* / // Main program/
> > Sub (arr);
> > *end*.
>
> Damn Thunderbird.
Well, it tried to mimic my syntax highlighting. :) Apart from that, your
change is quite nice, yes. That's what Michael meant, I guess.
Vinzent.
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Re: [fpc-pascal] Common OpenMP syntax?
On Wed, 26 Jul 2006, Micha Nelissen wrote: > Michael Van Canneyt wrote: > >> The latter. > > > > Which is why I think that it's better to have them as local functions, > > instead of having to introduce a lot of new functions. > > There is no real reason to restrict 'parallel' to local functions, is > there ? No, but I used that because in the example you make use of variables defined in the local function, but also in the parent function. It seems obvious to me that a global function can be called in parallel at any time. The compiler can perfectly detect whether a global function writes to variables outside it's own scope, in which case it's probably a no-no to paralellize the function. The programmer could help there by adding the parallel keyword indicating that the programmer knows it is safe to parallelize it. For local functions it is less obvious, there the compiler could use some help in most cases... Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
On Wednesday 26 July 2006 09:46, Michael Van Canneyt wrote: > It seems obvious to me that a global function can be called in > parallel at any time. The compiler can perfectly detect whether a > global function writes to variables outside it's own scope, in which > case it's probably a no-no to paralellize the function. Hey, you're trying to put more burden on the compiler here as the spec even allows, I'd say. Don't go on or you'll end up with the requirement for compile time dead-lock detection. :) Vinzent. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
On Wed, 26 Jul 2006, Vinzent Hoefler wrote: > On Wednesday 26 July 2006 09:46, Michael Van Canneyt wrote: > > > It seems obvious to me that a global function can be called in > > parallel at any time. The compiler can perfectly detect whether a > > global function writes to variables outside it's own scope, in which > > case it's probably a no-no to paralellize the function. > > Hey, you're trying to put more burden on the compiler here as the spec > even allows, I'd say. > > Don't go on or you'll end up with the requirement for compile time > dead-lock detection. :) Well, my statement is moderate in the sense that the compiler does this anyway already (see the hints/warnings about unused params/vars); let's use this information as much as we can. To avoid more difficult detections such as possible dead-locks, I would let the programmer add some keywords... Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Compiling the compiler
Andreas Berger wrote: > Vincent Snijders wrote: >> Andreas Berger schreef: >>> Andreas Berger wrote: I have a problem compiling the compiler. After a lot of compilation it attempts to compile pp.pas and I get the following error: pp.pas(213,1) Error: Entrypoint start not defined. >>> I downloaded todays snapshot and had the same problem. Then I >>> compiled using "make all" + "make install" instead of "make cycle" >>> and it worked. Is this correct? What does "make cycle" do exactly? >> >> There is at least one difference. >> If you do make cycle in the compiler directory, the fpc.cfg file is >> used. >> If you do make all or make compiler_cycle in the fpc source directory >> (that contains a compiler subdirectory), then no fpc.cfg file is used. >> >> So maybe you should try make cycle OPT="-n" >> > Sorry, it gave the same error. I assume you're compiling from trunk sources, right? Then we probably have some bug in trunk compiler (binary writer/internal linker?). There's a parameter for forcing external linker (in trunk compiler, not 2.0.2), you can try that. I can have a look at it later, but probably not before 2.0.4 is out. Tomas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] national support
Fria Martin Mgr wrote: > I give additional details. I write programs for mathematical linguistics. > Especially program for frequency dictionary of chosen text. I write text > to the editor. The text is in Czech. It displays correctly in editor > window , i.e. with diacritics. Then follows transformation into words. In > program for frequency diactionary, which contains binary search I have > usual read and write statements. When I send the result to the printer > with write it is displayed incorrectly on the print output - the > diacritics. I am working under Windows |X|P. > > What other details should I give for somebody to give me advice. I guess this might be enough for somebody to try - I personally have absolutely no idea what kind of charset is used/expected when printing via Write(Ln) to Lst under Windows, but this shouldn't be difficult to check? Do I understand it correctly that the screen output is OK now (as opposed to your original post)? Tomas > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Fria Martin > Mgr > Sent: Monday, July 10, 2006 2:21 PM > To: fpc-pascal@lists.freepascal.org > Subject: [fpc-pascal] national support > > > > I am enthusiastic user of Free Pascal. I want ask a question, if there in > Free Pascal exist the support for national environment. In czech there are > letters with diacritics. They are not displayed correctly on the screen > and on the printer. In Windows there is code page 1250 for these signs. Is > there something in Free pascal? > > Martin Fris ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Common OpenMP syntax?
On Wednesday 26 July 2006 10:00, Michael Van Canneyt wrote: > On Wed, 26 Jul 2006, Vinzent Hoefler wrote: > > On Wednesday 26 July 2006 09:46, Michael Van Canneyt wrote: > > > It seems obvious to me that a global function can be called in > > > parallel at any time. The compiler can perfectly detect whether > > > a global function writes to variables outside it's own scope, in > > > which case it's probably a no-no to paralellize the function. > > > > Hey, you're trying to put more burden on the compiler here as the > > spec even allows, I'd say. > > > > Don't go on or you'll end up with the requirement for compile time > > dead-lock detection. :) > > Well, my statement is moderate in the sense that the compiler does > this anyway already (see the hints/warnings about unused > params/vars); let's use this information as much as we can. True. Using information that's already there, can't be wrong. I second that. We're not C, where everything is standardized to be the programmer's problem. So yes, if concurrency will ever be implemented in the language, no matter how, some decent warnings/hints/notes about several questionable constructs would be nice. Vinzent. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re[2]: [fpc-pascal] national support
> > What other details should I give for somebody to give me advice. > > I guess this might be enough for somebody to try - I personally have > absolutely no idea what kind of charset is used/expected when printing via > Write(Ln) to Lst under Windows, but this shouldn't be difficult to check? > Do I understand it correctly that the screen output is OK now (as opposed > to your original post)? > Tomas Some of these matters were discussed before in maillist related to "crt garbles writeln output" (http://www.mail-archive.com/fpc-devel@lists.freepascal.org/msg05224.html is one of the messages). There was a patch for that (not this) problem from Maxim Ganetsky, which can help to understand things. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] Compiler Warning and Notices like unused variables etc.
I just wanted to say I LOVE the fact that the compiler warns you of these mundane details. Personally, I don't consider my application at a good stopping point unless I can make all the warnings go away. Sometimes I even will put in (hopefully a low overhead thing when I do it) a meaningless command to remove "variable not initialized" warnings... when I KNOW I'm doing something to init the variable that the compiler can't (nor is expected to) know I'm doing that. Example: Procedure HiWorld; Var MyVariable: ansistring; Begin MyVariable:=MyVariable; // this is a workaround in rare cases. CallAReferenceProcedure(MyVariable); // This is warning material. End; Note: I know it MAY create a few assembly instructions - but I think I'll take a couple of them to hush the compiler. It seems like a "CLEAN" thing to do... I mean, it raises doubt (speaking for myself) when I compile something and there are warnings being displayed. It makes me think the programmer has not addressed everything or my environment might be the cause of said application to maybe not work as designed. Jason P Sage ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] MySQL4 Pascal Unit
I have tested the FPC supplied MySQL4 unit and I've admittedly haven't had a ton of time to play with it yet. But I was curious if any of you had any feedback about it. I wrote a wrapper for the FPC supplied MySQL3 a long time ago and it worked awesome. I think I should do the same for MySQL4, and perhaps someone is working on a MySQL5 unit for FPC now. So, my questions can be summarized with: If you used the MySQL4 unit in FPC, do you have any comments you could share? Thank You, Jason P Sage [EMAIL PROTECTED] ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] MySQL4 Pascal Unit
On Wed, 26 Jul 2006, Jason P Sage wrote: > I have tested the FPC supplied MySQL4 unit and I've admittedly haven't had a > ton of time to play with it yet. But I was curious if any of you had any > feedback about it. > > I wrote a wrapper for the FPC supplied MySQL3 a long time ago and it worked > awesome. I think I should do the same for MySQL4, and perhaps someone is > working on a MySQL5 unit for FPC now. The mysql 5 unit has been available since a long time. > > So, my questions can be summarized with: If you used the MySQL4 unit in FPC, > do you have any comments you could share? Mysql 3 and 4 are relatively compatible, the only area needing some changes are the connection routines. Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] CRT (Console Unit) Problems with Fedora 5
Hi, It's me again. I was wondering if anyone has run into a problem where programs that used the CRT unit and have worked for both Linux and win32 find that these same programs no longer work on newer lynx's? I have this whole suite of code - literally megs of source code that works on Win32 and used to work on some older distros of Linux years back. When I got them to compile in FPC 2, and they ran on Windows, they would not run on Redhat Fedora 5 Linux. I did find that I could probably write an old BBS ANSI'ish alternative to the CRT unit and maybe make the calls pretty compatible or something - dropping some legacy TERMINFO stuff etc just using escape sequences for maybe VT400 and Linux console or something. (Which my efforts to emulate the CRT calls themselves I've had problems with - I don't understand all the constructs for some things - but that is me... and frankly I'd rather use what works(worked) before)) Does anyone know what might be different in current Linux distros that's not handled like before that might contribute to the CRT unit not working on my Fedora 5? A good example is that FreeVision and the FPC IDE do not work on my Linux either. Thanks - this one has baffled me for awhile. One solution would be to make a wrapper to the CRT unit, and depending if I'm Linux or not, use CRT stock lock and barrel, and use a home made lean terminal emulator for Linux. Does this sound like a good or bad idea? Thank You Again! Jason P Sage ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Compiler Warning and Notices like unused variables etc.
MyVariable:=MyVariable; // this is a workaround in rare cases. Can anybody that knowns the internals of FPC confirm if this will create extra work/code for the compiler? I have been trying for a long time to figure out a clean way of getting rid of some compiler warnings. Regards, Graeme. -- There's no place like 127.0.0.1 ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Compiler Warning and Notices like unused variables etc.
On Wednesday 26 July 2006 12:49, Graeme Geldenhuys wrote:
> > MyVariable:=MyVariable; // this is a workaround in rare cases.
>
> Can anybody that knowns the internals of FPC confirm if this will
> create extra work/code for the compiler?
It does create an assignment. At least with the fpc2.0.2 version I just
checked:
Compiled with "-al" for source lines and "-O3":
|.Ll2:
|.stabn 68,0,10,.Ll2 - P$TEST_ASSIGN
|# [10] x := x;
|movl-4(%ebp),%eax
Without optimization it even generates:
|.stabn 68,0,10,.Ll2 - P$TEST_ASSIGN
|# [10] x := x;
|movl-4(%ebp),%eax
|movl%eax,-4(%ebp)
Depending on the view point and application it might be negligible. It's
probably not a good idea to do that inside a tight loop, but in most
other cases those couple of bytes won't hurt.
Although, well ... I wouldn't depend on that behaviour, because the
variable still *is* as uninitialized as before, because the right hand
side of the expression assigned to it is. So if someone cares to write
code for a more stricter data flow analysis, the warning may at some
time reappear.
So this is no clean way to do it I'd say.
What is needed is a way to tell the compiler: "Trust me. I know what I'm
doing."[1] ;)
Vinzent.
[1] "{$SLEDGE_HAMMER ON}"?
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Re: [fpc-pascal] Compiler Warning and Notices like unused variables etc.
On Wed, 26 Jul 2006, Graeme Geldenhuys wrote: > > MyVariable:=MyVariable; // this is a workaround in rare cases. > > Can anybody that knowns the internals of FPC confirm if this will > create extra work/code for the compiler? It will. > I have been trying for a > long time to figure out a clean way of getting rid of some compiler > warnings. Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] CRT (Console Unit) Problems with Fedora 5
Jason P Sage wrote: > A good example is that FreeVision and the FPC IDE do not work on my Linux > either. Elaborate on "do not work" please ? Micha ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] national support
Friš Martin Mgr napisał(a): I give additional details. I write programs for mathematical linguistics. Especially program for frequency dictionary of chosen text. I write text to the editor. The text is in Czech. It displays correctly in editor window , i.e. with diacritics. Then follows transformation into words. In program for frequency diactionary, which contains binary search I have usual read and write statements. When I send the result to the printer with write it is displayed incorrectly on the print output – the diacritics. I am working under Windows |X|P. What other details should I give for somebody to give me advice. Martin Fris -Original Message- *From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] *On Behalf Of *Friš Martin Mgr *Sent:* Monday, July 10, 2006 2:21 PM *To:* fpc-pascal@lists.freepascal.org *Subject:* [fpc-pascal] national support I am enthusiastic user of Free Pascal. I want ask a question, if there in Free Pascal exist the support for national environment. In czech there are letters with diacritics. They are not displayed correctly on the screen and on the printer. In Windows there is code page 1250 for these signs. Is there something in Free pascal? Martin Fris Hi Printing diactrics not depend on FPC only on system and choose code page of You. You can write on printer with the same like on screen. Printer has the same canvas. But when You choose font You have to change code page. to 1250. You can print also in text mode, but then You have to change code page manual (its depend on printer). Some times You have to convert text form one code page to another (f.e from 8859-2 to 1250 or UTF-8) Send which method You need, and sample code. Darek ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] Unknown runtime error 202
I had this error two or three times these days. I managed to get rid of it by
moving a local method variable to a field. Example:
class.method
var
d3 : array[ .., .., ..] of ...
begin
...
Works, if length(d3) < unknown limit. When I get the unknown runtime error 202
instead, I rearrange d3 to
... class
private
Fd3 : array ...
Then it works again. Apparently for unlimited array sizes. But what is the
secret, where is the limit? And if this secret / limit is known, why the error
is not?
Regards
Wolfram
P.S. I do love all fpc warnings and hints too. Except [file variable] does not
seem to be initialized. So far the only situation, where I am used to wrap a
statement in {$HINTS OFF} .. {$HINTS ON}
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Re: [fpc-pascal] Unknown runtime error 202
Wolfram Kläger wrote: I had this error two or three times these days. I managed to get rid > of it by moving a local method variable to a field. Example: class.method var d3 : array[ .., .., ..] of ... begin ... Works, if length(d3) < unknown limit. When I get the unknown runtime > error 202 instead, I rearrange d3 to ... class private Fd3 : array ... Then it works again. Apparently for unlimited array sizes. But what is > the secret, where is the limit? And if this secret / limit is known, > why the error is not? Well, I don't know why exactly it is displayed as "Unknown runtime error", but I hit that several times myself. Fortunately I still remember the good old Turbo Pascal days, where number 202 was a stack overflow error, and from my findings - when it happened to my code - it still is. Highly recursive routines with a wrong or even missing termination condition have never been a good idea. ;) To answer your question: According to the documentation, the size of the local variables (allocated on the stack) should not exceed 32 KiBytes for portability reasons. So if you need more, it just depends on how much the target architecture is able to supply. So it's probably a better idea to allocate anything larger than that from the heap. Vinzent. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
