Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-19 Thread Andrew Dunstan



Magnus Hagander wrote:

Andrew Dunstan wrote:



Robert Lor wrote:

Peter Eisentraut wrote:
Well, yes.  I meant to say, a build system that can supply the 
functionality of Gen_fmgrtab can surely implement this new thing.  
I see there is Perl being used, so it should be simple.
  
I was thinking of using a Perl script to generate the dummy header 
file but decided against it to avoid disrupting the build on other 
platforms. If sed doesn't work on Windows for some reason, we can 
use a Perl script instead.





What we should do in fact is to use psed on Windows to execute the 
script. This is a sed emulator that is part of the standard perl 
install, and will save us the bother of having to maintain two 
generation scripts, or switching from sed to perl. We just need to 
find where to plug that into the Windows build process.


Hadn't heard about that one. Sounds like a good way to do it, if you 
can find the correct place for it :-)



I'm thinking of the patch below.  I'll try it out tomorrow.

cheers

andrew

Index: Solution.pm
===
RCS file: /cvsroot/pgsql/src/tools/msvc/Solution.pm,v
retrieving revision 1.36
diff -c -r1.36 Solution.pm
*** Solution.pm 28 Feb 2008 12:17:59 -  1.36
--- Solution.pm 20 Mar 2008 00:02:05 -
***
*** 205,210 
--- 205,216 
 close(T);
 }

+ if 
(IsNewer('src\include\utils\probes.h','src\backend\utils\probes.d'))

+ {
+   print "Generating probes.h...\n";
+   system('psed -f src\backend\utils\Gen_dummy_probes.sed 
src\backend\utils\probes.d > src\include\utils\probes.h');

+   }
+
 if 
(IsNewer('src\interfaces\libpq\libpq.rc','src\interfaces\libpq\libpq.rc.in'))

 {
 print "Generating libpq.rc...\n";




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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-19 Thread Magnus Hagander

Andrew Dunstan wrote:



Robert Lor wrote:

Peter Eisentraut wrote:
Well, yes.  I meant to say, a build system that can supply the 
functionality of Gen_fmgrtab can surely implement this new thing.  I 
see there is Perl being used, so it should be simple.
  
I was thinking of using a Perl script to generate the dummy header 
file but decided against it to avoid disrupting the build on other 
platforms. If sed doesn't work on Windows for some reason, we can use 
a Perl script instead.





What we should do in fact is to use psed on Windows to execute the 
script. This is a sed emulator that is part of the standard perl 
install, and will save us the bother of having to maintain two 
generation scripts, or switching from sed to perl. We just need to find 
where to plug that into the Windows build process.


Hadn't heard about that one. Sounds like a good way to do it, if you can 
find the correct place for it :-)


//Magnus

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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-19 Thread Andrew Dunstan



Robert Lor wrote:

Peter Eisentraut wrote:
Well, yes.  I meant to say, a build system that can supply the 
functionality of Gen_fmgrtab can surely implement this new thing.  I 
see there is Perl being used, so it should be simple.
  
I was thinking of using a Perl script to generate the dummy header 
file but decided against it to avoid disrupting the build on other 
platforms. If sed doesn't work on Windows for some reason, we can use 
a Perl script instead.





What we should do in fact is to use psed on Windows to execute the 
script. This is a sed emulator that is part of the standard perl 
install, and will save us the bother of having to maintain two 
generation scripts, or switching from sed to perl. We just need to find 
where to plug that into the Windows build process.


cheers

andrew


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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Tom Lane
Peter Eisentraut <[EMAIL PROTECTED]> writes:
> Joshua D. Drake wrote:
>> What is adding Perl in practice?

> For one thing, a moving target.

Well, if we were that afraid of Perl version discrepancies, we shouldn't
be using it at all anywhere.  My point was just that we should not add
a new build tool dependency without a darn good reason; and something
you can easily do in sed doesn't qualify as a darn good reason.

regards, tom lane

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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Joshua D. Drake
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

On Wed, 19 Mar 2008 00:07:09 +0100
Peter Eisentraut <[EMAIL PROTECTED]> wrote:

> Joshua D. Drake wrote:
> > At some point, do we recognize that Perl is installed on every
> > reasonable platform in existence or can be easily? I mean, we
> > already require autoconf/make etc... What is adding Perl in
> > practice?
> 
> For one thing, a moving target.  If we rely on "standard" Unix tools,
> we have something fairly stable, if you are careful to read the
> documentation to omit the occasional GNU extension.  But with Perl,
> you'd have a constant worry, which Perl versions to support and which
> features that Perl version provides.
> 

That is certainly reasonable and I have to admit, I don't follow Perl
releases as much as I probably should but I can't remember the last
time something I would do in "standard" perl wouldn't work for every
version of perl since 5.6. I guess there is a consideration with the
imminent, supposedly in our lifetime release of 6. 

Fair enough.

Sincerely,

Joshua D. Drake


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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Peter Eisentraut
Joshua D. Drake wrote:
> At some point, do we recognize that Perl is installed on every
> reasonable platform in existence or can be easily? I mean, we already
> require autoconf/make etc... What is adding Perl in practice?

For one thing, a moving target.  If we rely on "standard" Unix tools, we have 
something fairly stable, if you are careful to read the documentation to omit 
the occasional GNU extension.  But with Perl, you'd have a constant worry, 
which Perl versions to support and which features that Perl version provides.

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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Joshua D. Drake
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On Tue, 18 Mar 2008 18:14:32 -0400
Tom Lane <[EMAIL PROTECTED]> wrote:

> > Perl is required for all MSVC builds, and for all builds from CVS
> > on any platform too, IIRC, so it's a fairly safe bet for any tool
> > you provide.
> 
> The key phrase in that is "from CVS".  Changing the sed script to Perl
> would introduce an unacceptable new dependency for builds from
> tarballs.

At some point, do we recognize that Perl is installed on every
reasonable platform in existence or can be easily? I mean, we already
require autoconf/make etc... What is adding Perl in practice?

Sincerely,

Joshua D. Drake


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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Tom Lane
Andrew Dunstan <[EMAIL PROTECTED]> writes:
> Robert Lor wrote:
>> I was thinking of using a Perl script to generate the dummy header 
>> file but decided against it to avoid disrupting the build on other 
>> platforms. If sed doesn't work on Windows for some reason, we can use 
>> a Perl script instead.

> Perl is required for all MSVC builds, and for all builds from CVS on any 
> platform too, IIRC, so it's a fairly safe bet for any tool you provide.

The key phrase in that is "from CVS".  Changing the sed script to Perl
would introduce an unacceptable new dependency for builds from tarballs.

However, there's nothing wrong with using Perl in the MSVC case,
since those scripts need it anyway.

regards, tom lane

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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Andrew Dunstan



Robert Lor wrote:

Peter Eisentraut wrote:
Well, yes.  I meant to say, a build system that can supply the 
functionality of Gen_fmgrtab can surely implement this new thing.  I 
see there is Perl being used, so it should be simple.
  
I was thinking of using a Perl script to generate the dummy header 
file but decided against it to avoid disrupting the build on other 
platforms. If sed doesn't work on Windows for some reason, we can use 
a Perl script instead.





Perl is required for all MSVC builds, and for all builds from CVS on any 
platform too, IIRC, so it's a fairly safe bet for any tool you provide.


cheers

andrew

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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Robert Lor

Peter Eisentraut wrote:

Am Dienstag, 18. März 2008 schrieb Tom Lane:
  

Well, I've got Leopard here, I'd be happy to test it ... but the patch
has rendered
http://developer.postgresql.org/pgdocs/postgres/dynamic-trace.html
into a pack of lies quite independently of which OSes are supported,
so I'm not very sure what to do.



Ah yes.  Robert, do you think you could update the documentation a bit on how 
to use the tracing?


  

Yes, the doc needs to be updated. Will submit a patch soon!

Regards,
-Robert

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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Robert Lor

Peter Eisentraut wrote:
Well, yes.  I meant to say, a build system that can supply the functionality 
of Gen_fmgrtab can surely implement this new thing.  I see there is Perl 
being used, so it should be simple.
  
I was thinking of using a Perl script to generate the dummy header file 
but decided against it to avoid disrupting the build on other platforms. 
If sed doesn't work on Windows for some reason, we can use a Perl script 
instead.


Regards,
-Robert


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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Peter Eisentraut
Am Dienstag, 18. März 2008 schrieb Tom Lane:
> Well, I've got Leopard here, I'd be happy to test it ... but the patch
> has rendered
> http://developer.postgresql.org/pgdocs/postgres/dynamic-trace.html
> into a pack of lies quite independently of which OSes are supported,
> so I'm not very sure what to do.

Ah yes.  Robert, do you think you could update the documentation a bit on how 
to use the tracing?

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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Tom Lane
Alvaro Herrera <[EMAIL PROTECTED]> writes:
> Dave Page wrote:
>> Shouldn't there have been a doc patch with this as well? Last time I
>> read the docs they said only Solaris supports dtrace.

> Well, it won't support anything else until somebody tries debugs it ;-)

Well, I've got Leopard here, I'd be happy to test it ... but the patch
has rendered 
http://developer.postgresql.org/pgdocs/postgres/dynamic-trace.html
into a pack of lies quite independently of which OSes are supported,
so I'm not very sure what to do.

regards, tom lane

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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Alvaro Herrera
Dave Page wrote:

> Shouldn't there have been a doc patch with this as well? Last time I
> read the docs they said only Solaris supports dtrace.

Well, it won't support anything else until somebody tries debugs it ;-)

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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Peter Eisentraut
Am Dienstag, 18. März 2008 schrieb Dave Page:
> I was actually thinking of the OS X buildfarm member I setup to
> exercise this. From your description it sounded like we need to
> generate the probe header manually if we enable dtrace.

Nope.

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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Dave Page
On Tue, Mar 18, 2008 at 11:48 AM, Peter Eisentraut <[EMAIL PROTECTED]> wrote:
> Am Dienstag, 18. März 2008 schrieb Dave Page:
>
> > I was actually thinking of the OS X buildfarm member I setup to
>  > exercise this. From your description it sounded like we need to
>  > generate the probe header manually if we enable dtrace.
>
>  Nope.

OK, I'll enable it on antelope then.

Shouldn't there have been a doc patch with this as well? Last time I
read the docs they said only Solaris supports dtrace.


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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Peter Eisentraut
Am Dienstag, 18. März 2008 schrieb Dave Page:
> On Mon, Mar 17, 2008 at 7:44 PM, Peter Eisentraut <[EMAIL PROTECTED]> 
wrote:
> > Log Message:
> >  ---
> >  Enable probes to work with Mac OS X Leopard and other OSes that will
> >  support DTrace in the future.
> >
> >  Switch from using DTRACE_PROBEn macros to the dynamically generated
> > macros. Use "dtrace -h" to create a header file that contains the
> > dynamically generated macros to be used in the source code instead of the
> > DTRACE_PROBEn macros.  A dummy header file is generated for builds
> > without DTrace support.
>
> Do we need some support in the buildfarm to create the header file?

The Windows/MSVC build system needs some adjustments.  I have no idea how it 
works, but I'd be glad to explain the details to someone who does.

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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Dave Page
On Tue, Mar 18, 2008 at 9:40 AM, Peter Eisentraut <[EMAIL PROTECTED]> wrote:
>  >
>  > Do we need some support in the buildfarm to create the header file?
>
>  The Windows/MSVC build system needs some adjustments.  I have no idea how it
>  works, but I'd be glad to explain the details to someone who does.

I was actually thinking of the OS X buildfarm member I setup to
exercise this. From your description it sounded like we need to
generate the probe header manually if we enable dtrace.

I'm sure Magnus would love to hear the details for the MSVC perl scipts :-p


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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-18 Thread Dave Page
On Mon, Mar 17, 2008 at 7:44 PM, Peter Eisentraut <[EMAIL PROTECTED]> wrote:
> Log Message:
>  ---
>  Enable probes to work with Mac OS X Leopard and other OSes that will
>  support DTrace in the future.
>
>  Switch from using DTRACE_PROBEn macros to the dynamically generated macros.
>  Use "dtrace -h" to create a header file that contains the dynamically
>  generated macros to be used in the source code instead of the DTRACE_PROBEn
>  macros.  A dummy header file is generated for builds without DTrace support.

Do we need some support in the buildfarm to create the header file?

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Re: [HACKERS] [COMMITTERS] pgsql: Enable probes to work with Mac OS X Leopard and other OSes that

2008-03-17 Thread Peter Eisentraut
Tom Lane wrote:
> Peter Eisentraut <[EMAIL PROTECTED]> writes:
> > Tom Lane wrote:
> >> Peter Eisentraut <[EMAIL PROTECTED]> writes:
> >>> I think if they can run Gen_fmgrtab, they can get this to work.
> >>
> >> They can't.
> >
> > They can't run Gen_fmgrtab or they can't get this to work?
>
> They can't run Gen_fmgrtab.  The MSVC port has its own reimplementation
> of that script, and I suppose now it's going to need one to substitute
> for this, too.

Well, yes.  I meant to say, a build system that can supply the functionality 
of Gen_fmgrtab can surely implement this new thing.  I see there is Perl 
being used, so it should be simple.

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