MinGW - Minimalist GNU for Windows

From: "Mohan Embar"

> Hi People,
>
> While we're on the subject of missing mingw32 stuff,
> would anyone be interested in scandir() and alphasort()?
> I coded these up a few months ago and got them
> working under mingw-runtime-2.4, but wasn't too
> motivated to submit them as you can see from the
> forwarded email because this support then broke
> the gcj front end.
>
Does JCF_USE_SCANDIR  work now with 3.3.1 and your proposed contrib?
If so, yes I am interested.

> If someone is interested, I'll submit this. Let me
> know what you expect as far as coding standards,
> tests, whether I need to take a shower before pressing
> the [Send] key, etc.

A sample program in the samples/dirent directory would be useful.

Danny
>
> -- Mohan
> http://www.thisiscool.com/
> http://www.animalsong.org/
>
> ------- Start of forwarded message -------
> Subject: Fwd: Re: scandir( )/alphasort( ) for libmingwex
> Date: 4/25/2003 1:30:34 AM
>
> Hi Ranjit,
>
> >     I just wanted to know that you have this on
> >your list after you are through with your
> >cross-configury patch - do remember to submit this
> >to the MinGW maintainers after you are through with
> >3.3 patches.
>
> I'll do this, but I'm a bit demotivated because when
> the JCF_USE_SCANDIR piece of jcf-io.c is "turned on",
> all hell breaks loose on MingW. More patches will be
> needed to jcf-io.c to make these work; I know how
> to fix these, but I wonder how palatable some of them
> will be to the Posix folks. For example, lines like
> this:
>
> buffer[i] = ch == '.' ? '/' : ch;
>
> would need to become
>
> buffer[i] = (ch=='.' || IS_DIR_SEPARATOR(ch)) ? DIR_SEPARATOR : ch
>
> to properly canonicalize the cached paths. I envisioned
> the arm-twisting needed to explain the rationale behind
> this to Tom, who's already got a massive backlog, and got
> demotivated.
>
> In the end, I ended up putting this effort on hold. However,
> it will probably be needed for another piece I'm working
> on: building all class files in libgcj with a <i>single</i>
> invocation of gcj! I've got this working and it's
> amazingly cool, but the patch needs to be polished more.
>
> ...
>
> -------- End of forwarded message --------
>
>
>
>
>
>
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Hi Danny,

I'm taking the liberty of CCing the java mailing list on this.
Java people: note that in my original reply to Ranjit three
months ago, I erroneously pointed out that Tom (and not Andrew)
would have to approve this.

Mohan>> While we're on the subject of missing mingw32 stuff,
Mohan>> would anyone be interested in scandir() and alphasort()?
Mohan>> I coded these up a few months ago and got them
Mohan>> working under mingw-runtime-2.4, but wasn't too
Mohan>> motivated to submit them as you can see from the
Mohan>> forwarded email because this support then broke
Mohan>> the gcj front end.

Danny> Does JCF_USE_SCANDIR  work now with 3.3.1 and your proposed contrib?
Danny> If so, yes I am interested.

Nothing will work until I or someone else submits a patch for the gcj
front end, which hasn't been done yet.

Mohan>> If someone is interested, I'll submit this. Let me
Mohan>> know what you expect as far as coding standards,
Mohan>> tests, whether I need to take a shower before pressing
Mohan>> the [Send] key, etc.

Danny> A sample program in the samples/dirent directory would be useful.

Okay, so now I owe you two things:

- a sample Java program which tests out the FileDescriptor stuff
  you mentioned
- this

-- Mohan
http://www.thisiscool.com/
http://www.animalsong.org/

>> ------- Start of forwarded message -------
>> Subject: Fwd: Re: scandir( )/alphasort( ) for libmingwex
>> Date: 4/25/2003 1:30:34 AM
>>
>> Hi Ranjit,
>>
Ranjit>> >     I just wanted to know that you have this on
Ranjit>> >your list after you are through with your
Ranjit>> >cross-configury patch - do remember to submit this
Ranjit>> >to the MinGW maintainers after you are through with
Ranjit>> >3.3 patches.
>>
Mohan>> I'll do this, but I'm a bit demotivated because when
Mohan>> the JCF_USE_SCANDIR piece of jcf-io.c is "turned on",
Mohan>> all hell breaks loose on MingW. More patches will be
Mohan>> needed to jcf-io.c to make these work; I know how
Mohan>> to fix these, but I wonder how palatable some of them
Mohan>> will be to the Posix folks. For example, lines like
Mohan>> this:
>>
Mohan>> buffer[i] = ch == '.' ? '/' : ch;
>>
Mohan>> would need to become
>>
Mohan>> buffer[i] = (ch=='.' || IS_DIR_SEPARATOR(ch)) ? DIR_SEPARATOR : ch
>>
Mohan>> to properly canonicalize the cached paths. I envisioned
Mohan>> the arm-twisting needed to explain the rationale behind
Mohan>> this to Tom, who's already got a massive backlog, and got
Mohan>> demotivated.
>>
Mohan>> In the end, I ended up putting this effort on hold. However,
Mohan>> it will probably be needed for another piece I'm working
Mohan>> on: building all class files in libgcj with a <i>single</i>
Mohan>> invocation of gcj! I've got this working and it's
Mohan>> amazingly cool, but the patch needs to be polished more.

>> -------- End of forwarded message --------

>>>>> "Mohan" == Mohan Embar <gnustuff@...> writes:

Mohan> For example, lines like this:
Mohan> buffer[i] = ch == '.' ? '/' : ch;
Mohan> would need to become
Mohan> buffer[i] = (ch=='.' || IS_DIR_SEPARATOR(ch)) ? DIR_SEPARATOR : ch
Mohan> to properly canonicalize the cached paths. I envisioned the
Mohan> arm-twisting needed to explain the rationale behind this to
Mohan> Tom, who's already got a massive backlog, and got demotivated.

It's no trouble -- Andrew would be reviewing this :-)

Seriously, something like that could be wrapped in some more graceful
macro.  I don't think the idea is really controversial; we want gcj to
work on Windows.

Tom

Hi Tom,

>Mohan> For example, lines like this:
>Mohan> buffer[i] = ch == '.' ? '/' : ch;
>Mohan> would need to become
>Mohan> buffer[i] = (ch=='.' || IS_DIR_SEPARATOR(ch)) ? DIR_SEPARATOR : ch
>Mohan> to properly canonicalize the cached paths.

>Seriously, something like that could be wrapped in some more graceful
>macro.

I understand the macro part - I was just trying to make things more explicit
for the post.

>I don't think the idea is really controversial; we want gcj to work on Windows.

Okay, I'll get cracking on this. Now where did I put that scandir()/alphasort()
implementation? Here kitty, kitty, kitty....

-- Mohan
http://www.thisiscool.com/
http://www.animalsong.org/

----- Original Message -----
From: "Mohan Embar" <gnustuff@...>
>
> I'll do this, but I'm a bit demotivated because when
> the JCF_USE_SCANDIR piece of jcf-io.c is "turned on",
> all hell breaks loose on MingW. More patches will be
> needed to jcf-io.c to make these work; I know how
> to fix these, but I wonder how palatable some of them
> will be to the Posix folks. For example, lines like
> this:
>
> buffer[i] = ch == '.' ? '/' : ch;
>
> would need to become
>
> buffer[i] = (ch=='.' || IS_DIR_SEPARATOR(ch)) ? DIR_SEPARATOR : ch
>
> to properly canonicalize the cached paths. I envisioned
> the arm-twisting needed to explain the rationale behind
> this to Tom, who's already got a massive backlog, and got
> demotivated.
>

Why not do the canonicalization in dirent.c?  After all  these are Posix
extensions, so why
not use Posix '/' rather than '\\'  to store paths.

Danny

Hi Danny,

>Why not do the canonicalization in dirent.c?  After all  these are Posix
>extensions, so why
>not use Posix '/' rather than '\\'  to store paths.

Wow, this looks very promising. I'll take it for a spin. Thanks for this.

-- Mohan
http://www.thisiscool.com/
http://www.animalsong.org/

----- Original Message -----
From: "Mohan Embar" <gnustuff@...>
To: <mingw-dvlpr@...>
Sent: Monday, 28 July 2003 05:08
Subject: Re: [MinGW-dvlpr] scandir( )/alphasort( ) for libmingwex


> Hi Danny,
>
> >Why not do the canonicalization in dirent.c?  After all  these are
Posix
> >extensions, so why
> >not use Posix '/' rather than '\\'  to store paths.

I hadn't tested the patch I sent first time and it had a couple of
mistakes, which you've probably found.

Here is revised version.

Danny


>
> Wow, this looks very promising. I'll take it for a spin. Thanks for
this.
>
> -- Mohan
> http://www.thisiscool.com/
> http://www.animalsong.org/
>
>
>
>
>
>
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/01
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Hi Danny,

>I hadn't tested the patch I sent first time and it had a couple of
>mistakes, which you've probably found.
>
>Here is revised version.

Thanks for this. I need to troubleshoot the currently broken 3.4 MinGW
gcj build before looking into this, but this is definitely on my list. Thanks again.

-- Mohan
http://www.thisiscool.com/
http://www.animalsong.org/

----- Original Message -----
From: "Mohan Embar" <gnustuff@...>
To: <mingw-dvlpr@...>
Sent: Tuesday, 29 July 2003 22:17
Subject: Re: [MinGW-dvlpr] scandir( )/alphasort( ) for libmingwex


> Hi Danny,
>
> >I hadn't tested the patch I sent first time and it had a couple of
> >mistakes, which you've probably found.
> >
> >Here is revised version.
>
> Thanks for this. I need to troubleshoot the currently broken 3.4 MinGW
> gcj build before looking into this, but this is definitely on my list.
Thanks again.
>
> -- Mohan
> http://www.thisiscool.com/
> http://www.animalsong.org/
>

Mohan, when I try  the first url above  I get
 HTTP Error 403 - Forbidden

What I was after was some benchmark testesuite results for libjava.  I
am currently getting a lot of  errors in compilation from btyecode when
testcases are  pushed through degagnu, but no error when I run manually.
This is with 3_3-branch

Any ideas

Danny
>
>
>
>
> -------------------------------------------------------
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Hi Danny,

>Mohan, when I try  the first url above  I get
> HTTP Error 403 - Forbidden

Thanks for pointing this out. I sent my web host an
inquiry and it turned out that they shut me down
due to bandwidth issues (from my gcj builds - argh!)
without warning:

http://gcc.gnu.org/ml/java/2003-07/msg00383.html

>What I was after was some benchmark testesuite results for libjava.  I
>am currently getting a lot of  errors in compilation from btyecode when
>testcases are  pushed through degagnu, but no error when I run manually.
>This is with 3_3-branch
>
>Any ideas

I've never used DejaGNU yet. I've been meaning to look
into this, but never have. Do you have a specific example?
Let me know if you want me to follow up on this. 

-- Mohan
http://www.thisiscool.com/
http://www.animalsong.org/