public inbox for cygwin@cygwin.com
 help / color / mirror / Atom feed
From: Emanuele ALIBERTI <ealiberti@hotmail.com>
To: rbresner@olf.com, dj@delorie.com
Cc: cygwin@sourceware.cygnus.com
Subject: Re: How can I get a .dll to resolve at runtime ?
Date: Thu, 08 Jul 1999 04:54:00 -0000	[thread overview]
Message-ID: <19990708115338.74139.qmail@hotmail.com> (raw)

>I'll actually have function foo() statically linked in
>a.exe and b.exe ( from another library static library).
>And, a.exe and b.exe would be linking to the
>dll. This throws a bone in the works, doesn't it?
>
>If a.exe and b.exe were both running...
>and both load the .dll... which become part of
>the process's address space... Does this mean
>the .dll is 'loaded' twice? Such that

No, it doesn't. Only the internal module reference count is set to two.

>	a.exe->dll->foo()->a.exe
>and
>	b.exe->dll->foo()->b.exe
>If that makes sense? The .exe calls a function in
>the dll, which is calling a function back in the exe.
>So, if a.exe calls the dll, does the dll go back to a.exe
>for the foo()... and if b.exe calls the dll function,
>does the dll go back to b.exe for foo()...?

DLLs (for EXEs it is the same) are memory mapped in the importing process 
address space, not shared.


______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com

--
Want to unsubscribe from this list?
Send a message to cygwin-unsubscribe@sourceware.cygnus.com

WARNING: multiple messages have this Message-ID
From: Emanuele ALIBERTI <ealiberti@hotmail.com>
To: rbresner@olf.com, dj@delorie.com
Cc: cygwin@sourceware.cygnus.com
Subject: Re: How can I get a .dll to resolve at runtime ?
Date: Sat, 31 Jul 1999 18:34:00 -0000	[thread overview]
Message-ID: <19990708115338.74139.qmail@hotmail.com> (raw)
Message-ID: <19990731183400.vmM-5hngkb2aGsl-bTnuy42R58U_XAtw7t88bHU-xlw@z> (raw)

>I'll actually have function foo() statically linked in
>a.exe and b.exe ( from another library static library).
>And, a.exe and b.exe would be linking to the
>dll. This throws a bone in the works, doesn't it?
>
>If a.exe and b.exe were both running...
>and both load the .dll... which become part of
>the process's address space... Does this mean
>the .dll is 'loaded' twice? Such that

No, it doesn't. Only the internal module reference count is set to two.

>	a.exe->dll->foo()->a.exe
>and
>	b.exe->dll->foo()->b.exe
>If that makes sense? The .exe calls a function in
>the dll, which is calling a function back in the exe.
>So, if a.exe calls the dll, does the dll go back to a.exe
>for the foo()... and if b.exe calls the dll function,
>does the dll go back to b.exe for foo()...?

DLLs (for EXEs it is the same) are memory mapped in the importing process 
address space, not shared.


______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com

--
Want to unsubscribe from this list?
Send a message to cygwin-unsubscribe@sourceware.cygnus.com

             reply	other threads:[~1999-07-08  4:54 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1999-07-08  4:54 Emanuele ALIBERTI [this message]
1999-07-31 18:34 ` Emanuele ALIBERTI
  -- strict thread matches above, loose matches on Subject: below --
1999-07-08  4:57 Emanuele ALIBERTI
1999-07-31 18:34 ` Emanuele ALIBERTI
1999-07-08  4:50 Emanuele ALIBERTI
1999-07-31 18:34 ` Emanuele ALIBERTI
1999-07-07 14:42 Robert Bresner
1999-07-07 15:49 ` DJ Delorie
1999-07-07 16:13   ` Tor Lillqvist
1999-07-31 18:34     ` Tor Lillqvist
1999-07-07 17:01   ` Robert Bresner
1999-07-07 17:33     ` DJ Delorie
1999-07-31 18:34       ` DJ Delorie
1999-07-31 18:34     ` Robert Bresner
1999-07-31 18:34   ` DJ Delorie
1999-07-31 18:34 ` Robert Bresner

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=19990708115338.74139.qmail@hotmail.com \
    --to=ealiberti@hotmail.com \
    --cc=cygwin@sourceware.cygnus.com \
    --cc=dj@delorie.com \
    --cc=rbresner@olf.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).