Mailing-List: contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT sources DOT redhat DOT com>
List-Archive: <http://sources.redhat.com/ml/cygwin/>
List-Post: <mailto:cygwin AT sources DOT redhat DOT com>
List-Help: <mailto:cygwin-help AT sources DOT redhat DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender: cygwin-owner AT sources DOT redhat DOT com
Delivered-To: mailing list cygwin AT sources DOT redhat DOT com
Date: Sun, 3 Jun 2001 12:05:31 -0400
From: Christopher Faylor <cgf AT redhat DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: CreateFiber() : number of fibers limited
Message-ID: <20010603120531.B29241@redhat.com>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
References: <3B1A0E67 DOT 1A48AD8A AT unidui DOT uni-duisburg DOT de> <5 DOT 1 DOT 0 DOT 14 DOT 2 DOT 20010603085539 DOT 02534088 AT pop3 DOT cris DOT com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.3.11i
In-Reply-To: <5.1.0.14.2.20010603085539.02534088@pop3.cris.com>; from rrschulz@cris.com on Sun, Jun 03, 2001 at 08:59:48AM -0700

On Sun, Jun 03, 2001 at 08:59:48AM -0700, Randall R Schulz wrote:
>Don't forget about the Cygwin-wide memory allocation limit dictated by the 
>DWORD registry entry "heap_chunk_in_mb" (HKEY_CURRENT_USER\Software\Cygnus 
>Solutions\Cygwin\heap_chunk_in_mb) which defaults to 128 (megabytes).
>
>Where this limit typically hit me was in compiling a C program with a large 
>switch statement using gcc with -O4 optimization.

That controls cygwin's allocation.  It should have nothing to do with
allocation of memory for the Windows API functions.

cgf

>At 03:16 2001-06-03, Holger Vogt wrote:
>>independently of the requested stack size (first parameter in
>>CreateFiber()), CYGWIN will give only 53 fibers. Only when I increase
>>the stack size above 9.5 MByte, I will get a further reduction in the
>>number of fibers created.
>>
>>The error by GetLastError is always no. 8, 'Not enough storage is
>>available to process this command.'.
>>
>>Borland C++Builder Compiler (same test application) will reduce the
>>number of possible fibers according to stack size. 1000 fibers are no
>>problem with a stack size of 64 k Byte.

--
Want to unsubscribe from this list?
Check out: http://cygwin.com/ml/#unsubscribe-simple