X-Recipient: archive-cygwin AT delorie DOT com X-Spam-Check-By: sourceware.org Date: Fri, 11 Mar 2011 15:23:57 +0100 From: Corinna Vinschen To: cygwin AT cygwin DOT com Subject: Re: ld: fatal error - cmalloc would have returned NULL Message-ID: <20110311142357.GI7064@calimero.vinschen.de> Reply-To: cygwin AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com References: <4D7A2951 DOT 1030002 AT emrich-ebersheim DOT de> <20110311141317 DOT GH7064 AT calimero DOT vinschen DOT de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20110311141317.GH7064@calimero.vinschen.de> User-Agent: Mutt/1.5.21 (2010-09-15) Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com On Mar 11 15:13, Corinna Vinschen wrote: > On Mar 11 14:53, Rainer Emrich wrote: > > I have to be more clear. I increased the heap_chunk_in_mb to 1792 using: > > regtool -i set /HKLM/Software/Cygwin/heap_chunk_in_mb 1792 > > But that's the size of the application heap, not the size of the > cygheap. The cygheap is used by a couple of internal datastructures > of the cygwin DLL itself, while the application heap is used for malloc. > > So you raised the size of the application heap, probably not to 1792 > Megs, but the next lower allocation possible (cygwin decrements the size > in 1MB steps until the allocation succeeds. > > That's weird. malloc uses mmap, but only for allocations beyond 128K. Actually mmap is only used if you try to malloc >= 256K. > Since ld only allocates 64K chunks, it doesn't look like mmap is called > from malloc. OTOH, if raising the heap size helps, how do the > zillions of mmap calls into this picture?!? Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple