Re: Memory problems: new versus GlobalAlloc

Article View: borland.public.cppbuilder.nativeapi

Article #6975

Back to borland.public.cppbuilder.nativeapi Previous Next

#6975

From: Wim Bekker
Date: Wed, 30 Mar 2005 11:42

14 lines
1564 bytes

Reading through more documentation and newsgroups, I've noticed that 
Borlands new uses VirtualAlloc. Some calls to new, especially when asking a 
lot of memory use more than one call to VirtualAlloc to get one block.

Maybe the block is devided on several pages that are swapped to and from 
disk.

GetDIB, StretchDIBits etc cannot handle this. They need a block that is 
continous, for example one from GlobalAlloc.

This explains why GlobalAlloc works when allocating a buffer and new doesn't 
work.

Wim

Technical Details

Message-ID: <424a9004@newsgroups.borland.com>

Path:

arc1-ca.pugleaf.net!g2news1.google.com!news3.google.com!newshub.sdsu.edu!peer01.west.cox.net!cox.net!newsfeeds.ihug.co.nz!ihug.co.nz!newsgroups.borland.com!not-for-mail

References:

<42403f3c@newsgroups.borland.com> <42408062$3@newsgroups.borland.com> <42413c01$1@newsgroups.borland.com> <ca9441lbia8eochgsn5f6bltpsjamjf983@4ax.com> <4242b970@newsgroups.borland.com>

Show Full Headers

Complete Article Headers

X-Google-Thread: 10cc67,6b3a605b9bc38024
X-Google-Attributes: gid10cc67,public
X-Google-Language: ENGLISH,ASCII-7-bit
From: "Wim Bekker" <no-no-no-mail@no-no-noware.com>
Newsgroups: borland.public.cppbuilder.nativeapi
References: <42403f3c@newsgroups.borland.com> <42408062$3@newsgroups.borland.com> <42413c01$1@newsgroups.borland.com> <ca9441lbia8eochgsn5f6bltpsjamjf983@4ax.com> <4242b970@newsgroups.borland.com>
Subject: Re: Memory problems: new versus GlobalAlloc
Date: Wed, 30 Mar 2005 13:42:50 +0200
Lines: 16
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2900.2180
X-RFC2646: Format=Flowed; Response
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
NNTP-Posting-Host: 82.161.70.62
Message-ID: <424a9004@newsgroups.borland.com>
X-Trace: newsgroups.borland.com 1112182788 82.161.70.62 (30 Mar 2005 03:39:48 -0800)
Path: arc1-ca.pugleaf.net!g2news1.google.com!news3.google.com!newshub.sdsu.edu!peer01.west.cox.net!cox.net!newsfeeds.ihug.co.nz!ihug.co.nz!newsgroups.borland.com!not-for-mail

Reply to Parent Message