From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/266 Path: news.gmane.org!not-for-mail From: JIghtuse Newsgroups: gmane.linux.lib.musl.general Subject: malloc testing (was: Simple testing task - string functions) Date: Sun, 10 Apr 2011 22:59:08 +0700 Message-ID: <4DA1D3CC.1090008@gmail.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; X-Trace: dough.gmane.org 1312595694 11348 80.91.229.12 (6 Aug 2011 01:54:54 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Sat, 6 Aug 2011 01:54:54 +0000 (UTC) To: musl@lists.openwall.com Original-X-From: envelope-from@hidden Sun Apr 10 19:59:34 2011 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; DomainKey-Signature: a=rsa-sha1; c=nofws; User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.16) Gecko/20110307 Icedove/3.0.11 Xref: news.gmane.org gmane.linux.lib.musl.general:266 Archived-At: This is a multi-part message in MIME format. --------------000302000502000803090808 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit -------- Original Message -------- Subject: Re: [musl] Simple testing task - string functions Date: Sun, 10 Apr 2011 22:25:59 +0700 From: JIghtuse To: musl@lists.openwall.com I have some questions about my task. I've written a program to test malloc() function of musl. But.. 1. Can I use standart rand() and srand() functions to generate random size of allocated memory chunks, or I must to write another one random number generator? 2. Write a program which loops many times allocating and freeing memory So, when my program must to free memory? If it freeing just after its allocating, it always gets one chunk of memory. And how to define maximum size of memory chunk? I define it as MAX_SIZE / 1000, where MAX_SIZE is a maximum total allocated amount (about 8 * 10^8). Is it correctly? 3. I decided to generate a fragmentation diagram as a .dat file for plotting by gnuplot. Are you satisfied with it, or maybe write it as a simple text file with pseudo-graphic diagram? Thanks. I await your reply. UPD. I'm sorry for mixed tho threads, its really bad. -- Sincerely yours, JIghtuse. --------------000302000502000803090808 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit

-------- Original Message --------

Subject:	Re: [musl] Simple testing task - string functions
Date:	Sun, 10 Apr 2011 22:25:59 +0700
From:	JIghtuse <jightuse@gmail.com>
To:	musl@lists.openwall.com

I have some questions about my task. I've written a program to test 
malloc() function of musl. But..
1. Can I use standart rand() and srand() functions to generate random 
size of allocated memory chunks, or I must to write another one random 
number generator?
2.

Write a program which loops many times allocating and freeing memory

So, when my program must to free memory? If it freeing just after its 
allocating, it always gets one chunk of memory. And how to define 
maximum size of memory chunk? I define it as MAX_SIZE / 1000, where 
MAX_SIZE is a maximum total allocated amount (about 8 * 10^8). Is it 
correctly?
3. I decided to generate a fragmentation diagram as a .dat file for 
plotting by gnuplot. Are you satisfied with it, or maybe write it as a 
simple text file with pseudo-graphic diagram?
Thanks. I await your reply.


UPD. I'm sorry for mixed tho threads, its really bad.
-- 
Sincerely yours, JIghtuse.

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