RE: Memory leak in uClinux 2.4.24
"Ken Kerr" <[email protected]> Mon, 21 Jun 2010 10:05:54 -0400
| Newsgroups | gmane.comp.hardware.motorola.microcontrollers.coldfire |
|---|---|
| Message-ID | <967744224C44F641AEC562017979FDA1010C6D0E@DOMAINSERVER.engineering.synchrony.com> |
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We set the date as follows (no busybox) :
=20
sprintf(msg, "date %s", dateTimeStr); where dateTimeStr =3D
MMDDHHMMYYYY
system(msg);
=20
Ken Kerr
Synchrony, Inc
(540) 444-4226
=20
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From: [email protected] [mailto:[email protected]]
On Behalf Of Petersen, Joel (GE Healthcare)
Sent: Monday, June 21, 2010 9:50 AM
To: Ken Kerr
Subject: [ColdFire] Memory leak in uClinux 2.4.24
=20
Hello
=20
I have a system using uClinux 2.4.24 on Coldfire 5282, slaved to a host
PC. I was investigating a problem when I found that the way I was
setting the system date and time from the host PC with my application
generated a memory leak. The application memory space grows by 96 bytes
on every call. I can't tell if the memory leak is the problem I'm
chasing, but I want to fix the leak.
=20
The call I use is:
sprintf(msg, "busybox date %s", dateTimeStr);
system(msg);
=20
For testing, I changed the call to:
system("busybox echo test");
and I still saw the memory leak.
=20
It looks like calling busybox is the problem. Upgrading uClinux (e.g. to
2.6.x) is not an option. I took a look at moving the busybox date source
to my application, but found that the stime( ) call wouldn't run in user
space.
=20
1. Is this a known bug in busybox?
2. Am I invoking busybox wrong?
3. Is there an alternative way to set the date and time?
4. I have my own drivers. Can I set date and time from a driver?
=20
Thanks in advance.
Joel Petersen
GE Healthcare
=20
=20
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<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>We set the date as follows (no busybox) =
:<o:p></o:p></span></p>
<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=3DMsoNormal> <span =
style=3D'font-size:10.0pt;font-family:
"Arial","sans-serif"'>sprintf(msg, "date %s", =
dateTimeStr); where
dateTimeStr =3D MMDDHHMMYYYY</span><o:p></o:p></p>
<p class=3DMsoNormal> <span =
style=3D'font-size:10.0pt;font-family:
"Arial","sans-serif"'>system(msg);</span><o:p></o:p></p>
<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Comic =
Sans MS";
color:#1F497D'>Ken Kerr</span><span =
style=3D'color:#1F497D'><o:p></o:p></span></p>
<p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Synchrony, Inc</span><span =
style=3D'font-size:11.0pt;font-family:
"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>(540) 444-4226</span><span =
style=3D'font-size:11.0pt;font-family:
"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> <o:p></o:p></span></p>
<p class=3DMsoNormal><i><span =
style=3D'font-size:7.5pt;font-family:"Courier New";
color:#1F497D'>This email may contain information that is proprietary,
privileged, and/or confidential and is intended exclusively for the =
person(s)
to whom it is addressed. Any use, copying, retention, or disclosure by =
any
person other than the intended recipient or the intended recipient's =
designees
is strictly prohibited. If you are not the intended recipient or their
designee, please notify the sender immediately by return email and =
delete all
copies of this email.<o:p></o:p></span></i></p>
<p class=3DMsoNormal><span =
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<p class=3DMsoNormal><span =
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0in 0in 0in'>
<p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
[email protected] [mailto:[email protected]] <b>On =
Behalf
Of </b>Petersen, Joel (GE Healthcare)<br>
<b>Sent:</b> Monday, June 21, 2010 9:50 AM<br>
<b>To:</b> Ken Kerr<br>
<b>Subject:</b> [ColdFire] Memory leak in uClinux =
2.4.24<o:p></o:p></span></p>
</div>
</div>
<p class=3DMsoNormal><o:p> </o:p></p>
<div>
<p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>Hello</span><=
o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>I
have a system using uClinux 2.4.24 on Coldfire 5282, slaved to a host =
PC. I was
investigating a problem when I found that the way I was setting the =
system date
and time from the host PC with my application generated a memory =
leak. The
application memory space grows by 96 bytes on every call. I can't tell =
if the
memory leak is the problem I'm chasing, but I want to fix the =
leak.</span><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>The
call I use is:</span><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal> <span =
style=3D'font-size:10.0pt;font-family:
"Arial","sans-serif"'>sprintf(msg, "busybox date %s", =
dateTimeStr);</span><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal> <span =
style=3D'font-size:10.0pt;font-family:
"Arial","sans-serif"'>system(msg);</span><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>For
testing, I changed the call to:</span><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal> <span =
style=3D'font-size:10.0pt;font-family:
"Arial","sans-serif"'>system("busybox echo =
test");</span><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>and
I still saw the memory leak.</span><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>It
looks like calling busybox is the problem. Upgrading uClinux (e.g. to =
2.6.x) is
not an option. I took a look at moving the busybox date source =
to my
application, but found that the stime( ) call wouldn't run in user =
space.</span><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal> <o:p></o:p></p>
</div>
<div>
<div>
<p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>1.
Is this a known bug in busybox?</span><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>2.
Am I invoking busybox wrong?</span><o:p></o:p></p>
</div>
<p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>3.
Is there an alternative way to set the date and =
time?</span><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>4.
I have my own drivers. Can I set date and time from a =
driver?</span><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>Thanks
in advance.</span><o:p></o:p></p>
</div>
<p><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>Joel</span>&n=
bsp;<span
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>Petersen</spa=
n><o:p></o:p></p>
<p><span style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>GE
Healthcare</span><o:p></o:p></p>
<p> <o:p></o:p></p>
<div>
<p class=3DMsoNormal> <o:p></o:p></p>
</div>
<p class=3DMsoNormal>[email protected] Send a post to the list.
[email protected] Join the list. [email protected] =
Join the
list in digest mode. [email protected] Leave the =
list.<o:p></o:p></p>
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