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BOUNCE rtl@rtlinux.org: Approval required: (fwd)
- To: rtl@rtlinux.org
- Subject: BOUNCE rtl@rtlinux.org: Approval required: (fwd)
- From: Der Herr Hofrat <der.herr@hofr.at>
- Date: Tue, 24 Jul 2001 21:55:00 +0200 (CEST)
>From owner-rtl Tue Jul 24 13:30:32 2001
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From: "Hai Quang Nguyen" <hqn01@uark.edu>
To: <rtl@fsmlabs.com>
Subject: RE: [rtl] thread-task
Date: Tue, 24 Jul 2001 14:36:06 -0500
Message-ID: <000001c11477$e3343dc0$62acb882@engr.uark.edu>
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The difference is probably the concept of task and thread. A task could
be a thread or a process depends on system.
In RT-Linux, the real-time OS - Real time Linux is a kernel process
which will spawn multiple threads as real-time tasks.
So, under RT-Linux real-time tasks are threads.
Yes, there is a task_struct for each thread, it's in scheduler header. I
have to say RT-Linux have a very neat way to do context switch :-)
-Hai
-----Original Message-----
From: owner-rtl@fsmlabs.com [mailto:owner-rtl@fsmlabs.com] On Behalf Of
Ahmet Mutlu
Sent: Monday, July 23, 2001 6:38 AM
To: rtl@fsmlabs.com
Subject: [rtl] thread-task
what is the difference of a task and thread,
in system level.
i mean is there a task_struct for each thread?
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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>The difference is probably the =
concept of
task and thread. A task could be a thread or a process depends on =
system.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>In RT-Linux, the real-time OS =
– Real
time Linux is a kernel process which will spawn multiple threads as =
real-time
tasks.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>So, under RT-Linux real-time tasks =
are
threads.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Yes, there is a task_struct for =
each
thread, it’s in scheduler header. I have to say RT-Linux have a =
very neat
way to do context switch </span></font><font size=3D2 color=3Dnavy =
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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>-Hai<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma'>-----Original =
Message-----<br>
<b><span style=3D'font-weight:bold'>From:</span></b> =
owner-rtl@fsmlabs.com
[mailto:owner-rtl@fsmlabs.com] <b><span style=3D'font-weight:bold'>On =
Behalf Of </span></b>Ahmet
Mutlu<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Monday, July 23, =
2001 6:38
AM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> rtl@fsmlabs.com<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [rtl] =
thread-task</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3D"Times New Roman"><span
style=3D'font-size:10.0pt'>what is the difference of a task and thread, =
</span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3D"Times New Roman"><span
style=3D'font-size:10.0pt'>in system level.</span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3D"Times New Roman"><span
style=3D'font-size:10.0pt'>i mean is there a task_struct for each =
thread?</span></font><o:p></o:p></p>
</div>
</div>
</body>
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