Get process threads information

[giampaolo]

From zip...@gmail.com on November 12, 2010 09:30:32

What steps will reproduce the problem?  
1. 2. 3. 

What is the expected output?  


What do you see instead?  
it is a exciting py module i have used... like some days ago,it is slow to use 
the WMI to see the processes infomation...

and if you can add the function which get_cpu_percent of a thread it will be 
better like p.get_cpu_percent(threadID-->in the p process) 

What version of psutil are you using? What Python version?  
1.3   and 2.5.1 

On what operating system? Is it 32bit or 64bit version?  
XP  32bit

Original issue: http://code.google.com/p/psutil/issues/detail?id=134

[giampaolo]

From g.rodola on November 12, 2010 01:40:55

Status: WaitingForReview

[giampaolo]

From jlo...@gmail.com on November 12, 2010 05:53:11

Some references: 

Windows 
http://stackoverflow.com/questions/1393006/how-to-get-the-cpu-usage-per-thread-on-windows-win32
 http://www.codeproject.com/KB/system/processescpuusage.aspx Linux (possibly 
BSD if the C code works) http://108leaves.com/codediary/?p=1 OS X 
http://stackoverflow.com/questions/1455320/how-to-get-the-cpu-usage-per-thread-on-mac-osx

[giampaolo]

From jlo...@gmail.com on November 12, 2010 12:07:10

Summary: Support for per-thread CPU utilization
Labels: -Type-Defect Type-Enhancement

[giampaolo]

From zip...@gmail.com on November 14, 2010 01:45:38

thank you for reply :)
.
.

[giampaolo]

From g.rodola on November 14, 2010 15:59:41

We should first have a "get_threads()" function returning a list of objects 
(I'd say a namedtuple) including at least thread id, user and kernel times 
information, and possibly also other information.
From there, adding a get_threads_percent() returning a namedtuple including 
thread id and percentage usage, but I'm not sure I like this kind of API (for 
now at least).

I'd say we better focus on implementing get_threads() first, and change the 
subject/discussion of this issue in accordance.
get_threads_percent() is something we might think about later.

Note: get_threads() should deprecate current get_num_threads().

Summary: Get process threads information

[giampaolo]

From zip...@gmail.com on November 16, 2010 00:03:03

how to Enum threads in a process? 
http://www.tech-archive.net/Archive/VC/microsoft.public.vc.language/2004-05/0509.html
 it seems that ToolHelp32 in the Kernel32.dll which have some functions like
CreateToolhelp32Snapshot+Thread32First+Thread32Next 

others said it can enum threads in a process 

there is also some c++ code to enum threads in above site...

but it is hard to use c++ or dll with python...

[giampaolo]

From g.rodola on November 16, 2010 01:13:02

Yes, we are already using CreateToolhelp32Snapshot, Thread32First and 
Thread32Next currently to get the number of threads per-process.
I still haven't  looked into it properly, but retrieving other information from 
threads on Windows seems quite straightforward.

[giampaolo]

From g.rodola on November 16, 2010 12:43:18

Implemented on Linux in r821 .
A new Process.get_threads() method is available returning a namedtuple as such:

>>> p = psutil.Process(os.getpid())
>>> p.get_threads()
[thread(id=3318, user_time=0.01, system_time=0.01)]

Status: Started
Labels: Progress-1in4

[giampaolo]

From g.rodola on November 16, 2010 13:54:45

Implemented on Windows in r822 .

Labels: -Progress-1in4 Progress-2in4

[giampaolo]

From g.rodola on November 19, 2010 14:21:51

Labels: Milestone-0.2.1

[giampaolo]

From g.rodola on November 20, 2010 11:53:41

Implemented for FreeBSD in r827 thanks to: 
http://fxr.googlebit.com/source/usr.bin/procstat/procstat_threads.c?v=8-CURRENT 
It turns out procstat utility (wasn't aware of it) has a lot of useful and well 
written code we can borrow (e.g. process files/connections which we can 
reimplement in C).

Labels: -Progress-2in4 Progress-3in4

[giampaolo]

From zip...@gmail.com on November 21, 2010 20:04:59

nice update!...

it is the best python module to get process infomatinon i have found...quickly 
and fully...

.
.
.

[giampaolo]

From g.rodola on February 17, 2011 06:02:08

Implemented for OSX in r922 .
It seems we cannot determine the thread ids, so I used an incremental bogus 
value as a replacement.

Status: FixedInSVN
Labels: -Progress-3in4 Progress-4in4

[giampaolo]

From g.rodola on March 20, 2011 14:55:37

Status: Fixed

[giampaolo]

From g.rodola on March 02, 2013 03:56:48

Updated csets after the SVN -> Mercurial migration: r821 == revision 
aa0b3d808dc8 r822 == revision bd431637453d r827 == revision b870cf4e47e6 r922 
== revision e563f0bf792e