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How to check if there exists a process with a given pid in Python?
...sutil module:
psutil (python system and process utilities) is a cross-platform library for retrieving information on running processes and system utilization (CPU, memory, disks, network) in Python. [...] It currently supports Linux, Windows, OSX, FreeBSD and Sun Solaris, both 32-bit and 64-bit...
What are the differences between the threading and multiprocessing modules?
...ue, Array, and ctypes types.
Processes are not subject to the GIL.
On some platforms (mainly Windows), processes are much more expensive to create and destroy.
There are some extra restrictions on processes, some of which are different on different platforms. See Programming guidelines for details....
Total memory used by Python process?
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psutil is cross platform and can return the same values as the ps command line tool: pythonhosted.org/psutil/#psutil.Process.memory_info
– amos
Jul 3 '14 at 21:38
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Eclipse hangs on loading workbench
... eclipse. You might want to adapt the script to your needs. If you add new platforms please edit the script right in this answer.
#!/bin/bash
# WF 2014-03-14
#
# ceclipse:
# start Eclipse cleanly
#
# this script calls eclipse with -clean and -clearPersistedState
# if an instance of eclipse is...
Do spurious wakeups in Java actually happen?
... it's in the spec (as a possibility) because of limitations of some of the platforms which Java gets deployed on? although I may be wrong!
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follo...
Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?
...'s not faster.
If you really care, compile with assembler output for your platform and look to see.
It doesn't matter. This never matters. Write your infinite loops however you like.
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impro...
Test if executable exists in Python?
... find it useful to add this to the top of the function: import sys; if sys.platform == "win32" and not program.endswith(".exe"): program += ".exe". This way under Windows you can refer to either "calc" or "calc.exe", just like you could in a cmd window.
– Kevin Ivarsen
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Ternary operator is twice as slow as an if-else block?
...T them, then lots of times for more accuracy
Use Stopwatch
Results with /platform:x64 (without the "ignore" lines):
if/else with 1 iterations: 17ms
conditional with 1 iterations: 19ms
if/else with 1000 iterations: 17875ms
conditional with 1000 iterations: 19089ms
Results with /platform:x86 (wit...
Why does Maven warn me about encoding?
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I don't get why the fallback is using platform encoding instead of UTF-8. Legacy support?
– msa
Feb 11 at 21:21
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了解 Boost Filesystem Library - C/C++ - 清泛网 - 专注C/C++及内核技术
...种方法在实际中各有优缺点。考虑以下情况：您希望操作软件所创建的目录，此目录在 UNIX 和 Linux 系统上位于 /tmp/mywork，而在 Windows 上位于 C:\tmp\mywork。可以采用多种方法处理问题。清单 3 显示了面向本机格式的方法。
清单 3. ...