Hi,
google doesn't give me anything on this, so I have to ask:
I've got a xmlrpc-server running using twisted. Using the cookbook-recipe
for daemonizing, it stores a file with its pid when in daemon mode.
Now I want to remove that file when the server is shutdown - this boils down
to the twisted reactors run()-method beeing terminated.
Unfortunately, twisted sets its on signal handlers, so killing my app
doesn't allow me to perform cleanup-code. I'm sure there are good reasons
for that, and I'm actually not interested in signals especially - but there
must be some way to install a sort of callback when the reactor gets down,
for whatever reason.
But as I said, no docs on that.
--
Regards,
Diez B. Roggisch 1 4060
Diez B. Roggisch wrote: Hi,
google doesn't give me anything on this, so I have to ask:
I've got a xmlrpc-server running using twisted. Using the cookbook-recipe for daemonizing, it stores a file with its pid when in daemon mode.
Now I want to remove that file when the server is shutdown - this boils down to the twisted reactors run()-method beeing terminated.
Unfortunately, twisted sets its on signal handlers, so killing my app doesn't allow me to perform cleanup-code. I'm sure there are good reasons for that, and I'm actually not interested in signals especially - but there must be some way to install a sort of callback when the reactor gets down, for whatever reason.
But as I said, no docs on that. http://twistedmatrix.com/documents/c...wistd-man.html http://twistedmatrix.com/documents/c...to/application
Jp This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
by: Gary Robinson |
last post by:
In some code we're writing we're making an assumption, and I'd like to
confirm that the assumption is valid.
Suppose a signal arrives while a file is being written, and the signal
handler explicitly raises a SystemExit exception.
My understanding is that the C-level I/O code will continue and the signal
won't be processed until the end of the atomic python interpreter
instruction that invoked that C code.
|
by: steffen staehle |
last post by:
Hi,
I'm writing a server process which spawns child processes via fork
This server process should keep track of the number of children stil
running, do the necessary cleanup to avoid zombies, etc.
In the beginning I thought I had to use the POSIX module, using SigSet
SigAction, sigprocmask etc. for a rather paranoid approach.
Then I've rea
|
by: lpw |
last post by:
I have dilligently reviewed FAQ-lite Section 3.2, "How do I pass a
pointer-to-member-function to a signal handler, X event callback, system
call that starts a thread/task, etc." The only suggestion on how to deliver
a signal to an object is to do it via a global variable and a wrapper
function, a technique that is generally a Bad Idea (due to the usage of a
global variable). I understand that this ng is dedicated to the discussion
of...
|
by: Martin McCormick |
last post by:
A C program contains several signal statements to remove a
lock file if the program gets killed:
/*Set up interrupt handler to catch ctrl-C so that lock file can be removed.*/
signal(SIGINT,crash);
signal(SIGBUS,crash);
signal(SIGSEGV,crash);
This part works. Those signals cause the "crash.c" module to
run and get rid of the lock. Is there a standard way to also print
|
by: Jackie |
last post by:
Hi everyone,
I'd like to know when and how signals are used (e.g. SIGFPE, SIGABRT,
SIGTERM, SIGSEGV, SIGINT)? Thank you so much.
| |
by: Amit Sharma |
last post by:
Hi,
I want to write a program, where until we give the value of j as
non zero, it should go on asking us values of i and j, displaying the
message "Division by zero: Floating point exception" for every input
of j as zero. Once we give the value of both i and j as non-zero, it
displays i/j and terminates.
This is the sample code i tried:
#include <signal.h>
void sig_s(int signo);
|
by: stalex |
last post by:
Hi all,
I wrote the following code since I want to try using a decorator to
install signal handler:
## The test.py script
#################
import os
import time
import signal
|
by: david |
last post by:
I'm developing a program that runs using an asyncore loop. Right now
I can adequately terminate it using Control-C, but as things get
refined I need a better way to stop it. I've developed another
program that executes it as a child process using popen2.Popen4(). I
was attempting to use signals to stop it (using os.kill()) but I keep
running into a problem where sending the signal causes an infinite
loop of printing the message...
|
by: Yves Dorfsman |
last post by:
I did a few tests with this script:
class byebye:
def __del__(self):
print 'Bye, bye...'
x = byebye()
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
|
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
| |
by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
| |
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
| |