Timers, threads, and Windows Services

jeff

Greetings;
Newbie here, please forgive my ignorance of the vb.net
threading model.

I am developing a windows service which is driven by a
variable number of timers. All timers invoke the same
event handler, and each invocation sends a command to
another service. What are the threading considerations
given this scenario?

1. What happens in the main service if two timers fire at
virtually the same time? Should the timer event handler
spin off a new thread to command the downstream service?

2. What happens if the downstream service receives
additional commands before the original is done
processing? Should the downstream service spin off
threads to process as well?

TIA

Nov 20 '05 #1

Subscribe Post Reply

1294

Cor

Hi Jeff,
An anouncement in this group
-------------------------------------------------------------------------
Do you have questions about how to create multi-threaded applications? Or do
you wonder about what those threads are actually doing? Then join members of
the Visual Basic and .NET Framework teams as they answer your questions
about using threading with Visual Basic .NET.

Date:
November 25, 2003

Time:
1:00 - 2:00 P.M. Pacific time
4:00 - 5:00 P.M. Eastern time
21:00 - 22:00 BST/BST
(For a list of local time zones relative to GMT, please see
http://msdn.microsoft.com/chats/timezones.asp.)

Outlook Reminder:
http://msdn.microsoft.com/chats/outl...s/VB_Nov25.vcs

Location:
http://msdn.microsoft.com/chats (then click the name of the chat to enter
the chat room)

For more information about Visual Basic .NET, see
http://msdn.microsoft.com/vbasic/
To see a list of upcoming chats or set a reminder for this chat, see
http://msdn.microsoft.com/chats.
For archives of previous chats, see
http://msdn.microsoft.com/chats/recent.asp.

Thanks!
Jason Cooke
VB.NET Team
========
This posting is provided "AS IS" with no warranties, and confers no rights.
You assume all risk for your use.
(c) 2003 Microsoft Corporation. All rights reserved.

Nov 20 '05 #2

Jeff

Thanks, but my corporate firewall doesnt allow your chat
server today. Can you post the question for me during
the chat? I'd really like to hear the answer

Thanks

-----Original Message-----
Hi Jeff,
An anouncement in this group
--------------------------------------------------------- ----------------Do you have questions about how to create multi-threaded applications? Or doyou wonder about what those threads are actually doing? Then join members ofthe Visual Basic and .NET Framework teams as they answer your questionsabout using threading with Visual Basic .NET.

Date:
November 25, 2003

Time:
1:00 - 2:00 P.M. Pacific time
4:00 - 5:00 P.M. Eastern time
21:00 - 22:00 BST/BST
(For a list of local time zones relative to GMT, please seehttp://msdn.microsoft.com/chats/timezones.asp.)

Outlook Reminder:
http://msdn.microsoft.com/chats/outl...inders/VB_Nov2 5.vcs
Location:
http://msdn.microsoft.com/chats (then click the name of the chat to enterthe chat room)

For more information about Visual Basic .NET, see
http://msdn.microsoft.com/vbasic/
To see a list of upcoming chats or set a reminder for this chat, seehttp://msdn.microsoft.com/chats.
For archives of previous chats, see
http://msdn.microsoft.com/chats/recent.asp.

Thanks!
Jason Cooke
VB.NET Team
========
This posting is provided "AS IS" with no warranties, and confers no rights.You assume all risk for your use.
(c) 2003 Microsoft Corporation. All rights reserved.

.

Nov 20 '05 #3

Similar topics

Services and Service timers

by: Jason | last post by:

Hi all just a quick question. I have a windows service with a "Catalogue" class. I would like to know: if i put two "ServiceTimer" objects in my service 1. Do they run in separate threads...

C# / C Sharp

Timers and Windows Service question

by: Nathan Kovac | last post by:

I have a feeling I am missing something simple, but I just can't find it. Perhaps someone can give me a lead on where to look. I will describe the issue then post my code to the web service. My...

C# / C Sharp

System.Timers.Timer in Global.asax

by: Mark Rae | last post by:

Hi, I've seen several articles about using System Timers in ASP.NET solutions, specifically setting them up in Global.asax' Application_OnStart event. I'm thinking about the scenario where I...

ASP.NET

Timers, threads, and windows services

by: jeff | last post by:

Greetings; Newbie here, please forgive my ignorance of the vb.net threading model. I am developing a windows service which is driven by a variable number of timers. All timers use the same...

Visual Basic .NET

Timers, Threads, and Windows Services

by: Jeff | last post by:

Hi; Ok, I finally got my firewall opened up to view the msdn chats, but too late for this particular discussion. Is it necessary to multi-thread windows services when commands received via...

Visual Basic .NET

System.Timers.Timer and InvokeRequired

by: Michael C# | last post by:

Hi all, I set up a System.Timers.Time in my app. The code basically just updates the screen, but since the processing performed is so CPU-intensive, I wanted to make sure it gets updated...

Visual Basic .NET

Timers

by: Maarten | last post by:

Hi In my aplication it seems that my timer slows down everything, is there a better and/or diferent way than using a timer Maarten

C# / C Sharp

System.Timers.Timer

by: cntams | last post by:

All, I have a Windows Service and it has one System.Timers.Timer that fires every 500 milliseconds. Now I have noticed that there's a bug in System.Timers.Timer when it's being used combined with...

.NET Framework

System.Timers.Timer, thread synchronization issues

by: Tony Gravagno | last post by:

I have a class that instantiates two Timer objects that fire at different intervals. My class can be instantiated within a Windows Form or from a Windows Service. Actions performed by one of the...

Visual Basic .NET

Migrating Website to Cloud - Emmanuel Katto

by: emmanuelkatto | last post by:

Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel

General

Looking to do Android software development, any suggestions? Is flutter better?

by: nemocccc | last post by:

hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?

General

Is that possible of reading the .csv file in column wise and the column have different lengths ?

by: Sonnysonu | last post by:

This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...

C / C++

What is ONU?

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,...

General

Changing the language in Windows 10

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...

Windows Server

Maximizing Business Potential: The Nexus of Website Design and Digital Marketing

by: jinu1996 | last post by:

In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...

Online Marketing

Discussion: How does Zigbee compare with other wireless protocols in smart home applications?

by: tracyyun | last post by:

Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...

General

AI Job Threat for Devs

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,...

Career Advice

Access Europe - Using VBA to create a class based on a table - Wed 1 May

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...

Microsoft Access / VBA