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by: Rich Sienkiewicz |
last post by:
Some classes, like Queue and SortedList, have a Synchronized method which gives a thread safe wrapper object for these classes. But the lock() statement does the same thing. Is there any rules as to when to use one and not the other? For instance, if I wanted to remove an item in a SortedList, would it be better to lock() it or do it via the Synchronized wrapper? Why choose one over the other
SortedList sl
lock(sl
sl.Remove(item)
O
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by: harborboy76 |
last post by:
Hi all,
First of all, just want to let you know that I'm coming from
Informix background, and we just recently migrated to DB2. It's
been a great new learning experience. For the time being, I have
some questions regarding LOCK TIMEOUT and its compatibility with
LOCK MODE WAIT in INFOMIX.
Last week, I just found out that the following statement was
complied and built in Stored Procedure
SET LOCK MODE TO WAIT 5;
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by: Sunny |
last post by:
Hi,
I can not understend completely the lock statement.
Actally what is locked:
1. the part of the code between {...}
or
2. the object in lock()
In the docs is written:
for 1: The lock keyword marks a statement block as a critical section by
obtaining the mutual-exclusion lock for a given object, executing a
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by: Nashat Wanly |
last post by:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnaskdr/html/askgui06032003.asp
Don't Lock Type Objects!
Why Lock(typeof(ClassName)) or SyncLock GetType(ClassName) Is Bad
Rico Mariani, performance architect for the Microsoft® .NET runtime
and longtime Microsoft developer, mentioned to Dr. GUI in an e-mail
conversation recently that a fairly common practice (and one that's,
unfortunately, described in some of our...
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by: ThunderMusic |
last post by:
Hi,
The subject says it all. Is there an equivalent, in VB.NET, for the C#
statement Lock(Object){}
Thanks
ThunderMusic
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by: adri4n |
last post by:
as wat ive mentioned in the title.. im would like to know whether the a
particular record/table is being locked in my program. some of the
methods which i would like to develop are as below:
Lock(KEY, SQLCODE)
- to create a lock. Returns 0 on success, 1 if a lock already exists
and -1 on failure with SQLCODE. There is no necessity to use IsLock()
for checking if a lock exists or not, just insert the record and check
for
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by: cwho.work |
last post by:
Hi!
We are using apache ibatis with our MySQL 5.0 database (using innodb
tables), in our web application running on Tomcat 5. Recently we
started getting a number of errors relating to
java.sql.SQLException: Deadlock found when trying to get lock; Try
restarting transaction message from server: "Lock wait timeout
exceeded; try restarting transaction";
We get such errors generally on inserts or updates while applying a
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by: jeff.ranney |
last post by:
Hi all.
I wrote this C# code:
lock(this)
{
/ /write to a file
}
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by: Samuel R. Neff |
last post by:
When is it appropriate to use "volatile" keyword? The docs simply
state:
"
The volatile modifier is usually used for a field that is accessed by
multiple threads without using the lock Statement (C# Reference)
statement to serialize access.
"
But when is it better to use "volatile" instead of "lock" ?
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by: senthiltkp |
last post by:
Hi,
I'm new to DB2 and have little knowledge on database.
i'm facing a Spin lock issue in db2..
Thread here am talking is Java thread..(Sepearte process)
The spin Lock is acquired to ensure Same thread Can’t be stated again.
In our Application each thread is mapped to row .So lock is acquired on a row.
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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...
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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 tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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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,...
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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 protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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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...
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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...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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