473,387 Members | 1,465 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,387 software developers and data experts.

file status question

hi, everyone

I am running many parallel programs, and for each time I need to update the same
file from time to time. Before one program reaches the file, i have to garantee the other simulations are not updating it. So does anyone know how to check the file' status before reach it? And how to make a short pause until the other simulations finishe the updating?
Thanks a lot!!!

han
Apr 6 '07 #1
1 1639
sicarie
4,677 Expert Mod 4TB
hi, everyone

I am running many parallel programs, and for each time I need to update the same
file from time to time. Before one program reaches the file, i have to garantee the other simulations are not updating it. So does anyone know how to check the file' status before reach it? And how to make a short pause until the other simulations finishe the updating?
Thanks a lot!!!

han
I would recommend a Singleton design pattern for that specific file, and have that contain a boolean flag, something like b_isOpen .
Apr 8 '07 #2

Sign in to post your reply or Sign up for a free account.

Similar topics

0
by: Victor Engmark | last post by:
I am quite new to XForms, but I need to do a feasibility study to see whether a system I'm supposed to make can be done without any scripting or programming language (to make it simple and not need...
3
by: Sobhan | last post by:
Hi all, I am writing a program in C++ in which I need to read a data file and export to the excel.The Data in the file in CSV format. Values in the .txt file are as follows: "a","b","c"...
0
by: Lokkju | last post by:
I am pretty much lost here - I am trying to create a managed c++ wrapper for this dll, so that I can use it from c#/vb.net, however, it does not conform to any standard style of coding I have seen....
4
by: Kenneth Keeley | last post by:
Hi, I have a page that uploads files to my server and I wish to display a "Please wait while uploading" page to the user while the file is uploading. I have been able to redirect the user once the...
13
by: Sky Sigal | last post by:
I have created an IHttpHandler that waits for uploads as attachments for a webmail interface, and saves it to a directory that is defined in config.xml. My question is the following: assuming...
1
by: raj.sinha | last post by:
I have to "PUT" data to a Unicode file... a file that has the "FF FE" mark at the beginning of the file. How do i do that. What HTTP header do i need to send so that the data is stored in the...
15
by: Gan Quan | last post by:
I'm writing a c++ program that has many (100+) threads read/write files simultaneously. It works well if not considering the efficiency. The file i/o seems to be the bottleneck. This is my code...
3
by: SM | last post by:
Hello, Im trying to access elements in my XML file using the JavaScript DOM but i'm not sure how. I use AJAX to access the XML and then use the responseXML property to access the XML file data. I...
4
by: BorisBoshond | last post by:
Hi all, Hope someone is able and willing to help me with following problem. I received a xsd file from another company, our company i supposed to return xml based on that xsd. Problem is that I...
6
by: Ramesh | last post by:
Hello, I am using the ofstream class to create a text file with keys and values like: Key1=Value10 Key2=Value15 Key3=Value20 In case I need to set a new value for Key2, say value50 - I am...
0
by: taylorcarr | last post by:
A Canon printer is a smart device known for being advanced, efficient, and reliable. It is designed for home, office, and hybrid workspace use and can also be used for a variety of purposes. However,...
0
by: aa123db | last post by:
Variable and constants Use var or let for variables and const fror constants. Var foo ='bar'; Let foo ='bar';const baz ='bar'; Functions function $name$ ($parameters$) { } ...
0
by: ryjfgjl | last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
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...
0
jinu1996
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...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.