|
Hi,
I created 1 worker thread AFxBeginThread and 4 UI Thread via new CWinThread
However when I look at the thread display under debug Visual Studio display all threads as Worker Threads
Thanks
|
|
|
|
|
And do you have a question, related to C++?
|
|
|
|
|
I thought about posting this in a different forum
But the concept of UI threads and worker threads
is MFC
|
|
|
|
|
I never quite placed much attention as to how threads are labeled in the debug display but... does it really matter? A UI thread is really just a label for a thread, it differs only in the extra functionality that comes from the framework around it, so does the label really make a difference? If it works fine why are you worried about the label the debugger is using?
|
|
|
|
|
ForNow wrote:
I created 1 worker thread AFxBeginThread and 4 UI Thread via new CWinThread
Maybe I'm misunderstanding your intent here, but worker threads and UI threads are both created using AfxBeginThread(). The difference is whether the thread has a message pump or not.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
|
|
|
|
|
Sorry you are right the different UI
Has CWinThread::Run. While workers have a thread proc
|
|
|
|
|
........
modified 26-Feb-13 6:47am.
|
|
|
|
|
Why are you using CStrings for your data buffers, and why are you trying to convert the file content with wcstombs()? Use the BYTE (unsigned char) type for your data buffer, and read the files in binary mode.
|
|
|
|
|
|
I already told you how to do it. Do not use CString it will not work. And do not convert the file contents, it will leave you with corrupt data. A file is just a stream of bytes and in moving it from one location to another you should process it as such.
|
|
|
|
|
Message Closed
modified 15-Feb-13 1:10am.
|
|
|
|
|
If there is still a problem in this code then you need to run it through your debugger and isolate the point of failure. We cannot guess what is happening without more information.
|
|
|
|
|
|
|
Hi,
I'm hitting a snag as I try to read back an array which has been written to a text file. Here's the relevant part of the code:
if((fp=fopen("myfile","r"))==NULL)
{
printf("Unable to open file.\n");
exit(1);
}
for(j=0;j<6;j++)
{
for(l=0;l<7;l++)
{
k=fgetc(fp);
if(k==",") break;
str2[j][l]=k;
}
}
fclose(fp);
for(j=0;j<6;j++)
{
for (l=0;l<7;l++)
{
printf("%c", str2[j][l]);
}
}
This is generating an error:
[Warning] comparison between pointer and integer.
Though it runs, it is revealing that the break code which checks for a comma is not functioning as the compiler warns. Why is it claiming this is a pointer? Why is it saying anything about an integer when I've deliberately cast k as a character?
Thanks for any input.
------
Update: The problem was solved by: (a) changing the double quotes to single quotes (apostrophes) and (b) switching
if(k==",") break; below the assignment. In order to match the file derived string with one defined in code I also had to modify it:
str2[j][strlen(str2[j]-1]='\0'; as there is something foreign added in the file transfer process.
Thanks, and if there is a mark as solved button I couldn't find it
modified 14-Feb-13 16:08pm.
|
|
|
|
|
Try this:
k=fgetc(fp);
if(k==',') break;
Hope that will work.
|
|
|
|
|
Hi,
Thanks for the reply.
As far as I can see that's what I have except without the assignment to the array:
str2[j][l]=k
but that is basically what I'm trying to accomplish. The printing at the end is just to confirm that the file was successfully written to the array.
|
|
|
|
|
Replace the double-quotes in your comparison with single-quotes. In C and C++, double-quotes mean a pointer to a string of characters, but single-quotes mean a character literal.
|
|
|
|
|
Hi, thanks for your response. That helped. I also changed the control in the inside printf loop to
for(l=0;*(str2[j]+l);l++)
Now it's compiling with no warnings and is reading back pretty good text, though there is some stray characters after some of the words in the test text.
|
|
|
|
|
Why are you making life so complicated for yourself? Use a tokeniser such as strtok()[^].
|
|
|
|
|
Thanks Richard,
I'm going to try to track down the errors in this code first and then experiment with this tokenizer. At this point I'm trying to get a really granular understanding of C which even means reinventing the wheel at times, just for my own edification
|
|
|
|
|
Just glancing at your code I would suggest using proper names for variables. Also, read up on the difference between a character and a string.
|
|
|
|
|
Thanks.
This is just a test of concept program so I'm not doing 'real' variable names. As a former VB person I'm still in the CCAC (code cuss and cry) phase of learning C
modified 14-Feb-13 16:13pm.
|
|
|
|
|
Jeffrey Webster wrote: At this point I'm trying to get a really granular understanding of C which even means reinventing the wheel at times, just for my own edification
A good strategy. 
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
|
|
|
|
|
Assume that there are 8 Modules which one of them is Supervisor. They are implemented in C++ classes, so we have 1 Object of Supervisor and more than one Object of other module.
The Supervisor assign Tasks to each other module, and whenever they finished their tasks or faced with a problem, they should inform the Supervisor.
I think that the best way to implement this behavior is Interruption or something like that.
Now, I want to know how to implement it or is there any solution for this problem?
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
