C++ :: Unload A DLL Module And Leave All Critical Section On It
Jul 9, 2013
I am facing an issue with re entrance of one of my dll module. I had MLClient.dll which load in to program using LoadLibrary(MLClient.dll)
boost:: shared_ptr will add a lock() on this Load & initialization of library.
Due some of my requirements I want to un initialize this library and unload.?
How can i do the same with windows functions.?
How can i leave the lock on library using boost::shared_ptr.?
un load if there is a lock() on it ?
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Mar 1, 2013
If any exception occurs in critical section code then what sort of issue which we see in terms of synchronization objects?
Before and after the critical section code, Mutex is locked and unlocked. But if any exception occurs then the waiting thread will be waiting for resource to be freed as Mutex is not unlocked due to the exception.
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Dec 11, 2012
I am using a thread in my application .. A DLL is written for In and Out instructions for hardware ICS and to read FIFO.
My code is
CCriticalSection crdll , crsec ;
UINT ThreadReceiveData(LPVOID param) {
for ( ; ; ) {
if (bTerminate) break; // bTerminate = 1 in Doc template destructor
crdll.Lock();
[Code] ....
I am confused , how and when I should use Ctitical Section ? The program works fine but I am not happy as this is main routine of the program and I have not understood it properly.
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Oct 25, 2013
I am trying to make a random number generator to simulate a critical hit if the number generated is from 0-critical amount. However, every time i run the code, despite being within the parameters set by the if statements, it always runs through as a critical hit and never a regular hit.
#include <iostream>
#include <iomanip>
#include <ctime>
#include <cstdlib>
using namespace std;
int main(){
srand((unsigned)time(0));
[Code]...
There are four attempts to save time in getting a good result.
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Mar 2, 2014
I'm trying to use semaphores on three different processes so that each process won't enter the critical region at the same time and also go in the order: process 1 -> process 2 -> process 3. However, everytime i run the code the process 3 keeps going before process 2.
Here's my code:
#include <stdio.h>
#include <sys/types.h>
#include <sys/ipc.h>
[Code].....
the processes should print out like this:
process 1: 100000
process 2: 300000
process 3: 600000
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Feb 28, 2013
how to produce a period signal that lasts 0.100 ms that is 35% red and 65% green using a bi-colour LED and the timer module?
while(ReadTimer0() < (unsigned int)165)
Its using this: OpenTimer0(TIMER_INT_OFF & T0_SOURCE_INT & T0_16BIT & T0_PS_1_32);
So does that mean that the period signal is 165 * 32 * 4/32 = 660 = 66%? I really just need to know how to calculate the period signal to produce 35% red and 65% green..
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Nov 3, 2013
Code:
/*Currency Conv Control Module*/
#include <stdio.h>
#include "currencyconv.h" /* defines constants, declares functions */
int main(void) {
float us_dollars;
float currency;
int user_input;
[Code] ....
This is $$ converter program I created that is split up over 3 files. It takes the users input in US Dollars and converts it to the currency selected. When executing the program I am encountering a small problem. It actually isn't converting anything and returns 0.00 dollars.
I would like for it to convert the amount entered into the currency selected. I would also like to add in the print statement the type of currency the user has selected.
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Oct 21, 2014
I am in need to convert some C# code into C++ equivalences. But I don't want to spend the efforts to do so. Is there an handy way to convert an existing code of C# into C++ (unmanaged code)?
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Nov 7, 2013
I want to have my program only clear a section of the lines displayed on screen. For example if:
Welcome. Enter : (cin)
Choose a mode: (cin)
(etc...)
Clear above lines (for example) 1 and 2?: (cin)
//now I want the program to do that. How?
Overall, I want to be able to system ("cls") only certain lines.
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Sep 7, 2013
Exmaple:
112121276783621784678236478236478623784672364782367846237846782364782367846238 + 783627846782364786237846782364782367846237846782364782367846237846237864782367846238
It should be efficient and fast. It is useful to calculate the Factorial 100000, and then I calculate the number of the module.
Example:
132142344564378657834657834657863785634786578346578346785634785678653478 % 124623874
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Nov 22, 2014
Im problem with parsing. I read file line by line and i store another class bu when i parse the line last word gone example "I study algebra and discrite math" math didnt store.Why ? i want to calculate index section for document how can i solve this problem??
Code:
void DocumentIndex::parse(){
size_t pos = 0; //position
pos =line.find(" ");
while( ( pos = line.find(" ") ) != std::string::npos )
{
[code]....
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Jul 20, 2013
I am having trouble with the implementation section of my code. The trouble I am having is with the """"string Name::RevereUsingString()""" function/method. I keep getting an error saying that """"control reaches end of non-void function"""". The two void function below the ""string Name::RevereUsingString()"" fuction/method are ok and ready to be worked on.
How to implement the ""string Name::RevereUsingString()"" correctly in the implementation section?
#include <iostream>
#include <string>
using namespace std;
//-------------Class Section------------------------------------
class Name {
[Code] .....
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Jul 10, 2013
I have faced a strange problem in File Save Routine. I have written a module to save data to binary file . I have designed a structure and put information in that and save it to file . I save multiple such records one after other. I use fwrite , fflush instructions.
The module is working fine. I have saved near about 35 such files. But in one file , the module has saved Blank Records. The file size if perfect but the file is totally blank. It has happened for only one file but need to know the reason.
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Nov 15, 2014
I'm trying to create a piece of code similar to the code I have created on the new username section which will allow me to put certain restrictions on how my new users log in i.e the password length and the the need for a numeric digit. I also need storing my new members details in my previously created array.
case 'N': //Set up new user
Console.Write("
Create new Member details
");
Console.Write("
Create new Username
must be 8 characters, all letters, 1 Capital letter");
[Code] ....
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Nov 25, 2013
The program is showing zero in output section ....
Code:
#include <iostream>
#include <cstdio>
#include <fstream>
#include <string>
#include <iomanip>
using namespace std;
const int SZ = 55;
[Code] ....
The output:
Code:
First Last Employee Hours Rate Regular Overtime Gross
Name Name Number Worked of Pay Pay Pay Pay
==============================================================
Jane Adams A1234 40.00 10.00 0.00 0.00 0.00
Mary Lincoln L8765 50.00 10.00 0.00 0.00 0.00
Martha Washington W7654 25.50 10.85 0.00 0.00 0.00
John Adams A9876 52.00 15.75 0.00 0.00 0.00
George Washington W1235 45.00 25.00 0.00 0.00 0.00
Abraham Lincoln L9087 40.25 55.00 0.00 0.00 0.00
William Tell T9876 30.00 9.75 0.00 0.00 0.00
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Oct 22, 2014
I know the user installation must involve some registry manipulations and some other trickery. But the ActiveX way seems to be more modular.
Is it worthwhile to separate the charting modules from the exe and make an activex dll for this purpose?
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