hello, I have protected a std::queue's access functions, push, pop, size, with boost::mutexes and boost::mutex::scoped_lock in these functions from time to time it crashes in a scoped lock the call stack is this: 0 0x0040f005 boost::detail::win32::interlocked_bit_test_and_set include/boost/thread/win32/thread_primitives.hpp 361 1...
Is there any way to convert C++ program into ASP.NET?Thanx for reply in advance. ...
BaseClass.h class BaseClass { ... }; SubClass.h #include "BaseClass.h" class SubClass : public BaseClass { ... }; MyApp.h class BaseClass; class SubClass; class MyApp { SubClass *pObject; BaseClass *getObject() { return pObject; } }; I get a compiler error: error C2440: 'return' : cannot convert from 'SubClass *' to '...
I'm using Visual Studio 2010, and in my C++/CLI project there are two Code Analysis settings: Enable Code Analysis on Build Enable Code Analysis for C/C++ on Build My question is about the second setting. I've enabled it and it takes a long time to run and it doesn't find much. Do you recommend enabling this feature? Why? ...
Hello! This is a more concrete question that is connected with my previous one. I have an application that uses a timer. The code is written the way the my WM_TIMER handler call a DialogBoxParam(...) with some custom message handler (let's call it DlgProc). This is done somewhat the following way: case WM_TIMER: { // Ro...
Since I was 12, I was always wondering how I can make a function which calculates the power (e.g. 23) myself. In most languages these are included in the standard library, mostly as pow(double x, double y), but how can I write it myself? I was thinking about for loops, but it think my brain got in a loop (when I wanted to do a power wit...
Is that Destructor is enough or do I have to iterate to delete the new nodes?? #include "stdafx.h" #include<iostream> using namespace std; struct node{ int row; int col; int value; node* next_in_row; node* next_in_col; }; class MultiLinkedListSparseArray { private: char *logfile; no...
I need to create a Windows Mobile Application (WinMo 6.x - C#) which is used to encrypt/decrypt files. However it is my duty to write the encryption algorithm which is AES-128 along with XTS as the mode of operation. RijndaelManaged just doesn't cut it :( Very much slower than DES and 3DES CryptoServiceProviders :O I know it all depend...
I want to allocate memory on the stack. Heard of _alloca / alloca and I understand that these are compiler-specific stuff, which I don't like. So, I came-up with my own solution (which might have it's own flaws) and I want you to review/improve it so for once and for all we'll have this code working: /*#define allocate_on_stack(pointe...
How do i add these sections to certificate (i am manualy building it using C++). X509v3 Subject Key Identifier: A4:F7:38:55:8D:35:1E:1D:4D:66:55:54:A5:BE:80:25:4A:F0:68:D0 X509v3 Authority Key Identifier: keyid:A4:F7:38:55:8D:35:1E:1D:4D:66:55:54:A5:BE:80:25:4A:F0:68:D0 Curently my code builds sertificate wel...
Will a compiler optimize tihs: bool someCondition = someVeryTimeConsumingTask(/* ... */); for (int i=0; i<HUGE_INNER_LOOP; ++i) { if (someCondition) doCondition(i); else bacon(i); } into: bool someCondition = someVeryTimeConsumingTask(/* ... */); if (someCondition) for (int i=0; i<HUGE_INNER_LOOP; ++i) ...
Hi, I have this code: ofstream dest("test.txt",ios::binary); while (true){ size_t retval = recv (sd, buffer, sizeof(buffer), 0); dest.write(buffer,retval); if(retval <= 0) { delete[] buffer; break;} } Now, the recv() function return 4 bytes each loop right? and buffer contain it, this return all data so, pseudo-header and bi...
Suppose you have a function, and you call it a lot of times, every time the function return a big object. I've optimized the problem using a functor that return void, and store the returning value in a public member: #include <vector> const int N = 100; std::vector<double> fun(const std::vector<double> & v, const int n) { std::vect...
Edit: Thank you all very much for your help. Now I feel that I'm really stupid and I am so sorry to waste your time. After implementing James Hopkin' suggestion, I still get the warnings of "invalid name 'null'", which is much better than those weird characters. Then, I went back and read the library document again, and it turns out that...
When I have all my cairo drawing commnds finihed how can I added it to a pixmap so that it will be drawn later. I am using cairomm and gtkmm ...
// MyClass.h namespace MyNamespace { static const double GasConstant = 1.987; Class MyClass { // constructors, methods, etc. }; }; I previously had GasConstant declared within the MyClass declaration (and had a separate definition in the source file since C++ does not support const initialization of non-integral types). ...
I'm porting over some templated code from Windows and I'm hitting some compiler differences on the iPhone 3.2 SDK. Original code inside a class template's member function is: return BinarySearch<uint32, CSimpleKey<T> >(key); where BinarySearch is a method inherited from another template. This produces the following error: csimpleke...
Under WindowsCE, C++ project, I'm trying to work with devices connected via both "real" serial ports and/or serial-to-usb wrappers ("virtual" serial ports); my problem is - when I try to open the port, if something goes wrong, the function never returns and the system goes into some non-responsive state and has to be eventually rebooted....
Hi All, Sorry if the question is very naive. I will have to check the below condition in my code 0 < x < y i.e code similar to if(x > 0 && x < y) The basic problem at system level is - currently, for every call (Telecom domain terminology), my existing code is hit (many times). So performance is very very critical, Now, I ne...
I have a derived class that's a very thin wrapper around a base class. Basically, I have a class that has two ways that it can be compared depending on how you interpret it so I created a new class that derives from the base class and only has new constructors (that just delegate to the base class) and a new operator==. What I'd like t...