I am using an example of Intel TBB code I found on SO:
#include "tbb/blocked_range.h"
#include "tbb/parallel_for.h"
#include "tbb/task_scheduler_init.h"
#include <iostream>
#include <vector>
struct mytask {
mytask(size_t n)
:_n(n)
{}
void operator()() {
for (int i=0;i<1000000;++i) {} // Deliberately run slow
std::cerr << "[" << _n << "]";
}
size_t _n;
};
struct executor
{
executor(std::vector<mytask>& t) :_tasks(t)
{}
executor(executor& e,tbb::split) :_tasks(e._tasks)
{}
void operator()(const tbb::blocked_range<size_t>& r) const {
for (size_t i=r.begin();i!=r.end();++i)
_tasks[i]();
}
std::vector<mytask>& _tasks;
};
int main(int,char**) {
tbb::task_scheduler_init init; // Automatic number of threads
// tbb::task_scheduler_init init(2); // Explicit number of threads
std::vector<mytask> tasks;
for (int i=0;i<1000;++i){
tasks.push_back(mytask(i));
}
executor exec(tasks);
tbb::parallel_for(tbb::blocked_range<size_t>(0,tasks.size()),exec);
std::cerr << std::endl;
return 0;
}
The code builds fine, but when I go to run I get the error:
The program can't start because tbb_debug.dll is missing from your
computer. Try reinstalling the program to fix this problem.
I think this is probably the path I need to set somewhere within VS2012:
C:\Program Files (x86)\Intel\Composer XE 2013 SP1\redist\ia32\tbb\vc11
because it contains tbb_debug.dll.
Where does this path need to be set?
EDIT: I tried setting in the "Executable directories" path section but that didnt work.
In solution explorer, right click the project and open "Properties"
Open "Configuration Properties" -> "Debugging".
In the "Environment" line, add "PATH=C:\Program Files (x86)\Intel\Composer XE 2013"
Make sure "Merge Environment" is set to "Yes".
Related
I want to install all I need to use libp11 and use libp11.
What is my environment and needs:
I work on Windows 10, 64 bits.
I add package with pacman linux command on my mingw32 terminal (msys64 version of 2022/09/04).
I work on a Qt Creator editor and I have a .pro file to configure my Qt project.
I want to develop a C++ module for my application which use libp11 to get the Yubikey bin number and decrypt file.
Why I use a mingw32 terminal and not the mingw64, because, for the moment, the project is always in develop in QT 4.8.
What I do:
I read the README file and follow the installation step of the INSTALL file (first I follow the MinGW / MSYS chapter, then I follow the MSYS2 chapter.)
I do much more, but I don't remember every thing and I go in many wrong ways.
My problems and questions
I try to follow the examples find in GitHub.
I help me with the site cpp.hotexemples.com to find the second parameter for the PKCS11_CTX_load function. I find the st_engine_ctx structure on this project.
The project file:
TEMPLATE = app
CONFIG += console c++17
CONFIG -= app_bundle
CONFIG += qt
LIBS += \
-lp11 \
-lssl \
-lcrypto
SOURCES += \
TestYubikey.cpp \
main.cpp
HEADERS += \
TestYubikey.h
The header file:
#ifndef TESTYUBIKEY_H
#define TESTYUBIKEY_H
#include <libp11.h>
#include <cstdio>
#include <cstring>
#include <openssl/err.h>
#include <openssl/crypto.h>
#include <openssl/objects.h>
#include <openssl/engine.h>
#include <openssl/ui.h>
/* Engine configuration */
/* The PIN used for login. Cache for the ctx_get_pin function.
* The memory for this PIN is always owned internally,
* and may be freed as necessary. Before freeing, the PIN
* must be whitened, to prevent security holes.
*/
struct st_engine_ctx
{
char *pin = nullptr;
size_t pin_length = 0;
int verbose = 0;
char *module = nullptr;
char *init_args = nullptr;
UI_METHOD *ui_method = nullptr;
void *callback_data = nullptr;
int force_login = 0;
/* Engine initialization mutex */
#if OPENSSL_VERSION_NUMBER >= 0x10100004L && !defined(LIBRESSL_VERSION_NUMBER)
CRYPTO_RWLOCK *rwlock = nullptr;
#else
int rwlock;
#endif
/* Current operations */
PKCS11_CTX *pkcs11_ctx = nullptr;
PKCS11_SLOT *slot_list = nullptr;
unsigned int slot_count = 0;
};
class TestYubikey
{
public:
TestYubikey();
};
#endif // TESTYUBIKEY_H
The source file:
//libp11 is a wrapper library for PKCS#11 modules with OpenSSL interface
#include "TestYubikey.h"
#include <iostream>
TestYubikey::TestYubikey()
{
// Create a new libp11 context
PKCS11_CTX *ctx = PKCS11_CTX_new();
std::cout << "ctx = " << ctx << std::endl;
/* load pkcs #11 module */
int rc = PKCS11_CTX_load(ctx, "C:\\msys64\\mingw32\\lib\\engines-1_1\\pkcs11.dll"); //I test with "libpkcs11.dll" and "pkcs11.dll" too.
std::cout << "rc = " << rc << std::endl;
if (rc == -1)
{
std::cout << "Loading pkcs11 engine failed";
unsigned long error_code = ERR_get_error();
const char* error_detail = ERR_reason_error_string(error_code);
std::cout << " (" << error_code << ") : " << std::string(error_detail) << std::endl;
}
else
{
std::cout << "Loading pkcs11 engine worked !" << std::endl;
}
}
My output console show:
11:59:27: Starting C:/Users/jgomez/Documents/build-SandBox-Desktop_Qt_4_8_7_MinGW_32_bit-Release/release/SandBox.exe...
ctx = 0x2ca8f50
rc = -1
Loading pkcs11 engine failed (0) : terminate called after throwing an instance of 'std::logic_error'
what(): basic_string: construction from null is not valid
11:59:29: C:/Users/jgomez/Documents/build-SandBox-Desktop_Qt_4_8_7_MinGW_32_bit-Release/release/SandBox.exe exited with code 3
My problem:
rc = -1
Solution :
use the Dll called opensc-pkcs11.dll provided with OpenSC project and it should work.
( https://github.com/OpenSC/OpenSC , after installing , it should be found here by default C:\Program Files (x86)\OpenSC Project\OpenSC\pkcs11)
Explantation :
I have encountered the same problem, and after messing around with the files I figured out that this error due the PKCS11_CTX_Load function.
PKCS11_CTX_Load , tries to load the pkcs11.dll , and then tries getting the address of "c_get_function_list" from this dll, which fails since it doesn't have that function.
#include "main.h"
#include <iostream>
#include <string>
#include <filesystem>
using namespace std;
namespace fs = filesystem;
void testCopy(fs::path from, fs::path to)
{
try
{
fs::copy(from, to,
fs::copy_options::recursive | fs::copy_options::overwrite_existing);
}
catch(const std::exception& e)
{
wcout << e.what() << endl;
}
}
int main(int argc, char *args[])
{
auto path_drive_d_from = fs::path("D:\\directory have some files");
auto path_drive_d_to = fs::path("D:\\another empty directory");
auto path_drive_e_from = fs::path("E:\\dircetory have somem files");
auto path_drive_e_to = fs::path("E:\\another empty directory");
testCopy(path_drive_d_from, path_drive_d_to);
// testCopy(path_drive_d_from, path_drive_e_to);
// testCopy(path_drive_e_from, path_drive_e_from);
// testCopy(path_drive_e_from, path_drive_d_to);
return 0;
}
I have tested 4 cases and got errors only when copy dir to dir in same drive.
followings are the error message I got.
filesystem error: cannot copy: File exists [D:\MyProjects\myProject] [D:\MyProjects\test\unzip]
and
filesystem error: cannot copy: File exists [E:\test] [E:\test2]
Copying dir to dir in other drive was successful. I think this is very weird and can not understand.
I am using c++17 of gcc 11.2.0 of MSYS2.
Please let me know how could I copy a dir to a dir properly. Thank you.
um, each copying test was tried independently, from a dir have files to empty existed dir.
I followed this link to extract a Boost property tree value.
Extracting STL Map from Boost Property Tree
I don't have library fmt installed so just modified the output function from the original code. The code works fine in g++. But when testing in VS2019, the error "identifier "" is undefined" kept popping.
#include <boost/property_tree/ptree.hpp>
#include <map>
#include <iostream>
using boost::property_tree::ptree;
int main() {
ptree pt;
pt.put("keyA", "valueA-1");
pt.put("keyB", "valueB");
pt.put("keyC", "valueC");
pt.add("keyA", "valueA-2"); // not replacing same key
std::map<std::string, ptree> m(pt.begin(), pt.end());
std::multimap<std::string, ptree> mm(pt.begin(), pt.end());
std::map<std::string, std::string> dict;
for (auto& [k,v]: pt) { // THIS LINE HAS ERROR!
dict.emplace(k, v.get_value<std::string>());
}
for (auto elem : dict) {
std::cout << elem.first << " " << elem.second << std::endl;
}
return 0;
}
I don't see anything wrong with this specified line so I must have missed some switches or config in VS2019?
I found the answer myself after realizing VS2019 uses C++14 by default. The specified line: "auto& [k, v] : pt" needs some C++17 feature. So go to Project Setting --> Configuration Properties --> General --> C++ Language Standard --> Change to ISO C++17 Standard (/std:c++17).
Then the code works fine
I'm trying to retrieve the complete list of the user's preferred languages from a C++/Qt application, as configured in the "Region & language" page in the user's preferences:
For that, I am trying with the WinAPI function GetUserPreferredUILanguages(), on an up-to-date Windows 10 Pro system.
However, the function always only returns the first entry (the main Windows display language), and "en-US". If English is configured as the main language, then only "en-US" is returned. E.g., if I have (German, French, English) configured, ["de-de", "en-US"] is returned, French is omitted. If I add more languages to the list, they are omitted as well.
I also looked at User Interface Language Management, but to no avail. GetSystemPreferredUILanguages() for example only returns "en-US". GetUILanguageFallbackList() returns ["de-de", "de", "en-US", "en"].
The code I use:
// calling GetUserPreferredUILanguages() twice, once to get number of
// languages and required buffer size, then to get the actual data
ULONG numberOfLanguages = 0;
DWORD bufferLength = 0;
const auto result1 = GetUserPreferredUILanguages(MUI_LANGUAGE_NAME,
&numberOfLanguages,
nullptr,
&bufferLength);
// result1 is true, numberOfLanguages=2
QVector<wchar_t> languagesBuffer(static_cast<int>(bufferLength));
const auto result2 = GetUserPreferredUILanguages(MUI_LANGUAGE_NAME,
&numberOfLanguages,
languagesBuffer.data(),
&bufferLength);
// result2 is true, languageBuffer contains "de-de", "en-US"
Is this not the right function to use, or am I misunderstanding something about the language configuration in Windows 10? How can I get the complete list of preferred languages? I see UWP API that might do the job, but if possible, I'd like to use C API, as it integrated more easily with the C++ codebase at hand. (unmanaged C++, that is)
GlobalizationPreferences.Languages is usable from unmanaged C++ because GlobalizationPreferences has DualApiPartitionAttribute.
Here is a C++/WinRT example of using GlobalizationPreferences.Languages:
#pragma once
#include <winrt/Windows.Foundation.Collections.h>
#include <winrt/Windows.System.UserProfile.h>
#include <iostream>
#pragma comment(lib, "windowsapp")
using namespace winrt;
using namespace Windows::Foundation;
using namespace Windows::System::UserProfile;
int main()
{
winrt::init_apartment();
for (const auto& lang : GlobalizationPreferences::Languages()) {
std::wcout << lang.c_str() << std::endl;
}
}
And a WRL example for those who cannot migrate to C++ 17:
#include <roapi.h>
#include <wrl.h>
#include <Windows.System.UserProfile.h>
#include <iostream>
#include <stdint.h>
#pragma comment(lib, "runtimeobject.lib")
using namespace Microsoft::WRL;
using namespace Microsoft::WRL::Wrappers;
using namespace ABI::Windows::Foundation::Collections;
using namespace ABI::Windows::System::UserProfile;
int main()
{
RoInitializeWrapper initialize(RO_INIT_MULTITHREADED);
if (FAILED(initialize)) {
std::cerr << "RoInitialize failed" << std::endl;
return 1;
}
ComPtr<IGlobalizationPreferencesStatics> gps;
HRESULT hr = RoGetActivationFactory(
HStringReference(
RuntimeClass_Windows_System_UserProfile_GlobalizationPreferences)
.Get(),
IID_PPV_ARGS(&gps));
if (FAILED(hr)) {
std::cerr << "RoGetActivationFactory failed" << std::endl;
return 1;
}
ComPtr<IVectorView<HSTRING>> langs;
hr = gps->get_Languages(&langs);
if (FAILED(hr)) {
std::cerr << "Could not get Languages" << std::endl;
return 1;
}
uint32_t size;
hr = langs->get_Size(&size);
if (FAILED(hr)) {
std::cerr << "Could not get Size" << std::endl;
return 1;
}
for (uint32_t i = 0; i < size; ++i) {
HString lang;
hr = langs->GetAt(i, lang.GetAddressOf());
if (FAILED(hr)) {
std::cerr << "Could not get Languages[" << i << "]" << std::endl;
continue;
}
std::wcout << lang.GetRawBuffer(nullptr) << std::endl;
}
}
I found out that language list returned by GetUserPreferredUILanguages() matters with your "Windows UI language" setting, and nothing to do with "Input method list order".
For example, in following screenshot from Win10.21H2,
I can see GetUserPreferredUILanguages() return a list of three langtags:
fr-CA\0fr-FR\0en-US\0\0
In summary, for GetUserPreferredUILanguages() and GetUILanguageFallbackList() their returned langtag list is determined solely by current user's "Windows display language" selection. It is a user-wide single-selection setting. And, for a specific display-language selection, the list-items within and the order of the list-items are hard-coded by Windows itself. Yes, it is even unrelated to what "input methods(IME)" you have added to the control panel -- for example, you add "fr-CA" but not "fr-FR", and the fallback list will still be fr-CA\0fr-FR\0en-US\0\0.
The difference of the two APIs, according to my experiment, is that GetUILanguageFallbackList() returns neutral langtags("fr", "en" etc) as well, so it produces a superset of GetUserPreferredUILanguages().
Background
I am trying to build a sample REST api app for Rasbian running on Raspberry 3. I used cpprestsdk.
Sample contains the following header file:
#include <condition_variable>
#include <mutex>
#include <iostream>
static std::condition_variable _condition;
static std::mutex _mutex;
namespace cfx {
class InterruptHandler {
public:
static void hookSIGINT() {
signal(SIGINT, handleUserInterrupt);
}
static void handleUserInterrupt(int signal){
if (signal == SIGINT) {
std::cout << "SIGINT trapped ..." << '\n';
_condition.notify_one();
}
}
static void waitForUserInterrupt() {
std::unique_lock<std::mutex> lock { _mutex };
_condition.wait(lock);
std::cout << "user has signaled to interrup program..." << '\n';
lock.unlock();
}
};
}
Issue
When compiling on MacOS, no problem occurs.
When compiling in rasbian however, I get error: 'SIGINT' was not declared in this scope error.
It is clear that SIGINT definition - #define SIGINT 2 or similar - is not reachable when compiling on rasbian.
Question
Why I am getting this error on rasbian but not on macOS? Is it because compiler cannot locate signal.h?
I made sure that include_directories in CMakeLists.txt contains required include paths.
UPDATE
Error resolved when I manually added #include <csignal>.
You haven't included signal.h.
You're including some C++ standard library headers, and as a side effect on MacOS, these happen to include signal.h. However, that isn't specified to happen so you can't rely on it working in different implementations of those headers.
Try adding:
#include <signal.h>
at the top.
On Linux the header file to include is
#include <signal.h>
On MacOS the equivalent header file to include is
#include <csignal.h>
Depending on your OS, header files always change. They should both do the same thing though