[英]Multithreading with boost QT and mingw
I am developping a GUI using C++ (librairie OpenCV) on QT that works fine. 我正在QT上使用C ++(librairie OpenCV)开发GUI,效果很好。 now i am trying to multithread the code using boost my method is : 现在我正在尝试使用boost多线程代码,我的方法是:
//creating thread group
thread_group mythread;
//then creating threads
mythread.create_thread(bind(&MainWindow::setbarvalue,this,0) ) ;
//set max and min of a progressbar to zero to get a floatting progressbar
mythread.create_thread(bind(&AVI2Image::Convert_AVItoImage,&avitoim,Nom,firstframe, lastframe,Nom_save,digitsnumber)) ;
AVI2Image :the class AVI2Image:该类
Convert_AVItoImage: the function Convert_AVItoImage:函数
avitoim: instance of the class avitoim:类的实例
then the attributes 然后是属性
this line work either . 这条线也可以。
the problem begin with this line : 问题开始于这一行:
mythread.create_thread(bind(&Lecture_containerYUV::container_YUV2yuv,&lectcont, Nom,Nom_save, width ,height,Redimonsionne,width_desir,height_desir, filter,inputsampling,
inputbitdepth,nbimages,digitsnumber,ry6,ru6,rv6,gy6,gu6,gv6,by6,bu6,bv6,coeff1,coeff2,coeff3,contrast,gamma,ry7,ru7,rv7,gy7,gu7,gv7,by7,bu7
,bv7,ry2,ru2,rv2,gy2,gu2,gv2,by2,bu2,bv2));
its the same method as above but here I get this error: 其方法与上述相同,但在此出现此错误:
C:\Users\Mido\Documents\Container_ConverterV_2.4\mainwindow.cpp:363: erreur : no matching function for call to 'bind(void (Lecture_containerYUV::*)(std::string, std::string, int, int, bool, int, int, int, int, int, int, int, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, double), Lecture_containerYUV*, std::string&, std::string&, int&, int&, bool&, int&, int&, int&, int&, int&, int&, int&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&, double&)'
and: 和:
lectcont.container_YUV2yuv( Nom,Nom_save, width ,height,Redimonsionne,width_desir,height_desir, filter,inputsampling,
inputbitdepth,nbimages,digitsnumber,ry6,ru6,rv6,gy6,gu6,gv6,by6,bu6,bv6,coeff1,coeff2,coeff3,contrast,gamma,ry7,ru7,rv7,gy7,gu7,gv7,by7,bu7
,bv7,ry2,ru2,rv2,gy2,gu2,gv2,by2,bu2,bv2);
works fine!!! 工作正常!!!
mingw cant find the function i dont understand why ! mingw找不到我不明白为什么的功能!
any help please 任何帮助请
I think issue is that you cant enter so match parameters. 我认为问题是您无法输入匹配参数。 I propose that you use the Multithreading of C++11 我建议您使用C ++ 11的多线程
#ifndef MyTHREAD_HPP
#define MyTHREAD_HPP
#include <thread>
#include <mutex>
class MyThread {
public:
MyThread();
void PrintOutMessage(string msg);
void PrintOut(int i, int j, int k);
void PrintOut(int i, int j);
~MyThread();
};
#endif
#include "MyThread.hpp"
mutex _mu, _mu2;
MyThread::MyThread()
{
}
MyThread::~MyThread()
{
}
void MyThread::PrintOutMessage(string msg)
{
for (int l = 0; l < 10; l++)
{
lock(_mu, _mu2);
lock_guard<mutex>locker(_mu2, adopt_lock);
lock_guard<mutex>locker2(_mu, adopt_lock);
cout<< "message:" << msg << endl;
Sleep(200);
}
}
void MyThread::PrintOut(int i,int j,int k)
{
for (int l = 0; l < 10; l++)
{
lock(_mu, _mu2);
//lock_guard<mutex>locker(_mu2, adopt_lock);
//lock_guard<mutex>locker2(_mu, adopt_lock);
unique_lock<mutex>locker(_mu2, adopt_lock);
unique_lock<mutex>locker2(_mu, adopt_lock);
cout << "message:" << i << ", " << j << ", " << k << endl;
Sleep(200);
}
}
void MyThread::PrintOut(int i, int j)
{
for (int l = 0; l < 10; l++)
{
lock(_mu, _mu2);
lock_guard<mutex>locker(_mu2, adopt_lock);
lock_guard<mutex>locker2(_mu, adopt_lock);
cout << "message:" << i << ", " << j << endl;
Sleep(200);
}
}
#include "MyThread.hpp"
void (MyThread::*memfunc)(int,int) = &MyThread::PrintOut;
void (MyThread::*memfunc2)(int, int,int) = &MyThread::PrintOut;
void PrintOutmainfunc(int i, int j, int k)
{
for (int l = 0; l < 10; l++)
{
cout << "message:" << i << ", " << j << ", " << k << endl;
Sleep(200);
}
}
int main (){
string msg = " hello world";
int i = 10, j = 20, k = 30;
// string str = lexical_cast<string>(i);
//cout << "str: " << str << endl;
MyThread mythread;
thread t1(memfunc, mythread, i, j);
thread t2(memfunc2, mythread, i, j, k);
thread t3(&MyThread::PrintOutMessage, mythread, msg);
//thread t4(PrintOutmainfunc, i, j, k);
//thread t3(bind(&MyThread::PrintOutMessage, mythread, msg));
t1.join();
t2.join();
t3.join();
//t4.join();
system("PAUSE");
return 0;
}
in this example I putted all possible options for Multithreading 在此示例中,我将多线程的所有可能选项
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