Question

How to implement posix threads in linux c++.The smme program when saved as ‘.c and run using c compiler is ok. but in c++ it is giving error ..

I think i made mistake when compiling is there any tag to be included like ‘-lpthread’ for c++

Can someone pls send a valid code…?

Actually this is my code

int cooperbussman :: startlistenthread() {         if(pthread_create(&m_thread,0,&packetreadertask,0)<0)         {                 cout<<'Unable to create the thread Startlistenthread\n';                 return -1;         }         return 1; 

and the error i am getting is

 cooperbussman.cpp: In member function âint cooperbussman::startlistenthread()â: cooperbussman.cpp:76: error: invalid conversion from âvoid* (*)()â to âvoid* (*)(void*)â cooperbussman.cpp:76: error:   initializing argument 3 of âint pthread_create(pthread_t*, const pthread_attr_t*, void* (*)(void*), void*)â 

Answer 1

Your packetreadertask function must be a function that takes a single void * as a parameter. This is the important error message:

cooperbussman.cpp:76: error: invalid conversion from âvoid* (*)()â to âvoid* (*)(void*)â 

Your function is declared something like this:

void *packetreadertask(); 

where it must be:

void *packetreadertask(void *);