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Old 05-21-2010, 06:48 AM   #1
LQ Newbie
Registered: Apr 2010
Posts: 12

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Pthreads problem

I am playing around with pthreads. This program how ever blows up.

#include <iostream>
#include <pthread.h>

using namespace std;

struct myStruct
int a;
string msg;

void * myProc(void *arg)
struct myStruct* str = new struct myStruct();
str->a = 10;
str->msg ="hi";
return (void*)str;

int main(int argc, char **argv)

pthread_t mythr;
int status ;
void *retVal;
struct myStruct* m_str;
status = pthread_create(&mythr,NULL,myProc,NULL);
status = pthread_join(mythr,&retVal);
cout<<"Status is"<<status<<endl;
m_str = (struct myStruct*)m_str;
cout<<"retval is "<<m_str->a<<" "<<endl;
return 0;

Can a structure be returned by a thread as its return value ?
Old 05-21-2010, 06:55 AM   #2
LQ Newbie
Registered: Apr 2010
Posts: 12

Original Poster
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Sorry i guess i jumped the gun...

m_str = (struct myStruct*)m_str;

m_str = (struct myStruct*)retVal;



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