posix thread help

[bomberto]

I am working on a producer/consumer problem and need a little help on calling my functions in a posix thread. What would be the correct syntax for calling producer?

Nothing seems to be working for me today. I have had to delete all my curly braces from from my code in order for it to let me post. When I left them in it kept telling me to use code tags, which I was already using.

#include <iostream>
#include <fstream>
#include <cstdlib>
#include <cctype>
#include <string>
#include <pthread.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>

using namespace std;

#define N 100
typedef int semaphore;
semaphore mutex =1;
semaphore empty = N;
semaphore full = 0;
bool TRUE = TRUE;
pthread_t thread1, thread2, thread3, thread4;
int err1, err2, err3, err4;
	
void producer();
int remove_item();
void consumer();
int produce_item();
void insert_item (int item);
semaphore down (semaphore value);
int up (int &value);
void consume_item(int item);


int main(int argc, char* argv)
// 
err1 = pthread_create(&thread1, NULL, producer() (void*));//trying to call producer here
//	

void producer()
//
	cout<<("producer stuff")<<endl;
	int item;
	
	while (TRUE)
	//
		item = produce_item();
		down(empty);
		down(mutex);
		insert_item(item);
		up(mutex);
		up(full);
	//

//

An explanation of parts of the thread call might help
I.E
pthread_create(&thread1, NULL, producer() (void*));
1st slot:
&thread = the pthread you want to use?
2nd slot:
NULL= something?
3rd slot:
Produce() = the fuction i am trying to call?
4th slot:
(void*) = some crazy C thing?

[Salem]

> I have had to delete all my curly braces from from my code in order for it to let me post.
NO!
That's to encourage you to use code tags - which you seem to have done.
Curly brackets outside of [code][/code] tags are disallowed.

> void producer();
A thread function should be declared
void *producer( void *);

Then the call to create a thread is
pthread_create(&thread1, NULL, producer, NULL) ;

The 4th parameter to pthread_create() gets passed as the first parameter to producer() when it eventually gets called as a thread. Use this when you have some information you want to pass to your thread.