#pthread

model_pthread.c

#include <pthread.h>
#include <stdio.h>

#define NUM_ARGS 2

typedef struct{
	int id;
}Data;

void printData(Data *d){
	printf("id: %d\n", d->id);
}

void createData(Data *d, int id){
	d->id = id;
}

void* thread_process(void* dt){
	Data* data = (Data*) dt;
	printData(data);
	pthread_exit(NULL);
}

int main(int argc, char* argv[]){
	int i;
	int numero_threads = 0;
	
	if(argc != NUM_ARGS){
		fprintf(stderr, "[Erro] O número de argumentos deve ser igual a 2\n");
		return 0;
	}
	else{
		numero_threads = atoi(argv[1]);
		start_threads(numero_threads);
	}
	return 1;
}

int start_threads(int num_threads){
	
	pthread_t threads[num_threads];
	Data datas[num_threads];
	
	int i;
	for(i = 0; i < num_threads; i++){
		createData(&datas[i], i);
		pthread_create(&threads[i], NULL, &thread_process,  (void *) &datas[i]);
	}
	
	for(i = 0; i < num_threads; i++){
		pthread_join(threads[i], NULL);
	}
	
	pthread_exit(NULL);
}