[ Foro de C ]

Me falta una libreria para este código en C, de threads

Falta libreria, entiendo un poco lo que dice el listado de threads


Ahí va.


noentras2@debian:~$ cd humillacion7
bash: cd: humillacion7: No existe el fichero o el directorio
noentras2@debian:~$ cd humillacion6
noentras2@debian:~/humillacion6$ gcc thread7.c -o thread7 -lpthread
thread7.c:21:10: fatal error: event.h: No existe el fichero o el directorio
#include <event.h>
         ^~~~~~~~~
compilation terminated.
noentras2@debian:~/humillacion6$ ls t*.c
the1.c  thread7.c
noentras2@debian:~/humillacion6$ g++ thread7.c -o thread7 -lpthread
thread7.c:21:10: fatal error: event.h: No existe el fichero o el directorio
#include <event.h>
         ^~~~~~~~~
compilation terminated.
noentras2@debian:~/humillacion6$ cat thread7.c
/**
*
* Title: ex1_pthreads/main.c, Pthreads Example
*
* Description: This example shows how pthreads are created and used.
* Two pthreads are created. Each pthread increments a counter.
*
* Reference: https://www.cs.rutgers.edu/~pxk/416/notes/c-tutorials/fork.html
*
* Modified by: MD & VS
*
* Date: 20/7/2016
*/

#include <pthread.h>
#include <stdio.h>
#include <signal.h>
#include <sys/wait.h>
#include <unistd.h>
#include <sys/time.h>
#include <event.h>

int stop = 0;
int stop2 = 0;

void catch(int snum);
void catch2(int snum);

void event_timer_callback(int fd, short event, void *arg) {

 printf("event timer callback called\n");
}

/**
* This function is run by the second thread
*/
void *inc_x(void *x_void_ptr) {

/* increment x to 100 */
int *x_ptr = (int *)x_void_ptr;

while(++(*x_ptr) < 61) {
if((*x_ptr) == 60)
(*x_ptr) = 0;

//printf("x = %d: ", *x_ptr);
sleep(60);}

printf("x increment finished\n");

/* the function must return something - NULL will do */
return NULL;

}

/**
* This function is run by the third thread
*/
void *inc_z(void *z_void_ptr) {

/* increment z to 100 */
int *z_ptr = (int *)z_void_ptr;

while(++(*z_ptr) < 61) {
if((*z_ptr) == 60)
*z_ptr = 0;
//printf("z = %d\n", *z_ptr);
sleep(1);}

printf("z increment finished\n");

/* the function must return something - NULL will do */
return NULL;

}

int main() {

struct event ev;
  struct timeval tv;

  tv.tv_sec = 10; /* Set timeout time to be 3 seconds */
  tv.tv_usec = 0;

int x = -1, y = -1, z = 0;

signal(SIGUSR1, catch);
signal(SIGUSR2, catch);

printf("kill -s USR %d\n", getpid());

pthread_t inc_x_thread; /* this variable is our reference to the second thread */
pthread_t inc_z_thread;

/* show the initial values of x and y */
//printf("x: %d, y: %d, z %d\n", x, y, z);

/* create a second thread which executes inc_x(&x) */
if(pthread_create(&inc_x_thread, NULL, inc_x, &x)) {

fprintf(stderr, "Error creating thread\n");
return 1;
}

/* create a third thread which executes inc_(&x) */
if(pthread_create(&inc_z_thread, NULL, inc_z, &z)) {

fprintf(stderr, "Error creating thread\n");
return 1;
}

/* Initialise event library, set/add timer event */
  event_init();
  evtimer_set(&ev, event_timer_callback, NULL);
  evtimer_add(&ev, &tv);

/* Wait for event to occur */
  event_dispatch();
/* increment y to 100 in the first thread */
while(++y < 101) {
if(y == 100)
y = 0;

printf("%02d: %02d: %02d\r", x, z, y);
fflush(NULL);
usleep(10000);
}


printf("y increment finished\n");

/* wait for the second thread to finish */
if(pthread_join(inc_x_thread, NULL)) {

fprintf(stderr, "Error joining thread\n");
return 2;
}

/* show the results - x is now 100 thanks to the second thread */
printf("x: %d, y: %d, z %d\n", x, y, z);

return 0;

}

/**
* Catch function - executed when signal is caught
*/
void catch(int snum) {

printf("got signal %d\n", snum);
stop = 1;

/* on SunOS systems, we have to  reset the signal catcher */
signal(SIGUSR1, catch); /* don't need this on Linux o (but doesn't hurt) */
}

/**
* Catch function - executed when signal is caught
*/
void catch2(int snum) {

//printf("got signal %d\n", snum);
stop2 = 1;

/* on SunOS systems, we have to  reset the signal catcher */
signal(SIGUSR2, catch); /* don't need this on Linux o (but doesn't hurt) */
}
noentras2@debian:~/humillacion6$