int init_module(void)
{
cbuffer = create_cbuffer_t(MAX_ITEMS_CBUF);
if (!cbuffer) {
return -ENOMEM;
}
sema_init(&sem_cons, 0);
sema_init(&sem_prod, 0);
sema_init(&mutex, 1);
proc_entry = proc_create_data("fifoproc",0666, NULL, &proc_entry_fops, NULL);
if (proc_entry == NULL) {
destroy_cbuffer_t(cbuffer);
printk(KERN_INFO "Fifoproc: No puedo crear la entrada en proc\n");
return -ENOMEM;
}
printk(KERN_INFO "Fifoproc: Cargado el Modulo.\n");
return 0;
}
int init_module(void)
{
Major = register_chrdev(0, DEVICE_NAME, &fops);
if (Major < 0){
printk(KERN_ALERT "Registering char device failed with %d\n", Major);
return Major;
}
//Inicializamos semaforos de mutex y de colas de espera
sema_init(&mtx,1);
sema_init(&sem_cons,0);
sema_init(&sem_prod,0);
//Inicializamos cbuffer
cbuffer = create_cbuffer_t (MAX_CBUFFER_LEN);
printk(KERN_INFO "I was assigned major number %d. To talk to\n", Major);
printk(KERN_INFO "the driver, create a dev file with\n");
printk(KERN_INFO "'mknod /dev/%s c %d 0'.\n", DEVICE_NAME, Major);
printk(KERN_INFO "Try various minor numbers. Try to cat and echo to\n");
printk(KERN_INFO "the device file.\n");
printk(KERN_INFO "Remove the device file and module when done.\n");
return 0;
}
/* Función init module */
int init_module( void )
{
Major = register_chrdev(0, DEVICE_NAME, &fops);
if (Major < 0) {
printk(KERN_ALERT "Registering char fifo failed with %d\n", Major);
return Major;
}
printk(KERN_ALERT "Registering char fifo succed with %d\n", Major);
/* Inicializaciones */
prodcount = 0;
conscount = 0;
sema_init(&mtx, 1);
sema_init(&sem_cons, 0);
sema_init(&sem_prod, 0);
nr_prod_waiting = 0;
nr_cons_waiting = 0;
cbuffer = create_cbuffer_t(CBUF_SIZE);
return SUCCESS;
}
struct sys_mbox* mbox_new(unsigned int max_size) {
struct sys_mbox *mailbox;
mailbox = (struct sys_mbox *) malloc(sizeof(struct sys_mbox));
if (mailbox == NULL ) {
return NULL ;
}
/* Create the data structure */
if ((mailbox->cbuffer = create_cbuffer_t(max_size)) == NULL ) {
free(mailbox);
return NULL ;
}
mailbox->not_empty = sys_sem_new(0);
mailbox->not_full = sys_sem_new(0);
mailbox->mutex = (pthread_mutex_t *) malloc(sizeof(pthread_mutex_t));
pthread_mutex_init(mailbox->mutex, NULL );
mailbox->wait_send = 0;
return mailbox;
}
