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#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
struct list {
int i;
struct list *next;
};
struct list *init(void) {
struct list *p = malloc(sizeof(struct list));
p->i = 0;
p->next = NULL;
return p;
}
static struct list *stack = NULL;
pthread_mutex_t zone = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t condition = PTHREAD_COND_INITIALIZER;
static void print(struct list *p) {
printf("%d %p\n", p->i, p->next);
}
void *push(struct list *p) {
int i = 0;
pthread_mutex_init(&zone, NULL);
pthread_mutex_lock(&zone);
pthread_cond_init(&condition, NULL);
while(i++ < 1000000) {
stack = p;
stack->i += 1;
stack->next = init();
print(stack);
/* pthread_cond_signal(&condition); */
/* pthread_cond_wait(&condition, &zone); */
}
pthread_mutex_unlock(&zone);
}
int main(void) {
struct list *p = init();
pthread_t td;
pthread_create(&td, NULL, (void *) push, (void *) p);
pthread_join(td, NULL);
return 0;
} |
