#include "uthash.h"
#include <stdlib.h> /* malloc */
#include <stdio.h> /* printf */
typedef struct example_user_t {
int id;
int cookie;
UT_hash_handle hh;
} example_user_t;
int rev(void *_a, void *_b) {
example_user_t *a = (example_user_t*)_a;
example_user_t *b = (example_user_t*)_b;
printf("called for a:%d, b:%d\n",a->id, b->id);
return (a->id - b->id);
}
int main(int argc,char *argv[]) {
int i;
example_user_t *user, *users=NULL;
/* create elements */
for(i=9;i>=0;i--) {
if ( (user = (example_user_t*)malloc(sizeof(example_user_t))) == NULL) exit(-1);
user->id = i;
user->cookie = i*i;
HASH_ADD_INT(users,id,user);
}
for(user=users; user != NULL; user=(example_user_t*)user->hh.next) {
printf("user %d, cookie %d\n", user->id, user->cookie);
}
printf("sorting\n");
HASH_SORT(users,rev);
for(user=users; user != NULL; user=(example_user_t*)user->hh.next) {
printf("user %d, cookie %d\n", user->id, user->cookie);
}
printf("adding 10-20\n");
for(i=20;i>=10;i--) {
if ( (user = (example_user_t*)malloc(sizeof(example_user_t))) == NULL) exit(-1);
user->id = i;
user->cookie = i*i;
HASH_ADD_INT(users,id,user);
}
for(user=users; user != NULL; user=(example_user_t*)user->hh.next) {
printf("user %d, cookie %d\n", user->id, user->cookie);
}
printf("sorting\n");
HASH_SORT(users,rev);
for(user=users; user != NULL; user=(example_user_t*)user->hh.next) {
printf("user %d, cookie %d\n", user->id, user->cookie);
}
return 0;
}