93bb43c5e7
uthash's hashtable implementation will be used by libGLX for storing various mappings needed for correct dispatching.
43 lines
1,003 B
C
43 lines
1,003 B
C
#include "uthash.h"
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#include <stdlib.h> /* malloc */
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#include <stdio.h> /* printf */
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typedef struct example_user_t {
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int id;
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int cookie;
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UT_hash_handle hh;
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} example_user_t;
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int main(int argc,char *argv[]) {
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int i;
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example_user_t *user, *tmp, *users=NULL;
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/* create elements */
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for(i=0;i<10;i++) {
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if ( (user = (example_user_t*)malloc(sizeof(example_user_t))) == NULL) exit(-1);
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user->id = i;
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user->cookie = i*i;
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HASH_ADD_INT(users,id,user);
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}
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/* delete each even ID */
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for(i=0;i<10;i+=2) {
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HASH_FIND_INT(users,&i,tmp);
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if (tmp) {
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HASH_DEL(users,tmp);
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free(tmp);
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} else printf("user id %d not found\n", i);
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}
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i=9;
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HASH_FIND_INT(users,&i,tmp);
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if (tmp) {
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while(tmp) {
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printf("id %d, following prev...\n", tmp->id);
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tmp = (example_user_t*)tmp->hh.prev;
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}
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} else printf("user id %d not found\n", i);
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return 0;
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}
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