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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <threads.h>
#include "mdb.h"
static int setkey_helper(void *thr_data);
static int delkey_helper(void *thr_data);
static int *clone(int n);
tablist_t *setkey_copy;
char *setkey_str;
mtx_t setkey_mtx;
int setkeys(tablist_t **list, char *pair)
{
int rc = 0;
setkey_copy = calloc(list[0]->len, sizeof(tablist_t));
memcpy(setkey_copy, *list, list[0]->len * sizeof(tablist_t));
setkey_str = pair;
thrd_t *thrds = calloc(list[0]->len, sizeof(thrd_t));
if (mtx_init(&setkey_mtx, mtx_plain) != thrd_success)
return 1;
for (int i = 0; i < setkey_copy[0].len; ++i)
thrd_create(&thrds[i], setkey_helper, clone(i));
for (int i = 0; i < setkey_copy[0].len; ++i) {
if (rc)
thrd_join(thrds[i], NULL);
else
thrd_join(thrds[i], &rc);
}
if (!rc)
memcpy(*list, setkey_copy, setkey_copy[0].len * sizeof(tablist_t));
free(thrds);
free(setkey_copy);
return rc;
}
tablist_t *delkey_copy;
char *delkey_str;
mtx_t delkey_mtx;
int delkeys(tablist_t *list, char *key)
{
int rc = 0;
delkey_copy = calloc(list[0].len, sizeof(tablist_t));
memcpy(delkey_copy, list, list[0].len * sizeof(tablist_t));
delkey_str = key;
thrd_t *thrds = calloc(list[0].len, sizeof(thrd_t));
if (mtx_init(&delkey_mtx, mtx_plain) != thrd_success)
return 1;
for (int i = 0; i < delkey_copy[0].len; ++i)
thrd_create(&thrds[i], delkey_helper, clone(i));
for (int i = 0; i < delkey_copy[0].len; ++i) {
if (rc)
thrd_join(thrds[i], NULL);
else
thrd_join(thrds[i], &rc);
}
if (!rc)
memcpy(list, delkey_copy, delkey_copy[0].len * sizeof(tablist_t));
free(thrds);
free(delkey_copy);
return rc;
}
static int setkey_helper(void *thr_data)
{
int rc = 0;
mtx_lock(&setkey_mtx);
int *id = (int *) thr_data;
rc = setkey(&setkey_copy, *id, setkey_str);
free(id);
mtx_unlock(&setkey_mtx);
return rc;
}
static int delkey_helper(void *thr_data)
{
int rc;
mtx_lock(&delkey_mtx);
int *id = (int *) thr_data;
rc = delkey(delkey_copy, *id, delkey_str);
free(id);
mtx_unlock(&delkey_mtx);
return rc;
}
static int *clone(int n)
{
int *c = calloc(1, sizeof(int));
*c = n;
return c;
}
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