ssize_t mphf_chm_imp_rebuild (mphf_t *mphf){ // {{{
ssize_t ret;
uint64_t nelements;
uint64_t capacity_curr;
chm_imp_t *data = (chm_imp_t *)&mphf->data;
// | empty array | existing array
// -----------------+---------------------+--------------------------
// params.nelements | 0 | calculated array size
// params.capacity | 0 | array defined capacity
// -----------------+---------------------+--------------------------
capacity_curr = data->params.capacity;
if(
safe_div(&capacity_curr, capacity_curr, 100) < 0 ||
safe_mul(&capacity_curr, capacity_curr, REBUILD_CONST) < 0
)
capacity_curr = data->params.capacity;
nelements = data->params.nelements;
if(nelements >= capacity_curr){
// expand array
nelements = MAX(MAX(data->params.capacity, data->nelements_min), nelements);
nelements += data->nelements_step;
nelements *= data->nelements_mul;
#ifdef MPHF_DEBUG
printf("mphf expand rebuild on %x (%d) elements\n", (int)nelements, (int)nelements);
#endif
}else{
// ordinary rebuild
nelements = data->params.capacity;
#ifdef MPHF_DEBUG
printf("mphf normal rebuild on %x (%d) elements\n", (int)nelements, (int)nelements);
#endif
}
// set .params
data->params.hash1 = random();
data->params.hash2 = random();
data->params.nelements = 0;
if( (ret = chm_imp_configure_r(mphf, nelements)) < 0)
return ret;
// reinit files
if( (ret = chm_imp_file_init(mphf)) < 0)
return ret;
// save new .params
if( (ret = chm_imp_param_write(mphf)) < 0)
return ret;
return 0;
} // }}}
static ssize_t chm_imp_unload (mphf_t *mphf){ // {{{
chm_imp_t *data = (chm_imp_t *)&mphf->data;
// save .params
chm_imp_param_write(mphf);
fastcall_free r_free = { { 2, ACTION_FREE } };
data_query(&data->be_g, &r_free);
data_query(&data->be_e, &r_free);
data_query(&data->be_v, &r_free);
return 0;
} // }}}
static ssize_t chm_imp_unload (mphf_t *mphf){ // {{{
chm_imp_t *data = (chm_imp_t *)&mphf->data;
// save .params
chm_imp_param_write(mphf);
if(data->be_g)
backend_destroy(data->be_g);
if( (data->status & WRITEABLE) ){
backend_destroy(data->be_e);
backend_destroy(data->be_v);
}
return 0;
} // }}}
