67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-3.0-or-later
|
|
|
|
#include "incremental_sum.h"
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// incremental sum
|
|
|
|
struct grouping_incremental_sum {
|
|
NETDATA_DOUBLE first;
|
|
NETDATA_DOUBLE last;
|
|
size_t count;
|
|
};
|
|
|
|
void grouping_create_incremental_sum(RRDR *r, const char *options __maybe_unused) {
|
|
r->internal.grouping_data = callocz(1, sizeof(struct grouping_incremental_sum));
|
|
}
|
|
|
|
// resets when switches dimensions
|
|
// so, clear everything to restart
|
|
void grouping_reset_incremental_sum(RRDR *r) {
|
|
struct grouping_incremental_sum *g = (struct grouping_incremental_sum *)r->internal.grouping_data;
|
|
g->first = 0;
|
|
g->last = 0;
|
|
g->count = 0;
|
|
}
|
|
|
|
void grouping_free_incremental_sum(RRDR *r) {
|
|
freez(r->internal.grouping_data);
|
|
r->internal.grouping_data = NULL;
|
|
}
|
|
|
|
void grouping_add_incremental_sum(RRDR *r, NETDATA_DOUBLE value) {
|
|
struct grouping_incremental_sum *g = (struct grouping_incremental_sum *)r->internal.grouping_data;
|
|
|
|
if(unlikely(!g->count)) {
|
|
g->first = value;
|
|
g->count++;
|
|
}
|
|
else {
|
|
g->last = value;
|
|
g->count++;
|
|
}
|
|
}
|
|
|
|
NETDATA_DOUBLE grouping_flush_incremental_sum(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
|
|
struct grouping_incremental_sum *g = (struct grouping_incremental_sum *)r->internal.grouping_data;
|
|
|
|
NETDATA_DOUBLE value;
|
|
|
|
if(unlikely(!g->count)) {
|
|
value = 0.0;
|
|
*rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
|
|
}
|
|
else if(unlikely(g->count == 1)) {
|
|
value = 0.0;
|
|
}
|
|
else {
|
|
value = g->last - g->first;
|
|
}
|
|
|
|
g->first = 0.0;
|
|
g->last = 0.0;
|
|
g->count = 0;
|
|
|
|
return value;
|
|
}
|