1 files changed, 49 insertions, 5 deletions
diff --git a/web/api/queries/max/max.h b/web/api/queries/max/max.h
index e2427d26..c26bb79a 100644
--- a/web/api/queries/max/max.h
+++ b/web/api/queries/max/max.h
@@ -6,10 +6,54 @@
 #include "../query.h"
 #include "../rrdr.h"
 
-void grouping_create_max(RRDR *r, const char *options __maybe_unused);
-void grouping_reset_max(RRDR *r);
-void grouping_free_max(RRDR *r);
-void grouping_add_max(RRDR *r, NETDATA_DOUBLE value);
-NETDATA_DOUBLE grouping_flush_max(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+struct tg_max {
+    NETDATA_DOUBLE max;
+    size_t count;
+};
+
+static inline void tg_max_create(RRDR *r, const char *options __maybe_unused) {
+    r->time_grouping.data = onewayalloc_callocz(r->internal.owa, 1, sizeof(struct tg_max));
+}
+
+// resets when switches dimensions
+// so, clear everything to restart
+static inline void tg_max_reset(RRDR *r) {
+    struct tg_max *g = (struct tg_max *)r->time_grouping.data;
+    g->max = 0;
+    g->count = 0;
+}
+
+static inline void tg_max_free(RRDR *r) {
+    onewayalloc_freez(r->internal.owa, r->time_grouping.data);
+    r->time_grouping.data = NULL;
+}
+
+static inline void tg_max_add(RRDR *r, NETDATA_DOUBLE value) {
+    struct tg_max *g = (struct tg_max *)r->time_grouping.data;
+
+    if(!g->count || fabsndd(value) > fabsndd(g->max)) {
+        g->max = value;
+        g->count++;
+    }
+}
+
+static inline NETDATA_DOUBLE tg_max_flush(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+    struct tg_max *g = (struct tg_max *)r->time_grouping.data;
+
+    NETDATA_DOUBLE value;
+
+    if(unlikely(!g->count)) {
+        value = 0.0;
+        *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+    }
+    else {
+        value = g->max;
+    }
+
+    g->max = 0.0;
+    g->count = 0;
+
+    return value;
+}
 
 #endif //NETDATA_API_QUERY_MAX_H