From 81581f9719bc56f01d5aa08952671d65fda9867a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 8 May 2023 18:27:08 +0200 Subject: Merging upstream version 1.39.0. Signed-off-by: Daniel Baumann --- web/api/queries/median/median.h | 146 ++++++++++++++++++++++++++++++++++++---- 1 file changed, 133 insertions(+), 13 deletions(-) (limited to 'web/api/queries/median/median.h') diff --git a/web/api/queries/median/median.h b/web/api/queries/median/median.h index 9fc159db4..3d6d35925 100644 --- a/web/api/queries/median/median.h +++ b/web/api/queries/median/median.h @@ -6,18 +6,138 @@ #include "../query.h" #include "../rrdr.h" -void grouping_create_median(RRDR *r, const char *options); -void grouping_create_trimmed_median1(RRDR *r, const char *options); -void grouping_create_trimmed_median2(RRDR *r, const char *options); -void grouping_create_trimmed_median3(RRDR *r, const char *options); -void grouping_create_trimmed_median5(RRDR *r, const char *options); -void grouping_create_trimmed_median10(RRDR *r, const char *options); -void grouping_create_trimmed_median15(RRDR *r, const char *options); -void grouping_create_trimmed_median20(RRDR *r, const char *options); -void grouping_create_trimmed_median25(RRDR *r, const char *options); -void grouping_reset_median(RRDR *r); -void grouping_free_median(RRDR *r); -void grouping_add_median(RRDR *r, NETDATA_DOUBLE value); -NETDATA_DOUBLE grouping_flush_median(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr); +struct tg_median { + size_t series_size; + size_t next_pos; + NETDATA_DOUBLE percent; + + NETDATA_DOUBLE *series; +}; + +static inline void tg_median_create_internal(RRDR *r, const char *options, NETDATA_DOUBLE def) { + long entries = r->view.group; + if(entries < 10) entries = 10; + + struct tg_median *g = (struct tg_median *)onewayalloc_callocz(r->internal.owa, 1, sizeof(struct tg_median)); + g->series = onewayalloc_mallocz(r->internal.owa, entries * sizeof(NETDATA_DOUBLE)); + g->series_size = (size_t)entries; + + g->percent = def; + if(options && *options) { + g->percent = str2ndd(options, NULL); + if(!netdata_double_isnumber(g->percent)) g->percent = 0.0; + if(g->percent < 0.0) g->percent = 0.0; + if(g->percent > 50.0) g->percent = 50.0; + } + + g->percent = g->percent / 100.0; + r->time_grouping.data = g; +} + +static inline void tg_median_create(RRDR *r, const char *options) { + tg_median_create_internal(r, options, 0.0); +} +static inline void tg_median_create_trimmed_1(RRDR *r, const char *options) { + tg_median_create_internal(r, options, 1.0); +} +static inline void tg_median_create_trimmed_2(RRDR *r, const char *options) { + tg_median_create_internal(r, options, 2.0); +} +static inline void tg_median_create_trimmed_3(RRDR *r, const char *options) { + tg_median_create_internal(r, options, 3.0); +} +static inline void tg_median_create_trimmed_5(RRDR *r, const char *options) { + tg_median_create_internal(r, options, 5.0); +} +static inline void tg_median_create_trimmed_10(RRDR *r, const char *options) { + tg_median_create_internal(r, options, 10.0); +} +static inline void tg_median_create_trimmed_15(RRDR *r, const char *options) { + tg_median_create_internal(r, options, 15.0); +} +static inline void tg_median_create_trimmed_20(RRDR *r, const char *options) { + tg_median_create_internal(r, options, 20.0); +} +static inline void tg_median_create_trimmed_25(RRDR *r, const char *options) { + tg_median_create_internal(r, options, 25.0); +} + +// resets when switches dimensions +// so, clear everything to restart +static inline void tg_median_reset(RRDR *r) { + struct tg_median *g = (struct tg_median *)r->time_grouping.data; + g->next_pos = 0; +} + +static inline void tg_median_free(RRDR *r) { + struct tg_median *g = (struct tg_median *)r->time_grouping.data; + if(g) onewayalloc_freez(r->internal.owa, g->series); + + onewayalloc_freez(r->internal.owa, r->time_grouping.data); + r->time_grouping.data = NULL; +} + +static inline void tg_median_add(RRDR *r, NETDATA_DOUBLE value) { + struct tg_median *g = (struct tg_median *)r->time_grouping.data; + + if(unlikely(g->next_pos >= g->series_size)) { + g->series = onewayalloc_doublesize( r->internal.owa, g->series, g->series_size * sizeof(NETDATA_DOUBLE)); + g->series_size *= 2; + } + + g->series[g->next_pos++] = value; +} + +static inline NETDATA_DOUBLE tg_median_flush(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) { + struct tg_median *g = (struct tg_median *)r->time_grouping.data; + + size_t available_slots = g->next_pos; + NETDATA_DOUBLE value; + + if(unlikely(!available_slots)) { + value = 0.0; + *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY; + } + else if(available_slots == 1) { + value = g->series[0]; + } + else { + sort_series(g->series, available_slots); + + size_t start_slot = 0; + size_t end_slot = available_slots - 1; + + if(g->percent > 0.0) { + NETDATA_DOUBLE min = g->series[0]; + NETDATA_DOUBLE max = g->series[available_slots - 1]; + NETDATA_DOUBLE delta = (max - min) * g->percent; + + NETDATA_DOUBLE wanted_min = min + delta; + NETDATA_DOUBLE wanted_max = max - delta; + + for (start_slot = 0; start_slot < available_slots; start_slot++) + if (g->series[start_slot] >= wanted_min) break; + + for (end_slot = available_slots - 1; end_slot > start_slot; end_slot--) + if (g->series[end_slot] <= wanted_max) break; + } + + if(start_slot == end_slot) + value = g->series[start_slot]; + else + value = median_on_sorted_series(&g->series[start_slot], end_slot - start_slot + 1); + } + + if(unlikely(!netdata_double_isnumber(value))) { + value = 0.0; + *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY; + } + + //log_series_to_stderr(g->series, g->next_pos, value, "median"); + + g->next_pos = 0; + + return value; +} #endif //NETDATA_API_QUERIES_MEDIAN_H -- cgit v1.2.3