1 // p_s - library routines for pstop.
3 // This file contains the library routines for managing the
4 // events_waits_summary_global_by_event_name table.
5 package events_waits_summary_global_by_event_name
12 "github.com/sjmudd/pstop/lib"
13 "github.com/sjmudd/pstop/p_s"
17 type Table_events_waits_summary_global_by_event_name struct {
21 initial events_waits_summary_global_by_event_name_rows // initial data for relative values
22 current events_waits_summary_global_by_event_name_rows // last loaded values
23 results events_waits_summary_global_by_event_name_rows // results (maybe with subtraction)
24 totals events_waits_summary_global_by_event_name_row // totals of results
27 func (t *Table_events_waits_summary_global_by_event_name) SetWantsLatency(want_latency bool) {
28 t.want_latency = want_latency
31 func (t Table_events_waits_summary_global_by_event_name) WantsLatency() bool {
35 // Collect() collects data from the db, updating initial
36 // values if needed, and then subtracting initial values if we want
37 // relative values, after which it stores totals.
38 func (t *Table_events_waits_summary_global_by_event_name) Collect(dbh *sql.DB) {
40 // lib.Logger.Println("Table_events_waits_summary_global_by_event_name.Collect() BEGIN")
41 t.current = select_tiwsbt_rows(dbh)
42 lib.Logger.Println("t.current collected", len(t.current), "row(s) from SELECT")
44 if len(t.initial) == 0 && len(t.current) > 0 {
45 lib.Logger.Println("t.initial: copying from t.current (initial setup)")
46 t.initial = make(events_waits_summary_global_by_event_name_rows, len(t.current))
47 copy(t.initial, t.current)
50 // check for reload initial characteristics
51 if t.initial.needs_refresh(t.current) {
52 lib.Logger.Println("t.initial: copying from t.current (data needs refreshing)")
53 t.initial = make(events_waits_summary_global_by_event_name_rows, len(t.current))
54 copy(t.initial, t.current)
59 // lib.Logger.Println( "t.initial:", t.initial )
60 // lib.Logger.Println( "t.current:", t.current )
61 lib.Logger.Println("t.initial.totals():", t.initial.totals())
62 lib.Logger.Println("t.current.totals():", t.current.totals())
63 // lib.Logger.Println("t.results:", t.results)
64 // lib.Logger.Println("t.totals:", t.totals)
65 lib.Logger.Println("Table_events_waits_summary_global_by_event_name.Collect() END, took:", time.Duration(time.Since(start)).String())
68 func (t *Table_events_waits_summary_global_by_event_name) make_results() {
69 // lib.Logger.Println( "- t.results set from t.current" )
70 t.results = make(events_waits_summary_global_by_event_name_rows, len(t.current))
71 copy(t.results, t.current)
72 if t.WantRelativeStats() {
73 // lib.Logger.Println( "- subtracting t.initial from t.results as WantRelativeStats()" )
74 t.results.subtract(t.initial)
77 // lib.Logger.Println( "- sorting t.results" )
79 // lib.Logger.Println( "- collecting t.totals from t.results" )
80 t.totals = t.results.totals()
83 // reset the statistics to current values
84 func (t *Table_events_waits_summary_global_by_event_name) SyncReferenceValues() {
85 // lib.Logger.Println( "Table_events_waits_summary_global_by_event_name.SyncReferenceValues() BEGIN" )
88 t.initial = make(events_waits_summary_global_by_event_name_rows, len(t.current))
89 copy(t.initial, t.current)
93 // lib.Logger.Println( "Table_events_waits_summary_global_by_event_name.SyncReferenceValues() END" )
96 func (t Table_events_waits_summary_global_by_event_name) EmptyRowContent() string {
97 return t.emptyRowContent()
100 func (t *Table_events_waits_summary_global_by_event_name) Headings() string {
101 var r events_waits_summary_global_by_event_name_row
106 func (t Table_events_waits_summary_global_by_event_name) RowContent(max_rows int) []string {
107 rows := make([]string, 0, max_rows)
109 for i := range t.results {
111 rows = append(rows, t.results[i].row_content(t.totals))
118 func (t Table_events_waits_summary_global_by_event_name) emptyRowContent() string {
119 var r events_waits_summary_global_by_event_name_row
121 return r.row_content(r)
124 func (t Table_events_waits_summary_global_by_event_name) TotalRowContent() string {
125 return t.totals.row_content(t.totals)
128 func (t Table_events_waits_summary_global_by_event_name) Description() string {
129 count := t.count_rows()
130 return fmt.Sprintf("Mutex Latency (events_waits_summary_global_by_event_name) %d rows", count)
133 func (t Table_events_waits_summary_global_by_event_name) count_rows() int {
135 for row := range t.results {
136 if t.results[row].SUM_TIMER_WAIT > 0 {