X-Git-Url: http://git.iain.cx/?a=blobdiff_plain;f=p_s%2Fevents_waits_summary_global_by_event_name%2Fevents_waits_summary_global_by_event_name.go;fp=p_s%2Fevents_waits_summary_global_by_event_name%2Fevents_waits_summary_global_by_event_name.go;h=7560cdb370f0c451217cc140dc21c17c60a157bc;hb=24183433de0c5d606a4fc1d9f90df0608547bf78;hp=0000000000000000000000000000000000000000;hpb=9c17baa1e5fb1582c5bbed49280a9ee672142332;p=pstop.git

diff --git a/p_s/events_waits_summary_global_by_event_name/events_waits_summary_global_by_event_name.go b/p_s/events_waits_summary_global_by_event_name/events_waits_summary_global_by_event_name.go
new file mode 100644
index 0000000..7560cdb
--- /dev/null
+++ b/p_s/events_waits_summary_global_by_event_name/events_waits_summary_global_by_event_name.go
@@ -0,0 +1,141 @@
+// p_s - library routines for pstop.
+//
+// This file contains the library routines for managing the
+// events_waits_summary_global_by_event_name table.
+package events_waits_summary_global_by_event_name
+
+import (
+	"database/sql"
+	"fmt"
+	"time"
+
+	"github.com/sjmudd/pstop/lib"
+	"github.com/sjmudd/pstop/p_s"
+)
+
+// a table of rows
+type Table_events_waits_summary_global_by_event_name struct {
+	p_s.RelativeStats
+	p_s.InitialTime
+	want_latency bool
+	initial      events_waits_summary_global_by_event_name_rows // initial data for relative values
+	current      events_waits_summary_global_by_event_name_rows // last loaded values
+	results      events_waits_summary_global_by_event_name_rows // results (maybe with subtraction)
+	totals       events_waits_summary_global_by_event_name_row  // totals of results
+}
+
+func (t *Table_events_waits_summary_global_by_event_name) SetWantsLatency(want_latency bool) {
+	t.want_latency = want_latency
+}
+
+func (t Table_events_waits_summary_global_by_event_name) WantsLatency() bool {
+	return t.want_latency
+}
+
+// Collect() collects data from the db, updating initial
+// values if needed, and then subtracting initial values if we want
+// relative values, after which it stores totals.
+func (t *Table_events_waits_summary_global_by_event_name) Collect(dbh *sql.DB) {
+	start := time.Now()
+	// lib.Logger.Println("Table_events_waits_summary_global_by_event_name.Collect() BEGIN")
+	t.current = select_tiwsbt_rows(dbh)
+	lib.Logger.Println("t.current collected", len(t.current), "row(s) from SELECT")
+
+	if len(t.initial) == 0 && len(t.current) > 0 {
+		lib.Logger.Println("t.initial: copying from t.current (initial setup)")
+		t.initial = make(events_waits_summary_global_by_event_name_rows, len(t.current))
+		copy(t.initial, t.current)
+	}
+
+	// check for reload initial characteristics
+	if t.initial.needs_refresh(t.current) {
+		lib.Logger.Println("t.initial: copying from t.current (data needs refreshing)")
+		t.initial = make(events_waits_summary_global_by_event_name_rows, len(t.current))
+		copy(t.initial, t.current)
+	}
+
+	t.make_results()
+
+	// lib.Logger.Println( "t.initial:", t.initial )
+	// lib.Logger.Println( "t.current:", t.current )
+	lib.Logger.Println("t.initial.totals():", t.initial.totals())
+	lib.Logger.Println("t.current.totals():", t.current.totals())
+	// lib.Logger.Println("t.results:", t.results)
+	// lib.Logger.Println("t.totals:", t.totals)
+	lib.Logger.Println("Table_events_waits_summary_global_by_event_name.Collect() END, took:", time.Duration(time.Since(start)).String())
+}
+
+func (t *Table_events_waits_summary_global_by_event_name) make_results() {
+	// lib.Logger.Println( "- t.results set from t.current" )
+	t.results = make(events_waits_summary_global_by_event_name_rows, len(t.current))
+	copy(t.results, t.current)
+	if t.WantRelativeStats() {
+		// lib.Logger.Println( "- subtracting t.initial from t.results as WantRelativeStats()" )
+		t.results.subtract(t.initial)
+	}
+
+	// lib.Logger.Println( "- sorting t.results" )
+	t.results.Sort()
+	// lib.Logger.Println( "- collecting t.totals from t.results" )
+	t.totals = t.results.totals()
+}
+
+// reset the statistics to current values
+func (t *Table_events_waits_summary_global_by_event_name) SyncReferenceValues() {
+	// lib.Logger.Println( "Table_events_waits_summary_global_by_event_name.SyncReferenceValues() BEGIN" )
+
+	t.SetNow()
+	t.initial = make(events_waits_summary_global_by_event_name_rows, len(t.current))
+	copy(t.initial, t.current)
+
+	t.make_results()
+
+	// lib.Logger.Println( "Table_events_waits_summary_global_by_event_name.SyncReferenceValues() END" )
+}
+
+func (t Table_events_waits_summary_global_by_event_name) EmptyRowContent() string {
+	return t.emptyRowContent()
+}
+
+func (t *Table_events_waits_summary_global_by_event_name) Headings() string {
+	var r events_waits_summary_global_by_event_name_row
+
+	return r.headings()
+}
+
+func (t Table_events_waits_summary_global_by_event_name) RowContent(max_rows int) []string {
+	rows := make([]string, 0, max_rows)
+
+	for i := range t.results {
+		if i < max_rows {
+			rows = append(rows, t.results[i].row_content(t.totals))
+		}
+	}
+
+	return rows
+}
+
+func (t Table_events_waits_summary_global_by_event_name) emptyRowContent() string {
+	var r events_waits_summary_global_by_event_name_row
+
+	return r.row_content(r)
+}
+
+func (t Table_events_waits_summary_global_by_event_name) TotalRowContent() string {
+	return t.totals.row_content(t.totals)
+}
+
+func (t Table_events_waits_summary_global_by_event_name) Description() string {
+	count := t.count_rows()
+	return fmt.Sprintf("Mutex Latency (events_waits_summary_global_by_event_name) %d rows", count)
+}
+
+func (t Table_events_waits_summary_global_by_event_name) count_rows() int {
+	var count int
+	for row := range t.results {
+		if t.results[row].SUM_TIMER_WAIT > 0 {
+			count++
+		}
+	}
+	return count
+}