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Optimize the sql generator hot path

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This commit is contained in:
Vikram Rangnekar
2019-06-07 20:53:08 -04:00
parent 5f6ea226a3
commit 0b7512cf94
6 changed files with 453 additions and 397 deletions
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19
serv/core.go
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@ -321,7 +321,7 @@ func (c *coreContext) render(w io.Writer, data []byte) error {
return json.NewEncoder(w).Encode(c.res)
}
func (c *coreContext) addTrace(sel []qcode.Select, id int16, st time.Time) {
func (c *coreContext) addTrace(sel []qcode.Select, id int32, st time.Time) {
et := time.Now()
du := et.Sub(st)
@ -336,15 +336,18 @@ func (c *coreContext) addTrace(sel []qcode.Select, id int16, st time.Time) {
c.res.Extensions.Tracing.EndTime = et
c.res.Extensions.Tracing.Duration = du
n := 0
for i := id; i != -1; i = sel[i].ParentID {
n := 1
for i := id; i != 0; i = sel[i].ParentID {
n++
}
path := make([]string, n)
n--
for i := id; i != -1; i = sel[i].ParentID {
for i := id; ; i = sel[i].ParentID {
path[n] = sel[i].Table
if sel[i].ID == 0 {
break
}
n--
}
@ -368,7 +371,7 @@ func parentFieldIds(h *xxhash.Digest, sel []qcode.Select, skipped uint32) (
c := 0
for i := range sel {
s := &sel[i]
if isSkipped(skipped, uint16(s.ID)) {
if isSkipped(skipped, uint32(s.ID)) {
c++
}
}
@ -385,7 +388,7 @@ func parentFieldIds(h *xxhash.Digest, sel []qcode.Select, skipped uint32) (
for i := range sel {
s := &sel[i]
if isSkipped(skipped, uint16(s.ID)) == false {
if isSkipped(skipped, uint32(s.ID)) == false {
continue
}
@ -404,7 +407,7 @@ func parentFieldIds(h *xxhash.Digest, sel []qcode.Select, skipped uint32) (
return fm, sm
}
func isSkipped(n uint32, pos uint16) bool {
func isSkipped(n uint32, pos uint32) bool {
return ((n & (1 << pos)) != 0)
}