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jce: optimize JceWriter_WriteMap.

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name                  old time/op    new time/op    delta
JceWriter_WriteMap-8    4.09µs ± 3%    2.44µs ± 1%  -40.39%  (p=0.000 n=10+8)

name                  old speed      new speed      delta
JceWriter_WriteMap-8  22.8MB/s ± 3%  38.2MB/s ± 1%  +67.73%  (p=0.000 n=10+8)

name                  old alloc/op   new alloc/op   delta
JceWriter_WriteMap-8    2.34kB ± 0%    1.30kB ± 0%  -44.37%  (p=0.000 n=10+10)

name                  old allocs/op  new allocs/op  delta
JceWriter_WriteMap-8      52.0 ± 0%      30.0 ± 0%  -42.31%  (p=0.000 n=10+10)
This commit is contained in:
wdvxdr 2021-08-17 17:06:00 +08:00
parent 53ac47950c
commit 7bed7a3657
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GPG Key ID: 703F8C071DE7A1B6
2 changed files with 21 additions and 5 deletions
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10
binary/jce/writer.go
View File

@ -160,11 +160,11 @@ func (w *JceWriter) WriteMap(m interface{}, tag int) {
return return
} }
w.writeHead(8, tag) w.writeHead(8, tag)
w.WriteInt32(int32(len(va.MapKeys())), 0) w.WriteInt32(int32(va.Len()), 0)
for _, k := range va.MapKeys() { iter := va.MapRange()
v := va.MapIndex(k) for iter.Next() {
w.WriteObject(k.Interface(), 0) w.WriteObject(iter.Key().Interface(), 0)
w.WriteObject(v.Interface(), 1) w.WriteObject(iter.Value().Interface(), 1)
} }
} }

16
binary/jce/writer_test.go Normal file
View File

@ -0,0 +1,16 @@
package jce
import "testing"
var globalBytes []byte
func BenchmarkJceWriter_WriteMap(b *testing.B) {
var x = globalBytes
for i := 0; i < b.N; i++ {
w := NewJceWriter()
w.WriteMap(req.Map, 0)
x = w.Bytes()
}
globalBytes = x
b.SetBytes(int64(len(globalBytes)))
}