TUN-5261: Collect QUIC metrics about RTT, packets and bytes transfered and log events at tracing level

vendor/github.com/francoispqt/gojay/encode_pool.go

@@ -0,0 +1,50 @@
+package gojay
+
+import (
+	"io"
+	"sync"
+)
+
+var encPool = sync.Pool{
+	New: func() interface{} {
+		return NewEncoder(nil)
+	},
+}
+
+var streamEncPool = sync.Pool{
+	New: func() interface{} {
+		return Stream.NewEncoder(nil)
+	},
+}
+
+func init() {
+	for i := 0; i < 32; i++ {
+		encPool.Put(NewEncoder(nil))
+	}
+	for i := 0; i < 32; i++ {
+		streamEncPool.Put(Stream.NewEncoder(nil))
+	}
+}
+
+// NewEncoder returns a new encoder or borrows one from the pool
+func NewEncoder(w io.Writer) *Encoder {
+	return &Encoder{w: w}
+}
+
+// BorrowEncoder borrows an Encoder from the pool.
+func BorrowEncoder(w io.Writer) *Encoder {
+	enc := encPool.Get().(*Encoder)
+	enc.w = w
+	enc.buf = enc.buf[:0]
+	enc.isPooled = 0
+	enc.err = nil
+	enc.hasKeys = false
+	enc.keys = nil
+	return enc
+}
+
+// Release sends back a Encoder to the pool.
+func (enc *Encoder) Release() {
+	enc.isPooled = 1
+	encPool.Put(enc)
+}