Initial QSfera import

Server/vendor/github.com/valyala/fastjson/pool.go

@@ -0,0 +1,53 @@
+package fastjson
+
+import (
+	"sync"
+)
+
+// ParserPool may be used for pooling Parsers for similarly typed JSONs.
+type ParserPool struct {
+	pool sync.Pool
+}
+
+// Get returns a Parser from pp.
+//
+// The Parser must be Put to pp after use.
+func (pp *ParserPool) Get() *Parser {
+	v := pp.pool.Get()
+	if v == nil {
+		return &Parser{}
+	}
+	return v.(*Parser)
+}
+
+// Put returns p to pp.
+//
+// p and objects recursively returned from p cannot be used after p
+// is put into pp.
+func (pp *ParserPool) Put(p *Parser) {
+	pp.pool.Put(p)
+}
+
+// ArenaPool may be used for pooling Arenas for similarly typed JSONs.
+type ArenaPool struct {
+	pool sync.Pool
+}
+
+// Get returns an Arena from ap.
+//
+// The Arena must be Put to ap after use.
+func (ap *ArenaPool) Get() *Arena {
+	v := ap.pool.Get()
+	if v == nil {
+		return &Arena{}
+	}
+	return v.(*Arena)
+}
+
+// Put returns a to ap.
+//
+// a and objects created by a cannot be used after a is put into ap.
+func (ap *ArenaPool) Put(a *Arena) {
+	a.Reset()
+	ap.pool.Put(a)
+}