From f2e5bedea6fb93fbbf68ed8f7153c353cc57a9f0 Mon Sep 17 00:00:00 2001
From: tobi <31960611+tsmethurst@users.noreply.github.com>
Date: Fri, 10 Sep 2021 14:42:14 +0200
Subject: migrate go version to 1.17 (#203)

* migrate go version to 1.17

* update contributing
---
 .../goccy/go-json/internal/decoder/compile_race.go | 36 ++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 vendor/github.com/goccy/go-json/internal/decoder/compile_race.go

(limited to 'vendor/github.com/goccy/go-json/internal/decoder/compile_race.go')

diff --git a/vendor/github.com/goccy/go-json/internal/decoder/compile_race.go b/vendor/github.com/goccy/go-json/internal/decoder/compile_race.go
new file mode 100644
index 000000000..b691bc947
--- /dev/null
+++ b/vendor/github.com/goccy/go-json/internal/decoder/compile_race.go
@@ -0,0 +1,36 @@
+// +build race
+
+package decoder
+
+import (
+	"sync"
+	"unsafe"
+
+	"github.com/goccy/go-json/internal/runtime"
+)
+
+var decMu sync.RWMutex
+
+func CompileToGetDecoder(typ *runtime.Type) (Decoder, error) {
+	typeptr := uintptr(unsafe.Pointer(typ))
+	if typeptr > typeAddr.MaxTypeAddr {
+		return compileToGetDecoderSlowPath(typeptr, typ)
+	}
+
+	index := (typeptr - typeAddr.BaseTypeAddr) >> typeAddr.AddrShift
+	decMu.RLock()
+	if dec := cachedDecoder[index]; dec != nil {
+		decMu.RUnlock()
+		return dec, nil
+	}
+	decMu.RUnlock()
+
+	dec, err := compileHead(typ, map[uintptr]Decoder{})
+	if err != nil {
+		return nil, err
+	}
+	decMu.Lock()
+	cachedDecoder[index] = dec
+	decMu.Unlock()
+	return dec, nil
+}
-- 
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