[pkg] update vendor

1 files changed, 21 insertions, 0 deletions

diff --git a/vendor/github.com/jtolds/gls/gen_sym.go b/vendor/github.com/jtolds/gls/gen_sym.go
new file mode 100644
index 0000000..7f615cc
--- /dev/null
+++ b/vendor/github.com/jtolds/gls/gen_sym.go
@@ -0,0 +1,21 @@
+package gls
+
+import (
+	"sync"
+)
+
+var (
+	keyMtx     sync.Mutex
+	keyCounter uint64
+)
+
+// ContextKey is a throwaway value you can use as a key to a ContextManager
+type ContextKey struct{ id uint64 }
+
+// GenSym will return a brand new, never-before-used ContextKey
+func GenSym() ContextKey {
+	keyMtx.Lock()
+	defer keyMtx.Unlock()
+	keyCounter += 1
+	return ContextKey{id: keyCounter}
+}