Make Nix builds work

1 files changed, 33 insertions, 0 deletions

diff --git a/vendor/github.com/modern-go/concurrent/go_below_19.go b/vendor/github.com/modern-go/concurrent/go_below_19.go
new file mode 100644
index 0000000..b9c8df7
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/go_below_19.go
@@ -0,0 +1,33 @@
+//+build !go1.9
+
+package concurrent
+
+import "sync"
+
+// Map implements a thread safe map for go version below 1.9 using mutex
+type Map struct {
+        lock sync.RWMutex
+        data map[interface{}]interface{}
+}
+
+// NewMap creates a thread safe map
+func NewMap() *Map {
+        return &Map{
+                data: make(map[interface{}]interface{}, 32),
+        }
+}
+
+// Load is same as sync.Map Load
+func (m *Map) Load(key interface{}) (elem interface{}, found bool) {
+        m.lock.RLock()
+        elem, found = m.data[key]
+        m.lock.RUnlock()
+        return
+}
+
+// Load is same as sync.Map Store
+func (m *Map) Store(key interface{}, elem interface{}) {
+        m.lock.Lock()
+        m.data[key] = elem
+        m.lock.Unlock()
+}