Merge pull request #8357 from mheon/add_volume_interface_package

Add API for communicating with Docker volume plugins

1 files changed, 18 insertions, 0 deletions

diff --git a/vendor/github.com/docker/go-plugins-helpers/sdk/pool.go b/vendor/github.com/docker/go-plugins-helpers/sdk/pool.go
new file mode 100644
index 000000000..316775973
--- /dev/null
+++ b/vendor/github.com/docker/go-plugins-helpers/sdk/pool.go
@@ -0,0 +1,18 @@
+package sdk
+
+import (
+	"io"
+	"sync"
+)
+
+const buffer32K = 32 * 1024
+
+var buffer32KPool = &sync.Pool{New: func() interface{} { return make([]byte, buffer32K) }}
+
+// copyBuf uses a shared buffer pool with io.CopyBuffer
+func copyBuf(w io.Writer, r io.Reader) (int64, error) {
+	buf := buffer32KPool.Get().([]byte)
+	written, err := io.CopyBuffer(w, r, buf)
+	buffer32KPool.Put(buf)
+	return written, err
+}