aboutsummaryrefslogtreecommitdiffstats
path: root/kube2msb/src/vendor/github.com/ugorji/go/codec/helper_unsafe.go
diff options
context:
space:
mode:
Diffstat (limited to 'kube2msb/src/vendor/github.com/ugorji/go/codec/helper_unsafe.go')
-rw-r--r--kube2msb/src/vendor/github.com/ugorji/go/codec/helper_unsafe.go45
1 files changed, 45 insertions, 0 deletions
diff --git a/kube2msb/src/vendor/github.com/ugorji/go/codec/helper_unsafe.go b/kube2msb/src/vendor/github.com/ugorji/go/codec/helper_unsafe.go
new file mode 100644
index 0000000..373b2b1
--- /dev/null
+++ b/kube2msb/src/vendor/github.com/ugorji/go/codec/helper_unsafe.go
@@ -0,0 +1,45 @@
+//+build unsafe
+
+// Copyright (c) 2012-2015 Ugorji Nwoke. All rights reserved.
+// Use of this source code is governed by a MIT license found in the LICENSE file.
+
+package codec
+
+import (
+ "unsafe"
+)
+
+// This file has unsafe variants of some helper methods.
+
+type unsafeString struct {
+ Data uintptr
+ Len int
+}
+
+type unsafeBytes struct {
+ Data uintptr
+ Len int
+ Cap int
+}
+
+// stringView returns a view of the []byte as a string.
+// In unsafe mode, it doesn't incur allocation and copying caused by conversion.
+// In regular safe mode, it is an allocation and copy.
+func stringView(v []byte) string {
+ if len(v) == 0 {
+ return ""
+ }
+ x := unsafeString{uintptr(unsafe.Pointer(&v[0])), len(v)}
+ return *(*string)(unsafe.Pointer(&x))
+}
+
+// bytesView returns a view of the string as a []byte.
+// In unsafe mode, it doesn't incur allocation and copying caused by conversion.
+// In regular safe mode, it is an allocation and copy.
+func bytesView(v string) []byte {
+ if len(v) == 0 {
+ return zeroByteSlice
+ }
+ x := unsafeBytes{uintptr(unsafe.Pointer(&v)), len(v), len(v)}
+ return *(*[]byte)(unsafe.Pointer(&x))
+}