duration: Generate with gen-atomicwrapper
Generate atomic.Duration with gen-valuewrapper by wrapping atomic.Int64.
Use type casts to int64 and time.Duration as pack and unpack.
diff --git a/duration.go b/duration.go
index 92d65f9..30ed6aa 100644
--- a/duration.go
+++ b/duration.go
@@ -1,3 +1,5 @@
+// @generated Code generated by gen-atomicwrapper.
+
// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
@@ -25,65 +27,56 @@
"time"
)
-// Duration is an atomic wrapper around time.Duration
-// https://godoc.org/time#Duration
+// Duration is an atomic type-safe wrapper for time.Duration values.
type Duration struct {
nocmp // disallow non-atomic comparison
v Int64
}
-// NewDuration creates a Duration.
-func NewDuration(d time.Duration) *Duration {
- return &Duration{v: *NewInt64(int64(d))}
+var _zeroDuration time.Duration
+
+// NewDuration creates a new Duration.
+func NewDuration(v time.Duration) *Duration {
+ x := &Duration{}
+ if v != _zeroDuration {
+ x.Store(v)
+ }
+ return x
}
-// Load atomically loads the wrapped value.
-func (d *Duration) Load() time.Duration {
- return time.Duration(d.v.Load())
+// Load atomically loads the wrapped time.Duration.
+func (x *Duration) Load() time.Duration {
+ return time.Duration(x.v.Load())
}
-// Store atomically stores the passed value.
-func (d *Duration) Store(n time.Duration) {
- d.v.Store(int64(n))
+// Store atomically stores the passed time.Duration.
+func (x *Duration) Store(v time.Duration) {
+ x.v.Store(int64(v))
}
-// Add atomically adds to the wrapped time.Duration and returns the new value.
-func (d *Duration) Add(n time.Duration) time.Duration {
- return time.Duration(d.v.Add(int64(n)))
+// CAS is an atomic compare-and-swap for time.Duration values.
+func (x *Duration) CAS(o, n time.Duration) bool {
+ return x.v.CAS(int64(o), int64(n))
}
-// Sub atomically subtracts from the wrapped time.Duration and returns the new value.
-func (d *Duration) Sub(n time.Duration) time.Duration {
- return time.Duration(d.v.Sub(int64(n)))
-}
-
-// Swap atomically swaps the wrapped time.Duration and returns the old value.
-func (d *Duration) Swap(n time.Duration) time.Duration {
- return time.Duration(d.v.Swap(int64(n)))
-}
-
-// CAS is an atomic compare-and-swap.
-func (d *Duration) CAS(old, new time.Duration) bool {
- return d.v.CAS(int64(old), int64(new))
+// Swap atomically stores the given time.Duration and returns the old
+// value.
+func (x *Duration) Swap(o time.Duration) time.Duration {
+ return time.Duration(x.v.Swap(int64(o)))
}
// MarshalJSON encodes the wrapped time.Duration into JSON.
-func (d *Duration) MarshalJSON() ([]byte, error) {
- return json.Marshal(d.Load())
+func (x *Duration) MarshalJSON() ([]byte, error) {
+ return json.Marshal(x.Load())
}
-// UnmarshalJSON decodes JSON into the wrapped time.Duration.
-func (d *Duration) UnmarshalJSON(b []byte) error {
+// UnmarshalJSON decodes a time.Duration from JSON.
+func (x *Duration) UnmarshalJSON(b []byte) error {
var v time.Duration
if err := json.Unmarshal(b, &v); err != nil {
return err
}
- d.Store(v)
+ x.Store(v)
return nil
}
-
-// String encodes the wrapped value as a string.
-func (d *Duration) String() string {
- return d.Load().String()
-}
diff --git a/duration_ext.go b/duration_ext.go
new file mode 100644
index 0000000..6273b66
--- /dev/null
+++ b/duration_ext.go
@@ -0,0 +1,40 @@
+// Copyright (c) 2020 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package atomic
+
+import "time"
+
+//go:generate bin/gen-atomicwrapper -name=Duration -type=time.Duration -wrapped=Int64 -pack=int64 -unpack=time.Duration -cas -swap -json -imports time -file=duration.go
+
+// Add atomically adds to the wrapped time.Duration and returns the new value.
+func (d *Duration) Add(n time.Duration) time.Duration {
+ return time.Duration(d.v.Add(int64(n)))
+}
+
+// Sub atomically subtracts from the wrapped time.Duration and returns the new value.
+func (d *Duration) Sub(n time.Duration) time.Duration {
+ return time.Duration(d.v.Sub(int64(n)))
+}
+
+// String encodes the wrapped value as a string.
+func (d *Duration) String() string {
+ return d.Load().String()
+}
