gitee.com/go-spring2/spring-base@v1.1.3/atomic/duration.go (about)

     1  /*
     2   * Copyright 2012-2019 the original author or authors.
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *      https://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  package atomic
    18  
    19  import (
    20  	"sync/atomic"
    21  	"time"
    22  
    23  	"gitee.com/go-spring2/spring-base/json"
    24  )
    25  
    26  // A Duration is an atomic time.Duration value.
    27  type Duration struct {
    28  	_ nocopy
    29  	_ align64
    30  	v int64
    31  }
    32  
    33  // Add atomically adds delta to x and returns the new value.
    34  func (x *Duration) Add(delta time.Duration) time.Duration {
    35  	return time.Duration(atomic.AddInt64(&x.v, int64(delta)))
    36  }
    37  
    38  // Load atomically loads and returns the value stored in x.
    39  func (x *Duration) Load() time.Duration {
    40  	return time.Duration(atomic.LoadInt64(&x.v))
    41  }
    42  
    43  // Store atomically stores val into x.
    44  func (x *Duration) Store(val time.Duration) {
    45  	atomic.StoreInt64(&x.v, int64(val))
    46  }
    47  
    48  // Swap atomically stores new into x and returns the old value.
    49  func (x *Duration) Swap(new time.Duration) time.Duration {
    50  	return time.Duration(atomic.SwapInt64(&x.v, int64(new)))
    51  }
    52  
    53  // CompareAndSwap executes the compare-and-swap operation for x.
    54  func (x *Duration) CompareAndSwap(old, new time.Duration) bool {
    55  	return atomic.CompareAndSwapInt64(&x.v, int64(old), int64(new))
    56  }
    57  
    58  // MarshalJSON returns the JSON encoding of x.
    59  func (x *Duration) MarshalJSON() ([]byte, error) {
    60  	return json.Marshal(x.Load())
    61  }