gitee.com/go-spring2/spring-base@v1.1.3/atomic/int32.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  
    22  	"gitee.com/go-spring2/spring-base/json"
    23  )
    24  
    25  // An Int32 is an atomic int32 value.
    26  type Int32 struct {
    27  	_ nocopy
    28  	v int32
    29  }
    30  
    31  // Add atomically adds delta to x and returns the new value.
    32  func (x *Int32) Add(delta int32) (new int32) {
    33  	return atomic.AddInt32(&x.v, delta)
    34  }
    35  
    36  // Load atomically loads and returns the value stored in x.
    37  func (x *Int32) Load() (val int32) {
    38  	return atomic.LoadInt32(&x.v)
    39  }
    40  
    41  // Store atomically stores val into x.
    42  func (x *Int32) Store(val int32) {
    43  	atomic.StoreInt32(&x.v, val)
    44  }
    45  
    46  // Swap atomically stores new into x and returns the old value.
    47  func (x *Int32) Swap(new int32) (old int32) {
    48  	return atomic.SwapInt32(&x.v, new)
    49  }
    50  
    51  // CompareAndSwap executes the compare-and-swap operation for x.
    52  func (x *Int32) CompareAndSwap(old, new int32) (swapped bool) {
    53  	return atomic.CompareAndSwapInt32(&x.v, old, new)
    54  }
    55  
    56  // MarshalJSON returns the JSON encoding of x.
    57  func (x *Int32) MarshalJSON() ([]byte, error) {
    58  	return json.Marshal(x.Load())
    59  }