Платформа ЦРНП "Мирокод" для разработки проектов
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114 lines
2.5 KiB
114 lines
2.5 KiB
// Copyright 2013, Google Inc. All rights reserved. |
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// Use of this source code is governed by a BSD-style |
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// license that can be found in the LICENSE file. |
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package sync2 |
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import ( |
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"sync" |
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"sync/atomic" |
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"time" |
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) |
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type AtomicInt32 int32 |
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func (i *AtomicInt32) Add(n int32) int32 { |
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return atomic.AddInt32((*int32)(i), n) |
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} |
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func (i *AtomicInt32) Set(n int32) { |
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atomic.StoreInt32((*int32)(i), n) |
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} |
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func (i *AtomicInt32) Get() int32 { |
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return atomic.LoadInt32((*int32)(i)) |
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} |
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func (i *AtomicInt32) CompareAndSwap(oldval, newval int32) (swapped bool) { |
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return atomic.CompareAndSwapInt32((*int32)(i), oldval, newval) |
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} |
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type AtomicUint32 uint32 |
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func (i *AtomicUint32) Add(n uint32) uint32 { |
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return atomic.AddUint32((*uint32)(i), n) |
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} |
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func (i *AtomicUint32) Set(n uint32) { |
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atomic.StoreUint32((*uint32)(i), n) |
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} |
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func (i *AtomicUint32) Get() uint32 { |
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return atomic.LoadUint32((*uint32)(i)) |
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} |
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func (i *AtomicUint32) CompareAndSwap(oldval, newval uint32) (swapped bool) { |
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return atomic.CompareAndSwapUint32((*uint32)(i), oldval, newval) |
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} |
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type AtomicInt64 int64 |
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func (i *AtomicInt64) Add(n int64) int64 { |
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return atomic.AddInt64((*int64)(i), n) |
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} |
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func (i *AtomicInt64) Set(n int64) { |
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atomic.StoreInt64((*int64)(i), n) |
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} |
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func (i *AtomicInt64) Get() int64 { |
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return atomic.LoadInt64((*int64)(i)) |
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} |
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func (i *AtomicInt64) CompareAndSwap(oldval, newval int64) (swapped bool) { |
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return atomic.CompareAndSwapInt64((*int64)(i), oldval, newval) |
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} |
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type AtomicDuration int64 |
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func (d *AtomicDuration) Add(duration time.Duration) time.Duration { |
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return time.Duration(atomic.AddInt64((*int64)(d), int64(duration))) |
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} |
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func (d *AtomicDuration) Set(duration time.Duration) { |
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atomic.StoreInt64((*int64)(d), int64(duration)) |
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} |
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func (d *AtomicDuration) Get() time.Duration { |
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return time.Duration(atomic.LoadInt64((*int64)(d))) |
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} |
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func (d *AtomicDuration) CompareAndSwap(oldval, newval time.Duration) (swapped bool) { |
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return atomic.CompareAndSwapInt64((*int64)(d), int64(oldval), int64(newval)) |
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} |
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// AtomicString gives you atomic-style APIs for string, but |
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// it's only a convenience wrapper that uses a mutex. So, it's |
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// not as efficient as the rest of the atomic types. |
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type AtomicString struct { |
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mu sync.Mutex |
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str string |
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} |
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func (s *AtomicString) Set(str string) { |
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s.mu.Lock() |
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s.str = str |
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s.mu.Unlock() |
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} |
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func (s *AtomicString) Get() string { |
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s.mu.Lock() |
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str := s.str |
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s.mu.Unlock() |
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return str |
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} |
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func (s *AtomicString) CompareAndSwap(oldval, newval string) (swqpped bool) { |
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s.mu.Lock() |
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defer s.mu.Unlock() |
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if s.str == oldval { |
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s.str = newval |
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return true |
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} |
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return false |
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}
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