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Signed-off-by: Elena Kolevska <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,102 +1,91 @@ | ||
| /* | ||
| Copyright 2024 The Dapr Authors | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package concurrency | ||
|
|
||
| import "sync" | ||
| import ( | ||
| "sync" | ||
| ) | ||
|
|
||
| type MutexMap struct { | ||
| mu sync.RWMutex // outer lock | ||
| mutex map[string]*sync.RWMutex // inner locks | ||
| type MutexMap[T comparable] struct { | ||
| lock sync.RWMutex | ||
| items map[T]*sync.RWMutex | ||
| } | ||
|
|
||
| func NewMutexMap() *MutexMap { | ||
| return &MutexMap{ | ||
| mutex: make(map[string]*sync.RWMutex), | ||
| func NewMutexMapString() *MutexMap[string] { | ||
| return &MutexMap[string]{ | ||
| items: make(map[string]*sync.RWMutex), | ||
| } | ||
| } | ||
|
|
||
| func (mm *MutexMap) Lock(key string) { | ||
| mm.OuterRLock() | ||
| lock, ok := mm.mutex[key] | ||
| mm.OuterRUnlock() | ||
|
|
||
| func (a *MutexMap[T]) Lock(key T) { | ||
| a.lock.RLock() | ||
| mutex, ok := a.items[key] | ||
| a.lock.RUnlock() | ||
| if !ok { | ||
| mm.OuterLock() | ||
| lock, ok = mm.mutex[key] | ||
| a.lock.Lock() | ||
| mutex, ok = a.items[key] | ||
| if !ok { | ||
| mm.mutex[key] = &sync.RWMutex{} | ||
| lock = mm.mutex[key] | ||
| mutex = &sync.RWMutex{} | ||
| a.items[key] = mutex | ||
| } | ||
| mm.OuterUnlock() | ||
| a.lock.Unlock() | ||
| } | ||
| lock.Lock() | ||
| mutex.Lock() | ||
| } | ||
|
|
||
| func (mm *MutexMap) Unlock(key string) { | ||
| mm.OuterLock() | ||
| defer mm.OuterUnlock() | ||
|
|
||
| if _, ok := mm.mutex[key]; ok { | ||
| mm.mutex[key].Unlock() | ||
| func (a *MutexMap[T]) Unlock(key T) { | ||
| a.lock.RLock() | ||
| mutex, ok := a.items[key] | ||
| a.lock.RUnlock() | ||
| if ok { | ||
| mutex.Unlock() | ||
| } | ||
| } | ||
|
|
||
| func (mm *MutexMap) RLock(key string) { | ||
| mm.OuterRLock() | ||
| lock, ok := mm.mutex[key] | ||
| mm.OuterRUnlock() | ||
|
|
||
| func (a *MutexMap[T]) RLock(key T) { | ||
| a.lock.RLock() | ||
| mutex, ok := a.items[key] | ||
| a.lock.RUnlock() | ||
| if !ok { | ||
| mm.OuterLock() | ||
| lock, ok = mm.mutex[key] | ||
| a.lock.Lock() | ||
| mutex, ok = a.items[key] | ||
| if !ok { | ||
| mm.mutex[key] = &sync.RWMutex{} | ||
| lock = mm.mutex[key] | ||
| mutex = &sync.RWMutex{} | ||
| a.items[key] = mutex | ||
| } | ||
| mm.OuterUnlock() | ||
| } | ||
| lock.RLock() | ||
| } | ||
|
|
||
| func (mm *MutexMap) RUnlock(key string) { | ||
| mm.OuterLock() | ||
| defer mm.OuterUnlock() | ||
|
|
||
| if _, ok := mm.mutex[key]; ok { | ||
| mm.mutex[key].RUnlock() | ||
| a.lock.Unlock() | ||
| } | ||
| mutex.Lock() | ||
| } | ||
|
|
||
| // Add adds a new mutex to the map | ||
| // If the calling code already holds the outer lock, set lock parameter to false | ||
| func (mm *MutexMap) Add(key string) { | ||
| mm.OuterLock() | ||
| defer mm.OuterUnlock() | ||
|
|
||
| if _, ok := mm.mutex[key]; !ok { | ||
| mm.mutex[key] = &sync.RWMutex{} | ||
| func (a *MutexMap[T]) RUnlock(key T) { | ||
| a.lock.RLock() | ||
| mutex, ok := a.items[key] | ||
| a.lock.RUnlock() | ||
| if ok { | ||
| mutex.Unlock() | ||
| } | ||
| } | ||
|
|
||
| // Delete deletes a mutex from the map | ||
| // If the calling code already holds the outer lock, set lock parameter to false | ||
| func (mm *MutexMap) Delete(key string) { | ||
| mm.OuterLock() | ||
| defer mm.OuterUnlock() | ||
|
|
||
| delete(mm.mutex, key) | ||
| } | ||
|
|
||
| func (mm *MutexMap) OuterLock() { | ||
| mm.mu.Lock() | ||
| } | ||
|
|
||
| func (mm *MutexMap) OuterUnlock() { | ||
| mm.mu.Unlock() | ||
| } | ||
|
|
||
| func (mm *MutexMap) OuterRLock() { | ||
| mm.mu.RLock() | ||
| func (a *MutexMap[T]) Delete(key T) { | ||
| a.lock.Lock() | ||
| delete(a.items, key) | ||
| a.lock.Unlock() | ||
| } | ||
|
|
||
| func (mm *MutexMap) OuterRUnlock() { | ||
| mm.mu.RUnlock() | ||
| func (a *MutexMap[T]) Clear() { | ||
| a.lock.Lock() | ||
| a.items = make(map[T]*sync.RWMutex) | ||
| a.lock.Unlock() | ||
| } |
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