mirror of
https://github.com/nats-io/nats.go.git
synced 2025-09-26 20:41:41 +08:00
c693ec3784
This fixes an issue where a deadlock could occur when calling `Stop()` or `Drain()` on `ConsumeContext` or `MessagesContext` and then calling `Consume` or `Messages` immediately. Switched to using a type-safe implementation of `sync.Map` for subscriptions map instead of locking the whole consumer state. Additionally, changed the type of atomic flags from `uint32` to `atomic.UInt32` to avoid accidental non-atomic reads/writes. Signed-off-by: Piotr Piotrowski <piotr@synadia.com> --------- Signed-off-by: Piotr Piotrowski <piotr@synadia.com>
74 lines
1.8 KiB
Go
74 lines
1.8 KiB
Go
// Copyright 2024 The NATS 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 syncx
|
|
|
|
import "sync"
|
|
|
|
// Map is a type-safe wrapper around sync.Map.
|
|
// It is safe for concurrent use.
|
|
// The zero value of Map is an empty map ready to use.
|
|
type Map[K comparable, V any] struct {
|
|
m sync.Map
|
|
}
|
|
|
|
func (m *Map[K, V]) Load(key K) (V, bool) {
|
|
v, ok := m.m.Load(key)
|
|
if !ok {
|
|
var empty V
|
|
return empty, false
|
|
}
|
|
return v.(V), true
|
|
}
|
|
|
|
func (m *Map[K, V]) Store(key K, value V) {
|
|
m.m.Store(key, value)
|
|
}
|
|
|
|
func (m *Map[K, V]) Delete(key K) {
|
|
m.m.Delete(key)
|
|
}
|
|
|
|
func (m *Map[K, V]) Range(f func(key K, value V) bool) {
|
|
m.m.Range(func(key, value any) bool {
|
|
return f(key.(K), value.(V))
|
|
})
|
|
}
|
|
|
|
func (m *Map[K, V]) LoadOrStore(key K, value V) (V, bool) {
|
|
v, loaded := m.m.LoadOrStore(key, value)
|
|
return v.(V), loaded
|
|
}
|
|
|
|
func (m *Map[K, V]) LoadAndDelete(key K) (V, bool) {
|
|
v, ok := m.m.LoadAndDelete(key)
|
|
if !ok {
|
|
var empty V
|
|
return empty, false
|
|
}
|
|
return v.(V), true
|
|
}
|
|
|
|
func (m *Map[K, V]) CompareAndSwap(key K, old, new V) bool {
|
|
return m.m.CompareAndSwap(key, old, new)
|
|
}
|
|
|
|
func (m *Map[K, V]) CompareAndDelete(key K, value V) bool {
|
|
return m.m.CompareAndDelete(key, value)
|
|
}
|
|
|
|
func (m *Map[K, V]) Swap(key K, value V) (V, bool) {
|
|
previous, loaded := m.m.Swap(key, value)
|
|
return previous.(V), loaded
|
|
}
|