Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | 54x 54x 75x 75x 52x 92x 99x 99x 17x 18x 4760x 12607x 179x 44x 44x 44x 279x 31x 51x 51x 51x 51x 31x 31x 49x 49x 31x 31x 48x 48x 3083x 3083x 3083x 3083x 2825x 2825x 1655x 65x 65x 65x 65x 61x 61x 60x | type Key = string
type Listener = () => void
const counts = new Map<Key, number>()
const listeners = new Map<Key, Set<Listener>>()
function notify(key: Key): void {
const set = listeners.get(key)
if (set) {
for (const listener of set) {
listener()
}
}
}
export function refCountKey(entityPath: string, params: unknown): Key {
return `${entityPath}:${JSON.stringify(params)}`
}
export function getRefCount(key: Key): number {
return counts.get(key) ?? 0
}
export function incrementRefCount(key: Key): number {
I const next = (counts.get(key) ?? 0) + 1
counts.set(key, next)
notify(key)
return next
}
export fEunction decrementRefCount(key: Key): number {
const current = counts.get(key)
if (current === undefined) {
return 0
}
const next = current - 1
if (next === 0) {
counts.delete(key)
} else {
counts.set(key, next)
}
notify(key)
return next
}
export function subscribeRefCount(key: Key, listener: Listener): () => void {
const set = listeners.get(key) ?? new Set()
set.add(listener)
listeners.set(key, set)
return () => {
set.delete(listener)
if (set.size === 0) {
listeners.delete(key)
}
}
}
|