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PORTS: One promise, one resolver (test) (#1022)

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Snarling 2024-01-14 16:05:57 -05:00 committed by GitHub
parent 87c4cbbc57
commit 44f0a77c4e
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1 changed files with 18 additions and 9 deletions
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27
src/NetscriptPort.ts
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@ -21,7 +21,14 @@ export function getPort(n: PortNumber) {
export class Port { export class Port {
data: PortData[] = []; data: PortData[] = [];
resolvers: Resolver[] = []; resolver: Resolver | null = null;
promise: Promise<void> | null = null;
resolve() {
if (!this.resolver) return;
this.resolver();
this.resolver = null;
this.promise = null;
}
} }
export function portHandle(n: PortNumber): NetscriptPort { export function portHandle(n: PortNumber): NetscriptPort {
return { return {
@ -42,9 +49,9 @@ export function writePort(n: PortNumber, value: unknown): PortData | null {
`port.write: Tried to write type ${typeof value}. Only string and number types may be written to ports.`, `port.write: Tried to write type ${typeof value}. Only string and number types may be written to ports.`,
); );
} }
const { data, resolvers } = getPort(n); const { data, resolve } = getPort(n);
data.push(value); data.push(value);
for (const res of resolvers.splice(0, resolvers.length)) res(); resolve();
if (data.length > Settings.MaxPortCapacity) return data.shift() as PortData; if (data.length > Settings.MaxPortCapacity) return data.shift() as PortData;
return null; return null;
} }
@ -55,10 +62,10 @@ export function tryWritePort(n: PortNumber, value: unknown): boolean {
`port.write: Tried to write type ${typeof value}. Only string and number types may be written to ports.`, `port.write: Tried to write type ${typeof value}. Only string and number types may be written to ports.`,
); );
} }
const { data, resolvers } = getPort(n); const { data, resolve } = getPort(n);
if (data.length >= Settings.MaxPortCapacity) return false; if (data.length >= Settings.MaxPortCapacity) return false;
data.push(value); data.push(value);
for (const res of resolvers.splice(0, resolvers.length)) res(); resolve();
return true; return true;
} }
@ -66,7 +73,7 @@ export function readPort(n: PortNumber): PortData {
const port = NetscriptPorts.get(n); const port = NetscriptPorts.get(n);
if (!port || !port.data.length) return emptyPortData; if (!port || !port.data.length) return emptyPortData;
const returnVal = port.data.shift() as PortData; const returnVal = port.data.shift() as PortData;
if (!port.data.length && !port.resolvers.length) NetscriptPorts.delete(n); if (!port.data.length && !port.resolver) NetscriptPorts.delete(n);
return returnVal; return returnVal;
} }
@ -77,8 +84,10 @@ export function peekPort(n: PortNumber): PortData {
} }
function nextWritePort(n: PortNumber) { function nextWritePort(n: PortNumber) {
const { resolvers } = getPort(n); const port = getPort(n);
return new Promise<void>((res) => resolvers.push(res as Resolver)); if (port.promise) return port.promise;
port.promise = new Promise<void>((res) => (port.resolver = res));
return port.promise;
} }
function isFullPort(n: PortNumber) { function isFullPort(n: PortNumber) {
@ -96,6 +105,6 @@ function isEmptyPort(n: PortNumber) {
export function clearPort(n: PortNumber) { export function clearPort(n: PortNumber) {
const port = NetscriptPorts.get(n); const port = NetscriptPorts.get(n);
if (!port) return; if (!port) return;
if (!port.resolvers.length) NetscriptPorts.delete(n); if (!port.resolver) NetscriptPorts.delete(n);
port.data.length = 0; port.data.length = 0;
} }