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source dump of claude code
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2.8 kB · 79 lines
TypeScript
at main
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980import { logForDebugging } from '../debug.js'import { withResolvers } from '../withResolvers.js'import { requireComputerUseSwift } from './swiftLoader.js'
/** * Shared CFRunLoop pump. Swift's four `@MainActor` async methods * (captureExcluding, captureRegion, apps.listInstalled, resolvePrepareCapture) * and `@ant/computer-use-input`'s key()/keys() all dispatch to * DispatchQueue.main. Under libuv (Node/bun) that queue never drains — the * promises hang. Electron drains it via CFRunLoop so Cowork doesn't need this. * * One refcounted setInterval calls `_drainMainRunLoop` (RunLoop.main.run) * every 1ms while any main-queue-dependent call is pending. Multiple * concurrent drainRunLoop() calls share the single pump via retain/release. */
let pump: ReturnType<typeof setInterval> | undefinedlet pending = 0
function drainTick(cu: ReturnType<typeof requireComputerUseSwift>): void { cu._drainMainRunLoop()}
function retain(): void { pending++ if (pump === undefined) { pump = setInterval(drainTick, 1, requireComputerUseSwift()) logForDebugging('[drainRunLoop] pump started', { level: 'verbose' }) }}
function release(): void { pending-- if (pending <= 0 && pump !== undefined) { clearInterval(pump) pump = undefined logForDebugging('[drainRunLoop] pump stopped', { level: 'verbose' }) pending = 0 }}
const TIMEOUT_MS = 30_000
function timeoutReject(reject: (e: Error) => void): void { reject(new Error(`computer-use native call exceeded ${TIMEOUT_MS}ms`))}
/** * Hold a pump reference for the lifetime of a long-lived registration * (e.g. the CGEventTap Escape handler). Unlike `drainRunLoop(fn)` this has * no timeout — the caller is responsible for calling `releasePump()`. Same * refcount as drainRunLoop calls, so nesting is safe. */export const retainPump = retainexport const releasePump = release
/** * Await `fn()` with the shared drain pump running. Safe to nest — multiple * concurrent drainRunLoop() calls share one setInterval. */export async function drainRunLoop<T>(fn: () => Promise<T>): Promise<T> { retain() let timer: ReturnType<typeof setTimeout> | undefined try { // If the timeout wins the race, fn()'s promise is orphaned — a late // rejection from the native layer would become an unhandledRejection. // Attaching a no-op catch swallows it; the timeout error is what surfaces. // fn() sits inside try so a synchronous throw (e.g. NAPI argument // validation) still reaches release() — otherwise the pump leaks. const work = fn() work.catch(() => {}) const timeout = withResolvers<never>() timer = setTimeout(timeoutReject, TIMEOUT_MS, timeout.reject) return await Promise.race([work, timeout.promise]) } finally { clearTimeout(timer) release() }}