Function acquireSwiftCacheLock

src/utils/swift-cache.ts:125–160

(
  lockDir: string,
  executablePath: string,
  timeoutMs: number,
)

}

async function acquireSwiftCacheLock(
  lockDir: string,
  executablePath: string,
  timeoutMs: number,
): Promise<(() => Promise<void>) | null> {
  if (isExecutableFile(executablePath)) {
    return null;
  }
  try {
    return await acquireProcessLock({
      lockDirPath: lockDir,
      owner: {
        pid: process.pid,
        startTime: readProcessStartTime(process.pid),
        acquiredAtMs: Date.now(),
      },
      timeoutMs,
      pollMs: LOCK_RETRY_DELAY_MS,
      ownerGraceMs: timeoutMs,
      description: `Swift cache lock: ${lockDir} (${timeoutMs}ms)`,
    });
  } catch (error) {
    if (
      error instanceof AppError &&
      error.message.startsWith('Timed out waiting for Swift cache lock:')
    ) {
      throw new AppError('COMMAND_FAILED', error.message, {
        ...error.details,
        lockDir,
        timeoutMs,
        hint: `Another agent-device process may still be compiling this Swift helper. Retry shortly; if no agent-device process is active, remove "${lockDir}" and retry.`,
      });
    }
    throw error;
  }
}

function isExecutableFile(filePath: string): boolean {
  try {