export interface IControllerProcessIdentity {
    pid: number;
    processGroupId: number;
    processGroupLeader: boolean;
    /** Linux /proc start-time ticks, used to reject PID reuse. */
    startTicks?: string;
    arguments: string[];
    argumentsTruncated?: boolean;
    fingerprint: string;
}
export interface IControllerProcessCandidate {
    identity: IControllerProcessIdentity;
    command: '__serve' | 'foreground';
    port: number;
}
export interface IControllerDataWriterProcessCandidate {
    kind: 'controller' | 'temp-password' | 'flex-child';
    identity: IControllerProcessIdentity;
}
export declare const readControllerProcessIdentity: (pidArg: number) => Promise<IControllerProcessIdentity | null>;
/** Track a previously verified process until its kernel resources are released. */
export declare const controllerProcessIdentityIsLive: (pidArg: number, fingerprintArg: string) => Promise<boolean>;
export declare const readProcessGroupMemberPids: (processGroupIdArg: number) => Promise<number[]>;
export declare const processIdentityHasFileArgument: (identityArg: IControllerProcessIdentity, filePathArg: string, optionsArg?: {
    allowMissingAbsolutePath?: boolean;
}) => Promise<boolean>;
export declare const processIdentityHasCliCommand: (identityArg: IControllerProcessIdentity, cliPathArg: string, commandArg: "__serve" | "__upgrade-worker" | "upgrade" | "start" | "foreground" | "temp-password", optionsArg?: {
    allowMissingAbsolutePath?: boolean;
}) => Promise<boolean>;
export declare const listControllerProcessesForCli: (cliPathArg: string) => Promise<IControllerProcessCandidate[]>;
export declare const listControllerDataWriterProcessesForCli: (cliPathArg: string, optionsArg?: {
    includeInstalledPackagePaths?: boolean;
}) => Promise<IControllerDataWriterProcessCandidate[]>;
export declare const listControllerDataWriterProcessesForCliPaths: (cliPathsArg: readonly string[], optionsArg?: {
    includeInstalledPackagePaths?: boolean;
}) => Promise<IControllerDataWriterProcessCandidate[]>;
export declare const inspectControllerProcess: (optionsArg: {
    pid: number;
    cliPath: string;
    port: number;
    expectedProcessGroupId?: number;
    expectedFingerprint?: string;
    command: "__serve" | "foreground";
}) => Promise<IControllerProcessIdentity | null>;
export declare const signalVerifiedControllerProcess: (optionsArg: {
    pid: number;
    cliPath: string;
    port: number;
    expectedProcessGroupId: number;
    expectedFingerprint: string;
    signal: NodeJS.Signals;
    signalProcessGroup: boolean;
    command: "__serve" | "foreground";
}) => Promise<void>;