agents

%% time_travel_debugging.erl
%% Time-travel debugging and process replay system
%% Advanced debugging with process history recording and deterministic replay
-module(time_travel_debugging).
-behaviour(gen_server).

-export([
    start_link/0,
    start_recording/2,
    stop_recording/1,
    create_checkpoint/2,
    replay_from_checkpoint/3,
    time_travel_to_point/3,
    record_process_tree/2,
    replay_process_tree/3,
    debug_message_flow/3,
    causality_analysis/2,
    temporal_breakpoint/3,
    reverse_execution/3,
    differential_debugging/4,
    distributed_replay/3,
    quantum_state_debugging/2
]).

-export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]).

-define(RECORDING_REGISTRY, process_recording_registry).
-define(CHECKPOINT_STORAGE, checkpoint_storage).
-define(MESSAGE_HISTORY, message_flow_history).
-define(TEMPORAL_INDEX, temporal_event_index).

-record(state, {
    active_recordings = #{},
    checkpoints = #{},
    replay_sessions = #{},
    temporal_index,
    causality_analyzer,
    reverse_executor,
    distributed_coordinator,
    quantum_debugger,
    recording_overhead_monitor
}).

-record(process_recording, {
    target_pid,
    recording_id,
    start_time,
    end_time,
    message_history = [],
    state_snapshots = [],
    code_versions = [],
    memory_states = [],
    cpu_usage = [],
    network_events = [],
    file_operations = [],
    system_calls = [],
    garbage_collections = [],
    scheduling_events = [],
    link_events = [],
    monitor_events = [],
    trap_exits = [],
    metadata = #{}
}).

-record(checkpoint, {
    checkpoint_id,
    timestamp,
    process_states = #{},
    message_queues = #{},
    system_state,
    memory_snapshot,
    code_versions = #{},
    network_topology,
    distributed_state = #{},
    quantum_states = #{},
    causality_graph,
    environmental_context = #{}
}).

-record(replay_session, {
    session_id,
    target_processes = [],
    replay_mode, % deterministic, probabilistic, exploratory
    start_checkpoint,
    current_position,
    replay_speed = 1.0,
    breakpoints = [],
    watchpoints = [],
    step_mode = false,
    causality_mode = false,
    distributed_mode = false,
    debug_observers = [],
    replay_statistics = #{}
}).

-record(temporal_event, {
    event_id,
    timestamp,
    event_type, % message, state_change, code_load, gc, schedule, etc.
    process_id,
    event_data,
    causality_links = [],
    quantum_entanglements = [],
    distributed_context = #{},
    metadata = #{}
}).

-record(causality_link, {
    source_event,
    target_event,
    link_type, % happens_before, concurrent, causal_dependency
    strength, % 0.0 to 1.0
    temporal_distance,
    quantum_correlation = undefined
}).

%% Public API

start_link() ->
    gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).

%% Start recording process execution history
start_recording(ProcessId, RecordingOptions) ->
    gen_server:call(?MODULE, {start_recording, ProcessId, RecordingOptions}).

%% Stop recording and save history
stop_recording(RecordingId) ->
    gen_server:call(?MODULE, {stop_recording, RecordingId}).

%% Create system checkpoint for later replay
create_checkpoint(CheckpointId, CheckpointOptions) ->
    gen_server:call(?MODULE, {create_checkpoint, CheckpointId, CheckpointOptions}, 30000).

%% Replay execution from a specific checkpoint
replay_from_checkpoint(CheckpointId, ReplayOptions, ObserverPid) ->
    gen_server:call(?MODULE, {replay_from_checkpoint, CheckpointId, ReplayOptions, ObserverPid}, 60000).

%% Time travel to a specific point in execution history
time_travel_to_point(ProcessId, Timestamp, TravelOptions) ->
    gen_server:call(?MODULE, {time_travel, ProcessId, Timestamp, TravelOptions}).

%% Record entire process tree including supervision hierarchy
record_process_tree(RootPid, TreeOptions) ->
    gen_server:call(?MODULE, {record_tree, RootPid, TreeOptions}).

%% Replay entire process tree with coordination
replay_process_tree(TreeCheckpoint, ReplayStrategy, Coordination) ->
    gen_server:call(?MODULE, {replay_tree, TreeCheckpoint, ReplayStrategy, Coordination}).

%% Debug message flow between processes
debug_message_flow(SourcePid, TargetPid, FlowOptions) ->
    gen_server:call(?MODULE, {debug_flow, SourcePid, TargetPid, FlowOptions}).

%% Analyze causality relationships in recorded execution
causality_analysis(RecordingId, AnalysisOptions) ->
    gen_server:call(?MODULE, {causality_analysis, RecordingId, AnalysisOptions}).

%% Set temporal breakpoint at specific execution point
temporal_breakpoint(ProcessId, Condition, BreakpointOptions) ->
    gen_server:call(?MODULE, {temporal_breakpoint, ProcessId, Condition, BreakpointOptions}).

%% Execute in reverse (experimental)
reverse_execution(ProcessId, ReverseSteps, ReverseOptions) ->
    gen_server:call(?MODULE, {reverse_execution, ProcessId, ReverseSteps, ReverseOptions}).

%% Compare two execution traces for differential debugging
differential_debugging(Trace1, Trace2, ComparisonCriteria, AnalysisDepth) ->
    gen_server:call(?MODULE, {differential_debug, Trace1, Trace2, ComparisonCriteria, AnalysisDepth}).

%% Coordinate replay across distributed nodes
distributed_replay(DistributedCheckpoint, NodeCoordination, SyncStrategy) ->
    gen_server:call(?MODULE, {distributed_replay, DistributedCheckpoint, NodeCoordination, SyncStrategy}).

%% Debug quantum-entangled process states
quantum_state_debugging(QuantumProcesses, QuantumOptions) ->
    gen_server:call(?MODULE, {quantum_debug, QuantumProcesses, QuantumOptions}).

%% Gen_server callbacks

init([]) ->
    % Create ETS tables for temporal debugging
    ets:new(?RECORDING_REGISTRY, [named_table, public, {keypos, #process_recording.recording_id}]),
    ets:new(?CHECKPOINT_STORAGE, [named_table, public, {keypos, #checkpoint.checkpoint_id}]),
    ets:new(?MESSAGE_HISTORY, [named_table, public, ordered_set]),
    ets:new(?TEMPORAL_INDEX, [named_table, public, ordered_set]),
    
    % Start supporting processes
    TemporalIndex = spawn_link(fun() -> temporal_indexer_loop(#{}) end),
    CausalityAnalyzer = spawn_link(fun() -> causality_analyzer_loop(#{}) end),
    ReverseExecutor = spawn_link(fun() -> reverse_executor_loop(#{}) end),
    DistributedCoordinator = spawn_link(fun() -> distributed_coordinator_loop(#{}) end),
    QuantumDebugger = spawn_link(fun() -> quantum_debugger_loop(#{}) end),
    OverheadMonitor = spawn_link(fun() -> recording_overhead_monitor_loop(#{}) end),
    
    {ok, #state{
        temporal_index = TemporalIndex,
        causality_analyzer = CausalityAnalyzer,
        reverse_executor = ReverseExecutor,
        distributed_coordinator = DistributedCoordinator,
        quantum_debugger = QuantumDebugger,
        recording_overhead_monitor = OverheadMonitor
    }}.

handle_call({start_recording, ProcessId, Options}, _From, State) ->
    Result = initiate_process_recording(ProcessId, Options, State),
    NewState = update_active_recordings(ProcessId, Result, State),
    {reply, Result, NewState};

handle_call({stop_recording, RecordingId}, _From, State) ->
    Result = finalize_process_recording(RecordingId, State),
    NewState = remove_active_recording(RecordingId, State),
    {reply, Result, NewState};

handle_call({create_checkpoint, CheckpointId, Options}, _From, State) ->
    Result = create_system_checkpoint(CheckpointId, Options, State),
    NewState = store_checkpoint(CheckpointId, Result, State),
    {reply, Result, NewState};

handle_call({replay_from_checkpoint, CheckpointId, Options, Observer}, _From, State) ->
    Result = execute_checkpoint_replay(CheckpointId, Options, Observer, State),
    NewState = register_replay_session(Result, State),
    {reply, Result, NewState};

handle_call({time_travel, ProcessId, Timestamp, Options}, _From, State) ->
    Result = execute_time_travel(ProcessId, Timestamp, Options, State),
    {reply, Result, State};

handle_call({record_tree, RootPid, Options}, _From, State) ->
    Result = initiate_tree_recording(RootPid, Options, State),
    {reply, Result, State};

handle_call({replay_tree, Checkpoint, Strategy, Coordination}, _From, State) ->
    Result = execute_tree_replay(Checkpoint, Strategy, Coordination, State),
    {reply, Result, State};

handle_call({debug_flow, SourcePid, TargetPid, Options}, _From, State) ->
    Result = analyze_message_flow(SourcePid, TargetPid, Options, State),
    {reply, Result, State};

handle_call({causality_analysis, RecordingId, Options}, _From, State) ->
    Result = perform_causality_analysis(RecordingId, Options, State),
    {reply, Result, State};

handle_call({temporal_breakpoint, ProcessId, Condition, Options}, _From, State) ->
    Result = set_temporal_breakpoint(ProcessId, Condition, Options, State),
    {reply, Result, State};

handle_call({reverse_execution, ProcessId, Steps, Options}, _From, State) ->
    Result = execute_reverse_execution(ProcessId, Steps, Options, State),
    {reply, Result, State};

handle_call({differential_debug, Trace1, Trace2, Criteria, Depth}, _From, State) ->
    Result = perform_differential_debugging(Trace1, Trace2, Criteria, Depth, State),
    {reply, Result, State};

handle_call({distributed_replay, Checkpoint, Coordination, Strategy}, _From, State) ->
    Result = coordinate_distributed_replay(Checkpoint, Coordination, Strategy, State),
    {reply, Result, State};

handle_call({quantum_debug, Processes, Options}, _From, State) ->
    Result = debug_quantum_states(Processes, Options, State),
    {reply, Result, State};

handle_call(_Request, _From, State) ->
    {reply, {error, unknown_request}, State}.

handle_cast({record_event, Event}, State) ->
    record_temporal_event(Event),
    {noreply, State};

handle_cast({replay_step, SessionId, Step}, State) ->
    execute_replay_step(SessionId, Step),
    {noreply, State};

handle_cast({breakpoint_hit, ProcessId, BreakpointData}, State) ->
    handle_temporal_breakpoint_hit(ProcessId, BreakpointData),
    {noreply, State};

handle_cast({causality_update, CausalityData}, State) ->
    update_causality_graph(CausalityData),
    {noreply, State};

handle_cast(_Msg, State) ->
    {noreply, State}.

handle_info({recording_event, ProcessId, EventData}, State) ->
    process_recording_event(ProcessId, EventData),
    {noreply, State};

handle_info({replay_timer, SessionId}, State) ->
    advance_replay_session(SessionId),
    {noreply, State};

handle_info({checkpoint_gc, CheckpointId}, State) ->
    garbage_collect_old_checkpoint(CheckpointId),
    {noreply, State};

handle_info({distributed_sync, SyncData}, State) ->
    handle_distributed_synchronization(SyncData),
    {noreply, State};

handle_info(_Info, State) ->
    {noreply, State}.

terminate(_Reason, _State) ->
    ok.

code_change(_OldVsn, State, _Extra) ->
    {ok, State}.

%% Core Implementation

initiate_process_recording(ProcessId, Options, State) ->
    try
        % Phase 1: Validate target process
        case is_process_alive(ProcessId) of
            true ->
                % Phase 2: Create recording configuration
                RecordingId = generate_recording_id(),
                RecordingConfig = create_recording_config(ProcessId, Options),
                
                % Phase 3: Install recording probes
                ProbeResult = install_recording_probes(ProcessId, RecordingConfig),
                
                case ProbeResult of
                    {ok, Probes} ->
                        % Phase 4: Start temporal indexing
                        start_temporal_indexing(RecordingId, ProcessId),
                        
                        % Phase 5: Initialize recording state
                        Recording = #process_recording{
                            target_pid = ProcessId,
                            recording_id = RecordingId,
                            start_time = erlang:system_time(microsecond),
                            metadata = maps:merge(Options, #{probes => Probes})
                        },
                        
                        % Phase 6: Register recording
                        ets:insert(?RECORDING_REGISTRY, Recording),
                        
                        {ok, #{
                            recording_id => RecordingId,
                            target_process => ProcessId,
                            probes_installed => length(Probes),
                            recording_overhead => estimate_recording_overhead(Options)
                        }};
                    {error, ProbeError} ->
                        {error, {probe_installation_failed, ProbeError}}
                end;
            false ->
                {error, {process_not_alive, ProcessId}}
        end
    catch
        E:R:S ->
            {error, {recording_initialization_failed, E, R, S}}
    end.

create_system_checkpoint(CheckpointId, Options, State) ->
    try
        % Phase 1: Pause all recorded processes (optional)
        PauseResult = maybe_pause_processes(Options),
        
        % Phase 2: Capture process states
        ProcessStates = capture_all_process_states(),
        
        % Phase 3: Capture message queues
        MessageQueues = capture_all_message_queues(),
        
        % Phase 4: Capture system state
        SystemState = capture_system_state(),
        
        % Phase 5: Capture memory snapshot
        MemorySnapshot = capture_memory_snapshot(Options),
        
        % Phase 6: Capture code versions
        CodeVersions = capture_code_versions(),
        
        % Phase 7: Capture network topology
        NetworkTopology = capture_network_topology(),
        
        % Phase 8: Capture distributed state
        DistributedState = capture_distributed_state(),
        
        % Phase 9: Capture quantum states (if applicable)
        QuantumStates = capture_quantum_states(),
        
        % Phase 10: Build causality graph
        CausalityGraph = build_current_causality_graph(),
        
        % Phase 11: Create checkpoint record
        Checkpoint = #checkpoint{
            checkpoint_id = CheckpointId,
            timestamp = erlang:system_time(microsecond),
            process_states = ProcessStates,
            message_queues = MessageQueues,
            system_state = SystemState,
            memory_snapshot = MemorySnapshot,
            code_versions = CodeVersions,
            network_topology = NetworkTopology,
            distributed_state = DistributedState,
            quantum_states = QuantumStates,
            causality_graph = CausalityGraph,
            environmental_context = capture_environmental_context()
        },
        
        % Phase 12: Resume processes if paused
        maybe_resume_processes(PauseResult),
        
        % Phase 13: Store checkpoint
        ets:insert(?CHECKPOINT_STORAGE, Checkpoint),
        
        {ok, #{
            checkpoint_id => CheckpointId,
            timestamp => Checkpoint#checkpoint.timestamp,
            processes_captured => maps:size(ProcessStates),
            memory_size => calculate_memory_size(MemorySnapshot),
            distributed_nodes => maps:size(DistributedState),
            causality_edges => count_causality_edges(CausalityGraph)
        }}
    catch
        E:R:S ->
            {error, {checkpoint_creation_failed, E, R, S}}
    end.

execute_checkpoint_replay(CheckpointId, Options, ObserverPid, State) ->
    case ets:lookup(?CHECKPOINT_STORAGE, CheckpointId) of
        [Checkpoint] ->
            try
                % Phase 1: Create replay session
                SessionId = generate_session_id(),
                ReplaySession = create_replay_session(SessionId, Checkpoint, Options),
                
                % Phase 2: Initialize replay environment
                ReplayEnv = initialize_replay_environment(Checkpoint, Options),
                
                % Phase 3: Restore system state
                restore_system_state(Checkpoint#checkpoint.system_state),
                
                % Phase 4: Restore process states
                RestoreResult = restore_process_states(Checkpoint#checkpoint.process_states),
                
                % Phase 5: Restore message queues
                restore_message_queues(Checkpoint#checkpoint.message_queues),
                
                % Phase 6: Restore code versions
                restore_code_versions(Checkpoint#checkpoint.code_versions),
                
                % Phase 7: Restore network topology
                restore_network_topology(Checkpoint#checkpoint.network_topology),
                
                % Phase 8: Setup replay orchestration
                OrchestrationResult = setup_replay_orchestration(ReplaySession, ObserverPid),
                
                % Phase 9: Start replay execution
                ReplayResult = start_replay_execution(ReplaySession, OrchestrationResult),
                
                {ok, #{
                    session_id => SessionId,
                    checkpoint_restored => CheckpointId,
                    processes_restored => length(RestoreResult),
                    replay_environment => ReplayEnv,
                    orchestration => OrchestrationResult,
                    execution_started => ReplayResult
                }}
            catch
                E:R:S ->
                    {error, {replay_execution_failed, E, R, S}}
            end;
        [] ->
            {error, {checkpoint_not_found, CheckpointId}}
    end.

execute_time_travel(ProcessId, Timestamp, Options, State) ->
    % Time travel to specific execution point
    try
        % Phase 1: Find recording containing the timestamp
        RecordingResult = find_recording_for_time_travel(ProcessId, Timestamp),
        
        case RecordingResult of
            {ok, Recording} ->
                % Phase 2: Locate exact temporal position
                TemporalPosition = locate_temporal_position(Recording, Timestamp),
                
                % Phase 3: Create time travel checkpoint
                TravelCheckpoint = create_time_travel_checkpoint(Recording, TemporalPosition),
                
                % Phase 4: Restore to temporal position
                RestoreResult = restore_to_temporal_position(TravelCheckpoint, Options),
                
                % Phase 5: Setup time travel session
                TravelSession = setup_time_travel_session(ProcessId, TemporalPosition, Options),
                
                {ok, #{
                    process_id => ProcessId,
                    target_timestamp => Timestamp,
                    actual_position => TemporalPosition,
                    travel_checkpoint => TravelCheckpoint,
                    restore_result => RestoreResult,
                    travel_session => TravelSession
                }};
            {error, RecordingError} ->
                {error, {recording_not_found, RecordingError}}
        end
    catch
        E:R:S ->
            {error, {time_travel_failed, E, R, S}}
    end.

perform_causality_analysis(RecordingId, Options, State) ->
    case ets:lookup(?RECORDING_REGISTRY, RecordingId) of
        [Recording] ->
            try
                % Phase 1: Extract temporal events
                TemporalEvents = extract_temporal_events(Recording),
                
                % Phase 2: Build causality graph
                CausalityGraph = build_causality_graph(TemporalEvents, Options),
                
                % Phase 3: Analyze causal relationships
                CausalAnalysis = analyze_causal_relationships(CausalityGraph),
                
                % Phase 4: Detect causality violations
                ViolationAnalysis = detect_causality_violations(CausalityGraph),
                
                % Phase 5: Identify critical paths
                CriticalPaths = identify_critical_causal_paths(CausalityGraph),
                
                % Phase 6: Generate causality insights
                CausalityInsights = generate_causality_insights(CausalAnalysis, Options),
                
                {ok, #{
                    recording_id => RecordingId,
                    temporal_events => length(TemporalEvents),
                    causality_graph => CausalityGraph,
                    causal_analysis => CausalAnalysis,
                    violation_analysis => ViolationAnalysis,
                    critical_paths => CriticalPaths,
                    insights => CausalityInsights
                }}
            catch
                E:R:S ->
                    {error, {causality_analysis_failed, E, R, S}}
            end;
        [] ->
            {error, {recording_not_found, RecordingId}}
    end.

%% Supporting Process Loops

temporal_indexer_loop(State) ->
    receive
        {index_event, Event} ->
            IndexedEvent = create_temporal_index_entry(Event),
            ets:insert(?TEMPORAL_INDEX, IndexedEvent),
            temporal_indexer_loop(State);
        {query_temporal_range, StartTime, EndTime, From} ->
            Events = query_temporal_events(StartTime, EndTime),
            From ! {temporal_events, Events},
            temporal_indexer_loop(State);
        stop ->
            ok
    end.

causality_analyzer_loop(State) ->
    receive
        {analyze_causality, Events, Options, From} ->
            CausalityResult = perform_causality_computation(Events, Options),
            From ! {causality_result, CausalityResult},
            causality_analyzer_loop(State);
        {update_causality_model, ModelUpdate} ->
            NewState = update_causality_analysis_model(ModelUpdate, State),
            causality_analyzer_loop(NewState);
        stop ->
            ok
    end.

reverse_executor_loop(State) ->
    receive
        {reverse_execute, ProcessId, Steps, Options, From} ->
            ReverseResult = perform_reverse_execution(ProcessId, Steps, Options),
            From ! {reverse_result, ReverseResult},
            reverse_executor_loop(State);
        {compute_reverse_state, StateData, From} ->
            ReversedState = compute_reverse_process_state(StateData),
            From ! {reversed_state, ReversedState},
            reverse_executor_loop(State);
        stop ->
            ok
    end.

%% Utility Functions

generate_recording_id() ->
    list_to_binary([
        "recording_",
        atom_to_list(node()),
        "_",
        integer_to_list(erlang:system_time(microsecond))
    ]).

generate_session_id() ->
    list_to_binary([
        "session_",
        atom_to_list(node()),
        "_",
        integer_to_list(erlang:system_time(microsecond))
    ]).

%% Placeholder implementations for complex debugging operations
create_recording_config(_ProcessId, _Options) -> recording_config.
install_recording_probes(_ProcessId, _Config) -> {ok, [probe1, probe2]}.
start_temporal_indexing(_RecordingId, _ProcessId) -> ok.
estimate_recording_overhead(_Options) -> 0.05.
finalize_process_recording(_RecordingId, _State) -> {ok, finalized}.
update_active_recordings(_ProcessId, _Result, State) -> State.
remove_active_recording(_RecordingId, State) -> State.
store_checkpoint(_CheckpointId, _Result, State) -> State.
register_replay_session(_Result, State) -> State.
maybe_pause_processes(_Options) -> no_pause.
capture_all_process_states() -> #{}.
capture_all_message_queues() -> #{}.
capture_system_state() -> system_state.
capture_memory_snapshot(_Options) -> memory_snapshot.
capture_code_versions() -> #{}.
capture_network_topology() -> network_topology.
capture_distributed_state() -> #{}.
capture_quantum_states() -> #{}.
build_current_causality_graph() -> causality_graph.
capture_environmental_context() -> #{}.
maybe_resume_processes(_PauseResult) -> ok.
calculate_memory_size(_Snapshot) -> 1024.
count_causality_edges(_Graph) -> 42.
create_replay_session(_SessionId, _Checkpoint, _Options) -> replay_session.
initialize_replay_environment(_Checkpoint, _Options) -> replay_env.
restore_system_state(_SystemState) -> ok.
restore_process_states(_ProcessStates) -> [].
restore_message_queues(_MessageQueues) -> ok.
restore_code_versions(_CodeVersions) -> ok.
restore_network_topology(_NetworkTopology) -> ok.
setup_replay_orchestration(_Session, _Observer) -> orchestration_result.
start_replay_execution(_Session, _Orchestration) -> execution_started.
find_recording_for_time_travel(_ProcessId, _Timestamp) -> {ok, recording}.
locate_temporal_position(_Recording, _Timestamp) -> temporal_position.
create_time_travel_checkpoint(_Recording, _Position) -> travel_checkpoint.
restore_to_temporal_position(_Checkpoint, _Options) -> restore_result.
setup_time_travel_session(_ProcessId, _Position, _Options) -> travel_session.
extract_temporal_events(_Recording) -> [].
build_causality_graph(_Events, _Options) -> causality_graph.
analyze_causal_relationships(_Graph) -> causal_analysis.
detect_causality_violations(_Graph) -> violation_analysis.
identify_critical_causal_paths(_Graph) -> critical_paths.
generate_causality_insights(_Analysis, _Options) -> insights.
record_temporal_event(_Event) -> ok.
execute_replay_step(_SessionId, _Step) -> ok.
handle_temporal_breakpoint_hit(_ProcessId, _Data) -> ok.
update_causality_graph(_Data) -> ok.
process_recording_event(_ProcessId, _EventData) -> ok.
advance_replay_session(_SessionId) -> ok.
garbage_collect_old_checkpoint(_CheckpointId) -> ok.
handle_distributed_synchronization(_SyncData) -> ok.
create_temporal_index_entry(_Event) -> temporal_index_entry.
query_temporal_events(_StartTime, _EndTime) -> [].
perform_causality_computation(_Events, _Options) -> causality_result.
update_causality_analysis_model(_Update, State) -> State.
perform_reverse_execution(_ProcessId, _Steps, _Options) -> reverse_result.
compute_reverse_process_state(_StateData) -> reversed_state.
initiate_tree_recording(_RootPid, _Options, _State) -> {ok, tree_recording}.
execute_tree_replay(_Checkpoint, _Strategy, _Coordination, _State) -> {ok, tree_replay}.
analyze_message_flow(_SourcePid, _TargetPid, _Options, _State) -> {ok, flow_analysis}.
set_temporal_breakpoint(_ProcessId, _Condition, _Options, _State) -> {ok, breakpoint_set}.
execute_reverse_execution(_ProcessId, _Steps, _Options, _State) -> {ok, reverse_executed}.
perform_differential_debugging(_Trace1, _Trace2, _Criteria, _Depth, _State) -> {ok, diff_result}.
coordinate_distributed_replay(_Checkpoint, _Coordination, _Strategy, _State) -> {ok, distributed_replay}.
debug_quantum_states(_Processes, _Options, _State) -> {ok, quantum_debug}.
distributed_coordinator_loop(State) -> State.
quantum_debugger_loop(State) -> State.
recording_overhead_monitor_loop(State) -> State.