//! Auto-generated module
//!
//! 🤖 Generated with [SplitRS](https://github.com/cool-japan/splitrs)

use crate::error_handling::{AutogradError, AutogradResult};
use std::collections::HashMap;
use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
use std::sync::{Arc, Mutex};
use std::thread::{self, ThreadId};
use std::time::{Duration, Instant};

use super::functions::AutogradResource;

#[derive(Debug)]
#[allow(dead_code)]
struct BufferInfo {
    size: usize,
    creation_time: Instant,
}
#[derive(Debug, Clone)]
#[allow(dead_code)]
struct NodeInfo {
    operation: String,
    memory_usage: usize,
    creation_time: Instant,
}
/// Comprehensive resource statistics
#[derive(Debug, Clone)]
pub struct ComprehensiveResourceStats {
    pub base_stats: ResourceManagerStats,
    pub tracking_stats: ResourceTrackingStats,
    pub pressure_stats: MemoryPressureStats,
    pub performance_stats: PerformanceStats,
}
/// RAII wrapper for autograd context
#[derive(Debug)]
pub struct AutogradContextGuard {
    pub(super) context_id: usize,
    pub(super) resource_manager: Arc<Mutex<AutogradResourceManager>>,
    pub(super) stats: ResourceStats,
}
impl AutogradContextGuard {
    /// Create a new autograd context guard
    pub fn new(context_id: usize, resource_manager: Arc<Mutex<AutogradResourceManager>>) -> Self {
        Self {
            context_id,
            resource_manager,
            stats: ResourceStats {
                creation_time: Some(Instant::now()),
                last_access_time: Some(Instant::now()),
                access_count: 0,
                memory_usage: 0,
                is_active: true,
            },
        }
    }
    /// Enter gradient computation mode
    pub fn enable_grad(&mut self) -> AutogradResult<()> {
        self.mark_accessed();
        if let Ok(mut manager) = self.resource_manager.lock() {
            manager.set_grad_enabled(self.context_id, true)?;
        }
        Ok(())
    }
    /// Exit gradient computation mode
    pub fn disable_grad(&mut self) -> AutogradResult<()> {
        self.mark_accessed();
        if let Ok(mut manager) = self.resource_manager.lock() {
            manager.set_grad_enabled(self.context_id, false)?;
        }
        Ok(())
    }
    fn mark_accessed(&mut self) {
        self.stats.last_access_time = Some(Instant::now());
        self.stats.access_count += 1;
    }
}
/// Scoped RAII helper for multiple resources
pub struct AutogradScope {
    pub(super) resources: Vec<Box<dyn AutogradResource>>,
    start_time: Instant,
}
impl AutogradScope {
    /// Create a new autograd scope
    pub fn new() -> Self {
        Self {
            resources: Vec::new(),
            start_time: Instant::now(),
        }
    }
    /// Add a resource to this scope
    pub fn add_resource(&mut self, resource: Box<dyn AutogradResource>) {
        self.resources.push(resource);
    }
    /// Get scope duration
    pub fn duration(&self) -> Duration {
        self.start_time.elapsed()
    }
    /// Get total resource size
    pub fn total_size(&self) -> usize {
        self.resources.iter().map(|r| r.resource_size()).sum()
    }
    /// Get resource count by type
    pub fn resource_count_by_type(&self) -> HashMap<String, usize> {
        let mut counts = HashMap::new();
        for resource in &self.resources {
            *counts
                .entry(resource.resource_type().to_string())
                .or_insert(0) += 1;
        }
        counts
    }
    /// Check if all resources are valid
    pub fn all_resources_valid(&self) -> bool {
        self.resources.iter().all(|r| r.is_valid())
    }
}
/// RAII wrapper for thread-local variable environments
#[derive(Debug)]
pub struct VariableEnvironmentGuard {
    thread_id: ThreadId,
    pub(super) environment_id: usize,
    pub(super) variables_count: usize,
    pub(super) memory_usage: usize,
    pub(super) stats: ResourceStats,
}
impl VariableEnvironmentGuard {
    /// Create a new variable environment guard
    pub fn new(environment_id: usize) -> Self {
        Self {
            thread_id: thread::current().id(),
            environment_id,
            variables_count: 0,
            memory_usage: 0,
            stats: ResourceStats {
                creation_time: Some(Instant::now()),
                last_access_time: Some(Instant::now()),
                access_count: 0,
                memory_usage: 0,
                is_active: true,
            },
        }
    }
    /// Register a variable in the environment
    pub fn register_variable(&mut self, variable_size: usize) {
        self.variables_count += 1;
        self.memory_usage += variable_size;
        self.stats.memory_usage = self.memory_usage;
        self.mark_accessed();
    }
    /// Unregister a variable from the environment
    pub fn unregister_variable(&mut self, variable_size: usize) {
        self.variables_count = self.variables_count.saturating_sub(1);
        self.memory_usage = self.memory_usage.saturating_sub(variable_size);
        self.stats.memory_usage = self.memory_usage;
        self.mark_accessed();
    }
    /// Get number of variables in environment
    pub fn variable_count(&self) -> usize {
        self.variables_count
    }
    /// Get thread ID this environment belongs to
    pub fn thread_id(&self) -> ThreadId {
        self.thread_id
    }
    fn mark_accessed(&mut self) {
        self.stats.last_access_time = Some(Instant::now());
        self.stats.access_count += 1;
    }
}
/// Statistics about resource tracking
#[derive(Debug, Clone)]
pub struct ResourceTrackingStats {
    pub total_resources: usize,
    pub total_memory: usize,
    pub type_counts: HashMap<String, usize>,
    pub leak_threshold: Duration,
}
/// RAII wrapper for memory buffers
#[derive(Debug)]
pub struct MemoryBufferGuard {
    pub(super) buffer_id: usize,
    pub(super) size: usize,
    pub(super) buffer_manager: Arc<Mutex<MemoryBufferManager>>,
    pub(super) stats: ResourceStats,
}
impl MemoryBufferGuard {
    /// Create a new memory buffer guard
    pub fn new(
        buffer_id: usize,
        size: usize,
        buffer_manager: Arc<Mutex<MemoryBufferManager>>,
    ) -> Self {
        Self {
            buffer_id,
            size,
            buffer_manager,
            stats: ResourceStats {
                creation_time: Some(Instant::now()),
                last_access_time: Some(Instant::now()),
                access_count: 0,
                memory_usage: size,
                is_active: true,
            },
        }
    }
    /// Get buffer data (mock implementation)
    pub fn as_slice(&mut self) -> Option<&[u8]> {
        self.mark_accessed();
        None
    }
    /// Get mutable buffer data (mock implementation)
    pub fn as_mut_slice(&mut self) -> Option<&mut [u8]> {
        self.mark_accessed();
        None
    }
    fn mark_accessed(&mut self) {
        self.stats.last_access_time = Some(Instant::now());
        self.stats.access_count += 1;
    }
}
#[derive(Debug, Clone, Default)]
pub struct PerformanceStats {
    pub cleanup_operations: usize,
    pub resources_cleaned: usize,
    pub memory_freed: usize,
    pub leak_detections: usize,
    pub pressure_checks: usize,
}
#[derive(Debug, Clone)]
struct ResourceTrackingInfo {
    resource_type: String,
    creation_time: Instant,
    creation_location: String,
    size: usize,
    last_access: Instant,
}
/// Central resource manager for autograd operations
#[derive(Debug)]
pub struct AutogradResourceManager {
    computation_graph_manager: Arc<Mutex<ComputationGraphManager>>,
    gradient_storage_manager: Arc<Mutex<GradientStorageManager>>,
    memory_buffer_manager: Arc<Mutex<MemoryBufferManager>>,
    contexts: HashMap<usize, ContextInfo>,
    next_context_id: usize,
}
impl AutogradResourceManager {
    /// Create a new autograd resource manager
    pub fn new() -> Self {
        Self {
            computation_graph_manager: Arc::new(Mutex::new(ComputationGraphManager::new())),
            gradient_storage_manager: Arc::new(Mutex::new(GradientStorageManager::new())),
            memory_buffer_manager: Arc::new(Mutex::new(MemoryBufferManager::new())),
            contexts: HashMap::new(),
            next_context_id: 0,
        }
    }
    /// Create a new autograd context
    pub fn create_context(
        &mut self,
        manager_ref: Arc<Mutex<AutogradResourceManager>>,
    ) -> AutogradContextGuard {
        let context_id = self.next_context_id;
        self.next_context_id += 1;
        let context_info = ContextInfo {
            grad_enabled: true,
            creation_time: Instant::now(),
        };
        self.contexts.insert(context_id, context_info);
        AutogradContextGuard::new(context_id, manager_ref)
    }
    /// Create a computation graph node
    pub fn create_graph_node(
        &self,
        operation: String,
        memory_usage: usize,
    ) -> AutogradResult<ComputationGraphGuard> {
        let mut manager = self.computation_graph_manager.lock().map_err(|_| {
            AutogradError::gradient_computation(
                "create_graph_node",
                "Failed to lock computation graph manager",
            )
        })?;
        Ok(manager.create_node(
            operation,
            memory_usage,
            self.computation_graph_manager.clone(),
        ))
    }
    /// Create gradient storage
    pub fn create_gradient_storage(
        &self,
        tensor_id: usize,
        size: usize,
    ) -> AutogradResult<GradientStorageGuard> {
        let mut manager = self.gradient_storage_manager.lock().map_err(|_| {
            AutogradError::gradient_computation(
                "create_gradient_storage",
                "Failed to lock gradient storage manager",
            )
        })?;
        Ok(manager.create_gradient_storage(tensor_id, size, self.gradient_storage_manager.clone()))
    }
    /// Create memory buffer
    pub fn create_memory_buffer(&self, size: usize) -> AutogradResult<MemoryBufferGuard> {
        let mut manager = self.memory_buffer_manager.lock().map_err(|_| {
            AutogradError::gradient_computation(
                "create_memory_buffer",
                "Failed to lock memory buffer manager",
            )
        })?;
        manager.create_buffer(size, self.memory_buffer_manager.clone())
    }
    /// Set gradient enabled status for a context
    pub fn set_grad_enabled(&mut self, context_id: usize, enabled: bool) -> AutogradResult<()> {
        if let Some(context_info) = self.contexts.get_mut(&context_id) {
            context_info.grad_enabled = enabled;
            Ok(())
        } else {
            Err(AutogradError::gradient_computation(
                "set_grad_enabled",
                format!("Context {} not found", context_id),
            ))
        }
    }
    /// Cleanup context
    pub fn cleanup_context(&mut self, context_id: usize) -> AutogradResult<()> {
        self.contexts.remove(&context_id);
        Ok(())
    }
    /// Get total resource statistics
    pub fn get_resource_stats(&self) -> ResourceManagerStats {
        let graph_stats = self
            .computation_graph_manager
            .lock()
            .map(|manager| (manager.node_count(), manager.total_memory_usage()))
            .unwrap_or((0, 0));
        let gradient_stats = self
            .gradient_storage_manager
            .lock()
            .map(|manager| (manager.gradient_count(), manager.total_memory_usage()))
            .unwrap_or((0, 0));
        let buffer_stats = self
            .memory_buffer_manager
            .lock()
            .map(|manager| (manager.buffer_count(), manager.total_allocated()))
            .unwrap_or((0, 0));
        ResourceManagerStats {
            graph_nodes: graph_stats.0,
            graph_memory: graph_stats.1,
            gradient_count: gradient_stats.0,
            gradient_memory: gradient_stats.1,
            buffer_count: buffer_stats.0,
            buffer_memory: buffer_stats.1,
            context_count: self.contexts.len(),
            total_memory: graph_stats.1 + gradient_stats.1 + buffer_stats.1,
        }
    }
    /// Cleanup old resources
    pub fn cleanup_old_resources(&self, max_age: Duration) -> AutogradResult<CleanupStats> {
        let graph_cleaned = self
            .computation_graph_manager
            .lock()
            .map_err(|_| {
                AutogradError::gradient_computation(
                    "cleanup_old_resources",
                    "Failed to lock computation graph manager",
                )
            })?
            .cleanup_old_nodes(max_age)?;
        let buffers_cleaned = self
            .memory_buffer_manager
            .lock()
            .map_err(|_| {
                AutogradError::gradient_computation(
                    "cleanup_old_resources",
                    "Failed to lock memory buffer manager",
                )
            })?
            .cleanup_old_buffers(max_age)?;
        Ok(CleanupStats {
            nodes_cleaned: graph_cleaned,
            buffers_cleaned,
        })
    }
}
#[derive(Debug, Clone)]
#[allow(dead_code)]
struct ContextInfo {
    grad_enabled: bool,
    creation_time: Instant,
}
/// Enhanced resource manager with leak detection and pressure monitoring
#[derive(Debug)]
pub struct EnhancedResourceManager {
    base_manager: AutogradResourceManager,
    leak_detector: ResourceLeakDetector,
    pressure_monitor: MemoryPressureMonitor,
    auto_cleanup_enabled: bool,
    performance_stats: PerformanceStats,
}
impl EnhancedResourceManager {
    /// Create a new enhanced resource manager
    pub fn new() -> Self {
        Self {
            base_manager: AutogradResourceManager::new(),
            leak_detector: ResourceLeakDetector::new(),
            pressure_monitor: MemoryPressureMonitor::new(),
            auto_cleanup_enabled: true,
            performance_stats: PerformanceStats::default(),
        }
    }
    /// Register a resource with leak detection
    pub fn register_resource_tracked<T: AutogradResource>(
        &mut self,
        resource: T,
        location: &str,
    ) -> usize {
        let resource_id = self.leak_detector.register_resource(
            resource.resource_type(),
            resource.resource_size(),
            location,
        );
        resource_id
    }
    /// Perform comprehensive resource maintenance
    pub fn perform_maintenance(&mut self) -> MaintenanceResult {
        self.performance_stats.cleanup_operations += 1;
        let leaks = self.leak_detector.detect_leaks();
        self.performance_stats.leak_detections += leaks.len();
        let stats = self.base_manager.get_resource_stats();
        let autograd_memory = stats.total_memory;
        let pressure_level = self.pressure_monitor.check_pressure(autograd_memory);
        self.performance_stats.pressure_checks += 1;
        let mut actions_taken = Vec::new();
        let mut memory_freed = 0usize;
        if self.auto_cleanup_enabled {
            let suggested_actions = self
                .pressure_monitor
                .suggest_cleanup_actions(pressure_level);
            for action in &suggested_actions {
                match self.perform_cleanup_action(action) {
                    Ok(freed) => {
                        memory_freed += freed;
                        actions_taken.push(action.clone());
                    }
                    Err(_) => {}
                }
            }
        }
        self.performance_stats.memory_freed += memory_freed;
        self.performance_stats.resources_cleaned += actions_taken.len();
        MaintenanceResult {
            leaks_detected: leaks,
            pressure_level,
            actions_taken,
            memory_freed,
        }
    }
    /// Perform a specific cleanup action
    fn perform_cleanup_action(&mut self, action: &CleanupAction) -> AutogradResult<usize> {
        match action {
            CleanupAction::RunGarbageCollection => {
                let stats = self
                    .base_manager
                    .cleanup_old_resources(Duration::from_secs(60))?;
                Ok(stats.nodes_cleaned * 1024 + stats.buffers_cleaned * 512)
            }
            CleanupAction::CleanOldGradients => {
                let stats = self
                    .base_manager
                    .cleanup_old_resources(Duration::from_secs(30))?;
                Ok(stats.nodes_cleaned * 1024 + stats.buffers_cleaned * 512)
            }
            CleanupAction::CompactMemoryBuffers => Ok(1024),
            CleanupAction::ReduceCheckpointFrequency => Ok(0),
            CleanupAction::DropOldComputationNodes => {
                let stats = self
                    .base_manager
                    .cleanup_old_resources(Duration::from_secs(120))?;
                Ok(stats.nodes_cleaned * 1024 + stats.buffers_cleaned * 512)
            }
            CleanupAction::EmergencyCleanup => {
                let stats = self
                    .base_manager
                    .cleanup_old_resources(Duration::from_secs(10))?;
                Ok(stats.nodes_cleaned * 2048 + stats.buffers_cleaned * 1024)
            }
        }
    }
    /// Enable or disable automatic cleanup
    pub fn set_auto_cleanup(&mut self, enabled: bool) {
        self.auto_cleanup_enabled = enabled;
    }
    /// Get comprehensive resource statistics
    pub fn get_comprehensive_stats(&self) -> ComprehensiveResourceStats {
        ComprehensiveResourceStats {
            base_stats: self.base_manager.get_resource_stats(),
            tracking_stats: self.leak_detector.get_tracking_stats(),
            pressure_stats: self.pressure_monitor.get_pressure_stats(),
            performance_stats: self.performance_stats.clone(),
        }
    }
}
/// Manager for computation graph resources
#[derive(Debug)]
pub struct ComputationGraphManager {
    nodes: HashMap<usize, NodeInfo>,
    next_id: usize,
}
impl ComputationGraphManager {
    /// Create a new computation graph manager
    pub fn new() -> Self {
        Self {
            nodes: HashMap::new(),
            next_id: 0,
        }
    }
    /// Create a new node and return its guard
    pub fn create_node(
        &mut self,
        operation: String,
        memory_usage: usize,
        manager_ref: Arc<Mutex<ComputationGraphManager>>,
    ) -> ComputationGraphGuard {
        let node_id = self.next_id;
        self.next_id += 1;
        let node_info = NodeInfo {
            operation,
            memory_usage,
            creation_time: Instant::now(),
        };
        self.nodes.insert(node_id, node_info);
        let mut guard = ComputationGraphGuard::new(node_id, manager_ref);
        guard.stats.memory_usage = memory_usage;
        guard
    }
    /// Remove a node
    pub fn remove_node(&mut self, node_id: usize) -> AutogradResult<()> {
        self.nodes.remove(&node_id);
        Ok(())
    }
    /// Get total memory usage
    pub fn total_memory_usage(&self) -> usize {
        self.nodes.values().map(|n| n.memory_usage).sum()
    }
    /// Get node count
    pub fn node_count(&self) -> usize {
        self.nodes.len()
    }
    /// Cleanup old nodes
    pub fn cleanup_old_nodes(&mut self, max_age: Duration) -> AutogradResult<usize> {
        let now = Instant::now();
        let initial_count = self.nodes.len();
        self.nodes
            .retain(|_, node| now.duration_since(node.creation_time) < max_age);
        Ok(initial_count - self.nodes.len())
    }
}
/// Statistics about resource manager state
#[derive(Debug, Clone)]
pub struct ResourceManagerStats {
    pub graph_nodes: usize,
    pub graph_memory: usize,
    pub gradient_count: usize,
    pub gradient_memory: usize,
    pub buffer_count: usize,
    pub buffer_memory: usize,
    pub context_count: usize,
    pub total_memory: usize,
}
/// Suggested cleanup actions
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum CleanupAction {
    RunGarbageCollection,
    CleanOldGradients,
    CompactMemoryBuffers,
    ReduceCheckpointFrequency,
    DropOldComputationNodes,
    EmergencyCleanup,
}
/// Result of maintenance operation
#[derive(Debug, Clone)]
pub struct MaintenanceResult {
    pub leaks_detected: Vec<ResourceLeak>,
    pub pressure_level: MemoryPressureLevel,
    pub actions_taken: Vec<CleanupAction>,
    pub memory_freed: usize,
}
/// Statistics about cleanup operations
#[derive(Debug, Clone)]
pub struct CleanupStats {
    pub nodes_cleaned: usize,
    pub buffers_cleaned: usize,
}
/// RAII wrapper for gradient checkpointing sessions
#[derive(Debug)]
pub struct CheckpointGuard {
    pub(super) checkpoint_id: usize,
    pub(super) checkpoint_data: Option<Vec<u8>>,
    pub(super) memory_usage: usize,
    pub(super) stats: ResourceStats,
}
impl CheckpointGuard {
    /// Create a new checkpoint guard
    pub fn new(checkpoint_id: usize, data: Vec<u8>) -> Self {
        let memory_usage = data.len();
        Self {
            checkpoint_id,
            checkpoint_data: Some(data),
            memory_usage,
            stats: ResourceStats {
                creation_time: Some(Instant::now()),
                last_access_time: Some(Instant::now()),
                access_count: 0,
                memory_usage,
                is_active: true,
            },
        }
    }
    /// Get checkpoint data
    pub fn get_data(&mut self) -> Option<&Vec<u8>> {
        self.mark_accessed();
        self.checkpoint_data.as_ref()
    }
    /// Release checkpoint data early to free memory
    pub fn release_data(&mut self) {
        self.checkpoint_data = None;
        self.memory_usage = 0;
        self.stats.memory_usage = 0;
        self.mark_accessed();
    }
    /// Get checkpoint ID
    pub fn checkpoint_id(&self) -> usize {
        self.checkpoint_id
    }
    fn mark_accessed(&mut self) {
        self.stats.last_access_time = Some(Instant::now());
        self.stats.access_count += 1;
    }
}
/// RAII wrapper for computation graph nodes
#[derive(Debug)]
pub struct ComputationGraphGuard {
    pub(super) node_id: usize,
    pub(super) graph_manager: Arc<Mutex<ComputationGraphManager>>,
    pub(super) stats: ResourceStats,
}
impl ComputationGraphGuard {
    /// Create a new computation graph guard
    pub fn new(node_id: usize, graph_manager: Arc<Mutex<ComputationGraphManager>>) -> Self {
        Self {
            node_id,
            graph_manager,
            stats: ResourceStats {
                creation_time: Some(Instant::now()),
                last_access_time: Some(Instant::now()),
                access_count: 0,
                memory_usage: 0,
                is_active: true,
            },
        }
    }
    /// Get the node ID
    pub fn node_id(&self) -> usize {
        self.node_id
    }
    /// Mark the node as accessed
    pub fn mark_accessed(&mut self) {
        self.stats.last_access_time = Some(Instant::now());
        self.stats.access_count += 1;
    }
}
/// RAII wrapper for profiling sessions
#[derive(Debug)]
#[allow(dead_code)]
pub struct ProfileSessionGuard {
    session_id: usize,
    pub(super) session_name: String,
    start_time: Instant,
    pub(super) is_active: AtomicBool,
    pub(super) collected_samples: AtomicUsize,
    pub(super) stats: ResourceStats,
}
impl ProfileSessionGuard {
    /// Create a new profile session guard
    pub fn new(session_id: usize, session_name: String) -> Self {
        Self {
            session_id,
            session_name,
            start_time: Instant::now(),
            is_active: AtomicBool::new(true),
            collected_samples: AtomicUsize::new(0),
            stats: ResourceStats {
                creation_time: Some(Instant::now()),
                last_access_time: Some(Instant::now()),
                access_count: 0,
                memory_usage: 0,
                is_active: true,
            },
        }
    }
    /// Record a profiling sample
    pub fn record_sample(&mut self) {
        if self.is_active.load(Ordering::Relaxed) {
            self.collected_samples.fetch_add(1, Ordering::Relaxed);
            self.mark_accessed();
        }
    }
    /// Get session duration
    pub fn duration(&self) -> Duration {
        self.start_time.elapsed()
    }
    /// Get number of collected samples
    pub fn sample_count(&self) -> usize {
        self.collected_samples.load(Ordering::Relaxed)
    }
    /// Stop profiling session
    pub fn stop_session(&mut self) {
        self.is_active.store(false, Ordering::Relaxed);
        self.mark_accessed();
    }
    /// Check if session is active
    pub fn is_session_active(&self) -> bool {
        self.is_active.load(Ordering::Relaxed)
    }
    fn mark_accessed(&mut self) {
        self.stats.last_access_time = Some(Instant::now());
        self.stats.access_count += 1;
    }
}
/// Comprehensive RAII factory for creating and managing autograd resource guards
#[derive(Debug, Default)]
pub struct AutogradResourceFactory {
    next_id: AtomicUsize,
}
impl AutogradResourceFactory {
    /// Create a new factory
    pub fn new() -> Self {
        Self {
            next_id: AtomicUsize::new(1),
        }
    }
    /// Create a tensor gradient guard
    pub fn create_tensor_grad_guard(&self, requires_grad: bool) -> TensorGradGuard {
        let id = self.next_id.fetch_add(1, Ordering::Relaxed);
        TensorGradGuard::new(id, requires_grad)
    }
    /// Create a checkpoint guard
    pub fn create_checkpoint_guard(&self, data: Vec<u8>) -> CheckpointGuard {
        let id = self.next_id.fetch_add(1, Ordering::Relaxed);
        CheckpointGuard::new(id, data)
    }
    /// Create a distributed context guard
    pub fn create_distributed_context_guard(
        &self,
        rank: i32,
        world_size: i32,
        is_coordinator: bool,
    ) -> DistributedContextGuard {
        let id = self.next_id.fetch_add(1, Ordering::Relaxed);
        DistributedContextGuard::new(id, rank, world_size, is_coordinator)
    }
    /// Create a profile session guard
    pub fn create_profile_session_guard(&self, session_name: String) -> ProfileSessionGuard {
        let id = self.next_id.fetch_add(1, Ordering::Relaxed);
        ProfileSessionGuard::new(id, session_name)
    }
    /// Create a variable environment guard
    pub fn create_variable_environment_guard(&self) -> VariableEnvironmentGuard {
        let id = self.next_id.fetch_add(1, Ordering::Relaxed);
        VariableEnvironmentGuard::new(id)
    }
}
/// Memory pressure statistics
#[derive(Debug, Clone, Default)]
pub struct MemoryPressureStats {
    pub current_pressure: f64,
    pub average_pressure: f64,
    pub max_pressure: f64,
    pub critical_events: usize,
    pub readings_count: usize,
    pub pressure_threshold: f64,
    pub warning_threshold: f64,
    pub critical_threshold: f64,
}
/// RAII wrapper for gradient storage
#[derive(Debug)]
pub struct GradientStorageGuard {
    pub(super) tensor_id: usize,
    pub(super) storage_size: usize,
    pub(super) gradient_manager: Arc<Mutex<GradientStorageManager>>,
    pub(super) stats: ResourceStats,
}
impl GradientStorageGuard {
    /// Create a new gradient storage guard
    pub fn new(
        tensor_id: usize,
        storage_size: usize,
        gradient_manager: Arc<Mutex<GradientStorageManager>>,
    ) -> Self {
        Self {
            tensor_id,
            storage_size,
            gradient_manager,
            stats: ResourceStats {
                creation_time: Some(Instant::now()),
                last_access_time: Some(Instant::now()),
                access_count: 0,
                memory_usage: storage_size,
                is_active: true,
            },
        }
    }
    /// Get the tensor ID
    pub fn tensor_id(&self) -> usize {
        self.tensor_id
    }
    /// Get gradient data (mock implementation)
    pub fn get_gradient(&mut self) -> Option<Vec<f32>> {
        self.mark_accessed();
        if let Ok(manager) = self.gradient_manager.lock() {
            manager.get_gradient(self.tensor_id)
        } else {
            None
        }
    }
    /// Set gradient data (mock implementation)
    pub fn set_gradient(&mut self, gradient: Vec<f32>) -> AutogradResult<()> {
        self.mark_accessed();
        if let Ok(mut manager) = self.gradient_manager.lock() {
            manager.set_gradient(self.tensor_id, gradient)?;
        }
        Ok(())
    }
    fn mark_accessed(&mut self) {
        self.stats.last_access_time = Some(Instant::now());
        self.stats.access_count += 1;
    }
}
/// RAII wrapper for tensors requiring gradient computation
#[derive(Debug)]
pub struct TensorGradGuard {
    pub(super) tensor_id: usize,
    pub(super) gradient_enabled: bool,
    pub(super) requires_grad_original: bool,
    pub(super) stats: ResourceStats,
}
impl TensorGradGuard {
    /// Create a new tensor gradient guard
    pub fn new(tensor_id: usize, requires_grad: bool) -> Self {
        Self {
            tensor_id,
            gradient_enabled: requires_grad,
            requires_grad_original: requires_grad,
            stats: ResourceStats {
                creation_time: Some(Instant::now()),
                last_access_time: Some(Instant::now()),
                access_count: 0,
                memory_usage: 0,
                is_active: true,
            },
        }
    }
    /// Enable gradient computation for this tensor
    pub fn enable_grad(&mut self) {
        self.gradient_enabled = true;
        self.mark_accessed();
    }
    /// Disable gradient computation for this tensor
    pub fn disable_grad(&mut self) {
        self.gradient_enabled = false;
        self.mark_accessed();
    }
    /// Check if gradients are enabled
    pub fn requires_grad(&self) -> bool {
        self.gradient_enabled
    }
    /// Get tensor ID
    pub fn tensor_id(&self) -> usize {
        self.tensor_id
    }
    fn mark_accessed(&mut self) {
        self.stats.last_access_time = Some(Instant::now());
        self.stats.access_count += 1;
    }
}
/// Manager for memory buffer resources
#[derive(Debug)]
pub struct MemoryBufferManager {
    buffers: HashMap<usize, BufferInfo>,
    next_id: usize,
    total_allocated: usize,
}
impl MemoryBufferManager {
    /// Create a new memory buffer manager
    pub fn new() -> Self {
        Self {
            buffers: HashMap::new(),
            next_id: 0,
            total_allocated: 0,
        }
    }
    /// Create a memory buffer and return its guard
    pub fn create_buffer(
        &mut self,
        size: usize,
        manager_ref: Arc<Mutex<MemoryBufferManager>>,
    ) -> AutogradResult<MemoryBufferGuard> {
        let buffer_id = self.next_id;
        self.next_id += 1;
        let buffer_info = BufferInfo {
            size,
            creation_time: Instant::now(),
        };
        self.buffers.insert(buffer_id, buffer_info);
        self.total_allocated += size;
        Ok(MemoryBufferGuard::new(buffer_id, size, manager_ref))
    }
    /// Release a buffer
    pub fn release_buffer(&mut self, buffer_id: usize) -> AutogradResult<()> {
        if let Some(buffer_info) = self.buffers.remove(&buffer_id) {
            self.total_allocated -= buffer_info.size;
        }
        Ok(())
    }
    /// Get total allocated memory
    pub fn total_allocated(&self) -> usize {
        self.total_allocated
    }
    /// Get buffer count
    pub fn buffer_count(&self) -> usize {
        self.buffers.len()
    }
    /// Cleanup old buffers
    pub fn cleanup_old_buffers(&mut self, max_age: Duration) -> AutogradResult<usize> {
        let now = Instant::now();
        let initial_count = self.buffers.len();
        let mut freed_memory = 0;
        self.buffers.retain(|_, buffer| {
            let should_keep = now.duration_since(buffer.creation_time) < max_age;
            if !should_keep {
                freed_memory += buffer.size;
            }
            should_keep
        });
        self.total_allocated -= freed_memory;
        Ok(initial_count - self.buffers.len())
    }
}
/// Information about a detected resource leak
#[derive(Debug, Clone)]
pub struct ResourceLeak {
    pub resource_id: usize,
    pub resource_type: String,
    pub age: Duration,
    pub idle_time: Duration,
    pub size: usize,
    pub creation_location: String,
}
/// Manager for gradient storage resources
#[derive(Debug)]
pub struct GradientStorageManager {
    gradients: HashMap<usize, Vec<f32>>,
    total_size: usize,
}
impl GradientStorageManager {
    /// Create a new gradient storage manager
    pub fn new() -> Self {
        Self {
            gradients: HashMap::new(),
            total_size: 0,
        }
    }
    /// Create gradient storage and return its guard
    pub fn create_gradient_storage(
        &mut self,
        tensor_id: usize,
        size: usize,
        manager_ref: Arc<Mutex<GradientStorageManager>>,
    ) -> GradientStorageGuard {
        let gradient = vec![0.0; size];
        let storage_size = size * std::mem::size_of::<f32>();
        self.gradients.insert(tensor_id, gradient);
        self.total_size += storage_size;
        GradientStorageGuard::new(tensor_id, storage_size, manager_ref)
    }
    /// Get gradient data
    pub fn get_gradient(&self, tensor_id: usize) -> Option<Vec<f32>> {
        self.gradients.get(&tensor_id).cloned()
    }
    /// Set gradient data
    pub fn set_gradient(&mut self, tensor_id: usize, gradient: Vec<f32>) -> AutogradResult<()> {
        let new_size = gradient.len() * std::mem::size_of::<f32>();
        if let Some(old_gradient) = self.gradients.get(&tensor_id) {
            let old_size = old_gradient.len() * std::mem::size_of::<f32>();
            self.total_size = self.total_size - old_size + new_size;
        } else {
            self.total_size += new_size;
        }
        self.gradients.insert(tensor_id, gradient);
        Ok(())
    }
    /// Release gradient storage
    pub fn release_gradient(&mut self, tensor_id: usize) -> AutogradResult<()> {
        if let Some(gradient) = self.gradients.remove(&tensor_id) {
            let size = gradient.len() * std::mem::size_of::<f32>();
            self.total_size -= size;
        }
        Ok(())
    }
    /// Get total memory usage
    pub fn total_memory_usage(&self) -> usize {
        self.total_size
    }
    /// Get gradient count
    pub fn gradient_count(&self) -> usize {
        self.gradients.len()
    }
}
/// Memory pressure monitor for autograd resources
#[derive(Debug)]
pub struct MemoryPressureMonitor {
    pressure_threshold: f64,
    warning_threshold: f64,
    critical_threshold: f64,
    pub check_interval: Duration,
    last_check: Instant,
    pressure_history: Vec<MemoryPressureReading>,
    max_history_size: usize,
}
impl MemoryPressureMonitor {
    /// Create a new memory pressure monitor
    pub fn new() -> Self {
        Self {
            pressure_threshold: 0.8,
            warning_threshold: 0.85,
            critical_threshold: 0.95,
            check_interval: Duration::from_secs(5),
            last_check: Instant::now(),
            pressure_history: Vec::new(),
            max_history_size: 100,
        }
    }
    /// Check current memory pressure
    pub fn check_pressure(&mut self, autograd_memory: usize) -> MemoryPressureLevel {
        let now = Instant::now();
        if now.duration_since(self.last_check) < self.check_interval {
            return self.get_current_pressure_level();
        }
        self.last_check = now;
        let (total_memory, available_memory) = self.get_system_memory_info();
        let used_memory = total_memory - available_memory;
        let pressure_level = used_memory as f64 / total_memory as f64;
        let reading = MemoryPressureReading {
            timestamp: now,
            pressure_level,
            total_memory,
            available_memory,
            autograd_memory,
        };
        self.pressure_history.push(reading);
        if self.pressure_history.len() > self.max_history_size {
            self.pressure_history.remove(0);
        }
        self.classify_pressure_level(pressure_level)
    }
    /// Get current pressure level without performing a new check
    pub fn get_current_pressure_level(&self) -> MemoryPressureLevel {
        if let Some(last_reading) = self.pressure_history.last() {
            self.classify_pressure_level(last_reading.pressure_level)
        } else {
            MemoryPressureLevel::Low
        }
    }
    /// Classify pressure level based on thresholds
    fn classify_pressure_level(&self, pressure: f64) -> MemoryPressureLevel {
        if pressure >= self.critical_threshold {
            MemoryPressureLevel::Critical
        } else if pressure >= self.warning_threshold {
            MemoryPressureLevel::High
        } else if pressure >= self.pressure_threshold {
            MemoryPressureLevel::Medium
        } else {
            MemoryPressureLevel::Low
        }
    }
    /// Get simplified system memory info
    fn get_system_memory_info(&self) -> (usize, usize) {
        let total_memory = 8 * 1024 * 1024 * 1024;
        let available_memory = total_memory / 2;
        (total_memory, available_memory)
    }
    /// Get memory pressure statistics
    pub fn get_pressure_stats(&self) -> MemoryPressureStats {
        if self.pressure_history.is_empty() {
            return MemoryPressureStats::default();
        }
        let current_pressure = self
            .pressure_history
            .last()
            .expect("pressure_history checked to be non-empty")
            .pressure_level;
        let average_pressure = self
            .pressure_history
            .iter()
            .map(|r| r.pressure_level)
            .sum::<f64>()
            / self.pressure_history.len() as f64;
        let max_pressure = self
            .pressure_history
            .iter()
            .map(|r| r.pressure_level)
            .fold(0.0f64, f64::max);
        let critical_events = self
            .pressure_history
            .iter()
            .filter(|r| r.pressure_level >= self.critical_threshold)
            .count();
        MemoryPressureStats {
            current_pressure,
            average_pressure,
            max_pressure,
            critical_events,
            readings_count: self.pressure_history.len(),
            pressure_threshold: self.pressure_threshold,
            warning_threshold: self.warning_threshold,
            critical_threshold: self.critical_threshold,
        }
    }
    /// Suggest cleanup actions based on pressure level
    pub fn suggest_cleanup_actions(
        &self,
        pressure_level: MemoryPressureLevel,
    ) -> Vec<CleanupAction> {
        match pressure_level {
            MemoryPressureLevel::Low => vec![],
            MemoryPressureLevel::Medium => {
                vec![
                    CleanupAction::RunGarbageCollection,
                    CleanupAction::CleanOldGradients,
                ]
            }
            MemoryPressureLevel::High => {
                vec![
                    CleanupAction::RunGarbageCollection,
                    CleanupAction::CleanOldGradients,
                    CleanupAction::CompactMemoryBuffers,
                    CleanupAction::ReduceCheckpointFrequency,
                ]
            }
            MemoryPressureLevel::Critical => {
                vec![
                    CleanupAction::EmergencyCleanup,
                    CleanupAction::RunGarbageCollection,
                    CleanupAction::CleanOldGradients,
                    CleanupAction::CompactMemoryBuffers,
                    CleanupAction::ReduceCheckpointFrequency,
                    CleanupAction::DropOldComputationNodes,
                ]
            }
        }
    }
}
#[derive(Debug, Clone)]
#[allow(dead_code)]
pub struct MemoryPressureReading {
    timestamp: Instant,
    pressure_level: f64,
    total_memory: usize,
    available_memory: usize,
    autograd_memory: usize,
}
/// RAII wrapper for distributed training contexts
#[derive(Debug)]
pub struct DistributedContextGuard {
    pub(super) context_id: usize,
    rank: i32,
    world_size: i32,
    pub(super) communication_buffers: Vec<Vec<u8>>,
    is_coordinator: bool,
    pub(super) stats: ResourceStats,
}
impl DistributedContextGuard {
    /// Create a new distributed context guard
    pub fn new(context_id: usize, rank: i32, world_size: i32, is_coordinator: bool) -> Self {
        Self {
            context_id,
            rank,
            world_size,
            communication_buffers: Vec::new(),
            is_coordinator,
            stats: ResourceStats {
                creation_time: Some(Instant::now()),
                last_access_time: Some(Instant::now()),
                access_count: 0,
                memory_usage: 0,
                is_active: true,
            },
        }
    }
    /// Add a communication buffer
    pub fn add_communication_buffer(&mut self, buffer: Vec<u8>) {
        self.stats.memory_usage += buffer.len();
        self.communication_buffers.push(buffer);
        self.mark_accessed();
    }
    /// Get rank
    pub fn rank(&self) -> i32 {
        self.rank
    }
    /// Get world size
    pub fn world_size(&self) -> i32 {
        self.world_size
    }
    /// Check if this is the coordinator
    pub fn is_coordinator(&self) -> bool {
        self.is_coordinator
    }
    /// Clean up all communication buffers
    pub fn cleanup_buffers(&mut self) {
        self.communication_buffers.clear();
        self.stats.memory_usage = 0;
        self.mark_accessed();
    }
    fn mark_accessed(&mut self) {
        self.stats.last_access_time = Some(Instant::now());
        self.stats.access_count += 1;
    }
}
/// Statistics about a resource
#[derive(Debug, Clone, Default)]
pub struct ResourceStats {
    pub creation_time: Option<Instant>,
    pub last_access_time: Option<Instant>,
    pub access_count: usize,
    pub memory_usage: usize,
    pub is_active: bool,
}
/// Advanced resource leak detector
#[derive(Debug)]
pub struct ResourceLeakDetector {
    tracking_enabled: bool,
    resource_history: HashMap<usize, ResourceTrackingInfo>,
    leak_threshold: Duration,
    next_resource_id: usize,
}
impl ResourceLeakDetector {
    /// Create a new resource leak detector
    pub fn new() -> Self {
        Self {
            tracking_enabled: true,
            resource_history: HashMap::new(),
            leak_threshold: Duration::from_secs(300),
            next_resource_id: 1,
        }
    }
    /// Register a new resource for tracking
    pub fn register_resource(&mut self, resource_type: &str, size: usize, location: &str) -> usize {
        if !self.tracking_enabled {
            return 0;
        }
        let resource_id = self.next_resource_id;
        self.next_resource_id += 1;
        let tracking_info = ResourceTrackingInfo {
            resource_type: resource_type.to_string(),
            creation_time: Instant::now(),
            creation_location: location.to_string(),
            size,
            last_access: Instant::now(),
        };
        self.resource_history.insert(resource_id, tracking_info);
        resource_id
    }
    /// Unregister a resource when it's cleaned up
    pub fn unregister_resource(&mut self, resource_id: usize) {
        self.resource_history.remove(&resource_id);
    }
    /// Record access to a resource
    pub fn record_access(&mut self, resource_id: usize) {
        if let Some(info) = self.resource_history.get_mut(&resource_id) {
            info.last_access = Instant::now();
        }
    }
    /// Detect potential resource leaks
    pub fn detect_leaks(&self) -> Vec<ResourceLeak> {
        let now = Instant::now();
        let mut leaks = Vec::new();
        for (resource_id, info) in &self.resource_history {
            let age = now.duration_since(info.creation_time);
            let idle_time = now.duration_since(info.last_access);
            if age > self.leak_threshold && idle_time > self.leak_threshold {
                leaks.push(ResourceLeak {
                    resource_id: *resource_id,
                    resource_type: info.resource_type.clone(),
                    age,
                    idle_time,
                    size: info.size,
                    creation_location: info.creation_location.clone(),
                });
            }
        }
        leaks
    }
    /// Get statistics about tracked resources
    pub fn get_tracking_stats(&self) -> ResourceTrackingStats {
        let total_resources = self.resource_history.len();
        let total_memory: usize = self.resource_history.values().map(|info| info.size).sum();
        let mut type_counts = HashMap::new();
        for info in self.resource_history.values() {
            *type_counts.entry(info.resource_type.clone()).or_insert(0) += 1;
        }
        ResourceTrackingStats {
            total_resources,
            total_memory,
            type_counts,
            leak_threshold: self.leak_threshold,
        }
    }
    /// Enable or disable resource tracking
    pub fn set_tracking_enabled(&mut self, enabled: bool) {
        self.tracking_enabled = enabled;
        if !enabled {
            self.resource_history.clear();
        }
    }
    /// Set the threshold for considering a resource as potentially leaked
    pub fn set_leak_threshold(&mut self, threshold: Duration) {
        self.leak_threshold = threshold;
    }
}
/// Memory pressure levels
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum MemoryPressureLevel {
    Low,
    Medium,
    High,
    Critical,
}
