Crate perl_lsp_cancellation 

Enhanced LSP cancellation infrastructure with thread-safe atomic operations

This module provides comprehensive cancellation support for Perl LSP operations, including provider-specific cancellation tokens, cleanup coordination, and performance-optimized atomic operations.

Architecture

The cancellation system implements a dual-layer design:

1. Global cancellation registry - Thread-safe coordination of all active requests
2. Provider-specific tokens - Context-aware cancellation with cleanup callbacks

Performance Characteristics

• Cancellation check latency: <100μs using atomic operations
• End-to-end response time: <50ms from $/cancelRequest to error response
• Memory overhead: <1MB for complete cancellation infrastructure
• Thread-safe concurrent operations with zero-copy atomic checks

Macros

check_cancellation

Macro for adding cancellation checkpoints with minimal performance impact

Structs

CancellationMetrics

Performance metrics for cancellation system

CancellationRegistry

Thread-safe cancellation registry for concurrent request coordination

PerlLspCancellationToken

Thread-safe cancellation token with atomic operations Optimized for <100μs check latency using atomic operations

ProviderCleanupContext

Provider cleanup context for graceful cancellation handling

RequestCleanupGuard

RAII guard for automatic cancellation cleanup

Enums

CancellationError

Cancellation errors

Statics

GLOBAL_CANCELLATION_REGISTRY

Default global cancellation registry instance for thread-safe cancellation coordination

Traits

CancellableProvider

Trait for cancellable LSP providers