feat(gsoc'24): Change the implementation of the priority queue to use a heap data structure (#3916)

[niladrix719]

Fixes #112

DO NOT MERGE

Note: This changes were reverted in the main simulator (needs review first)

Stability improvements

ref PR - #3916

Summary by CodeRabbit

• New Features

  • Enhanced the event management system to handle a larger volume of events, increasing capacity from 10,000 to 100,000.

• Performance Improvements

  • Upgraded the EventQueue to a heap-based structure, significantly improving efficiency in adding and removing events.

• Bug Fixes

  • Improved handling of existing elements in the queue during add operations to prevent duplicates.

[netlify]

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[coderabbitai]

Walkthrough

The code changes involve a significant refactor of the EventQueue class, transforming it from a basic priority queue to a heap-based implementation, enhancing its efficiency. Additionally, the capacity of the EventQueue in the simulationArea has been increased from 10,000 to 100,000, allowing for improved event management capabilities.

Changes

Files	Change Summary
src/simulator/src/eventQueue.ts	Refactored EventQueue to a heap-based implementation; renamed frontIndex to backIndex; updated methods for adding, removing, and checking elements in the queue.
src/simulator/src/simulationArea.ts	Increased EventQueue capacity from 10,000 to 100,000.

Assessment against linked issues

Objective	Addressed	Explanation
add: added edit icon on hover in custom shortcuts (#112)	❌	This PR does not address functionality related to custom shortcuts.

Poem

In a queue where events align,
A heap now helps them intertwine.
With space for more, we leap and bound,
As the rabbit hops through data unbound! 🐇✨

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[coderabbitai]

Actionable comments posted: 0

Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between 129048f and 36c79be.

Files selected for processing (2)

• src/simulator/src/eventQueue.ts (2 hunks)
• src/simulator/src/simulationArea.ts (1 hunks)

Additional comments not posted (2)

src/simulator/src/simulationArea.ts (1)

46-46: Increased EventQueue capacity to handle more events.

The change from 10,000 to 100,000 in the queue capacity suggests a significant increase in the expected volume of events. While this can improve the ability to manage more events, it's important to consider the potential memory usage and performance implications during peak loads.

Ensure that the system's memory and performance are tested under simulated high-load scenarios to verify that the increased capacity does not negatively impact the overall system performance.

src/simulator/src/eventQueue.ts (1)

15-141: Transition to heap-based priority queue implementation.

The modifications in the EventQueue class reflect a significant improvement in the efficiency of queue operations. The use of heap properties for element management, particularly in the add and remove methods, should enhance performance by reducing the complexity of these operations.

However, ensure the following:

• The heapifyUp and heapifyDown methods are correctly maintaining the heap properties.
• The error handling in the pop method (throwing 'Queue Empty') aligns with the overall error handling strategy of the application.
• The reset method effectively clears the queue without leaving residual data that could affect subsequent operations.

Overall, these changes are expected to provide robustness and efficiency in handling events within the simulation.

[vedant-jain03]

cc @Prerna-0202