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Fix IndexOutOfRangeException caused by CheckArgType concurrency #1063

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Merged
merged 1 commit into from
May 27, 2025

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yileicn
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@yileicn yileicn commented May 25, 2025

Fix IndexOutOfRangeException caused by CheckArgType concurrency

@GGHansome
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Code Review Summary

Change Overview: The code modification involves replacing Dictionary<string, string> with ConcurrentDictionary<string, string> for storing agent parameter types, and refactoring some parts of the code to enhance concurrency control and improve efficiency by avoiding redundant operations.

Identified Issues

Issue 1: [Concurrency Suitability]

  • Description: Changed the Dictionary to ConcurrentDictionary for handling concurrent data access. However, the use of some TryAdd operations was inappropriate when values were directly assigned, which is not the best practice for ConcurrentDictionary.
  • Suggestion: The changes effectively use ConcurrentDictionary methods, such as replacing TryAdd with direct assignments like parameterTypes[name] = value;, which ensures thread safety and correct updates in concurrent environments.
  • Example:
    // Before
    parameterTypes.TryAdd(rule.Field, rule.FieldType);
    // After
    parameterTypes[rule.Field] = rule.FieldType;

Issue 2: [Logical Redundancy]

  • Description: The code previously attempted to add entries after processing data, which could lead to redundant checks and less efficient operations.
  • Suggestion: Using ConcurrentDictionary.GetOrAdd is a more efficient approach as it reduces the need for repetitive null checks and prevents unnecessary reassignments of collections.

Issue 3: [Method Optimization]

  • Description: The new code optimizes the method by reducing unnecessary assignments and method calls, such as AgentParameterTypes.TryAdd(agentId, parameterTypes);.
  • Suggestion: The updated method efficiently handles the data and bypasses unnecessary operations, thus enhancing performance.

Overall Evaluation

The code modifications effectively improve concurrency management and optimize the existing logic for updating parameter types. It addresses potential threading issues and enhances maintainability by utilizing better data structures and methods that make the code more streamlined and efficient.

@Oceania2018 Oceania2018 merged commit f5c5f8e into SciSharp:master May 27, 2025
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3 participants