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Memory leak: ACP session event streams never aborted #9154
Description
Problem
In the ACP (Agent Communication Protocol) module, sessions and their event streams are not properly cleaned up:
- Session Map Growth - Sessions are stored in a Map but never removed when completed
- Event Stream Leaks - Event streams created via
session.stream()are never aborted when sessions end - No Disposal Mechanism - No
dispose()method exists to clean up session resources
Code Location
packages/opencode/src/acp/agent.tspackages/opencode/src/acp/session.tspackages/opencode/src/acp/types.ts
Impact
- Memory grows with each session that completes
- Event stream listeners accumulate
- No way to explicitly clean up session resources
Relates to #5363
Expected Behavior
- Sessions should be removed from Map when completed
- Event streams should be aborted when session ends
- A
dispose()method should be available for explicit cleanup
Activity
github-actions commentedon Jan 17, 2026
This issue is part of a broader set of memory leak issues being tracked. While not direct duplicates, the following related issues address similar resource cleanup problems:
These issues share the root cause of incomplete resource cleanup across different OpenCode modules. Consider reviewing all related memory leak issues together for a comprehensive cleanup strategy.
github-actions commentedon Mar 27, 2026
To stay organized issues are automatically closed after 90 days of no activity. If the issue is still relevant please open a new one.