at_exit hook sometimes freeze forever when a rails application executes test codes
還沒有人認領這個 Issue。
評估
研究方向
Start by tracing the debug gem's at_exit hook and its behavior after a fork, using the Rails test-code sequence described in the issue as the reproduction context. Check how it waits for non-Ruby child processes and verify that the process finishes successfully without waiting indefinitely.
由索引模型根據 Issue 內容生成。
描述
Your environment
- ruby 3.4.1 (2024-12-25 revision 48d4efcb85) +PRISM [x86_64-linux]
- rdbg 1.11.0
Describe the bug
This issue is related to https://github.com/ruby/debug/issues/1113.
Since the at_exit hook waits for all child processes other than the Ruby process, it leads to the following problem in the test code of a real Rails application.
- Load the debug gem
- The capybara-playwright-driver starts Playwright as a child process
- The capybara-playwright-driver registers an at_exit hook to terminate Playwright when the test ends
- During test code execution, when a fork occurs, the debug gem registers the at_exit hook
- After all test cases have finished, the debug gem's at_exit hook executes first and waits for the child process to terminate, but since the at_exit hook to terminate Playwright does not execute, it continues to wait indefinitely
This can occur normally if the debug gem is required.
If it happens in a CI execution environment, it could result in unnecessary costs by holding computing resources for a long time.
I believe that waiting for all child processes(including not Ruby process) after a fork occurs is a significant issue.
To Reproduce
I described above.
Expected behavior
process finishes successfully.
- 主要語言
- Ruby
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