This commit fixes issue #4135 by implementing cooperative cancellation
to prevent orphaned threads and resource leaks when task execution times out.
Changes:
- Add deadline tracking to CrewAgentExecutor with set_execution_deadline(),
clear_execution_deadline(), and _check_execution_deadline() methods
- Add deadline check at the start of each iteration in _invoke_loop() and
_ainvoke_loop() to enable cooperative cancellation
- Update _execute_with_timeout() to set the deadline before execution and
use shutdown(wait=False) to return control promptly after timeout
- Update _aexecute_with_timeout() to set the deadline for consistency
- Add comprehensive tests for timeout handling behavior
The fix ensures that:
1. Timeout returns control to the caller promptly
2. Worker threads exit cleanly when they check the deadline
3. Resources are properly cleaned up after timeout
Co-Authored-By: João <joao@crewai.com>
47c698dc86