
Worked on the ros2/rosbag2 repository to deliver time-based delayed scheduling and advanced splitting features for recorder and replay services, enhancing workflow flexibility and recording precision. Leveraged C++ and threading to implement a DelayedActionRunner, which uses a worker thread and a time-priority queue to manage scheduled tasks in real time. Extended bag splitting functionality with node_time, publish_time, and receive_time modes, adding timestamp fields across services for consistent timing. Addressed reliability by resolving a race condition and improving Windows timestamp handling. These contributions enabled more deterministic, reproducible recordings and replays, supporting new workflows and improving cross-platform robustness within ROS environments.
February 2026 — rosbag2: Delivered time-based delayed scheduling and splitting features for recorder and replay services, improving recording/replay precision and workflow flexibility. Implemented a DelayedActionRunner using a worker thread and a time-based priority queue to schedule delayed tasks. Extended bag splitting with node_time, publish_time, and receive_time modes and added timestamp fields to relevant services for consistent timing across the stack. Fixed key reliability issues including a race condition in ScheduledActionTask, Windows timestamp initialization in subscription callbacks, and tests adjustments to handle service return codes. These changes broaden business value by enabling more reliable, deterministic bag capture and replay, support for new workflows, and improved cross-platform robustness.
February 2026 — rosbag2: Delivered time-based delayed scheduling and splitting features for recorder and replay services, improving recording/replay precision and workflow flexibility. Implemented a DelayedActionRunner using a worker thread and a time-based priority queue to schedule delayed tasks. Extended bag splitting with node_time, publish_time, and receive_time modes and added timestamp fields to relevant services for consistent timing across the stack. Fixed key reliability issues including a race condition in ScheduledActionTask, Windows timestamp initialization in subscription callbacks, and tests adjustments to handle service return codes. These changes broaden business value by enabling more reliable, deterministic bag capture and replay, support for new workflows, and improved cross-platform robustness.

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