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refactor: Use std::conditional_variable in signal handler code #2999

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refactor: Use std::conditional_variable in signal handler code #2999

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@jmachowinski jmachowinski commented Nov 24, 2025

Code cleanup to use std::conditional_variable in the signal handler code instead of a custom home brew version.

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Reworked version of
#2998

@jmachowinski jmachowinski mentioned this pull request Nov 24, 2025
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@jmachowinski jmachowinski force-pushed the sync_with_conditional branch 2 times, most recently from 1c2a717 to 096cc95 Compare November 24, 2025 15:23
fujitatomoya
fujitatomoya requested changes Nov 24, 2025
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refactor: Use std::conditional_variable in signal handler code
399f671 
Code cleanup to use std::conditional_variable in the signal handler
code instead of a custom home brew version.

Signed-off-by: Janosch Machowinski <[email protected]>
fujitatomoya
fujitatomoya approved these changes Nov 26, 2025
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@jmachowinski thanks for the fix, i will start the CI.

Note: not only the replacement of custom semaphore notification code for handling signals (SIGINT/SIGTERM) with std::condition_variable and related modern C++ synchronization primitives, but also having dedicated fields (atomic field) for SIGTERM and SIGINT allows the system to reliably record if each signal was received, even if they arrive close together or simultaneously.

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fujitatomoya commented Nov 26, 2025

Pulls: #2999
Gist: https://gist.githubusercontent.com/fujitatomoya/ff163fdb6450f491c07c7afa3dba0ceb/raw/f2952c0364cd9a9d6320782c2b5240aeee5837f2/ros2.repos
BUILD args: --packages-above-and-dependencies ‎rclcpp
TEST args: --packages-above ‎rclcpp
ROS Distro: rolling
Job: ci_launcher
ci_launcher ran: https://ci.ros2.org/job/ci_launcher/17607

  • Linux Build Status
  • Linux-aarch64 Build Status
  • Linux-rhel Build Status
  • Windows Build Status

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fujitatomoya commented Nov 26, 2025

Pulls: #2999
Gist: https://gist.githubusercontent.com/fujitatomoya/09871ad60ca47d4c954d9f9333bb8108/raw/f2952c0364cd9a9d6320782c2b5240aeee5837f2/ros2.repos
BUILD args: --packages-above-and-dependencies rclcpp
TEST args: --packages-above rclcpp
ROS Distro: rolling
Job: ci_launcher
ci_launcher ran: https://ci.ros2.org/job/ci_launcher/17608

  • Linux Build Status
  • Linux-aarch64 Build Status
  • Linux-rhel Build Status
  • Windows Build Status

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@jmachowinski @fujitatomoya