ECARX contribution the Time module for the first time

[gordon9901]

Summary

This PR introduces the initial implementation of the TIME module, providing a platform-level time service for automotive systems.
It covers vehicle time synchronization, absolute time management, and a unified time access API, targeting high performance, stability, and automotive-grade reliability.

Contents

This PR includes:

• gPTP-based Vehicle time synchronization daemon
• Absolute Time support using an NTP time source
• Shared-memory-based time publication
• Public TIME C++ APIs exposed via libscore_time
• Built-in diagnostics and synchronization logging
• Mock clock implementations for testing and simulation

Notes

• The architecture separates time synchronization (tsyncd) from time consumption (libscore_time) to keep concerns isolated.
• Time is published via shared memory using a base time combined with a monotonic reference to avoid frequent system clock adjustments.
• The implementation has zero third-party library dependencies and relies only on standard C/C++ and POSIX APIs.
• The design is portable across Linux- and QNX-based automotive platforms.

Testing

• Manual testing was performed against AVNU gPTP slave-related certification test cases:
  • Total test cases: 54
  • Executed: 39
  • Remaining: 15 (planned to be completed later this month)
• Precision validation was performed using a TSN test box:
  • Measured time synchronization accuracy: < 5 µs
• Basic functional validation of:
  • Vehicle Time synchronization and publishing
  • Absolute Time synchronization and publishing
  • Shared memory access from libscore_time

References

• Feature Request: Feature Request for Time score#910
• Contribution Request: [Contribution Request] Time score#1765
• ECARX Contribution Proposal: [Contribution Proposal] Time (ecarx) score#2426

Module Requirements:

• https://eclipse-score.github.io/score/main/features/time/docs/requirements/index.html
• https://eclipse-score.github.io/score/main/requirements/stakeholder/index.html#time

Module Documentation:

• https://eclipse-score.github.io/score/main/features/time/index.html

Known limitations / Future work

• Unit tests are not included in this initial PR and will be added in a follow-up.

Copyright / License

• We keep the ECARX copyright during the pitch phase untdecision by the S-Core architecture community to accept the contribution has been made.

[github-actions]

License Check Results

🚀 The license check job ran with the Bazel command:

bazel run //:license-check

Status: ⚠️ Needs Review

Click to expand output

[License Check Output]
2026/02/28 10:06:39 Downloading https://releases.bazel.build/8.3.0/release/bazel-8.3.0-linux-x86_64...
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ERROR: Skipping '//:license-check': no such target '//:license-check': target 'license-check' not declared in package '' defined by /home/runner/work/inc_time/inc_time/BUILD
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[github-actions]

The created documentation from the pull request is available at: docu-html

[gordon9901]

Our slides：
TIME_SYNC_PITCH_ECARX.pdf