mirror of
https://github.com/espressif/esp-idf.git
synced 2026-10-02 03:00:34 +03:00
Erhan KurubasandClaude Opus 5
c99a63fd18
Move 6 trace-related examples (app_trace_basic, app_trace_to_plot, esp_trace, gcov, sysview_tracing, sysview_tracing_heap_log) from examples/system/ into a dedicated examples/system/tracing/ subdirectory for better organization. Update all path references across documentation (en + zh_CN), build-test-rules, CI configs and component READMEs. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01KZAGzon27T12sGbDPPbZ8G
27 lines
1.6 KiB
ReStructuredText
27 lines
1.6 KiB
ReStructuredText
.. _app_trace-gcov-source-code-coverage:
|
|
|
|
Gcov (Source Code Coverage)
|
|
===========================
|
|
|
|
:link_to_translation:`zh_CN:[中文]`
|
|
|
|
Gcov is a source code coverage analysis tool. In ESP-IDF, coverage data generated on the target is dumped to the host over apptrace (JTAG or UART), where it is turned into standard ``.gcda`` files and processed with the usual host-side tools.
|
|
|
|
Report generation also needs the ``.gcno`` notes files that the compiler generates at build time for each source compiled with ``--coverage``. The host-side tools combine the runtime ``.gcda`` counts with the ``.gcno`` files and the original sources to produce the coverage report.
|
|
|
|
Gcov uses the tracing infrastructure for host data transfer, but it does not yet fully follow the :doc:`esp_trace <index>` encoder/transport model. In particular, it is tied to the apptrace transport (JTAG or UART) and does not support selecting a custom transport.
|
|
|
|
Coverage support is provided by the managed component `espressif/esp_gcov <https://components.espressif.com/components/espressif/esp_gcov>`_. Add it to your project's ``idf_component.yml``:
|
|
|
|
.. code-block:: yaml
|
|
|
|
dependencies:
|
|
espressif/esp_gcov: ^1
|
|
|
|
Coverage data can be dumped either at a hard-coded point in your application (over apptrace via JTAG or UART) or on demand from the host via the OpenOCD ``esp gcov`` command (JTAG only). For the full setup, configuration options, and command usage, see README of the component linked above.
|
|
|
|
Application Example
|
|
-------------------
|
|
|
|
- :example:`system/tracing/gcov` demonstrates how to add code coverage to a project and collect coverage data over JTAG.
|