CMake/Help/command/cmake_instrumentation.rst
2025-01-16 09:18:21 -05:00

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cmake_instrumentation
---------------------
.. versionadded:: 4.0
Enables interacting with the
:manual:`CMake Instrumentation API <cmake-instrumentation(7)>`.
This allows for configuring instrumentation at the project-level.
.. code-block:: cmake
cmake_instrumentation(
API_VERSION <version>
DATA_VERSION <version>
[HOOKS <hooks>...]
[QUERIES <queries>...]
[CALLBACK <callback>]
)
The ``API_VERSION`` and ``DATA_VERSION`` must always be given. Currently, the
only supported value for both fields is 1. See :ref:`cmake-instrumentation v1`
for details of the data output content and location.
Each of the optional keywords ``HOOKS``, ``QUERIES``, and ``CALLBACK``
correspond to one of the parameters to the :ref:`cmake-instrumentation v1 Query Files`. Note that the
``CALLBACK`` keyword only accepts a single callback.
Whenever ``cmake_instrumentation`` is invoked, a query file is generated in
``<build>/.cmake/timing/v1/query/generated`` to enable instrumentation
with the provided arguments.
Example
^^^^^^^
The following example shows an invocation of the command and its
equivalent JSON query file.
.. code-block:: cmake
cmake_instrumentation(
API_VERSION 1
DATA_VERSION 1
HOOKS postGenerate preCMakeBuild postCMakeBuild
QUERIES staticSystemInformation dynamicSystemInformation
CALLBACK "${CMAKE_COMMAND} -P /path/to/handle_data.cmake"
)
.. code-block:: json
{
"version": 1,
"hooks": [
"postGenerate", "preCMakeBuild", "postCMakeBuild"
],
"queries": [
"staticSystemInformation", "dynamicSystemInformation"
],
"callbacks": [
"/path/to/cmake -P /path/to/handle_data.cmake"
]
}