| .. zephyr:code-sample:: system_hashmap |
| :name: System hashmap |
| :relevant-api: hashmap_apis |
| |
| Insert, replace, and remove entries in a hashmap. |
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| Overview |
| ******** |
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| This is a simple example that repeatedly: |
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| * inserts up to ``CONFIG_TEST_LIB_HASH_MAP_MAX_ENTRIES`` |
| * replaces up to the same number that were previously inserted |
| * removes all previously inserted keys |
| |
| Building |
| ******** |
| |
| This application can be built on :zephyr:board:`native_sim <native_sim>` as follows: |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/basic/hash_map |
| :host-os: unix |
| :board: native_sim |
| :goals: build |
| :compact: |
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| To build for another board, change "native_sim" above to that board's name. |
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| Additionally, it is possible to use one of the other Hashmap implementations by specifying |
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| * ``CONFIG_SYS_HASH_MAP_CHOICE_SC=y`` (Separate Chaining) |
| * ``CONFIG_SYS_HASH_MAP_CHOICE_OA_LP=y`` (Open Addressing / Linear Probe) |
| * ``CONFIG_SYS_HASH_MAP_CHOICE_CXX=y`` (C Wrapper around the C++ ``std::unordered_map``) |
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| To stress the Hashmap implementation, adjust ``CONFIG_TEST_LIB_HASH_MAP_MAX_ENTRIES``. |
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| Running |
| ******* |
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| Run ``build/zephyr/zephyr.exe`` |
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| Sample Output |
| ************* |
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| .. code-block:: console |
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| System Hashmap sample |
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| [00:00:11.000,000] <inf> hashmap_sample: n_insert: 118200 n_remove: 295500 n_replace: 329061 n_miss: 0 n_error: 0 max_size: 118200 |
| [00:00:11.010,000] <inf> hashmap_sample: success |
