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pigweed/pigweed/sandbox/7c438d7972fb11bb7a3f2124c2c7cd49c4df30e1
commit
7c438d7972fb11bb7a3f2124c2c7cd49c4df30e1
[log]
author
Carlos Chinchilla <cachinchilla@google.com>
Mon Jul 20 10:26:32 2026 -0700
committer
CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Mon Jul 20 10:26:32 2026 -0700
tree
a94078912e99f33c55b1eb45c94d4a155f036f21
parent
116506db544d2263c7194f5f7433fe1d333a5b7b [diff]
pw_metric: Refactor Metric for 64-bit support

Refactor the core Metric class into a type-discriminated hierarchy:
- UntypedMetric: Common base class stored in intrusive lists. Holds the
  token and type.
- TypedMetric<T>: Templates specializing for float and uint32_t, inheriting
  directly from UntypedMetric and holding their own atomic values.

Minor fixes:
- Save metric value to be used for size calculations and encoding it.
- Move atomic write limits checks inside loop to avoid redundant writes
  to max value.

All services and tests are updated to use the new type-discriminated
UntypedMetric / TypedMetric<T> classes.

Bug: 527616876
TAG=agy
CONV=00d042e4-0d7a-44c6-88b5-7813e806a32e

Change-Id: I9008552049541eb77c1b4ed0850a487deebd2914
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/424534
13 files changed
tree: a94078912e99f33c55b1eb45c94d4a155f036f21
  1. .agents/
  2. .allstar/
  3. .gemini/
  4. .github/
  5. .vscode/
  6. build_overrides/
  7. docker/
  8. docs/
  9. kudzu/
  10. pw_alignment/
  11. pw_allocator/
  12. pw_allocator_zephyr/
  13. pw_analog/
  14. pw_android_toolchain/
  15. pw_arduino_build/
  16. pw_assert/
  17. pw_assert_basic/
  18. pw_assert_fuchsia/
  19. pw_assert_log/
  20. pw_assert_tokenized/
  21. pw_assert_trap/
  22. pw_assert_zephyr/
  23. pw_async/
  24. pw_async2/
  25. pw_async_basic/
  26. pw_async_fuchsia/
  27. pw_atomic/
  28. pw_base64/
  29. pw_bloat/
  30. pw_blob_store/
  31. pw_bluetooth/
  32. pw_bluetooth_hci/
  33. pw_bluetooth_profiles/
  34. pw_bluetooth_proxy/
  35. pw_bluetooth_sapphire/
  36. pw_boot/
  37. pw_boot_cortex_m/
  38. pw_build/
  39. pw_build_android/
  40. pw_build_info/
  41. pw_build_mcuxpresso/
  42. pw_bytes/
  43. pw_change/
  44. pw_channel/
  45. pw_checksum/
  46. pw_chre/
  47. pw_chrono/
  48. pw_chrono_embos/
  49. pw_chrono_freertos/
  50. pw_chrono_rp2040/
  51. pw_chrono_stl/
  52. pw_chrono_threadx/
  53. pw_chrono_zephyr/
  54. pw_cli/
  55. pw_cli_analytics/
  56. pw_clock_tree/
  57. pw_clock_tree_mcuxpresso/
  58. pw_compilation_testing/
  59. pw_config_loader/
  60. pw_console/
  61. pw_containers/
  62. pw_cpu_exception/
  63. pw_cpu_exception_cortex_m/
  64. pw_cpu_exception_risc_v/
  65. pw_crypto/
  66. pw_digital_io/
  67. pw_digital_io_linux/
  68. pw_digital_io_mcuxpresso/
  69. pw_digital_io_rp2040/
  70. pw_digital_io_zephyr/
  71. pw_display/
  72. pw_dma_mcuxpresso/
  73. pw_docgen/
  74. pw_doctor/
  75. pw_elf/
  76. pw_emu/
  77. pw_enum/
  78. pw_env_setup/
  79. pw_env_setup_zephyr/
  80. pw_file/
  81. pw_flatbuffers/
  82. pw_format/
  83. pw_fortifier/
  84. pw_function/
  85. pw_fuzzer/
  86. pw_grpc/
  87. pw_hdlc/
  88. pw_hex_dump/
  89. pw_i2c/
  90. pw_i2c_linux/
  91. pw_i2c_mcuxpresso/
  92. pw_i2c_rp2040/
  93. pw_i2c_zephyr/
  94. pw_ide/
  95. pw_interrupt/
  96. pw_interrupt_cortex_m/
  97. pw_interrupt_freertos/
  98. pw_interrupt_zephyr/
  99. pw_intrusive_ptr/
  100. pw_json/
  101. pw_kernel/
  102. pw_kvs/
  103. pw_libc/
  104. pw_libcxx/
  105. pw_log/
  106. pw_log_android/
  107. pw_log_basic/
  108. pw_log_fuchsia/
  109. pw_log_null/
  110. pw_log_rpc/
  111. pw_log_string/
  112. pw_log_tokenized/
  113. pw_log_zephyr/
  114. pw_malloc/
  115. pw_malloc_freelist/
  116. pw_malloc_freertos/
  117. pw_memory/
  118. pw_metric/
  119. pw_module/
  120. pw_multibuf/
  121. pw_multisink/
  122. pw_numeric/
  123. pw_package/
  124. pw_perf_test/
  125. pw_persistent_ram/
  126. pw_polyfill/
  127. pw_preprocessor/
  128. pw_presubmit/
  129. pw_protobuf/
  130. pw_protobuf_compiler/
  131. pw_random/
  132. pw_random_fuchsia/
  133. pw_result/
  134. pw_ring_buffer/
  135. pw_router/
  136. pw_rpc/
  137. pw_rpc_transport/
  138. pw_rust/
  139. pw_sensor/
  140. pw_snapshot/
  141. pw_software_update/
  142. pw_span/
  143. pw_spi/
  144. pw_spi_linux/
  145. pw_spi_mcuxpresso/
  146. pw_spi_rp2040/
  147. pw_spi_zephyr/
  148. pw_status/
  149. pw_stm32cube_build/
  150. pw_stream/
  151. pw_stream_uart_linux/
  152. pw_stream_uart_mcuxpresso/
  153. pw_string/
  154. pw_symbolizer/
  155. pw_sync/
  156. pw_sync_baremetal/
  157. pw_sync_embos/
  158. pw_sync_freertos/
  159. pw_sync_stl/
  160. pw_sync_threadx/
  161. pw_sync_zephyr/
  162. pw_sys_io/
  163. pw_sys_io_ambiq_sdk/
  164. pw_sys_io_arduino/
  165. pw_sys_io_baremetal_lm3s6965evb/
  166. pw_sys_io_baremetal_stm32f429/
  167. pw_sys_io_emcraft_sf2/
  168. pw_sys_io_mcuxpresso/
  169. pw_sys_io_rp2040/
  170. pw_sys_io_stdio/
  171. pw_sys_io_stm32cube/
  172. pw_sys_io_zephyr/
  173. pw_system/
  174. pw_target_runner/
  175. pw_thread/
  176. pw_thread_embos/
  177. pw_thread_freertos/
  178. pw_thread_stl/
  179. pw_thread_threadx/
  180. pw_thread_zephyr/
  181. pw_time/
  182. pw_tls_client/
  183. pw_tls_client_boringssl/
  184. pw_tls_client_mbedtls/
  185. pw_tokenizer/
  186. pw_toolchain/
  187. pw_trace/
  188. pw_trace_tokenized/
  189. pw_transfer/
  190. pw_uart/
  191. pw_uart_mcuxpresso/
  192. pw_unit_test/
  193. pw_uuid/
  194. pw_varint/
  195. pw_watch/
  196. pw_web/
  197. pw_work_queue/
  198. seed/
  199. targets/
  200. third_party/
  201. zephyr/
  202. .dockerignore ⇨ .gitignore
  203. activate.fish ⇨ bootstrap.fish
  204. activate.sh ⇨ bootstrap.sh
  205. .bazelignore
  206. .bazelrc
  207. .bazelversion
  208. .black.toml
  209. .clang-format
  210. .clang-tidy
  211. .git-blame-ignore-revs
  212. .gitattributes
  213. .gitignore
  214. .gn
  215. .mypy.ini
  216. .prettierignore
  217. .prettierrc.cjs
  218. .pw_ide.yaml
  219. .pylintrc
  220. .ruff.toml
  221. activate.bat
  222. Android.bp
  223. AUTHORS
  224. bootstrap.bat
  225. bootstrap.fish
  226. bootstrap.sh
  227. BUILD.bazel
  228. BUILD.gn
  229. BUILDCONFIG.gn
  230. CMakeLists.txt
  231. EXTENDED_OWNERS
  232. GEMINI.md
  233. go.mod
  234. go.sum
  235. Kconfig.zephyr
  236. LICENSE
  237. MODULE.bazel
  238. MODULE.bazel.lock
  239. modules.gni
  240. OWNERS
  241. package.json
  242. pigweed.json
  243. PIGWEED_MODULES
  244. pw
  245. README.md
  246. REPO.bazel
  247. rustfmt.toml
  248. tsconfig.json
  249. workflows.json
  250. WORKSPACE_OWNERS
README.md

Pigweed

Pigweed is an open source collection of embedded-targeted libraries–or as we like to call them, modules. These modules are building blocks and infrastructure that enable faster and more reliable development on small-footprint MMU-less 32-bit microcontrollers like the STMicroelectronics STM32L452 or the Nordic nRF52832.

For more information please see our website: https://pigweed.dev/.

Links