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pigweed/pigweed/pigweed.git/cb53389c7c5afea0b9191ddddbe3a9fdb704a485
commit
cb53389c7c5afea0b9191ddddbe3a9fdb704a485
[log]
author
Aaron Green <aarongreen@google.com>
Tue Jan 06 12:39:29 2026 -0800
committer
CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Tue Jan 06 12:39:29 2026 -0800
tree
bec3ffbb8ede4ffb8bc6b270813b8c628a12736b
parent
34a27fb95e3d0d5c495a79bc987f1be42d252538 [diff]
pw_multibuf: Store per-chunk memory context

This CL changes the memory context from being stored one per multibuf to
on each chunk. This allows greater flexibility for adding and removing
chunks. For example, multiple unique and shared pointers from different
allocators can now be added. Notably, owned regions can now be split by
having them be converted to shared regions.

Change-Id: I06b2ef4c731a3849a699bd9cca76b33c9d3fe425
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/332093
Docs-Not-Needed: Aaron Green <aarongreen@google.com>
Commit-Queue: Aaron Green <aarongreen@google.com>
Reviewed-by: Wyatt Hepler <hepler@google.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Copybara-Verified: Copybara Prod <copybara-worker-blackhole@google.com>
Pigweed-Auto-Submit: Aaron Green <aarongreen@google.com>
11 files changed
tree: bec3ffbb8ede4ffb8bc6b270813b8c628a12736b
  1. .allstar/
  2. .gemini/
  3. .github/
  4. .vscode/
  5. build_overrides/
  6. docker/
  7. docs/
  8. kudzu/
  9. pw_alignment/
  10. pw_allocator/
  11. pw_analog/
  12. pw_android_toolchain/
  13. pw_arduino_build/
  14. pw_assert/
  15. pw_assert_basic/
  16. pw_assert_fuchsia/
  17. pw_assert_log/
  18. pw_assert_tokenized/
  19. pw_assert_trap/
  20. pw_assert_zephyr/
  21. pw_async/
  22. pw_async2/
  23. pw_async_basic/
  24. pw_async_fuchsia/
  25. pw_atomic/
  26. pw_base64/
  27. pw_bloat/
  28. pw_blob_store/
  29. pw_bluetooth/
  30. pw_bluetooth_hci/
  31. pw_bluetooth_profiles/
  32. pw_bluetooth_proxy/
  33. pw_bluetooth_sapphire/
  34. pw_boot/
  35. pw_boot_cortex_m/
  36. pw_build/
  37. pw_build_android/
  38. pw_build_info/
  39. pw_build_mcuxpresso/
  40. pw_bytes/
  41. pw_change/
  42. pw_channel/
  43. pw_checksum/
  44. pw_chre/
  45. pw_chrono/
  46. pw_chrono_embos/
  47. pw_chrono_freertos/
  48. pw_chrono_rp2040/
  49. pw_chrono_stl/
  50. pw_chrono_threadx/
  51. pw_chrono_zephyr/
  52. pw_cli/
  53. pw_cli_analytics/
  54. pw_clock_tree/
  55. pw_clock_tree_mcuxpresso/
  56. pw_compilation_testing/
  57. pw_config_loader/
  58. pw_console/
  59. pw_containers/
  60. pw_cpu_exception/
  61. pw_cpu_exception_cortex_m/
  62. pw_cpu_exception_risc_v/
  63. pw_crypto/
  64. pw_digital_io/
  65. pw_digital_io_linux/
  66. pw_digital_io_mcuxpresso/
  67. pw_digital_io_rp2040/
  68. pw_digital_io_zephyr/
  69. pw_display/
  70. pw_dma_mcuxpresso/
  71. pw_docgen/
  72. pw_doctor/
  73. pw_elf/
  74. pw_emu/
  75. pw_env_setup/
  76. pw_env_setup_zephyr/
  77. pw_file/
  78. pw_flatbuffers/
  79. pw_format/
  80. pw_function/
  81. pw_fuzzer/
  82. pw_grpc/
  83. pw_hdlc/
  84. pw_hex_dump/
  85. pw_i2c/
  86. pw_i2c_linux/
  87. pw_i2c_mcuxpresso/
  88. pw_i2c_rp2040/
  89. pw_i2c_zephyr/
  90. pw_ide/
  91. pw_interrupt/
  92. pw_interrupt_cortex_m/
  93. pw_interrupt_freertos/
  94. pw_interrupt_zephyr/
  95. pw_intrusive_ptr/
  96. pw_json/
  97. pw_kernel/
  98. pw_kvs/
  99. pw_libc/
  100. pw_libcxx/
  101. pw_log/
  102. pw_log_android/
  103. pw_log_basic/
  104. pw_log_fuchsia/
  105. pw_log_null/
  106. pw_log_rpc/
  107. pw_log_string/
  108. pw_log_tokenized/
  109. pw_log_zephyr/
  110. pw_malloc/
  111. pw_malloc_freelist/
  112. pw_malloc_freertos/
  113. pw_memory/
  114. pw_metric/
  115. pw_module/
  116. pw_multibuf/
  117. pw_multisink/
  118. pw_numeric/
  119. pw_package/
  120. pw_perf_test/
  121. pw_persistent_ram/
  122. pw_polyfill/
  123. pw_preprocessor/
  124. pw_presubmit/
  125. pw_protobuf/
  126. pw_protobuf_compiler/
  127. pw_random/
  128. pw_random_fuchsia/
  129. pw_result/
  130. pw_ring_buffer/
  131. pw_router/
  132. pw_rpc/
  133. pw_rpc_transport/
  134. pw_rust/
  135. pw_sensor/
  136. pw_snapshot/
  137. pw_software_update/
  138. pw_span/
  139. pw_spi/
  140. pw_spi_linux/
  141. pw_spi_mcuxpresso/
  142. pw_spi_rp2040/
  143. pw_status/
  144. pw_stm32cube_build/
  145. pw_stream/
  146. pw_stream_shmem_mcuxpresso/
  147. pw_stream_uart_linux/
  148. pw_stream_uart_mcuxpresso/
  149. pw_string/
  150. pw_symbolizer/
  151. pw_sync/
  152. pw_sync_baremetal/
  153. pw_sync_embos/
  154. pw_sync_freertos/
  155. pw_sync_stl/
  156. pw_sync_threadx/
  157. pw_sync_zephyr/
  158. pw_sys_io/
  159. pw_sys_io_ambiq_sdk/
  160. pw_sys_io_arduino/
  161. pw_sys_io_baremetal_lm3s6965evb/
  162. pw_sys_io_baremetal_stm32f429/
  163. pw_sys_io_emcraft_sf2/
  164. pw_sys_io_mcuxpresso/
  165. pw_sys_io_rp2040/
  166. pw_sys_io_stdio/
  167. pw_sys_io_stm32cube/
  168. pw_sys_io_zephyr/
  169. pw_system/
  170. pw_target_runner/
  171. pw_thread/
  172. pw_thread_embos/
  173. pw_thread_freertos/
  174. pw_thread_stl/
  175. pw_thread_threadx/
  176. pw_thread_zephyr/
  177. pw_tls_client/
  178. pw_tls_client_boringssl/
  179. pw_tls_client_mbedtls/
  180. pw_tokenizer/
  181. pw_toolchain/
  182. pw_trace/
  183. pw_trace_tokenized/
  184. pw_transfer/
  185. pw_uart/
  186. pw_uart_mcuxpresso/
  187. pw_unit_test/
  188. pw_uuid/
  189. pw_varint/
  190. pw_watch/
  191. pw_web/
  192. pw_work_queue/
  193. seed/
  194. targets/
  195. third_party/
  196. zephyr/
  197. .dockerignore ⇨ .gitignore
  198. activate.fish ⇨ bootstrap.fish
  199. activate.sh ⇨ bootstrap.sh
  200. .bazelignore
  201. .bazelrc
  202. .bazelversion
  203. .black.toml
  204. .clang-format
  205. .clang-tidy
  206. .git-blame-ignore-revs
  207. .gitattributes
  208. .gitignore
  209. .gn
  210. .mypy.ini
  211. .prettierignore
  212. .prettierrc.cjs
  213. .pw_ide.yaml
  214. .pylintrc
  215. .ruff.toml
  216. activate.bat
  217. Android.bp
  218. AUTHORS
  219. bootstrap.bat
  220. bootstrap.fish
  221. bootstrap.sh
  222. BUILD.bazel
  223. BUILD.gn
  224. BUILDCONFIG.gn
  225. CMakeLists.txt
  226. GEMINI.md
  227. go.mod
  228. go.sum
  229. Kconfig.zephyr
  230. LICENSE
  231. MODULE.bazel
  232. MODULE.bazel.lock
  233. modules.gni
  234. OWNERS
  235. package.json
  236. pigweed.json
  237. PIGWEED_MODULES
  238. pw
  239. README.md
  240. REPO.bazel
  241. rustfmt.toml
  242. tsconfig.json
  243. workflows.json
  244. WORKSPACE
  245. 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