Google Git
Sign in
pigweed / pigweed / pigweed / de2fc4187ae346aef11c6ee1e204a89ef03d3e5e
commitde2fc4187ae346aef11c6ee1e204a89ef03d3e5e[log] [tgz]
authorYuval Peress <peress@google.com>Thu Apr 03 09:29:40 2025 -0700
committerCQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu Apr 03 09:29:40 2025 -0700
tree4830dbd9fb20c8828dfb8ecd8aea7273fe43244f
parentcc646fb3f6af61249949982cfe91447b4802ff13 [diff]
pw_ring_buffer: Make iterator entry mutable

Provide a distinction between iterator and const_iterator such that
iterator contains a pw::ByteSpan buffer (mutable data) and
const_iterator contains pw::ConstByteSpan buffer (const data).

Enable copy constructors and stricter iterator equality checks:
- Iterators not pointing to the end must also point to the same data in
  order to be considered equal.
- Const iterators can be copied to other const iterators.
- Const iterators cannot be copied to mutable iterators.
- Mutable iterators can be copied to both mutable and const iterators.

BUG: b/406109661
Change-Id: I890b7c30548ea9f9d0b033a1b2b1783c0ddf220a

Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/280661
Reviewed-by: Aaron Green <aarongreen@google.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Pigweed-Auto-Submit: Yuval Peress <peress@google.com>
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed-service-accounts.iam.gserviceaccount.com>
5 files changed
tree: 4830dbd9fb20c8828dfb8ecd8aea7273fe43244f
  1. .allstar/
  2. .github/
  3. .vscode/
  4. build_overrides/
  5. docker/
  6. docs/
  7. kudzu/
  8. pw_alignment/
  9. pw_allocator/
  10. pw_analog/
  11. pw_android_toolchain/
  12. pw_arduino_build/
  13. pw_assert/
  14. pw_assert_basic/
  15. pw_assert_fuchsia/
  16. pw_assert_log/
  17. pw_assert_tokenized/
  18. pw_assert_trap/
  19. pw_assert_zephyr/
  20. pw_async/
  21. pw_async2/
  22. pw_async2_basic/
  23. pw_async2_epoll/
  24. pw_async_basic/
  25. pw_async_fuchsia/
  26. pw_atomic/
  27. pw_base64/
  28. pw_bloat/
  29. pw_blob_store/
  30. pw_bluetooth/
  31. pw_bluetooth_hci/
  32. pw_bluetooth_profiles/
  33. pw_bluetooth_proxy/
  34. pw_bluetooth_sapphire/
  35. pw_boot/
  36. pw_boot_cortex_m/
  37. pw_build/
  38. pw_build_android/
  39. pw_build_info/
  40. pw_build_mcuxpresso/
  41. pw_bytes/
  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_display/
  69. pw_dma_mcuxpresso/
  70. pw_docgen/
  71. pw_doctor/
  72. pw_elf/
  73. pw_emu/
  74. pw_env_setup/
  75. pw_env_setup_zephyr/
  76. pw_file/
  77. pw_flatbuffers/
  78. pw_format/
  79. pw_function/
  80. pw_fuzzer/
  81. pw_grpc/
  82. pw_hdlc/
  83. pw_hex_dump/
  84. pw_i2c/
  85. pw_i2c_linux/
  86. pw_i2c_mcuxpresso/
  87. pw_i2c_rp2040/
  88. pw_ide/
  89. pw_interrupt/
  90. pw_interrupt_cortex_m/
  91. pw_interrupt_freertos/
  92. pw_interrupt_zephyr/
  93. pw_intrusive_ptr/
  94. pw_json/
  95. pw_kernel/
  96. pw_kvs/
  97. pw_libc/
  98. pw_libcxx/
  99. pw_log/
  100. pw_log_android/
  101. pw_log_basic/
  102. pw_log_fuchsia/
  103. pw_log_null/
  104. pw_log_rpc/
  105. pw_log_string/
  106. pw_log_tokenized/
  107. pw_log_zephyr/
  108. pw_malloc/
  109. pw_malloc_freelist/
  110. pw_malloc_freertos/
  111. pw_metric/
  112. pw_minimal_cpp_stdlib/
  113. pw_module/
  114. pw_multibuf/
  115. pw_multisink/
  116. pw_numeric/
  117. pw_package/
  118. pw_perf_test/
  119. pw_persistent_ram/
  120. pw_polyfill/
  121. pw_preprocessor/
  122. pw_presubmit/
  123. pw_protobuf/
  124. pw_protobuf_compiler/
  125. pw_random/
  126. pw_random_fuchsia/
  127. pw_result/
  128. pw_ring_buffer/
  129. pw_router/
  130. pw_rpc/
  131. pw_rpc_transport/
  132. pw_rust/
  133. pw_sensor/
  134. pw_snapshot/
  135. pw_software_update/
  136. pw_span/
  137. pw_spi/
  138. pw_spi_linux/
  139. pw_spi_mcuxpresso/
  140. pw_spi_rp2040/
  141. pw_status/
  142. pw_stm32cube_build/
  143. pw_stream/
  144. pw_stream_shmem_mcuxpresso/
  145. pw_stream_uart_linux/
  146. pw_stream_uart_mcuxpresso/
  147. pw_string/
  148. pw_symbolizer/
  149. pw_sync/
  150. pw_sync_baremetal/
  151. pw_sync_embos/
  152. pw_sync_freertos/
  153. pw_sync_stl/
  154. pw_sync_threadx/
  155. pw_sync_zephyr/
  156. pw_sys_io/
  157. pw_sys_io_ambiq_sdk/
  158. pw_sys_io_arduino/
  159. pw_sys_io_baremetal_lm3s6965evb/
  160. pw_sys_io_baremetal_stm32f429/
  161. pw_sys_io_emcraft_sf2/
  162. pw_sys_io_mcuxpresso/
  163. pw_sys_io_rp2040/
  164. pw_sys_io_stdio/
  165. pw_sys_io_stm32cube/
  166. pw_sys_io_zephyr/
  167. pw_system/
  168. pw_target_runner/
  169. pw_thread/
  170. pw_thread_embos/
  171. pw_thread_freertos/
  172. pw_thread_stl/
  173. pw_thread_threadx/
  174. pw_thread_zephyr/
  175. pw_tls_client/
  176. pw_tls_client_boringssl/
  177. pw_tls_client_mbedtls/
  178. pw_tokenizer/
  179. pw_toolchain/
  180. pw_trace/
  181. pw_trace_tokenized/
  182. pw_transfer/
  183. pw_uart/
  184. pw_uart_mcuxpresso/
  185. pw_unit_test/
  186. pw_unit_test_zephyr/
  187. pw_varint/
  188. pw_watch/
  189. pw_web/
  190. pw_work_queue/
  191. seed/
  192. targets/
  193. third_party/
  194. ts/
  195. zephyr/
  196. .dockerignore ⇨ .gitignore
  197. activate.fish ⇨ bootstrap.fish
  198. activate.sh ⇨ bootstrap.sh
  199. .bazelignore
  200. .bazelrc
  201. .bazelversion
  202. .black.toml
  203. .clang-format
  204. .clang-tidy
  205. .eslintrc.cjs
  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. go.mod
  227. go.sum
  228. jest.config.ts
  229. Kconfig.zephyr
  230. LICENSE
  231. MODULE.bazel
  232. MODULE.bazel.lock
  233. modules.gni
  234. OWNERS
  235. package-lock.json
  236. package.json
  237. pigweed.json
  238. PIGWEED_MODULES
  239. pnpm-lock.yaml
  240. README.md
  241. REPO.bazel
  242. rollup-protos.config.js
  243. rollup.config.js
  244. tsconfig.json
  245. WORKSPACE
  246. 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