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pigweed / pigweed / pigweed / 9a827f5f037f6b0f25f70f8d41ba9341ab7bf231
commit9a827f5f037f6b0f25f70f8d41ba9341ab7bf231[log] [tgz]
authorEli Lipsitz <elipsitz@google.com>Fri Jul 19 19:18:47 2024 +0000
committerCQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Jul 19 19:18:47 2024 +0000
tree29c03afad1f7b0f3f6168808edf31fd62de73267
parentf4e1dbc0aafcd5c1363fe21153028201ffd13972 [diff]
pw_rpc_transport: Don't write empty header in StreamRpcFrameSender

This commit slightly adjusts the behavior of StreamRpcFrameSender to
avoid making a Write call for an empty RpcFrame header. This is a
performance optimization, because some underlying streams might not
treat a write of 0 as a no-op. With the common case of Hdlc framing, the
header will always be empty.

Tested: After this change, StreamRpcFrameSender with Hdlc framing
Tested: no longer makes an empty write for each RpcFrame.
Change-Id: Ic6d5589495d8c9c185993fd0c59e92b57876fe3e
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/220211
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Commit-Queue: Eli Lipsitz <elipsitz@google.com>
Reviewed-by: Alexei Frolov <frolv@google.com>
Reviewed-by: Austin Foxley <afoxley@google.com>
1 file changed
tree: 29c03afad1f7b0f3f6168808edf31fd62de73267
  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_log/
  16. pw_assert_tokenized/
  17. pw_assert_trap/
  18. pw_assert_zephyr/
  19. pw_async/
  20. pw_async2/
  21. pw_async2_basic/
  22. pw_async2_epoll/
  23. pw_async_basic/
  24. pw_base64/
  25. pw_bloat/
  26. pw_blob_store/
  27. pw_bluetooth/
  28. pw_bluetooth_hci/
  29. pw_bluetooth_profiles/
  30. pw_bluetooth_proxy/
  31. pw_bluetooth_sapphire/
  32. pw_boot/
  33. pw_boot_cortex_m/
  34. pw_build/
  35. pw_build_android/
  36. pw_build_info/
  37. pw_build_mcuxpresso/
  38. pw_bytes/
  39. pw_channel/
  40. pw_checksum/
  41. pw_chre/
  42. pw_chrono/
  43. pw_chrono_embos/
  44. pw_chrono_freertos/
  45. pw_chrono_rp2040/
  46. pw_chrono_stl/
  47. pw_chrono_threadx/
  48. pw_chrono_zephyr/
  49. pw_cli/
  50. pw_clock_tree/
  51. pw_clock_tree_mcuxpresso/
  52. pw_compilation_testing/
  53. pw_config_loader/
  54. pw_console/
  55. pw_containers/
  56. pw_cpu_exception/
  57. pw_cpu_exception_cortex_m/
  58. pw_cpu_exception_risc_v/
  59. pw_crypto/
  60. pw_digital_io/
  61. pw_digital_io_linux/
  62. pw_digital_io_mcuxpresso/
  63. pw_digital_io_rp2040/
  64. pw_dma_mcuxpresso/
  65. pw_docgen/
  66. pw_doctor/
  67. pw_emu/
  68. pw_env_setup/
  69. pw_env_setup_zephyr/
  70. pw_file/
  71. pw_format/
  72. pw_function/
  73. pw_fuzzer/
  74. pw_grpc/
  75. pw_hdlc/
  76. pw_hex_dump/
  77. pw_i2c/
  78. pw_i2c_linux/
  79. pw_i2c_mcuxpresso/
  80. pw_i2c_rp2040/
  81. pw_ide/
  82. pw_interrupt/
  83. pw_interrupt_cortex_m/
  84. pw_interrupt_xtensa/
  85. pw_interrupt_zephyr/
  86. pw_intrusive_ptr/
  87. pw_json/
  88. pw_kvs/
  89. pw_libc/
  90. pw_libcxx/
  91. pw_log/
  92. pw_log_android/
  93. pw_log_basic/
  94. pw_log_null/
  95. pw_log_rpc/
  96. pw_log_string/
  97. pw_log_tokenized/
  98. pw_log_zephyr/
  99. pw_malloc/
  100. pw_malloc_freelist/
  101. pw_malloc_freertos/
  102. pw_metric/
  103. pw_minimal_cpp_stdlib/
  104. pw_module/
  105. pw_multibuf/
  106. pw_multisink/
  107. pw_package/
  108. pw_perf_test/
  109. pw_persistent_ram/
  110. pw_polyfill/
  111. pw_preprocessor/
  112. pw_presubmit/
  113. pw_protobuf/
  114. pw_protobuf_compiler/
  115. pw_random/
  116. pw_result/
  117. pw_ring_buffer/
  118. pw_router/
  119. pw_rpc/
  120. pw_rpc_transport/
  121. pw_rust/
  122. pw_sensor/
  123. pw_snapshot/
  124. pw_software_update/
  125. pw_span/
  126. pw_spi/
  127. pw_spi_linux/
  128. pw_spi_mcuxpresso/
  129. pw_spi_rp2040/
  130. pw_status/
  131. pw_stm32cube_build/
  132. pw_stream/
  133. pw_stream_shmem_mcuxpresso/
  134. pw_stream_uart_linux/
  135. pw_stream_uart_mcuxpresso/
  136. pw_string/
  137. pw_symbolizer/
  138. pw_sync/
  139. pw_sync_baremetal/
  140. pw_sync_embos/
  141. pw_sync_freertos/
  142. pw_sync_stl/
  143. pw_sync_threadx/
  144. pw_sync_zephyr/
  145. pw_sys_io/
  146. pw_sys_io_ambiq_sdk/
  147. pw_sys_io_arduino/
  148. pw_sys_io_baremetal_lm3s6965evb/
  149. pw_sys_io_baremetal_stm32f429/
  150. pw_sys_io_emcraft_sf2/
  151. pw_sys_io_mcuxpresso/
  152. pw_sys_io_rp2040/
  153. pw_sys_io_stdio/
  154. pw_sys_io_stm32cube/
  155. pw_sys_io_zephyr/
  156. pw_system/
  157. pw_target_runner/
  158. pw_thread/
  159. pw_thread_embos/
  160. pw_thread_freertos/
  161. pw_thread_stl/
  162. pw_thread_threadx/
  163. pw_thread_zephyr/
  164. pw_tls_client/
  165. pw_tls_client_boringssl/
  166. pw_tls_client_mbedtls/
  167. pw_tokenizer/
  168. pw_toolchain/
  169. pw_toolchain_bazel/
  170. pw_trace/
  171. pw_trace_tokenized/
  172. pw_transfer/
  173. pw_uart/
  174. pw_unit_test/
  175. pw_unit_test_zephyr/
  176. pw_varint/
  177. pw_watch/
  178. pw_web/
  179. pw_work_queue/
  180. seed/
  181. targets/
  182. third_party/
  183. ts/
  184. zephyr/
  185. .dockerignore ⇨ .gitignore
  186. activate.fish ⇨ bootstrap.fish
  187. activate.sh ⇨ bootstrap.sh
  188. .bazelignore
  189. .bazelrc
  190. .bazelversion
  191. .black.toml
  192. .clang-format
  193. .clang-tidy
  194. .eslintrc.cjs
  195. .git-blame-ignore-revs
  196. .gitattributes
  197. .gitignore
  198. .gn
  199. .mypy.ini
  200. .prettierignore
  201. .prettierrc.cjs
  202. .pw_ide.yaml
  203. .pylintrc
  204. activate.bat
  205. Android.bp
  206. AUTHORS
  207. bootstrap.bat
  208. bootstrap.fish
  209. bootstrap.sh
  210. BUILD.bazel
  211. BUILD.gn
  212. BUILDCONFIG.gn
  213. CMakeLists.txt
  214. jest.config.ts
  215. Kconfig.zephyr
  216. LICENSE
  217. modules.gni
  218. OWNERS
  219. package-lock.json
  220. package.json
  221. pigweed.json
  222. PIGWEED_MODULES
  223. README.md
  224. rollup.config.js
  225. tsconfig.json
  226. WORKSPACE
  227. 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